feat: Enhance deployment scripts with environment variable validation and loading

- Added translation support for task-related strings in ProjectTaskForm and ProjectTasksSection components.
- Integrated translation for navigation items in the Navigation component.
- Created ProjectCalendarWidget component with Polish translations for project statuses and deadlines.
- Developed Tooltip component for enhanced user experience with tooltips.
- Established a field change history logging system in the database with associated queries.
- Enhanced task update logging to include translated status and priority changes.
- Introduced server-side translations for system messages to improve localization.

.gitignore

@@ -45,3 +45,6 @@ next-env.d.ts
 
 # kosz  
 /kosz
+
+# uploads
+/public/uploads

DOCKER_GIT_DEPLOYMENT.md

@@ -0,0 +1,201 @@
+# Docker Git Deployment Guide
+
+This project now supports deploying directly from a Git repository using Docker. This is useful for automated deployments and CI/CD pipelines.
+
+## File Structure
+
+- `Dockerfile` - Production dockerfile that supports Git deployment
+- `Dockerfile.dev` - Development dockerfile
+- `docker-compose.yml` - Development environment
+- `docker-compose.prod.yml` - Production environment with Git support
+- `deploy.sh` / `deploy.bat` - Deployment scripts
+
+## Deployment Options
+
+### 1. Deploy from Local Files (Default)
+
+```bash
+# Development
+docker-compose up
+
+# Production
+docker-compose -f docker-compose.prod.yml up --build
+```
+
+**Note**: Both development and production Docker builds automatically create the default admin account.
+
+### 2. Deploy from Git Repository
+
+#### Using Environment Variables
+
+Create a `.env` file with:
+```env
+GIT_REPO_URL=https://git.wastpol.pl/Admin/panel.git
+GIT_BRANCH=ui-fix
+GIT_COMMIT=abc123  # Optional: specific commit hash
+```
+
+Then run:
+```bash
+docker-compose -f docker-compose.prod.yml up --build
+```
+
+#### Using Build Arguments
+
+```bash
+docker build \
+  --build-arg GIT_REPO_URL=https://git.wastpol.pl/Admin/panel.git \
+  --build-arg GIT_BRANCH=ui-fix \
+  --build-arg GIT_COMMIT=abc123 \
+  -t your-app .
+```
+
+#### Using Deployment Scripts
+
+```bash
+# Linux/Mac
+./deploy.sh https://git.wastpol.pl/Admin/panel.git ui-fix abc123
+
+# Windows
+deploy.bat https://git.wastpol.pl/Admin/panel.git ui-fix abc123
+```
+
+## Private Repositories
+
+For private repositories, you have several options:
+
+### 1. SSH Keys (Recommended for development)
+```bash
+# Build with SSH URL
+docker build --build-arg GIT_REPO_URL=git@git.wastpol.pl:Admin/panel.git .
+```
+
+### 2. Personal Access Token
+```bash
+# Build with token in URL
+docker build --build-arg GIT_REPO_URL=https://username:token@git.wastpol.pl/Admin/panel.git .
+```
+
+### 3. Docker Secrets (Recommended for production)
+```yaml
+# In docker-compose.prod.yml
+services:
+  app:
+    build:
+      context: .
+      args:
+        - GIT_REPO_URL=https://git.wastpol.pl/Admin/panel.git
+      secrets:
+        - git_token
+secrets:
+  git_token:
+    file: ./git_token.txt
+```
+
+## CI/CD Integration
+
+### GitHub Actions Example
+
+```yaml
+name: Deploy
+on:
+  push:
+    branches: [main]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to server
+        run: |
+          docker build \
+            --build-arg GIT_REPO_URL=${{ github.repository }} \
+            --build-arg GIT_COMMIT=${{ github.sha }} \
+            -t my-app .
+          docker run -d -p 3000:3000 my-app
+```
+
+### Docker Compose in CI/CD
+
+```bash
+# Set environment variables in your CI/CD system
+export GIT_REPO_URL="https://git.wastpol.pl/Admin/panel.git"
+export GIT_BRANCH="ui-fix"
+export GIT_COMMIT="$CI_COMMIT_SHA"
+
+# Deploy
+docker-compose -f docker-compose.prod.yml up --build -d
+```
+
+## Build Process
+
+When `GIT_REPO_URL` is provided:
+1. Git repository is cloned into the container
+2. If `GIT_COMMIT` is specified, checkout that specific commit
+3. Install dependencies from the repository's package.json
+4. Build the application
+5. **Admin account is created when container starts (not during build)**
+6. Start the production server
+
+When `GIT_REPO_URL` is not provided:
+1. Copy local files into the container
+2. Install dependencies
+3. Build the application
+4. **Admin account is created when container starts (not during build)**
+5. Start the production server
+
+## Default Admin Account
+
+Both development and production Docker containers automatically create a default admin account **when the container starts** (not during build). This ensures the database is properly persisted in mounted volumes.
+
+- **Email**: `admin@localhost.com`
+- **Password**: `admin123456`
+- **Role**: `admin`
+
+⚠️ **Important Security Note**: Please change the default password immediately after your first login!
+
+### Manual Admin Account Creation
+
+If you need to create the admin account manually (for development or testing):
+
+```bash
+# Using npm script
+npm run create-admin
+
+# Or directly
+node scripts/create-admin.js
+```
+
+The script will skip creation if an admin account already exists.
+
+## Environment Variables
+
+- `GIT_REPO_URL` - Git repository URL (HTTPS or SSH)
+- `GIT_BRANCH` - Git branch to checkout (default: main)
+- `GIT_COMMIT` - Specific commit hash to checkout (optional)
+- `NODE_ENV` - Node.js environment (development/production)
+
+## Troubleshooting
+
+### Git Authentication Issues
+- Ensure your Git credentials are properly configured
+- For HTTPS, use personal access tokens instead of passwords
+- For SSH, ensure SSH keys are properly mounted or available
+
+### Build Failures
+- Check if the repository URL is accessible
+- Verify the branch name exists
+- Ensure the commit hash is valid
+- Check Docker build logs for specific errors
+
+### Permission Issues
+- Ensure the Docker daemon has network access
+- For private repositories, verify authentication tokens/keys
+
+### Admin Account Issues
+- If admin creation fails during startup, check database initialization
+- Ensure the `./data` directory is writable on the host
+- Database files are persisted in the mounted `./data` volume
+- Admin account is created on container startup, not during build
+- If admin already exists, the script will skip creation (this is normal)
+- To recreate admin account, delete the database file in `./data/` and restart the container

Dockerfile

@@ -1,20 +1,43 @@
 # Use Node.js 22.11.0 as the base image
 FROM node:22.11.0
 
+# Install git
+RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
+
 # Set the working directory
 WORKDIR /app
 
-# Copy package.json and package-lock.json (if any)
+# If building from a git repository, clone it
+# This will be used when the build context doesn't include source files
+ARG GIT_REPO_URL
+ARG GIT_BRANCH=main
+ARG GIT_COMMIT
+
+# If GIT_REPO_URL is provided, clone the repo; otherwise copy local files
+RUN if [ -n "$GIT_REPO_URL" ]; then \
+    git clone --branch ${GIT_BRANCH} ${GIT_REPO_URL} . && \
+    if [ -n "$GIT_COMMIT" ]; then git checkout ${GIT_COMMIT}; fi; \
+  fi
+
+# Copy package.json and package-lock.json (if not cloned from git)
 COPY package*.json ./
 
 # Install dependencies
 RUN npm install
 
-# Copy the rest of the app
+# Copy the rest of the app (if not cloned from git)
+RUN if [ -z "$GIT_REPO_URL" ]; then echo "Copying local files..."; fi
 COPY . .
 
+# Build the application for production
+RUN npm run build
+
+# Copy the entrypoint script
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
+
 # Expose the default Next.js port
 EXPOSE 3000
 
-# Start the dev server
-CMD ["npm", "run", "dev"]
+# Use the entrypoint script
+ENTRYPOINT ["/docker-entrypoint.sh"]

Dockerfile.dev

@@ -0,0 +1,27 @@
+# Use Node.js 22.11.0 as the base image
+FROM node:22.11.0
+
+# Install git for development
+RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
+
+# Set the working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json (if any)
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the app
+COPY . .
+
+# Copy the development entrypoint script
+COPY docker-entrypoint-dev.sh /docker-entrypoint-dev.sh
+RUN chmod +x /docker-entrypoint-dev.sh
+
+# Expose the default Next.js port
+EXPOSE 3000
+
+# Use the development entrypoint script
+ENTRYPOINT ["/docker-entrypoint-dev.sh"]

deploy.bat

@@ -0,0 +1,57 @@
+@echo off
+REM Production deployment script for Windows
+REM Usage: deploy.bat [git_repo_url] [branch] [commit_hash]
+
+set GIT_REPO_URL=%1
+set GIT_BRANCH=%2
+if "%GIT_BRANCH%"=="" set GIT_BRANCH=ui-fix
+set GIT_COMMIT=%3
+
+REM Check if .env.production exists
+if exist .env.production (
+    echo Loading production environment variables...
+    for /f "delims=" %%x in (.env.production) do (
+        set "%%x"
+    )
+) else (
+    echo Warning: .env.production not found. Make sure environment variables are set!
+)
+
+REM Validate critical environment variables
+if "%NEXTAUTH_SECRET%"=="" (
+    echo ERROR: NEXTAUTH_SECRET must be set to a secure random string!
+    echo Generate one with: openssl rand -base64 32
+    exit /b 1
+)
+
+@REM if "%NEXTAUTH_SECRET%"=="YOUR_SUPER_SECURE_SECRET_KEY_HERE_AT_LEAST_32_CHARACTERS_LONG" (
+@REM     echo ERROR: NEXTAUTH_SECRET must be changed from the default value!
+@REM     echo Generate one with: openssl rand -base64 32
+@REM     exit /b 1
+@REM )
+
+if "%NEXTAUTH_URL%"=="" (
+    echo ERROR: NEXTAUTH_URL must be set to your production URL!
+    exit /b 1
+)
+
+if "%GIT_REPO_URL%"=="" (
+    echo Building from local files...
+    docker-compose -f docker-compose.prod.yml build
+) else (
+    echo Building from git repository: %GIT_REPO_URL%
+    echo Branch: %GIT_BRANCH%
+    if not "%GIT_COMMIT%"=="" echo Commit: %GIT_COMMIT%
+    
+    set GIT_REPO_URL=%GIT_REPO_URL%
+    set GIT_BRANCH=%GIT_BRANCH%
+    set GIT_COMMIT=%GIT_COMMIT%
+    docker-compose -f docker-compose.prod.yml build
+)
+
+echo Starting production deployment...
+docker-compose -f docker-compose.prod.yml down
+docker-compose -f docker-compose.prod.yml up -d
+
+echo Deployment completed successfully!
+echo Application is running at http://localhost:3001

deploy.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Production deployment script
+# Usage: ./deploy.sh [git_repo_url] [branch] [commit_hash]
+
+set -e
+
+# Default values
+GIT_REPO_URL=${1:-""}
+GIT_BRANCH=${2:-"ui-fix"}
+GIT_COMMIT=${3:-""}
+
+# Check if .env.production exists and source it
+if [ -f .env.production ]; then
+    echo "Loading production environment variables..."
+    export $(grep -v '^#' .env.production | xargs)
+else
+    echo "Warning: .env.production not found. Make sure environment variables are set!"
+fi
+
+# Validate critical environment variables
+# if [ -z "$NEXTAUTH_SECRET" ] || [ "$NEXTAUTH_SECRET" = "YOUR_SUPER_SECURE_SECRET_KEY_HERE_AT_LEAST_32_CHARACTERS_LONG" ]; then
+#     echo "ERROR: NEXTAUTH_SECRET must be set to a secure random string!"
+#     echo "Generate one with: openssl rand -base64 32"
+#     exit 1
+# fi
+
+if [ -z "$NEXTAUTH_URL" ]; then
+    echo "ERROR: NEXTAUTH_URL must be set to your production URL!"
+    exit 1
+fi
+
+if [ -z "$GIT_REPO_URL" ]; then
+    echo "Building from local files..."
+    docker-compose -f docker-compose.prod.yml build
+else
+    echo "Building from git repository: $GIT_REPO_URL"
+    echo "Branch: $GIT_BRANCH"
+    if [ -n "$GIT_COMMIT" ]; then
+        echo "Commit: $GIT_COMMIT"
+    fi
+    
+    GIT_REPO_URL=$GIT_REPO_URL GIT_BRANCH=$GIT_BRANCH GIT_COMMIT=$GIT_COMMIT \
+    docker-compose -f docker-compose.prod.yml build
+fi
+
+echo "Starting production deployment..."
+docker-compose -f docker-compose.prod.yml down
+docker-compose -f docker-compose.prod.yml up -d
+
+echo "Deployment completed successfully!"
+echo "Application is running at http://localhost:3001"

docker-compose.prod.yml

@@ -0,0 +1,20 @@
+version: "3.9"
+
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        - GIT_REPO_URL=${GIT_REPO_URL}
+        - GIT_BRANCH=${GIT_BRANCH:-main}
+        - GIT_COMMIT=${GIT_COMMIT}
+    ports:
+      - "3001:3000"
+    volumes:
+      - ./data:/app/data
+    environment:
+      - NODE_ENV=production
+      - NEXTAUTH_SECRET=${NEXTAUTH_SECRET:-your-secret-key-generate-a-strong-random-string-at-least-32-characters}
+      - NEXTAUTH_URL=${NEXTAUTH_URL:-https://panel2.wastpol.pl}
+    restart: unless-stopped

docker-compose.yml

@@ -2,9 +2,11 @@ version: "3.9"
 
 services:
   app:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
     ports:
-      - "3000:3000"
+      - "3001:3000"
     volumes:
       - .:/app
       - /app/node_modules

docker-entrypoint-dev.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Development container startup script
+# This runs when the development container starts
+
+echo "🚀 Starting development environment..."
+
+# Ensure data directory exists
+mkdir -p /app/data
+
+# Create admin account if it doesn't exist
+echo "🔧 Setting up admin account..."
+node scripts/create-admin.js
+
+# Start the development server
+echo "✅ Starting development server..."
+exec npm run dev

docker-entrypoint.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Container startup script
+# This runs when the container starts, not during build
+
+echo "🚀 Starting application..."
+
+# Ensure data directory exists
+mkdir -p /app/data
+
+# Create admin account if it doesn't exist
+echo "🔧 Setting up admin account..."
+node scripts/create-admin.js
+
+# Start the application
+echo "✅ Starting production server..."
+exec npm start

init-db-temp.mjs

@@ -0,0 +1,5 @@
+import initializeDatabase from './src/lib/init-db.js';
+
+console.log('Initializing database...');
+initializeDatabase();
+console.log('Database initialized successfully!');

migrate-to-username.js

@@ -0,0 +1,60 @@
+import Database from "better-sqlite3";
+
+const db = new Database("./data/database.sqlite");
+
+console.log("🔄 Migrating database to username-based authentication...\n");
+
+try {
+    // Check current table structure
+    const tableInfo = db.prepare("PRAGMA table_info(users)").all();
+    console.log("Current users table columns:");
+    tableInfo.forEach(col => console.log(`  - ${col.name}: ${col.type}`));
+    
+    const hasUsername = tableInfo.some(col => col.name === 'username');
+    const hasEmail = tableInfo.some(col => col.name === 'email');
+    
+    if (hasUsername) {
+        console.log("✅ Username column already exists!");
+    } else if (hasEmail) {
+        console.log("\n📝 Adding username column...");
+        
+        // Add username column
+        db.exec(`ALTER TABLE users ADD COLUMN username TEXT;`);
+        console.log("✅ Username column added");
+        
+        // Copy email data to username for existing users
+        console.log("📋 Migrating existing email data to username...");
+        const result = db.exec(`UPDATE users SET username = email WHERE username IS NULL;`);
+        console.log("✅ Data migrated");
+        
+        // Create unique index on username
+        console.log("🔍 Creating unique index on username...");
+        try {
+            db.exec(`CREATE UNIQUE INDEX idx_users_username_unique ON users(username);`);
+            console.log("✅ Unique index created");
+        } catch (e) {
+            console.log("ℹ️ Index already exists or couldn't be created:", e.message);
+        }
+        
+        // Verify migration
+        console.log("\n🔍 Verifying migration...");
+        const users = db.prepare("SELECT id, name, username, email FROM users LIMIT 3").all();
+        console.log("Sample users after migration:");
+        users.forEach(user => {
+            console.log(`  - ${user.name}: username="${user.username}", email="${user.email || 'NULL'}"`);
+        });
+        
+        console.log("\n✅ Migration completed successfully!");
+        console.log("ℹ️  You can now log in using usernames instead of emails");
+        
+    } else {
+        console.log("❌ Neither username nor email column found. Database may be corrupted.");
+        process.exit(1);
+    }
+    
+} catch (error) {
+    console.error("❌ Migration failed:", error.message);
+    process.exit(1);
+} finally {
+    db.close();
+}

package.json

@@ -8,6 +8,7 @@
     "build": "next build",
     "start": "next start",
     "lint": "next lint",
+    "create-admin": "node scripts/create-admin.js",
     "test": "jest",
     "test:watch": "jest --watch",
     "test:coverage": "jest --coverage",

scripts/create-admin.js

@@ -10,13 +10,13 @@ async function createInitialAdmin() {
     
     const adminUser = await createUser({
       name: "Administrator",
-      email: "admin@localhost.com",
+      username: "admin",
       password: "admin123456", // Change this in production!
       role: "admin"
     })
     
     console.log("✅ Initial admin user created successfully!")
-    console.log("📧 Email: admin@localhost.com")
+    console.log("<EFBFBD> Username: admin")
     console.log("🔑 Password: admin123456")
     console.log("⚠️  Please change the password after first login!")
     console.log("👤 User ID:", adminUser.id)

src/app/admin/users/[id]/edit/page.js

@@ -15,7 +15,7 @@ export default function EditUserPage() {
 	const [user, setUser] = useState(null);
 	const [formData, setFormData] = useState({
 		name: "",
-		email: "",
+		username: "",
 		role: "user",
 		is_active: true,
 		password: ""
@@ -62,7 +62,7 @@ export default function EditUserPage() {
 			setUser(userData);
 			setFormData({
 				name: userData.name,
-				email: userData.email,
+				username: userData.username,
 				role: userData.role,
 				is_active: userData.is_active,
 				password: "" // Never populate password field
@@ -84,7 +84,7 @@ export default function EditUserPage() {
 			// Prepare update data (exclude empty password)
 			const updateData = {
 				name: formData.name,
-				email: formData.email,
+				username: formData.username,
 				role: formData.role,
 				is_active: formData.is_active
 			};
@@ -209,12 +209,12 @@ export default function EditUserPage() {
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Email *
+									Username *
 								</label>
 								<Input
-									type="email"
-									value={formData.email}
-									onChange={(e) => setFormData({ ...formData, email: e.target.value })}
+									type="text"
+									value={formData.username}
+									onChange={(e) => setFormData({ ...formData, username: e.target.value })}
 									required
 								/>
 							</div>

src/app/admin/users/page.js

@@ -12,8 +12,10 @@ import PageContainer from "@/components/ui/PageContainer";
 import PageHeader from "@/components/ui/PageHeader";
 import { LoadingState } from "@/components/ui/States";
 import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function UserManagementPage() {
+	const { t } = useTranslation();
 	const [users, setUsers] = useState([]);
 	const [loading, setLoading] = useState(true);
 	const [error, setError] = useState("");
@@ -54,7 +56,7 @@ export default function UserManagementPage() {
 	};
 
 	const handleDeleteUser = async (userId) => {
-		if (!confirm("Are you sure you want to delete this user?")) return;
+		if (!confirm(t('admin.deleteUser') + "?")) return;
 
 		try {
 			const response = await fetch(`/api/admin/users/${userId}`, {
@@ -141,7 +143,7 @@ export default function UserManagementPage() {
 
 	return (
 		<PageContainer>
-			<PageHeader title="User Management" description="Manage system users and permissions">
+			<PageHeader title={t('admin.userManagement')} description={t('admin.subtitle')}>
 				<Button 
 					variant="primary" 
 					onClick={() => setShowCreateForm(true)}
@@ -149,7 +151,7 @@ export default function UserManagementPage() {
 					<svg className="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
 						<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
 					</svg>
-					Add User
+					{t('admin.newUser')}
 				</Button>
 			</PageHeader>
 
@@ -192,7 +194,7 @@ export default function UserManagementPage() {
 												</div>
 												<div>
 													<h3 className="text-lg font-semibold text-gray-900">{user.name}</h3>
-													<p className="text-sm text-gray-500">{user.email}</p>
+													<p className="text-sm text-gray-500">{user.username}</p>
 												</div>
 											</div>
 											<div className="flex items-center space-x-2">
@@ -282,7 +284,7 @@ export default function UserManagementPage() {
 function CreateUserModal({ onClose, onUserCreated }) {
 	const [formData, setFormData] = useState({
 		name: "",
-		email: "",
+		username: "",
 		password: "",
 		role: "user",
 		is_active: true
@@ -351,12 +353,12 @@ function CreateUserModal({ onClose, onUserCreated }) {
 
 					<div>
 						<label className="block text-sm font-medium text-gray-700 mb-1">
-							Email
+							Username
 						</label>
 						<Input
-							type="email"
-							value={formData.email}
-							onChange={(e) => setFormData({ ...formData, email: e.target.value })}
+							type="text"
+							value={formData.username}
+							onChange={(e) => setFormData({ ...formData, username: e.target.value })}
 							required
 						/>
 					</div>

src/app/api/admin/users/[id]/route.js

@@ -78,7 +78,7 @@ async function updateUserHandler(req, { params }) {
 		
 		if (error.message.includes("already exists")) {
 			return NextResponse.json(
-				{ error: "A user with this email already exists" },
+				{ error: "A user with this username already exists" },
 				{ status: 409 }
 			);
 		}

src/app/api/admin/users/route.js

@@ -27,9 +27,9 @@ async function createUserHandler(req) {
 		const data = await req.json();
 		
 		// Validate required fields
-		if (!data.name || !data.email || !data.password) {
+		if (!data.name || !data.username || !data.password) {
 			return NextResponse.json(
-				{ error: "Name, email, and password are required" },
+				{ error: "Name, username, and password are required" },
 				{ status: 400 }
 			);
 		}
@@ -53,7 +53,7 @@ async function createUserHandler(req) {
 
 		const newUser = await createUser({
 			name: data.name,
-			email: data.email,
+			username: data.username,
 			password: data.password,
 			role: data.role || "user",
 			is_active: data.is_active !== undefined ? data.is_active : true
@@ -68,7 +68,7 @@ async function createUserHandler(req) {
 		
 		if (error.message.includes("already exists")) {
 			return NextResponse.json(
-				{ error: "A user with this email already exists" },
+				{ error: "A user with this username already exists" },
 				{ status: 409 }
 			);
 		}

src/app/api/field-history/route.js

@@ -0,0 +1,46 @@
+// Force this API route to use Node.js runtime for database access
+export const runtime = "nodejs";
+
+import { getFieldHistory, hasFieldHistory } from "@/lib/queries/fieldHistory";
+import { NextResponse } from "next/server";
+import { withReadAuth } from "@/lib/middleware/auth";
+import initializeDatabase from "@/lib/init-db";
+
+// Make sure the DB is initialized before queries run
+initializeDatabase();
+
+async function getFieldHistoryHandler(req) {
+	const { searchParams } = new URL(req.url);
+	const tableName = searchParams.get("table_name");
+	const recordId = searchParams.get("record_id");
+	const fieldName = searchParams.get("field_name");
+	const checkOnly = searchParams.get("check_only") === "true";
+
+	if (!tableName || !recordId || !fieldName) {
+		return NextResponse.json(
+			{ error: "Missing required parameters: table_name, record_id, field_name" },
+			{ status: 400 }
+		);
+	}
+
+	try {
+		if (checkOnly) {
+			// Just check if history exists
+			const exists = hasFieldHistory(tableName, parseInt(recordId), fieldName);
+			return NextResponse.json({ hasHistory: exists });
+		} else {
+			// Get full history
+			const history = getFieldHistory(tableName, parseInt(recordId), fieldName);
+			return NextResponse.json(history);
+		}
+	} catch (error) {
+		console.error("Error fetching field history:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch field history" },
+			{ status: 500 }
+		);
+	}
+}
+
+// Protected route - require read authentication
+export const GET = withReadAuth(getFieldHistoryHandler);

src/app/api/files/[fileId]/route.js

@@ -0,0 +1,79 @@
+import { NextResponse } from "next/server";
+import { unlink } from "fs/promises";
+import path from "path";
+import db from "@/lib/db";
+
+export async function DELETE(request, { params }) {
+	try {
+		const fileId = params.fileId;
+
+		// Get file info from database
+		const file = db.prepare(`
+			SELECT * FROM file_attachments WHERE file_id = ?
+		`).get(parseInt(fileId));
+
+		if (!file) {
+			return NextResponse.json(
+				{ error: "File not found" },
+				{ status: 404 }
+			);
+		}
+
+		// Delete physical file
+		try {
+			const fullPath = path.join(process.cwd(), "public", file.file_path);
+			await unlink(fullPath);
+		} catch (fileError) {
+			console.warn("Could not delete physical file:", fileError.message);
+			// Continue with database deletion even if file doesn't exist
+		}
+
+		// Delete from database
+		const result = db.prepare(`
+			DELETE FROM file_attachments WHERE file_id = ?
+		`).run(parseInt(fileId));
+
+		if (result.changes === 0) {
+			return NextResponse.json(
+				{ error: "File not found" },
+				{ status: 404 }
+			);
+		}
+
+		return NextResponse.json({ success: true });
+
+	} catch (error) {
+		console.error("Error deleting file:", error);
+		return NextResponse.json(
+			{ error: "Failed to delete file" },
+			{ status: 500 }
+		);
+	}
+}
+
+export async function GET(request, { params }) {
+	try {
+		const fileId = params.fileId;
+
+		// Get file info from database
+		const file = db.prepare(`
+			SELECT * FROM file_attachments WHERE file_id = ?
+		`).get(parseInt(fileId));
+
+		if (!file) {
+			return NextResponse.json(
+				{ error: "File not found" },
+				{ status: 404 }
+			);
+		}
+
+		return NextResponse.json(file);
+
+	} catch (error) {
+		console.error("Error fetching file:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch file" },
+			{ status: 500 }
+		);
+	}
+}

src/app/api/files/route.js

@@ -0,0 +1,162 @@
+import { NextRequest, NextResponse } from "next/server";
+import { writeFile, mkdir } from "fs/promises";
+import { existsSync } from "fs";
+import path from "path";
+import db from "@/lib/db";
+import { auditLog } from "@/lib/middleware/auditLog";
+
+const UPLOAD_DIR = path.join(process.cwd(), "public", "uploads");
+const MAX_FILE_SIZE = 10 * 1024 * 1024; // 10MB
+const ALLOWED_TYPES = [
+	"application/pdf",
+	"application/msword",
+	"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+	"application/vnd.ms-excel",
+	"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+	"image/jpeg",
+	"image/png",
+	"image/gif",
+	"text/plain"
+];
+
+export async function POST(request) {
+	try {
+		const formData = await request.formData();
+		const file = formData.get("file");
+		const entityType = formData.get("entityType");
+		const entityId = formData.get("entityId");
+		const description = formData.get("description") || "";
+
+		if (!file || !entityType || !entityId) {
+			return NextResponse.json(
+				{ error: "File, entityType, and entityId are required" },
+				{ status: 400 }
+			);
+		}
+
+		// Validate entity type
+		if (!["contract", "project", "task"].includes(entityType)) {
+			return NextResponse.json(
+				{ error: "Invalid entity type" },
+				{ status: 400 }
+			);
+		}
+
+		// Validate file
+		if (file.size > MAX_FILE_SIZE) {
+			return NextResponse.json(
+				{ error: "File size too large (max 10MB)" },
+				{ status: 400 }
+			);
+		}
+
+		if (!ALLOWED_TYPES.includes(file.type)) {
+			return NextResponse.json(
+				{ error: "File type not allowed" },
+				{ status: 400 }
+			);
+		}
+
+		// Create upload directory structure
+		const entityDir = path.join(UPLOAD_DIR, entityType + "s", entityId);
+		if (!existsSync(entityDir)) {
+			await mkdir(entityDir, { recursive: true });
+		}
+
+		// Generate unique filename
+		const timestamp = Date.now();
+		const sanitizedOriginalName = file.name.replace(/[^a-zA-Z0-9.-]/g, "_");
+		const storedFilename = `${timestamp}_${sanitizedOriginalName}`;
+		const filePath = path.join(entityDir, storedFilename);
+		const relativePath = `/uploads/${entityType}s/${entityId}/${storedFilename}`;
+
+		// Save file
+		const bytes = await file.arrayBuffer();
+		const buffer = Buffer.from(bytes);
+		await writeFile(filePath, buffer);
+
+		// Save to database
+		const stmt = db.prepare(`
+			INSERT INTO file_attachments (
+				entity_type, entity_id, original_filename, stored_filename, 
+				file_path, file_size, mime_type, description, uploaded_by
+			) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`);
+
+		const result = stmt.run(
+			entityType,
+			parseInt(entityId),
+			file.name,
+			storedFilename,
+			relativePath,
+			file.size,
+			file.type,
+			description,
+			null // TODO: Get from session when auth is implemented
+		);
+
+		const newFile = {
+			file_id: result.lastInsertRowid,
+			entity_type: entityType,
+			entity_id: parseInt(entityId),
+			original_filename: file.name,
+			stored_filename: storedFilename,
+			file_path: relativePath,
+			file_size: file.size,
+			mime_type: file.type,
+			description: description,
+			upload_date: new Date().toISOString()
+		};
+
+		return NextResponse.json(newFile, { status: 201 });
+
+	} catch (error) {
+		console.error("File upload error:", error);
+		return NextResponse.json(
+			{ error: "Failed to upload file" },
+			{ status: 500 }
+		);
+	}
+}
+
+export async function GET(request) {
+	try {
+		const { searchParams } = new URL(request.url);
+		const entityType = searchParams.get("entityType");
+		const entityId = searchParams.get("entityId");
+
+		if (!entityType || !entityId) {
+			return NextResponse.json(
+				{ error: "entityType and entityId are required" },
+				{ status: 400 }
+			);
+		}
+
+		const files = db.prepare(`
+			SELECT 
+				file_id,
+				entity_type,
+				entity_id,
+				original_filename,
+				stored_filename,
+				file_path,
+				file_size,
+				mime_type,
+				description,
+				upload_date,
+				uploaded_by
+			FROM file_attachments 
+			WHERE entity_type = ? AND entity_id = ?
+			ORDER BY upload_date DESC
+		`).all(entityType, parseInt(entityId));
+
+		return NextResponse.json(files);
+
+	} catch (error) {
+		console.error("Error fetching files:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch files" },
+			{ status: 500 }
+		);
+	}
+}

src/app/api/notes/[id]/route.js

@@ -0,0 +1,72 @@
+// Force this API route to use Node.js runtime for database access
+export const runtime = "nodejs";
+
+import db from "@/lib/db";
+import { NextResponse } from "next/server";
+import { withUserAuth } from "@/lib/middleware/auth";
+import {
+	logApiActionSafe,
+	AUDIT_ACTIONS,
+	RESOURCE_TYPES,
+} from "@/lib/auditLogSafe.js";
+import initializeDatabase from "@/lib/init-db";
+
+// Make sure the DB is initialized before queries run
+initializeDatabase();
+
+async function deleteNoteHandler(req, { params }) {
+	const { id } = await params;
+
+	if (!id) {
+		return NextResponse.json({ error: "Note ID is required" }, { status: 400 });
+	}
+
+	try {
+		// Get note data before deletion for audit log
+		const note = db.prepare("SELECT * FROM notes WHERE note_id = ?").get(id);
+
+		if (!note) {
+			return NextResponse.json({ error: "Note not found" }, { status: 404 });
+		}
+
+		// Check if user has permission to delete this note
+		// Users can delete their own notes, or admins can delete any note
+		const userRole = req.user?.role;
+		const userId = req.user?.id;
+
+		if (userRole !== 'admin' && note.created_by !== userId) {
+			return NextResponse.json({ error: "Unauthorized to delete this note" }, { status: 403 });
+		}
+
+		// Delete the note
+		db.prepare("DELETE FROM notes WHERE note_id = ?").run(id);
+
+		// Log note deletion
+		await logApiActionSafe(
+			req,
+			AUDIT_ACTIONS.NOTE_DELETE,
+			RESOURCE_TYPES.NOTE,
+			id,
+			req.auth,
+			{
+				deletedNote: {
+					project_id: note?.project_id,
+					task_id: note?.task_id,
+					note_length: note?.note?.length || 0,
+					created_by: note?.created_by,
+				},
+			}
+		);
+
+		return NextResponse.json({ success: true });
+	} catch (error) {
+		console.error("Error deleting note:", error);
+		return NextResponse.json(
+			{ error: "Failed to delete note", details: error.message },
+			{ status: 500 }
+		);
+	}
+}
+
+// Protected route - require user authentication
+export const DELETE = withUserAuth(deleteNoteHandler);

src/app/api/notes/route.js

@@ -3,13 +3,59 @@ export const runtime = "nodejs";
 
 import db from "@/lib/db";
 import { NextResponse } from "next/server";
-import { withUserAuth } from "@/lib/middleware/auth";
+import { withUserAuth, withReadAuth } from "@/lib/middleware/auth";
 import {
 	logApiActionSafe,
 	AUDIT_ACTIONS,
 	RESOURCE_TYPES,
 } from "@/lib/auditLogSafe.js";
 
+async function getNotesHandler(req) {
+	const { searchParams } = new URL(req.url);
+	const projectId = searchParams.get("project_id");
+	const taskId = searchParams.get("task_id");
+
+	let query;
+	let params;
+
+	if (projectId) {
+		query = `
+			SELECT n.*, 
+				   u.name as created_by_name,
+				   u.username as created_by_username
+			FROM notes n
+			LEFT JOIN users u ON n.created_by = u.id
+			WHERE n.project_id = ?
+			ORDER BY n.note_date DESC
+		`;
+		params = [projectId];
+	} else if (taskId) {
+		query = `
+			SELECT n.*, 
+				   u.name as created_by_name,
+				   u.username as created_by_username
+			FROM notes n
+			LEFT JOIN users u ON n.created_by = u.id
+			WHERE n.task_id = ?
+			ORDER BY n.note_date DESC
+		`;
+		params = [taskId];
+	} else {
+		return NextResponse.json({ error: "project_id or task_id is required" }, { status: 400 });
+	}
+
+	try {
+		const notes = db.prepare(query).all(...params);
+		return NextResponse.json(notes);
+	} catch (error) {
+		console.error("Error fetching notes:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch notes" },
+			{ status: 500 }
+		);
+	}
+}
+
 async function createNoteHandler(req) {
 	const { project_id, task_id, note } = await req.json();
 
@@ -118,6 +164,7 @@ async function updateNoteHandler(req, { params }) {
 }
 
 // Protected routes - require authentication
+export const GET = withReadAuth(getNotesHandler);
 export const POST = withUserAuth(createNoteHandler);
 export const DELETE = withUserAuth(deleteNoteHandler);
 export const PUT = withUserAuth(updateNoteHandler);

src/app/api/project-tasks/[id]/route.js

@@ -1,13 +1,45 @@
 import {
 	updateProjectTaskStatus,
 	deleteProjectTask,
+	updateProjectTask,
 } from "@/lib/queries/tasks";
 import { NextResponse } from "next/server";
 import { withUserAuth } from "@/lib/middleware/auth";
 
-// PATCH: Update project task status
+// PUT: Update project task (general update)
 async function updateProjectTaskHandler(req, { params }) {
 	try {
+		const { id } = await params;
+		const updates = await req.json();
+
+		// Validate that we have at least one field to update
+		const allowedFields = ["priority", "status", "assigned_to", "date_started"];
+		const hasValidFields = Object.keys(updates).some((key) =>
+			allowedFields.includes(key)
+		);
+
+		if (!hasValidFields) {
+			return NextResponse.json(
+				{ error: "No valid fields provided for update" },
+				{ status: 400 }
+			);
+		}
+
+		updateProjectTask(id, updates, req.user?.id || null);
+		return NextResponse.json({ success: true });
+	} catch (error) {
+		console.error("Error updating task:", error);
+		return NextResponse.json(
+			{ error: "Failed to update project task", details: error.message },
+			{ status: 500 }
+		);
+	}
+}
+
+// PATCH: Update project task status
+async function updateProjectTaskStatusHandler(req, { params }) {
+	try {
+		const { id } = await params;
 		const { status } = await req.json();
 
 		if (!status) {
@@ -17,7 +49,7 @@ async function updateProjectTaskHandler(req, { params }) {
 			);
 		}
 
-		updateProjectTaskStatus(params.id, status, req.user?.id || null);
+		updateProjectTaskStatus(id, status, req.user?.id || null);
 		return NextResponse.json({ success: true });
 	} catch (error) {
 		console.error("Error updating task status:", error);
@@ -31,16 +63,19 @@ async function updateProjectTaskHandler(req, { params }) {
 // DELETE: Delete a project task
 async function deleteProjectTaskHandler(req, { params }) {
 	try {
-		deleteProjectTask(params.id);
+		const { id } = await params;
+		const result = deleteProjectTask(id);
 		return NextResponse.json({ success: true });
 	} catch (error) {
+		console.error("Error in deleteProjectTaskHandler:", error);
 		return NextResponse.json(
-			{ error: "Failed to delete project task" },
+			{ error: "Failed to delete project task", details: error.message },
 			{ status: 500 }
 		);
 	}
 }
 
 // Protected routes - require authentication
-export const PATCH = withUserAuth(updateProjectTaskHandler);
+export const PUT = withUserAuth(updateProjectTaskHandler);
+export const PATCH = withUserAuth(updateProjectTaskStatusHandler);
 export const DELETE = withUserAuth(deleteProjectTaskHandler);

src/app/api/projects/[id]/finish-date-updates/route.js

@@ -0,0 +1,24 @@
+// Force this API route to use Node.js runtime for database access
+export const runtime = "nodejs";
+
+import { getFinishDateUpdates } from "@/lib/queries/projects";
+import { NextResponse } from "next/server";
+import { withReadAuth } from "@/lib/middleware/auth";
+
+async function getFinishDateUpdatesHandler(req, { params }) {
+	const { id } = await params;
+	
+	try {
+		const updates = getFinishDateUpdates(parseInt(id));
+		return NextResponse.json(updates);
+	} catch (error) {
+		console.error("Error fetching finish date updates:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch finish date updates" },
+			{ status: 500 }
+		);
+	}
+}
+
+// Protected route - require authentication
+export const GET = withReadAuth(getFinishDateUpdatesHandler);

src/app/api/projects/[id]/route.js

@@ -3,9 +3,12 @@ export const runtime = "nodejs";
 
 import {
 	getProjectById,
+	getProjectWithContract,
 	updateProject,
 	deleteProject,
 } from "@/lib/queries/projects";
+import { logFieldChange } from "@/lib/queries/fieldHistory";
+import { addNoteToProject } from "@/lib/queries/notes";
 import initializeDatabase from "@/lib/init-db";
 import { NextResponse } from "next/server";
 import { withReadAuth, withUserAuth } from "@/lib/middleware/auth";
@@ -20,7 +23,7 @@ initializeDatabase();
 
 async function getProjectHandler(req, { params }) {
 	const { id } = await params;
-	const project = getProjectById(parseInt(id));
+	const project = getProjectWithContract(parseInt(id));
 
 	if (!project) {
 		return NextResponse.json({ error: "Project not found" }, { status: 404 });
@@ -40,15 +43,58 @@ async function getProjectHandler(req, { params }) {
 }
 
 async function updateProjectHandler(req, { params }) {
+	try {
 		const { id } = await params;
 		const data = await req.json();
 
 		// Get user ID from authenticated request
 		const userId = req.user?.id;
 
-	// Get original project data for audit log
+		// Get original project data for audit log and field tracking
 		const originalProject = getProjectById(parseInt(id));
 
+		if (!originalProject) {
+			return NextResponse.json({ error: "Project not found" }, { status: 404 });
+		}
+
+		// Track field changes for specific fields we want to monitor
+		const fieldsToTrack = ['finish_date', 'project_status', 'assigned_to', 'contract_id'];
+		
+		for (const fieldName of fieldsToTrack) {
+			if (data.hasOwnProperty(fieldName)) {
+				const oldValue = originalProject[fieldName];
+				const newValue = data[fieldName];
+				
+				if (oldValue !== newValue) {
+					try {
+						logFieldChange('projects', parseInt(id), fieldName, oldValue, newValue, userId);
+					} catch (error) {
+						console.error(`Failed to log field change for ${fieldName}:`, error);
+					}
+				}
+			}
+		}
+
+		// Special handling for project cancellation
+		if (data.project_status === 'cancelled' && originalProject.project_status !== 'cancelled') {
+			const now = new Date();
+			const cancellationDate = now.toLocaleDateString('pl-PL', {
+				year: 'numeric',
+				month: '2-digit', 
+				day: '2-digit',
+				hour: '2-digit',
+				minute: '2-digit'
+			});
+			
+			const cancellationNote = `Projekt został wycofany w dniu ${cancellationDate}`;
+			
+			try {
+				addNoteToProject(parseInt(id), cancellationNote, userId, true); // true for is_system
+			} catch (error) {
+				console.error('Failed to log project cancellation:', error);
+			}
+		}
+
 		updateProject(parseInt(id), data, userId);
 
 		// Get updated project
@@ -69,6 +115,13 @@ async function updateProjectHandler(req, { params }) {
 		);
 
 		return NextResponse.json(updatedProject);
+	} catch (error) {
+		console.error("Error in updateProjectHandler:", error);
+		return NextResponse.json(
+			{ error: "Internal server error", details: error.message },
+			{ status: 500 }
+		);
+	}
 }
 
 async function deleteProjectHandler(req, { params }) {

src/app/api/task-notes/[id]/route.js

@@ -0,0 +1,48 @@
+import { deleteNote } from "@/lib/queries/notes";
+import { NextResponse } from "next/server";
+import { withUserAuth } from "@/lib/middleware/auth";
+import db from "@/lib/db";
+
+// DELETE: Delete a specific task note
+async function deleteTaskNoteHandler(req, { params }) {
+	try {
+		const { id } = await params;
+
+		if (!id) {
+			return NextResponse.json({ error: "Note ID is required" }, { status: 400 });
+		}
+
+		// Get note data before deletion for permission checking
+		const note = db.prepare("SELECT * FROM notes WHERE note_id = ?").get(id);
+
+		if (!note) {
+			return NextResponse.json({ error: "Note not found" }, { status: 404 });
+		}
+
+		// Check if user has permission to delete this note
+		// Users can delete their own notes, or admins can delete any note
+		const userRole = req.user?.role;
+		const userId = req.user?.id;
+
+		if (userRole !== 'admin' && note.created_by !== userId) {
+			return NextResponse.json({ error: "Unauthorized to delete this note" }, { status: 403 });
+		}
+
+		// Don't allow deletion of system notes by regular users
+		if (note.is_system && userRole !== 'admin') {
+			return NextResponse.json({ error: "Cannot delete system notes" }, { status: 403 });
+		}
+
+		deleteNote(id);
+		return NextResponse.json({ success: true });
+	} catch (error) {
+		console.error("Error deleting task note:", error);
+		return NextResponse.json(
+			{ error: "Failed to delete task note" },
+			{ status: 500 }
+		);
+	}
+}
+
+// Protected route - require user authentication
+export const DELETE = withUserAuth(deleteTaskNoteHandler);

src/app/auth/signin/page.js

@@ -6,7 +6,7 @@ import { useRouter } from "next/navigation"
 import { useSearchParams } from "next/navigation"
 
 function SignInContent() {
-  const [email, setEmail] = useState("")
+  const [username, setUsername] = useState("")
   const [password, setPassword] = useState("")
   const [error, setError] = useState("")
   const [isLoading, setIsLoading] = useState(false)
@@ -21,13 +21,13 @@ function SignInContent() {
 
     try {
       const result = await signIn("credentials", {
-        email,
+        username,
         password,
         redirect: false,
       })
 
       if (result?.error) {
-        setError("Invalid email or password")
+        setError("Invalid username or password")
       } else {
         // Successful login
         router.push(callbackUrl)
@@ -45,10 +45,10 @@ function SignInContent() {
       <div className="max-w-md w-full space-y-8">
         <div>
           <h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900">
-            Sign in to your account
+            Zaloguj się do swojego konta
           </h2>
           <p className="mt-2 text-center text-sm text-gray-600">
-            Access the Project Management Panel
+            Dostęp do panelu
           </p>
         </div>
         <form className="mt-8 space-y-6" onSubmit={handleSubmit}>
@@ -60,24 +60,24 @@ function SignInContent() {
           
           <div className="rounded-md shadow-sm -space-y-px">
             <div>
-              <label htmlFor="email" className="sr-only">
-                Email address
+              <label htmlFor="username" className="sr-only">
+                Nazwa użytkownika
               </label>
               <input
-                id="email"
-                name="email"
-                type="email"
-                autoComplete="email"
+                id="username"
+                name="username"
+                type="text"
+                autoComplete="username"
                 required
                 className="appearance-none rounded-none relative block w-full px-3 py-2 border border-gray-300 placeholder-gray-500 text-gray-900 rounded-t-md focus:outline-none focus:ring-blue-500 focus:border-blue-500 focus:z-10 sm:text-sm"
-                placeholder="Email address"
-                value={email}
-                onChange={(e) => setEmail(e.target.value)}
+                placeholder="Nazwa użytkownika"
+                value={username}
+                onChange={(e) => setUsername(e.target.value)}
               />
             </div>
             <div>
               <label htmlFor="password" className="sr-only">
-                Password
+                Hasło
               </label>
               <input
                 id="password"
@@ -105,7 +105,7 @@ function SignInContent() {
                     <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
                     <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
                   </svg>
-                  Signing in...
+                  Zaloguj...
                 </span>
               ) : (
                 "Sign in"
@@ -113,13 +113,13 @@ function SignInContent() {
             </button>
           </div>
 
-          <div className="text-center">
+          {/* <div className="text-center">
             <div className="text-sm text-gray-600 bg-blue-50 p-3 rounded">
               <p className="font-medium">Default Admin Account:</p>
               <p>Email: admin@localhost</p>
               <p>Password: admin123456</p>
             </div>
-          </div>
+          </div> */}
         </form>
       </div>
     </div>

src/app/calendar/page.js

@@ -0,0 +1,361 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import Link from "next/link";
+import { Card, CardHeader, CardContent } from "@/components/ui/Card";
+import Button from "@/components/ui/Button";
+import Badge from "@/components/ui/Badge";
+import PageContainer from "@/components/ui/PageContainer";
+import PageHeader from "@/components/ui/PageHeader";
+import { LoadingState } from "@/components/ui/States";
+import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
+import {
+	format,
+	startOfMonth,
+	endOfMonth,
+	startOfWeek,
+	endOfWeek,
+	addDays,
+	isSameMonth,
+	isSameDay,
+	addMonths,
+	subMonths,
+	parseISO,
+	isAfter,
+	isBefore,
+	startOfDay,
+	addWeeks
+} from "date-fns";
+import { pl } from "date-fns/locale";
+
+const statusColors = {
+	registered: "bg-blue-100 text-blue-800",
+	approved: "bg-green-100 text-green-800", 
+	pending: "bg-yellow-100 text-yellow-800",
+	in_progress: "bg-orange-100 text-orange-800",
+	fulfilled: "bg-gray-100 text-gray-800",
+};
+
+const statusTranslations = {
+	registered: "Zarejestrowany",
+	approved: "Zatwierdzony",
+	pending: "Oczekujący",
+	in_progress: "W trakcie",
+	fulfilled: "Zakończony",
+};
+
+export default function ProjectCalendarPage() {
+	const { t } = useTranslation();
+	const [projects, setProjects] = useState([]);
+	const [loading, setLoading] = useState(true);
+	const [currentDate, setCurrentDate] = useState(new Date());
+	const [viewMode, setViewMode] = useState('month'); // 'month' or 'upcoming'
+
+	useEffect(() => {
+		fetch("/api/projects")
+			.then((res) => res.json())
+			.then((data) => {
+				// Filter projects that have finish dates and are not fulfilled
+				const projectsWithDates = data.filter(p => 
+					p.finish_date && p.project_status !== 'fulfilled'
+				);
+				setProjects(projectsWithDates);
+				setLoading(false);
+			})
+			.catch((error) => {
+				console.error("Error fetching projects:", error);
+				setLoading(false);
+			});
+	}, []);
+
+	const getProjectsForDate = (date) => {
+		return projects.filter(project => {
+			if (!project.finish_date) return false;
+			try {
+				const projectDate = parseISO(project.finish_date);
+				return isSameDay(projectDate, date);
+			} catch (error) {
+				return false;
+			}
+		});
+	};
+
+	const getUpcomingProjects = () => {
+		const today = startOfDay(new Date());
+		const nextMonth = addWeeks(today, 4);
+		
+		return projects
+			.filter(project => {
+				if (!project.finish_date) return false;
+				try {
+					const projectDate = parseISO(project.finish_date);
+					return isAfter(projectDate, today) && isBefore(projectDate, nextMonth);
+				} catch (error) {
+					return false;
+				}
+			})
+			.sort((a, b) => {
+				const dateA = parseISO(a.finish_date);
+				const dateB = parseISO(b.finish_date);
+				return dateA - dateB;
+			});
+	};
+
+	const getOverdueProjects = () => {
+		const today = startOfDay(new Date());
+		
+		return projects
+			.filter(project => {
+				if (!project.finish_date) return false;
+				try {
+					const projectDate = parseISO(project.finish_date);
+					return isBefore(projectDate, today);
+				} catch (error) {
+					return false;
+				}
+			})
+			.sort((a, b) => {
+				const dateA = parseISO(a.finish_date);
+				const dateB = parseISO(b.finish_date);
+				return dateB - dateA; // Most recently overdue first
+			});
+	};
+
+	const renderCalendarGrid = () => {
+		const monthStart = startOfMonth(currentDate);
+		const monthEnd = endOfMonth(currentDate);
+		const calendarStart = startOfWeek(monthStart, { weekStartsOn: 1 });
+		const calendarEnd = endOfWeek(monthEnd, { weekStartsOn: 1 });
+
+		const days = [];
+		let day = calendarStart;
+
+		while (day <= calendarEnd) {
+			days.push(day);
+			day = addDays(day, 1);
+		}
+
+		const weekdays = ['Pon', 'Wt', 'Śr', 'Czw', 'Pt', 'Sob', 'Nie'];
+
+		return (
+			<div className="bg-white rounded-lg shadow">
+				{/* Calendar Header */}
+				<div className="p-4 border-b border-gray-200">
+					<div className="flex items-center justify-between">
+						<h2 className="text-lg font-semibold text-gray-900">
+							{format(currentDate, 'LLLL yyyy', { locale: pl })}
+						</h2>
+						<div className="flex space-x-2">
+							<Button
+								variant="outline"
+								size="sm"
+								onClick={() => setCurrentDate(subMonths(currentDate, 1))}
+							>
+								←
+							</Button>
+							<Button
+								variant="outline"
+								size="sm"
+								onClick={() => setCurrentDate(new Date())}
+							>
+								Dziś
+							</Button>
+							<Button
+								variant="outline"
+								size="sm"
+								onClick={() => setCurrentDate(addMonths(currentDate, 1))}
+							>
+								→
+							</Button>
+						</div>
+					</div>
+				</div>
+
+				{/* Weekday Headers */}
+				<div className="grid grid-cols-7 border-b border-gray-200">
+					{weekdays.map(weekday => (
+						<div key={weekday} className="p-2 text-sm font-medium text-gray-500 text-center">
+							{weekday}
+						</div>
+					))}
+				</div>
+
+				{/* Calendar Grid */}
+				<div className="grid grid-cols-7">
+					{days.map((day, index) => {
+						const dayProjects = getProjectsForDate(day);
+						const isCurrentMonth = isSameMonth(day, currentDate);
+						const isToday = isSameDay(day, new Date());
+						
+						return (
+							<div
+								key={index}
+								className={`min-h-[120px] p-2 border-r border-b border-gray-100 ${
+									!isCurrentMonth ? 'bg-gray-50' : 'bg-white'
+								} ${isToday ? 'bg-blue-50' : ''}`}
+							>
+								<div className={`text-sm font-medium mb-2 ${
+									!isCurrentMonth ? 'text-gray-400' : isToday ? 'text-blue-600' : 'text-gray-900'
+								}`}>
+									{format(day, 'd')}
+								</div>
+								
+								{dayProjects.length > 0 && (
+									<div className="space-y-1">
+										{dayProjects.slice(0, 3).map(project => (
+											<Link
+												key={project.project_id}
+												href={`/projects/${project.project_id}`}
+												className="block"
+											>
+												<div className={`text-xs p-1 rounded truncate ${
+													statusColors[project.project_status] || statusColors.registered
+												} hover:opacity-80 transition-opacity`}>
+													{project.project_name}
+												</div>
+											</Link>
+										))}
+										{dayProjects.length > 3 && (
+											<div className="text-xs text-gray-500 p-1">
+												+{dayProjects.length - 3} więcej
+											</div>
+										)}
+									</div>
+								)}
+							</div>
+						);
+					})}
+				</div>
+			</div>
+		);
+	};
+
+	const renderUpcomingView = () => {
+		const upcomingProjects = getUpcomingProjects();
+		const overdueProjects = getOverdueProjects();
+
+		return (
+			<div className="space-y-6">
+				{/* Overdue Projects */}
+				{overdueProjects.length > 0 && (
+					<Card>
+						<CardHeader>
+							<h3 className="text-lg font-semibold text-red-600">
+								Projekty przeterminowane ({overdueProjects.length})
+							</h3>
+						</CardHeader>
+						<CardContent>
+							<div className="space-y-3">
+								{overdueProjects.map(project => (
+									<div key={project.project_id} className="flex items-center justify-between p-3 bg-red-50 rounded-lg border border-red-200">
+										<div className="flex-1">
+											<Link 
+												href={`/projects/${project.project_id}`}
+												className="font-medium text-gray-900 hover:text-blue-600"
+											>
+												{project.project_name}
+											</Link>
+											<div className="text-sm text-gray-600 mt-1">
+												{project.customer && `${project.customer} • `}
+												{project.address}
+											</div>
+										</div>
+										<div className="text-right">
+											<div className="text-sm font-medium text-red-600">
+												{formatDate(project.finish_date)}
+											</div>
+											<Badge className={statusColors[project.project_status] || statusColors.registered}>
+												{statusTranslations[project.project_status] || project.project_status}
+											</Badge>
+										</div>
+									</div>
+								))}
+							</div>
+						</CardContent>
+					</Card>
+				)}
+
+				{/* Upcoming Projects */}
+				<Card>
+					<CardHeader>
+						<h3 className="text-lg font-semibold text-gray-900">
+							Nadchodzące terminy ({upcomingProjects.length})
+						</h3>
+					</CardHeader>
+					<CardContent>
+						{upcomingProjects.length > 0 ? (
+							<div className="space-y-3">
+								{upcomingProjects.map(project => {
+									const daysUntilDeadline = Math.ceil((parseISO(project.finish_date) - new Date()) / (1000 * 60 * 60 * 24));
+									
+									return (
+										<div key={project.project_id} className="flex items-center justify-between p-3 bg-gray-50 rounded-lg">
+											<div className="flex-1">
+												<Link 
+													href={`/projects/${project.project_id}`}
+													className="font-medium text-gray-900 hover:text-blue-600"
+												>
+													{project.project_name}
+												</Link>
+												<div className="text-sm text-gray-600 mt-1">
+													{project.customer && `${project.customer} • `}
+													{project.address}
+												</div>
+											</div>
+											<div className="text-right">
+												<div className="text-sm font-medium text-gray-900">
+													{formatDate(project.finish_date)}
+												</div>
+												<div className="text-xs text-gray-500">
+													za {daysUntilDeadline} dni
+												</div>
+												<Badge className={statusColors[project.project_status] || statusColors.registered}>
+													{statusTranslations[project.project_status] || project.project_status}
+												</Badge>
+											</div>
+										</div>
+									);
+								})}
+							</div>
+						) : (
+							<p className="text-gray-500 text-center py-8">
+								Brak nadchodzących projektów w następnych 4 tygodniach
+							</p>
+						)}
+					</CardContent>
+				</Card>
+			</div>
+		);
+	};
+
+	if (loading) {
+		return <LoadingState />;
+	}
+
+	return (
+		<PageContainer>
+			<PageHeader 
+				title="Kalendarz projektów" 
+				subtitle={`${projects.length} aktywnych projektów z terminami`}
+			>
+				<div className="flex space-x-2">
+					<Button
+						variant={viewMode === 'month' ? 'primary' : 'outline'}
+						onClick={() => setViewMode('month')}
+					>
+						Kalendarz
+					</Button>
+					<Button
+						variant={viewMode === 'upcoming' ? 'primary' : 'outline'}
+						onClick={() => setViewMode('upcoming')}
+					>
+						Lista terminów
+					</Button>
+				</div>
+			</PageHeader>
+
+			{viewMode === 'month' ? renderCalendarGrid() : renderUpcomingView()}
+		</PageContainer>
+	);
+}

src/app/contracts/[id]/page.js

@@ -10,6 +10,8 @@ import PageContainer from "@/components/ui/PageContainer";
 import PageHeader from "@/components/ui/PageHeader";
 import { LoadingState } from "@/components/ui/States";
 import { formatDate } from "@/lib/utils";
+import FileUploadModal from "@/components/FileUploadModal";
+import FileAttachmentsList from "@/components/FileAttachmentsList";
 
 export default function ContractDetailsPage() {
 	const params = useParams();
@@ -17,6 +19,8 @@ export default function ContractDetailsPage() {
 	const [contract, setContract] = useState(null);
 	const [projects, setProjects] = useState([]);
 	const [loading, setLoading] = useState(true);
+	const [showUploadModal, setShowUploadModal] = useState(false);
+	const [attachments, setAttachments] = useState([]);
 
 	useEffect(() => {
 		async function fetchContractDetails() {
@@ -52,6 +56,14 @@ export default function ContractDetailsPage() {
 			fetchContractDetails();
 		}
 	}, [contractId]);
+	const handleFileUploaded = (newFile) => {
+		setAttachments(prev => [newFile, ...prev]);
+	};
+
+	const handleFilesChange = (files) => {
+		setAttachments(files);
+	};
+
 	if (loading) {
 		return (
 			<PageContainer>
@@ -245,6 +257,44 @@ export default function ContractDetailsPage() {
 				</div>
 			</div>
 
+			{/* Contract Documents */}
+			<Card className="mb-8">
+				<CardHeader>
+					<div className="flex justify-between items-center">
+						<h2 className="text-xl font-semibold text-gray-900">
+							Contract Documents ({attachments.length})
+						</h2>
+						<Button
+							variant="primary"
+							size="sm"
+							onClick={() => setShowUploadModal(true)}
+						>
+							<svg
+								className="w-4 h-4 mr-2"
+								fill="none"
+								stroke="currentColor"
+								viewBox="0 0 24 24"
+							>
+								<path
+									strokeLinecap="round"
+									strokeLinejoin="round"
+									strokeWidth={2}
+									d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"
+								/>
+							</svg>
+							Upload Document
+						</Button>
+					</div>
+				</CardHeader>
+				<CardContent>
+					<FileAttachmentsList
+						entityType="contract"
+						entityId={contractId}
+						onFilesChange={handleFilesChange}
+					/>
+				</CardContent>
+			</Card>
+
 			{/* Associated Projects */}
 			<Card>
 				<CardHeader>
@@ -386,6 +436,15 @@ export default function ContractDetailsPage() {
 					)}
 				</CardContent>
 			</Card>
+
+			{/* File Upload Modal */}
+			<FileUploadModal
+				isOpen={showUploadModal}
+				onClose={() => setShowUploadModal(false)}
+				entityType="contract"
+				entityId={contractId}
+				onFileUploaded={handleFileUploaded}
+			/>
 		</PageContainer>
 	);
 }

src/app/contracts/page.js

@@ -11,8 +11,10 @@ import SearchBar from "@/components/ui/SearchBar";
 import FilterBar from "@/components/ui/FilterBar";
 import { LoadingState } from "@/components/ui/States";
 import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ContractsMainPage() {
+	const { t } = useTranslation();
 	const [contracts, setContracts] = useState([]);
 	const [loading, setLoading] = useState(true);
 	const [searchTerm, setSearchTerm] = useState("");
@@ -133,13 +135,13 @@ export default function ContractsMainPage() {
 	const getStatusBadge = (status) => {
 		switch (status) {
 			case "active":
-				return <Badge variant="success">Aktywna</Badge>;
+				return <Badge variant="success">{t('contracts.active')}</Badge>;
 			case "completed":
-				return <Badge variant="secondary">Zakończona</Badge>;
+				return <Badge variant="secondary">{t('common.completed')}</Badge>;
 			case "ongoing":
-				return <Badge variant="primary">W trakcie</Badge>;
+				return <Badge variant="primary">{t('contracts.withoutEndDate')}</Badge>;
 			default:
-				return <Badge>Nieznany</Badge>;
+				return <Badge>{t('common.unknown')}</Badge>;
 		}
 	};
 
@@ -170,17 +172,17 @@ export default function ContractsMainPage() {
 		return (
 			<PageContainer>
 				<PageHeader
-					title="Umowy"
-					description="Zarządzaj swoimi umowami i kontraktami"
+					title={t('contracts.title')}
+					description={t('contracts.subtitle')}
 				>
 					<Link href="/contracts/new">
 						<Button variant="primary" size="lg">
 							<span className="mr-2">➕</span>
-							Nowa umowa
+							{t('contracts.newContract')}
 						</Button>
 					</Link>
 				</PageHeader>
-				<LoadingState message="Ładowanie umów..." />
+				<LoadingState message={t('navigation.loading')} />
 			</PageContainer>
 		);
 	}
@@ -225,13 +227,13 @@ export default function ContractsMainPage() {
 	return (
 		<PageContainer>
 			<PageHeader
-				title="Umowy"
-				description="Zarządzaj swoimi umowami i kontraktami"
+				title={t('contracts.title')}
+				description={t('contracts.subtitle')}
 			>
 				<Link href="/contracts/new">
 					<Button variant="primary" size="lg">
 						<span className="mr-2">➕</span>
-						Nowa umowa
+						{t('contracts.newContract')}
 					</Button>
 				</Link>{" "}
 			</PageHeader>

src/app/layout.js

@@ -2,6 +2,7 @@ import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
 import Navigation from "@/components/ui/Navigation";
 import { AuthProvider } from "@/components/auth/AuthProvider";
+import { TranslationProvider } from "@/lib/i18n";
 
 const geistSans = Geist({
 	variable: "--font-geist-sans",
@@ -14,20 +15,22 @@ const geistMono = Geist_Mono({
 });
 
 export const metadata = {
-	title: "Project Management Panel",
-	description: "Professional project management dashboard",
+	title: "Panel Zarządzania Projektami",
+	description: "Profesjonalny panel zarządzania projektami",
 };
 
 export default function RootLayout({ children }) {
 	return (
-		<html lang="en">
+		<html lang="pl">
 			<body
 				className={`${geistSans.variable} ${geistMono.variable} antialiased`}
 			>
+				<TranslationProvider initialLanguage="pl">
 					<AuthProvider>
 						<Navigation />
 						<main>{children}</main>
 					</AuthProvider>
+				</TranslationProvider>
 			</body>
 		</html>
 	);

src/app/project-tasks/page.js

@@ -6,8 +6,8 @@ export default function ProjectTasksPage() {
 	return (
 		<PageContainer>
 			<PageHeader
-				title="Project Tasks"
-				description="View and manage tasks across all projects in a structured list format"
+				title="Zadania projektów"
+				description="---"
 			/>
 			<ProjectTasksList />
 		</PageContainer>

src/app/projects/[id]/page.js

@@ -1,33 +1,88 @@
-import {
-	getProjectWithContract,
-	getNotesForProject,
-} from "@/lib/queries/projects";
+"use client";
+
+import { useState, useEffect } from "react";
+import { useParams } from "next/navigation";
+import { useSession } from "next-auth/react";
 import NoteForm from "@/components/NoteForm";
 import ProjectTasksSection from "@/components/ProjectTasksSection";
+import FieldWithHistory from "@/components/FieldWithHistory";
 import { Card, CardHeader, CardContent } from "@/components/ui/Card";
 import Button from "@/components/ui/Button";
 import Badge from "@/components/ui/Badge";
 import Link from "next/link";
 import { differenceInCalendarDays, parseISO } from "date-fns";
-import { formatDate } from "@/lib/utils";
+import { formatDate, formatCoordinates } from "@/lib/utils";
 import PageContainer from "@/components/ui/PageContainer";
 import PageHeader from "@/components/ui/PageHeader";
 import ProjectStatusDropdown from "@/components/ProjectStatusDropdown";
 import ClientProjectMap from "@/components/ui/ClientProjectMap";
 
-export default async function ProjectViewPage({ params }) {
-	const { id } = await params;
-	const project = await getProjectWithContract(id);
-	const notes = await getNotesForProject(id);
+export default function ProjectViewPage() {
+	const params = useParams();
+	const { data: session } = useSession();
+	const [project, setProject] = useState(null);
+	const [notes, setNotes] = useState([]);
+	const [loading, setLoading] = useState(true);
+
+	// Helper function to check if user can delete a note
+	const canDeleteNote = (note) => {
+		if (!session?.user) return false;
+		
+		// Admins can delete any note
+		if (session.user.role === 'admin') return true;
+		
+		// Users can delete their own notes
+		return note.created_by === session.user.id;
+	};
+
+	useEffect(() => {
+		const fetchData = async () => {
+			if (!params.id) return;
+
+			try {
+				// Fetch project data
+				const projectRes = await fetch(`/api/projects/${params.id}`);
+				if (!projectRes.ok) {
+					throw new Error('Project not found');
+				}
+				const projectData = await projectRes.json();
+
+				// Fetch notes data
+				const notesRes = await fetch(`/api/notes?project_id=${params.id}`);
+				const notesData = notesRes.ok ? await notesRes.json() : [];
+
+				setProject(projectData);
+				setNotes(notesData);
+			} catch (error) {
+				console.error('Error fetching data:', error);
+				setProject(null);
+				setNotes([]);
+			} finally {
+				setLoading(false);
+			}
+		};
+
+		fetchData();
+	}, [params.id]);
+
+	if (loading) {
+		return (
+			<PageContainer>
+				<div className="flex items-center justify-center py-12">
+					<div className="text-gray-500">Loading...</div>
+				</div>
+			</PageContainer>
+		);
+	}
 
 	if (!project) {
 		return (
 			<PageContainer>
 				<Card>
 					<CardContent className="text-center py-8">
-						<p className="text-red-600 text-lg">Project not found.</p>
+						<p className="text-red-600 text-lg">Projekt nie został znaleziony.</p>
 						<Link href="/projects" className="mt-4 inline-block">
-							<Button variant="primary">Back to Projects</Button>
+							<Button variant="primary">Powrót do projektów</Button>
 						</Link>
 					</CardContent>
 				</Card>
@@ -55,10 +110,10 @@ export default async function ProjectViewPage({ params }) {
 						{daysRemaining !== null && (
 							<Badge variant={getDeadlineVariant(daysRemaining)} size="md">
 								{daysRemaining === 0
-									? "Due Today"
+									? "Termin dzisiaj"
 									: daysRemaining > 0
-									? `${daysRemaining} days left`
-									: `${Math.abs(daysRemaining)} days overdue`}
+									? `${daysRemaining} dni pozostało`
+									: `${Math.abs(daysRemaining)} dni po terminie`}
 							</Badge>
 						)}
 						<Link href="/projects">
@@ -76,10 +131,10 @@ export default async function ProjectViewPage({ params }) {
 										d="M15 19l-7-7 7-7"
 									/>
 								</svg>
-								Back to Projects
+								Powrót do projektów
 							</Button>
 						</Link>
-						<Link href={`/projects/${id}/edit`}>
+						<Link href={`/projects/${params.id}/edit`}>
 							<Button variant="primary">
 								<svg
 									className="w-4 h-4 mr-2"
@@ -94,7 +149,7 @@ export default async function ProjectViewPage({ params }) {
 										d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"
 									/>
 								</svg>
-								Edit Project
+								Edytuj projekt
 							</Button>
 						</Link>
 					</div>
@@ -108,7 +163,7 @@ export default async function ProjectViewPage({ params }) {
 							{" "}
 							<div className="flex items-center justify-between">
 								<h2 className="text-xl font-semibold text-gray-900">
-									Project Information
+									Informacje o projekcie
 								</h2>
 								<Badge
 									variant={
@@ -123,12 +178,12 @@ export default async function ProjectViewPage({ params }) {
 									size="sm"
 								>
 									{project.project_type === "design"
-										? "Design (P)"
+										? "Projektowanie (P)"
 										: project.project_type === "construction"
-										? "Construction (R)"
+										? "Realizacja (R)"
 										: project.project_type === "design+construction"
-										? "Design + Construction (P+R)"
-										: "Unknown"}
+										? "Projektowanie + Realizacja (P+R)"
+										: "Nieznany"}
 								</Badge>
 							</div>
 						</CardHeader>
@@ -136,7 +191,7 @@ export default async function ProjectViewPage({ params }) {
 							<div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Location
+										Lokalizacja
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.city || "N/A"}
@@ -144,7 +199,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Address
+										Adres
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.address || "N/A"}
@@ -152,7 +207,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Plot
+										Działka
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.plot || "N/A"}
@@ -160,7 +215,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										District
+										Dzielnica
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.district || "N/A"}
@@ -168,22 +223,19 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Unit
+										Jednostka
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.unit || "N/A"}
 									</p>
 								</div>{" "}
-								<div>
-									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Deadline
-									</span>
-									<p className="text-gray-900 font-medium">
-										{project.finish_date
-											? formatDate(project.finish_date)
-											: "N/A"}
-									</p>
-								</div>
+								<FieldWithHistory
+									tableName="projects"
+									recordId={project.project_id}
+									fieldName="finish_date"
+									currentValue={project.finish_date}
+									label="Termin zakończenia"
+								/>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
 										WP
@@ -194,7 +246,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Investment Number
+										Numer inwestycji
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.investment_number || "N/A"}
@@ -205,7 +257,7 @@ export default async function ProjectViewPage({ params }) {
 							{project.contact && (
 								<div className="border-t pt-4">
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Contact
+										Kontakt
 									</span>
 									<p className="text-gray-900 font-medium">{project.contact}</p>
 								</div>
@@ -214,10 +266,10 @@ export default async function ProjectViewPage({ params }) {
 							{project.coordinates && (
 								<div className="border-t pt-4">
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Coordinates
+										Współrzędne
 									</span>
 									<p className="text-gray-900 font-medium font-mono text-sm">
-										{project.coordinates}
+										{formatCoordinates(project.coordinates)}
 									</p>
 								</div>
 							)}
@@ -237,14 +289,14 @@ export default async function ProjectViewPage({ params }) {
 					<Card>
 						<CardHeader>
 							<h2 className="text-xl font-semibold text-gray-900">
-								Contract Details
+								Szczegóły umowy
 							</h2>
 						</CardHeader>
 						<CardContent className="space-y-4">
 							<div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Contract Number
+										Numer umowy
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.contract_number || "N/A"}
@@ -252,7 +304,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Contract Name
+										Nazwa umowy
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.contract_name || "N/A"}
@@ -260,7 +312,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Customer
+										Klient
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.customer || "N/A"}
@@ -268,7 +320,7 @@ export default async function ProjectViewPage({ params }) {
 								</div>
 								<div>
 									<span className="text-sm font-medium text-gray-500 block mb-1">
-										Investor
+										Inwestor
 									</span>
 									<p className="text-gray-900 font-medium">
 										{project.investor || "N/A"}
@@ -284,21 +336,21 @@ export default async function ProjectViewPage({ params }) {
 					<Card>
 						<CardHeader>
 							<h2 className="text-lg font-semibold text-gray-900">
-								Project Status
+								Status projektu
 							</h2>
 						</CardHeader>
 						<CardContent className="space-y-4">
 							{" "}
 							<div>
 								<span className="text-sm font-medium text-gray-500 block mb-2">
-									Current Status
+									Aktualny status
 								</span>
 								<ProjectStatusDropdown project={project} size="md" />
 							</div>
 							{daysRemaining !== null && (
 								<div className="border-t pt-4">
 									<span className="text-sm font-medium text-gray-500 block mb-2">
-										Timeline
+										Harmonogram
 									</span>
 									<div className="text-center">
 										<Badge
@@ -306,10 +358,10 @@ export default async function ProjectViewPage({ params }) {
 											size="lg"
 										>
 											{daysRemaining === 0
-												? "Due Today"
+												? "Termin dzisiaj"
 												: daysRemaining > 0
-												? `${daysRemaining} days remaining`
-												: `${Math.abs(daysRemaining)} days overdue`}
+												? `${daysRemaining} dni pozostało`
+												: `${Math.abs(daysRemaining)} dni po terminie`}
 										</Badge>
 									</div>
 								</div>
@@ -321,11 +373,11 @@ export default async function ProjectViewPage({ params }) {
 					<Card>
 						<CardHeader>
 							<h2 className="text-lg font-semibold text-gray-900">
-								Quick Actions
+								Szybkie akcje
 							</h2>
 						</CardHeader>
 						<CardContent className="space-y-3">
-							<Link href={`/projects/${id}/edit`} className="block">
+							<Link href={`/projects/${params.id}/edit`} className="block">
 								<Button
 									variant="outline"
 									size="sm"
@@ -344,7 +396,7 @@ export default async function ProjectViewPage({ params }) {
 											d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"
 										/>
 									</svg>
-									Edit Project
+									Edytuj projekt
 								</Button>
 							</Link>{" "}
 							<Link href="/projects" className="block">
@@ -366,7 +418,7 @@ export default async function ProjectViewPage({ params }) {
 											d="M15 19l-7-7 7-7"
 										/>
 									</svg>
-									Back to Projects
+									Powrót do projektów
 								</Button>
 							</Link>
 							<Link href="/projects/map" className="block">
@@ -388,7 +440,7 @@ export default async function ProjectViewPage({ params }) {
 											d="M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-1.447-.894L15 4m0 13V4m0 0L9 7"
 										/>
 									</svg>
-									View All on Map
+									Zobacz wszystkie na mapie
 								</Button>
 							</Link>
 						</CardContent>
@@ -404,7 +456,7 @@ export default async function ProjectViewPage({ params }) {
 							{" "}
 							<div className="flex items-center justify-between">
 								<h2 className="text-xl font-semibold text-gray-900">
-									Project Location
+									Lokalizacja projektu
 								</h2>
 								{project.coordinates && (
 									<Link
@@ -428,7 +480,7 @@ export default async function ProjectViewPage({ params }) {
 													d="M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-1.447-.894L15 4m0 13V4m0 0L9 7"
 												/>
 											</svg>
-											View on Full Map
+											Zobacz na pełnej mapie
 										</Button>
 									</Link>
 								)}
@@ -449,16 +501,16 @@ export default async function ProjectViewPage({ params }) {
 			)}
 			{/* Project Tasks Section */}
 			<div className="mb-8">
-				<ProjectTasksSection projectId={id} />
+				<ProjectTasksSection projectId={params.id} />
 			</div>
 			{/* Notes Section */}
 			<Card>
 				<CardHeader>
-					<h2 className="text-xl font-semibold text-gray-900">Notes</h2>
+					<h2 className="text-xl font-semibold text-gray-900">Notatki</h2>
 				</CardHeader>
 				<CardContent>
 					<div className="mb-6">
-						<NoteForm projectId={id} />
+						<NoteForm projectId={params.id} />
 					</div>
 					{notes.length === 0 ? (
 						<div className="text-center py-12">
@@ -475,10 +527,10 @@ export default async function ProjectViewPage({ params }) {
 								</svg>
 							</div>
 							<h3 className="text-lg font-medium text-gray-900 mb-2">
-								No notes yet
+								Brak notatek
 							</h3>
 							<p className="text-gray-500">
-								Add your first note using the form above.
+								Dodaj swoją pierwszą notatkę używając formularza powyżej.
 							</p>
 						</div>
 					) : (
@@ -486,7 +538,7 @@ export default async function ProjectViewPage({ params }) {
 							{notes.map((n) => (
 								<div
 									key={n.note_id}
-									className="border border-gray-200 p-4 rounded-lg bg-gray-50 hover:bg-gray-100 transition-colors"
+									className="border border-gray-200 p-4 rounded-lg bg-gray-50 hover:bg-gray-100 transition-colors group"
 								>
 									<div className="flex items-center justify-between mb-2">
 										<div className="flex items-center gap-2">
@@ -499,6 +551,44 @@ export default async function ProjectViewPage({ params }) {
 												</span>
 											)}
 										</div>
+										{canDeleteNote(n) && (
+											<button
+												onClick={async () => {
+													if (confirm('Czy na pewno chcesz usunąć tę notatkę?')) {
+														try {
+															const res = await fetch(`/api/notes/${n.note_id}`, {
+																method: 'DELETE',
+															});
+															if (res.ok) {
+																// Remove the note from local state instead of full page reload
+																setNotes(prevNotes => prevNotes.filter(note => note.note_id !== n.note_id));
+															} else {
+																alert('Błąd podczas usuwania notatki');
+															}
+														} catch (error) {
+															console.error('Error deleting note:', error);
+															alert('Błąd podczas usuwania notatki');
+														}
+													}
+												}}
+												className="opacity-0 group-hover:opacity-100 transition-opacity p-1 text-gray-400 hover:text-red-500 hover:bg-red-50 rounded"
+												title="Usuń notatkę"
+											>
+												<svg
+													className="w-4 h-4"
+													fill="none"
+													stroke="currentColor"
+													viewBox="0 0 24 24"
+												>
+													<path
+														strokeLinecap="round"
+														strokeLinejoin="round"
+														strokeWidth={2}
+														d="M6 18L18 6M6 6l12 12"
+													/>
+												</svg>
+											</button>
+										)}
 									</div>
 									<p className="text-gray-900 leading-relaxed">{n.note}</p>
 								</div>

src/app/projects/map/page.js

@@ -29,6 +29,7 @@ function ProjectsMapPageContent() {
 		in_progress_design: true,
 		in_progress_construction: true,
 		fulfilled: true,
+		cancelled: true,
 	});
 	const [activeBaseLayer, setActiveBaseLayer] = useState("OpenStreetMap");
 	const [activeOverlays, setActiveOverlays] = useState([]);
@@ -57,6 +58,11 @@ function ProjectsMapPageContent() {
 			label: "Completed",
 			shortLabel: "Zakończony",
 		},
+		cancelled: {
+			color: "#EF4444",
+			label: "Cancelled",
+			shortLabel: "Wycofany",
+		},
 	};
 
 	// Toggle all status filters

src/app/projects/new/page.js

@@ -1,3 +1,6 @@
+"use client";
+
+import { useTranslation } from "@/lib/i18n";
 import ProjectForm from "@/components/ProjectForm";
 import PageContainer from "@/components/ui/PageContainer";
 import PageHeader from "@/components/ui/PageHeader";
@@ -5,11 +8,13 @@ import Button from "@/components/ui/Button";
 import Link from "next/link";
 
 export default function NewProjectPage() {
+	const { t } = useTranslation();
+
 	return (
 		<PageContainer>
 			<PageHeader
-				title="Create New Project"
-				description="Add a new project to your portfolio"
+				title={t("projects.newProject")}
+				// description={t("projects.noProjectsMessage")}
 				action={
 					<Link href="/projects">
 						<Button variant="outline" size="sm">
@@ -26,7 +31,7 @@ export default function NewProjectPage() {
 									d="M15 19l-7-7 7-7"
 								/>
 							</svg>
-							Back to Projects
+							{t("common.back")}
 						</Button>
 					</Link>
 				}

src/app/projects/page.js

@@ -11,41 +11,78 @@ import PageHeader from "@/components/ui/PageHeader";
 import SearchBar from "@/components/ui/SearchBar";
 import { LoadingState } from "@/components/ui/States";
 import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectListPage() {
+	const { t } = useTranslation();
 	const [projects, setProjects] = useState([]);
 	const [searchTerm, setSearchTerm] = useState("");
 	const [filteredProjects, setFilteredProjects] = useState([]);
+	const [filters, setFilters] = useState({
+		status: 'all',
+		type: 'all', 
+		customer: 'all'
+	});
+
+	const [customers, setCustomers] = useState([]);
+	
 	useEffect(() => {
 		fetch("/api/projects")
 			.then((res) => res.json())
 			.then((data) => {
 				setProjects(data);
 				setFilteredProjects(data);
+				
+				// Extract unique customers for filter
+				const uniqueCustomers = [...new Set(data.map(p => p.customer).filter(Boolean))];
+				setCustomers(uniqueCustomers);
 			});
 	}, []);
 
-	// Filter projects based on search term
+	// Filter projects based on search term and filters
 	useEffect(() => {
-		if (!searchTerm.trim()) {
-			setFilteredProjects(projects);
+		let filtered = projects;
+
+		// Apply status filter
+		if (filters.status !== 'all') {
+			if (filters.status === 'not_finished') {
+				filtered = filtered.filter(project => project.project_status !== 'fulfilled');
 			} else {
-			const filtered = projects.filter((project) => {
+				filtered = filtered.filter(project => project.project_status === filters.status);
+			}
+		}
+
+		// Apply type filter
+		if (filters.type !== 'all') {
+			filtered = filtered.filter(project => project.project_type === filters.type);
+		}
+
+		// Apply customer filter
+		if (filters.customer !== 'all') {
+			filtered = filtered.filter(project => project.customer === filters.customer);
+		}
+
+		// Apply search term
+		if (searchTerm.trim()) {
 			const searchLower = searchTerm.toLowerCase();
+			filtered = filtered.filter((project) => {
 				return (
 					project.project_name?.toLowerCase().includes(searchLower) ||
 					project.wp?.toLowerCase().includes(searchLower) ||
 					project.plot?.toLowerCase().includes(searchLower) ||
 					project.investment_number?.toLowerCase().includes(searchLower) ||
-					project.address?.toLowerCase().includes(searchLower)
+					project.address?.toLowerCase().includes(searchLower) ||
+					project.customer?.toLowerCase().includes(searchLower) ||
+					project.investor?.toLowerCase().includes(searchLower)
 				);
 			});
-			setFilteredProjects(filtered);
 		}
-	}, [searchTerm, projects]);
+
+		setFilteredProjects(filtered);
+	}, [searchTerm, projects, filters]);
 
 	async function handleDelete(id) {
-		const confirmed = confirm("Are you sure you want to delete this project?");
+		const confirmed = confirm(t('projects.deleteConfirm'));
 		if (!confirmed) return;
 
 		const res = await fetch(`/api/projects/${id}`, {
@@ -59,9 +96,45 @@ export default function ProjectListPage() {
 	const handleSearchChange = (e) => {
 		setSearchTerm(e.target.value);
 	};
+
+	const handleFilterChange = (filterType, value) => {
+		setFilters(prev => ({
+			...prev,
+			[filterType]: value
+		}));
+	};
+
+	const clearAllFilters = () => {
+		setFilters({
+			status: 'all',
+			type: 'all',
+			customer: 'all'
+		});
+		setSearchTerm('');
+	};
+
+	const getStatusLabel = (status) => {
+		switch(status) {
+			case "registered": return t('projectStatus.registered');
+			case "in_progress_design": return t('projectStatus.in_progress_design');
+			case "in_progress_construction": return t('projectStatus.in_progress_construction');
+			case "fulfilled": return t('projectStatus.fulfilled');
+			case "cancelled": return t('projectStatus.cancelled');
+			default: return "-";
+		}
+	};
+
+	const getTypeLabel = (type) => {
+		switch(type) {
+			case "design": return t('projectType.design');
+			case "construction": return t('projectType.construction');
+			case "design+construction": return t('projectType.design+construction');
+			default: return "-";
+		}
+	};
 	return (
 		<PageContainer>
-			<PageHeader title="Projects" description="Manage and track your projects">
+			<PageHeader title={t('projects.title')} description={t('projects.subtitle')}>
 				<div className="flex gap-2">
 					<Link href="/projects/map">
 						<Button variant="outline" size="lg">
@@ -78,7 +151,7 @@ export default function ProjectListPage() {
 									d="M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-.553-.894L15 4m0 13V4m0 0L9 7"
 								/>
 							</svg>
-							Map View
+							{t('projects.mapView') || 'Widok mapy'}
 						</Button>
 					</Link>
 					<Link href="/projects/new">
@@ -96,7 +169,7 @@ export default function ProjectListPage() {
 									d="M12 4v16m8-8H4"
 								/>
 							</svg>
-							Add Project
+							{t('projects.newProject')}
 						</Button>
 					</Link>
 				</div>
@@ -105,10 +178,78 @@ export default function ProjectListPage() {
 			<SearchBar
 				searchTerm={searchTerm}
 				onSearchChange={handleSearchChange}
-				placeholder="Search by project name, WP, plot, or investment number..."
+				placeholder={t('projects.searchPlaceholder')}
 				resultsCount={filteredProjects.length}
-				resultsText="projects"
+				resultsText={t('projects.projects') || 'projektów'}
 			/>
+
+			{/* Filters */}
+			<Card className="mb-6">
+				<CardContent className="p-4">
+					<div className="flex flex-wrap gap-4 items-center">
+						<div className="flex items-center gap-2">
+							<label className="text-sm font-medium text-gray-700">{t('common.status') || 'Status'}:</label>
+							<select
+								value={filters.status}
+								onChange={(e) => handleFilterChange('status', e.target.value)}
+								className="px-3 py-1 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-2 focus:ring-blue-500"
+							>
+								<option value="all">{t('common.all')}</option>
+								<option value="not_finished">{t('projects.notFinished') || 'Nie zakończone'}</option>
+								<option value="registered">{t('projectStatus.registered')}</option>
+								<option value="in_progress_design">{t('projectStatus.in_progress_design')}</option>
+								<option value="in_progress_construction">{t('projectStatus.in_progress_construction')}</option>
+								<option value="fulfilled">{t('projectStatus.fulfilled')}</option>
+							</select>
+						</div>
+
+						<div className="flex items-center gap-2">
+							<label className="text-sm font-medium text-gray-700">{t('common.type') || 'Typ'}:</label>
+							<select
+								value={filters.type}
+								onChange={(e) => handleFilterChange('type', e.target.value)}
+								className="px-3 py-1 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-2 focus:ring-blue-500"
+							>
+								<option value="all">{t('common.all')}</option>
+								<option value="design">{t('projectType.design')}</option>
+								<option value="construction">{t('projectType.construction')}</option>
+								<option value="design+construction">{t('projectType.design+construction')}</option>
+							</select>
+						</div>
+
+						<div className="flex items-center gap-2">
+							<label className="text-sm font-medium text-gray-700">{t('contracts.customer') || 'Klient'}:</label>
+							<select
+								value={filters.customer}
+								onChange={(e) => handleFilterChange('customer', e.target.value)}
+								className="px-3 py-1 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-2 focus:ring-blue-500"
+							>
+								<option value="all">{t('common.all')}</option>
+								{customers.map((customer) => (
+									<option key={customer} value={customer}>
+										{customer}
+									</option>
+								))}
+							</select>
+						</div>
+
+						{(filters.status !== 'all' || filters.type !== 'all' || filters.customer !== 'all' || searchTerm) && (
+							<Button 
+								variant="outline" 
+								size="sm" 
+								onClick={clearAllFilters}
+								className="text-xs"
+							>
+								{t('common.clearAllFilters') || 'Wyczyść wszystkie filtry'}
+							</Button>
+						)}
+
+						<div className="text-sm text-gray-500 ml-auto">
+							{t('projects.showingResults', { shown: filteredProjects.length, total: projects.length }) || `Wyświetlono ${filteredProjects.length} z ${projects.length} projektów`}
+						</div>
+					</div>
+				</CardContent>
+			</Card>
 			{filteredProjects.length === 0 && searchTerm ? (
 				<Card>
 					<CardContent className="text-center py-12">
@@ -126,14 +267,13 @@ export default function ProjectListPage() {
 							</svg>
 						</div>
 						<h3 className="text-lg font-medium text-gray-900 mb-2">
-							No projects found
+							{t('common.noResults')}
 						</h3>
 						<p className="text-gray-500 mb-6">
-							No projects match your search criteria. Try adjusting your search
-							terms.
+							{t('projects.noMatchingResults') || 'Brak projektów pasujących do kryteriów wyszukiwania. Spróbuj zmienić wyszukiwane frazy.'}
 						</p>
 						<Button variant="outline" onClick={() => setSearchTerm("")}>
-							Clear Search
+							{t('common.clearSearch') || 'Wyczyść wyszukiwanie'}
 						</Button>
 					</CardContent>
 				</Card>
@@ -154,13 +294,13 @@ export default function ProjectListPage() {
 							</svg>
 						</div>
 						<h3 className="text-lg font-medium text-gray-900 mb-2">
-							No projects yet
+							{t('projects.noProjects')}
 						</h3>
 						<p className="text-gray-500 mb-6">
-							Get started by creating your first project
+							{t('projects.noProjectsMessage')}
 						</p>
 						<Link href="/projects/new">
-							<Button variant="primary">Create First Project</Button>
+							<Button variant="primary">{t('projects.createFirstProject') || 'Utwórz pierwszy projekt'}</Button>
 						</Link>
 					</CardContent>
 				</Card>
@@ -170,40 +310,34 @@ export default function ProjectListPage() {
 						<thead>
 							<tr className="bg-gray-100 border-b">
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-32">
-									No.
+									Nr.
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700">
-									Project Name
+									{t('projects.projectName')}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-40">
 									WP
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-20">
-									City
+									{t('projects.city')}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-40">
-									Address
+									{t('projects.address')}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-20">
-									Plot
+									{t('projects.plot')}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-24">
-									Finish
+									{t('projects.finishDate')}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-12">
-									Type
+									{t('common.type') || 'Typ'}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-24">
-									Status
-								</th>
-								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-24">
-									Created By
-								</th>
-								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-24">
-									Assigned To
+									{t('common.status') || 'Status'}
 								</th>
 								<th className="text-left px-2 py-3 font-semibold text-xs text-gray-700 w-20">
-									Actions
+									{t('common.actions') || 'Akcje'}
 								</th>
 							</tr>
 						</thead>
@@ -271,27 +405,7 @@ export default function ProjectListPage() {
 											: "-"}
 									</td>
 									<td className="px-2 py-3 text-xs text-gray-600 truncate">
-										{project.project_status === "registered"
-											? "Zarejestr."
-											: project.project_status === "in_progress_design"
-											? "W real. (P)"
-											: project.project_status === "in_progress_construction"
-											? "W real. (R)"
-											: project.project_status === "fulfilled"
-											? "Zakończony"
-											: "-"}
-									</td>
-									<td
-										className="px-2 py-3 text-xs text-gray-600 truncate"
-										title={project.created_by_name || "Unknown"}
-									>
-										{project.created_by_name || "Unknown"}
-									</td>
-									<td
-										className="px-2 py-3 text-xs text-gray-600 truncate"
-										title={project.assigned_to_name || "Unassigned"}
-									>
-										{project.assigned_to_name || "Unassigned"}
+										{getStatusLabel(project.project_status)}
 									</td>
 									<td className="px-2 py-3">
 										<Link href={`/projects/${project.project_id}`}>
@@ -300,7 +414,7 @@ export default function ProjectListPage() {
 												size="sm"
 												className="text-xs px-2 py-1"
 											>
-												View
+												{t('common.view') || 'Wyświetl'}
 											</Button>
 										</Link>
 									</td>

src/app/tasks/page.js

@@ -14,8 +14,10 @@ import PageHeader from "@/components/ui/PageHeader";
 import SearchBar from "@/components/ui/SearchBar";
 import FilterBar from "@/components/ui/FilterBar";
 import { LoadingState } from "@/components/ui/States";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectTasksPage() {
+	const { t } = useTranslation();
 	const [allTasks, setAllTasks] = useState([]);
 	const [filteredTasks, setFilteredTasks] = useState([]);
 	const [searchTerm, setSearchTerm] = useState("");
@@ -148,25 +150,25 @@ export default function ProjectTasksPage() {
 
 	const filterOptions = [
 		{
-			label: "Status",
+			label: t('tasks.status'),
 			value: statusFilter,
 			onChange: (e) => setStatusFilter(e.target.value),
 			options: [
-				{ value: "all", label: "All" },
-				{ value: "pending", label: "Pending" },
-				{ value: "in_progress", label: "In Progress" },
-				{ value: "completed", label: "Completed" },
+				{ value: "all", label: t('common.all') },
+				{ value: "pending", label: t('taskStatus.pending') },
+				{ value: "in_progress", label: t('taskStatus.in_progress') },
+				{ value: "completed", label: t('taskStatus.completed') },
 			],
 		},
 		{
-			label: "Priority",
+			label: t('tasks.priority'),
 			value: priorityFilter,
 			onChange: (e) => setPriorityFilter(e.target.value),
 			options: [
-				{ value: "all", label: "All" },
-				{ value: "high", label: "High" },
-				{ value: "normal", label: "Normal" },
-				{ value: "low", label: "Low" },
+				{ value: "all", label: t('common.all') },
+				{ value: "high", label: t('tasks.high') },
+				{ value: "normal", label: t('tasks.medium') },
+				{ value: "low", label: t('tasks.low') },
 			],
 		},
 	];
@@ -174,8 +176,8 @@ export default function ProjectTasksPage() {
 	return (
 		<PageContainer>
 			<PageHeader
-				title="Project Tasks"
-				description="Monitor and manage tasks across all projects"
+				title={t('tasks.title')}
+				description={t('tasks.subtitle')}
 			/>
 			<SearchBar
 				searchTerm={searchTerm}
@@ -206,7 +208,7 @@ export default function ProjectTasksPage() {
 								</svg>
 							</div>
 							<div className="ml-4">
-								<p className="text-sm font-medium text-gray-600">Total Tasks</p>
+								<p className="text-sm font-medium text-gray-600">{t('dashboard.totalTasks')}</p>
 								<p className="text-2xl font-bold text-gray-900">
 									{statusCounts.all}
 								</p>
@@ -233,7 +235,7 @@ export default function ProjectTasksPage() {
 								</svg>
 							</div>
 							<div className="ml-4">
-								<p className="text-sm font-medium text-gray-600">Pending</p>
+								<p className="text-sm font-medium text-gray-600">{t('taskStatus.pending')}</p>
 								<p className="text-2xl font-bold text-gray-900">
 									{statusCounts.pending}
 								</p>
@@ -260,7 +262,7 @@ export default function ProjectTasksPage() {
 								</svg>
 							</div>
 							<div className="ml-4">
-								<p className="text-sm font-medium text-gray-600">In Progress</p>
+								<p className="text-sm font-medium text-gray-600">{t('taskStatus.in_progress')}</p>
 								<p className="text-2xl font-bold text-gray-900">
 									{statusCounts.in_progress}
 								</p>
@@ -287,7 +289,7 @@ export default function ProjectTasksPage() {
 								</svg>
 							</div>
 							<div className="ml-4">
-								<p className="text-sm font-medium text-gray-600">Completed</p>
+								<p className="text-sm font-medium text-gray-600">{t('taskStatus.completed')}</p>
 								<p className="text-2xl font-bold text-gray-900">
 									{statusCounts.completed}
 								</p>

src/app/tasks/templates/page.js

@@ -89,20 +89,12 @@ export default function TaskTemplatesPage() {
 										{template.description}
 									</p>
 								)}{" "}
-								<div className="flex items-center justify-between">
-									<span className="text-xs text-gray-500">
-										Template ID: {template.task_id}
-									</span>
-									<div className="flex space-x-2">
+								<div className="flex items-center justify-end">
 									<Link href={`/tasks/templates/${template.task_id}/edit`}>
 										<Button variant="outline" size="sm">
 											Edit
 										</Button>
 									</Link>
-										<Button variant="secondary" size="sm">
-											Duplicate
-										</Button>
-									</div>
 								</div>
 							</CardContent>
 						</Card>

src/components/FieldWithHistory.js

@@ -0,0 +1,126 @@
+"use client";
+
+import { useState, useEffect } from "react";
+import Tooltip from "@/components/ui/Tooltip";
+import { formatDate } from "@/lib/utils";
+
+export default function FieldWithHistory({
+	tableName,
+	recordId,
+	fieldName,
+	currentValue,
+	displayValue = null,
+	label = null,
+	className = "",
+}) {
+	const [hasHistory, setHasHistory] = useState(false);
+	const [history, setHistory] = useState([]);
+	const [loading, setLoading] = useState(true);
+
+	useEffect(() => {
+		const fetchHistory = async () => {
+			try {
+				const response = await fetch(
+					`/api/field-history?table_name=${tableName}&record_id=${recordId}&field_name=${fieldName}`
+				);
+				if (response.ok) {
+					const historyData = await response.json();
+					setHistory(historyData);
+					setHasHistory(historyData.length > 0);
+				}
+			} catch (error) {
+				console.error("Failed to fetch field history:", error);
+			} finally {
+				setLoading(false);
+			}
+		};
+
+		if (tableName && recordId && fieldName) {
+			fetchHistory();
+		} else {
+			setLoading(false);
+		}
+	}, [tableName, recordId, fieldName]);
+
+	// Format value for display
+	const getDisplayValue = (value) => {
+		if (displayValue !== null) return displayValue;
+		if (value && fieldName.includes("date")) {
+			try {
+				return formatDate(value);
+			} catch {
+				return value;
+			}
+		}
+		return value || "N/A";
+	};
+
+	// Create tooltip content
+	const tooltipContent = history.length > 0 && (
+		<div className="space-y-2">
+			<div className="font-medium text-white mb-2">Change History:</div>
+			{history.map((change, index) => (
+				<div key={change.id} className="text-xs border-b border-gray-600 pb-1 last:border-b-0">
+					<div className="flex justify-between items-start gap-2">
+						<div className="flex-1">
+							<div className="text-white font-medium">
+								Changed to: {getDisplayValue(change.new_value)}
+							</div>
+							{change.old_value && (
+								<div className="text-gray-400 text-xs">
+									From: {getDisplayValue(change.old_value)}
+								</div>
+							)}
+							{change.changed_by_name && (
+								<div className="text-gray-300">
+									by {change.changed_by_name}
+								</div>
+							)}
+						</div>
+						<div className="text-gray-400 text-right text-xs">
+							{formatDate(change.changed_at)}
+						</div>
+					</div>
+					{change.change_reason && (
+						<div className="text-gray-400 text-xs mt-1">
+							Reason: {change.change_reason}
+						</div>
+					)}
+				</div>
+			))}
+		</div>
+	);
+
+	if (loading) {
+		return (
+			<div className={className}>
+				{label && <span className="text-sm font-medium text-gray-500 block mb-1">{label}</span>}
+				<p className="text-gray-900 font-medium">{getDisplayValue(currentValue)}</p>
+			</div>
+		);
+	}
+
+	return (
+		<div className={className}>
+			{label && <span className="text-sm font-medium text-gray-500 block mb-1">{label}</span>}
+			<div className="flex items-center gap-2">
+				<p className="text-gray-900 font-medium">{getDisplayValue(currentValue)}</p>
+				{hasHistory && (
+					<Tooltip content={tooltipContent}>
+						<svg
+							className="w-4 h-4 text-blue-500 hover:text-blue-700 cursor-help"
+							fill="currentColor"
+							viewBox="0 0 20 20"
+						>
+							<path
+								fillRule="evenodd"
+								d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z"
+								clipRule="evenodd"
+							/>
+						</svg>
+					</Tooltip>
+				)}
+			</div>
+		</div>
+	);
+}

src/components/FileAttachmentsList.js

@@ -0,0 +1,177 @@
+"use client";
+
+import { useState, useEffect } from "react";
+import Button from "@/components/ui/Button";
+import { formatDate } from "@/lib/utils";
+
+export default function FileAttachmentsList({ entityType, entityId, onFilesChange }) {
+	const [files, setFiles] = useState([]);
+	const [loading, setLoading] = useState(true);
+
+	const fetchFiles = async () => {
+		try {
+			const response = await fetch(`/api/files?entityType=${entityType}&entityId=${entityId}`);
+			if (response.ok) {
+				const filesData = await response.json();
+				setFiles(filesData);
+				if (onFilesChange) {
+					onFilesChange(filesData);
+				}
+			}
+		} catch (error) {
+			console.error("Error fetching files:", error);
+		} finally {
+			setLoading(false);
+		}
+	};
+
+	useEffect(() => {
+		fetchFiles();
+	}, [entityType, entityId]);
+
+	const handleDelete = async (fileId) => {
+		if (!confirm("Are you sure you want to delete this file?")) {
+			return;
+		}
+
+		try {
+			const response = await fetch(`/api/files/${fileId}`, {
+				method: "DELETE",
+			});
+
+			if (response.ok) {
+				setFiles(files.filter(file => file.file_id !== fileId));
+				if (onFilesChange) {
+					onFilesChange(files.filter(file => file.file_id !== fileId));
+				}
+			} else {
+				alert("Failed to delete file");
+			}
+		} catch (error) {
+			console.error("Error deleting file:", error);
+			alert("Failed to delete file");
+		}
+	};
+
+	const formatFileSize = (bytes) => {
+		if (bytes === 0) return '0 Bytes';
+		const k = 1024;
+		const sizes = ['Bytes', 'KB', 'MB', 'GB'];
+		const i = Math.floor(Math.log(bytes) / Math.log(k));
+		return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
+	};
+
+	const getFileIcon = (mimeType) => {
+		if (mimeType.startsWith('image/')) {
+			return (
+				<svg className="w-5 h-5 text-blue-500" fill="currentColor" viewBox="0 0 20 20">
+					<path fillRule="evenodd" d="M4 3a2 2 0 00-2 2v10a2 2 0 002 2h12a2 2 0 002-2V5a2 2 0 00-2-2H4zm12 12H4l4-8 3 6 2-4 3 6z" clipRule="evenodd" />
+				</svg>
+			);
+		} else if (mimeType === 'application/pdf') {
+			return (
+				<svg className="w-5 h-5 text-red-500" fill="currentColor" viewBox="0 0 20 20">
+					<path fillRule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4z" clipRule="evenodd" />
+				</svg>
+			);
+		} else if (mimeType.includes('word') || mimeType.includes('document')) {
+			return (
+				<svg className="w-5 h-5 text-blue-600" fill="currentColor" viewBox="0 0 20 20">
+					<path fillRule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4z" clipRule="evenodd" />
+				</svg>
+			);
+		} else if (mimeType.includes('excel') || mimeType.includes('sheet')) {
+			return (
+				<svg className="w-5 h-5 text-green-600" fill="currentColor" viewBox="0 0 20 20">
+					<path fillRule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4z" clipRule="evenodd" />
+				</svg>
+			);
+		} else {
+			return (
+				<svg className="w-5 h-5 text-gray-500" fill="currentColor" viewBox="0 0 20 20">
+					<path fillRule="evenodd" d="M4 4a2 2 0 012-2h4.586A2 2 0 0112 2.586L15.414 6A2 2 0 0116 7.414V16a2 2 0 01-2 2H6a2 2 0 01-2-2V4z" clipRule="evenodd" />
+				</svg>
+			);
+		}
+	};
+
+	if (loading) {
+		return (
+			<div className="flex items-center justify-center py-8">
+				<svg className="animate-spin h-6 w-6 text-gray-400" fill="none" viewBox="0 0 24 24">
+					<circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
+					<path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
+				</svg>
+				<span className="ml-2 text-gray-500">Loading files...</span>
+			</div>
+		);
+	}
+
+	if (files.length === 0) {
+		return (
+			<div className="text-center py-8">
+				<svg className="w-12 h-12 text-gray-300 mx-auto mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" />
+				</svg>
+				<p className="text-gray-500">No documents uploaded yet</p>
+			</div>
+		);
+	}
+
+	return (
+		<div className="space-y-3">
+			{files.map((file) => (
+				<div
+					key={file.file_id}
+					className="flex items-center justify-between p-3 border border-gray-200 rounded-lg hover:bg-gray-50"
+				>
+					<div className="flex items-center flex-1 min-w-0">
+						<div className="flex-shrink-0 mr-3">
+							{getFileIcon(file.mime_type)}
+						</div>
+						<div className="min-w-0 flex-1">
+							<div className="text-sm font-medium text-gray-900 truncate">
+								{file.original_filename}
+							</div>
+							<div className="text-xs text-gray-500 flex items-center gap-2">
+								<span>{formatFileSize(file.file_size)}</span>
+								<span>•</span>
+								<span>{formatDate(file.upload_date, { includeTime: true })}</span>
+							</div>
+							{file.description && (
+								<div className="text-xs text-gray-600 mt-1 truncate">
+									{file.description}
+								</div>
+							)}
+						</div>
+					</div>
+					<div className="flex items-center gap-2 ml-3">
+						<a
+							href={file.file_path}
+							target="_blank"
+							rel="noopener noreferrer"
+							className="text-blue-600 hover:text-blue-800"
+						>
+							<Button variant="outline" size="sm">
+								<svg className="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+									<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" />
+								</svg>
+								Download
+							</Button>
+						</a>
+						<Button
+							variant="outline"
+							size="sm"
+							onClick={() => handleDelete(file.file_id)}
+							className="text-red-600 hover:text-red-800 hover:border-red-300"
+						>
+							<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+								<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
+							</svg>
+						</Button>
+					</div>
+				</div>
+			))}
+		</div>
+	);
+}

src/components/FileUploadModal.js

@@ -0,0 +1,186 @@
+"use client";
+
+import { useState, useRef } from "react";
+import Button from "@/components/ui/Button";
+
+export default function FileUploadModal({ 
+	isOpen, 
+	onClose, 
+	entityType, 
+	entityId, 
+	onFileUploaded 
+}) {
+	const [dragActive, setDragActive] = useState(false);
+	const [uploading, setUploading] = useState(false);
+	const [description, setDescription] = useState("");
+	const fileInputRef = useRef(null);
+
+	const handleDrag = (e) => {
+		e.preventDefault();
+		e.stopPropagation();
+		if (e.type === "dragenter" || e.type === "dragover") {
+			setDragActive(true);
+		} else if (e.type === "dragleave") {
+			setDragActive(false);
+		}
+	};
+
+	const handleDrop = (e) => {
+		e.preventDefault();
+		e.stopPropagation();
+		setDragActive(false);
+		
+		if (e.dataTransfer.files && e.dataTransfer.files[0]) {
+			handleFiles(e.dataTransfer.files);
+		}
+	};
+
+	const handleChange = (e) => {
+		e.preventDefault();
+		if (e.target.files && e.target.files[0]) {
+			handleFiles(e.target.files);
+		}
+	};
+
+	const handleFiles = async (files) => {
+		const file = files[0];
+		if (!file) return;
+
+		setUploading(true);
+		
+		try {
+			const formData = new FormData();
+			formData.append("file", file);
+			formData.append("entityType", entityType);
+			formData.append("entityId", entityId.toString());
+			formData.append("description", description);
+
+			const response = await fetch("/api/files", {
+				method: "POST",
+				body: formData,
+			});
+
+			if (response.ok) {
+				const uploadedFile = await response.json();
+				onFileUploaded(uploadedFile);
+				setDescription("");
+				onClose();
+			} else {
+				const error = await response.json();
+				alert(error.error || "Failed to upload file");
+			}
+		} catch (error) {
+			console.error("Upload error:", error);
+			alert("Failed to upload file");
+		} finally {
+			setUploading(false);
+		}
+	};
+
+	const onButtonClick = () => {
+		fileInputRef.current?.click();
+	};
+
+	if (!isOpen) return null;
+
+	return (
+		<div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
+			<div className="bg-white rounded-lg p-6 w-full max-w-md mx-4">
+				<div className="flex items-center justify-between mb-6">
+					<h3 className="text-lg font-semibold text-gray-900">
+						Upload Document
+					</h3>
+					<button
+						onClick={onClose}
+						className="text-gray-400 hover:text-gray-600"
+						disabled={uploading}
+					>
+						<svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+							<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+						</svg>
+					</button>
+				</div>
+
+				<div className="space-y-4">
+					{/* Description Input */}
+					<div>
+						<label className="block text-sm font-medium text-gray-700 mb-2">
+							Description (optional)
+						</label>
+						<input
+							type="text"
+							value={description}
+							onChange={(e) => setDescription(e.target.value)}
+							placeholder="Brief description of the document..."
+							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
+							disabled={uploading}
+						/>
+					</div>
+
+					{/* File Drop Zone */}
+					<div
+						className={`relative border-2 border-dashed rounded-lg p-8 text-center transition-colors ${
+							dragActive 
+								? "border-blue-400 bg-blue-50" 
+								: "border-gray-300 hover:border-gray-400"
+						} ${uploading ? "opacity-50 pointer-events-none" : ""}`}
+						onDragEnter={handleDrag}
+						onDragLeave={handleDrag}
+						onDragOver={handleDrag}
+						onDrop={handleDrop}
+					>
+						<input
+							ref={fileInputRef}
+							type="file"
+							className="hidden"
+							onChange={handleChange}
+							accept=".pdf,.doc,.docx,.xls,.xlsx,.jpg,.jpeg,.png,.gif,.txt"
+							disabled={uploading}
+						/>
+
+						{uploading ? (
+							<div className="flex flex-col items-center">
+								<svg className="animate-spin h-8 w-8 text-blue-600 mb-2" fill="none" viewBox="0 0 24 24">
+									<circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
+									<path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
+								</svg>
+								<span className="text-sm text-gray-600">Uploading...</span>
+							</div>
+						) : (
+							<div className="flex flex-col items-center">
+								<svg className="w-12 h-12 text-gray-400 mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+									<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12" />
+								</svg>
+								<span className="text-sm font-medium text-gray-900 mb-2">
+									Drop files here or click to browse
+								</span>
+								<span className="text-xs text-gray-500 mb-4">
+									PDF, DOC, XLS, Images up to 10MB
+								</span>
+								<Button
+									type="button"
+									variant="outline"
+									onClick={onButtonClick}
+									disabled={uploading}
+								>
+									Choose File
+								</Button>
+							</div>
+						)}
+					</div>
+				</div>
+
+				<div className="flex justify-end gap-3 mt-6">
+					<Button
+						type="button"
+						variant="outline"
+						onClick={onClose}
+						disabled={uploading}
+					>
+						Cancel
+					</Button>
+				</div>
+			</div>
+		</div>
+	);
+}

src/components/FinishDateWithHistory.js

@@ -0,0 +1,114 @@
+"use client";
+
+import { useState, useEffect } from "react";
+import Tooltip from "@/components/ui/Tooltip";
+import { formatDate } from "@/lib/utils";
+
+export default function FinishDateWithHistory({ projectId, finishDate }) {
+	const [hasUpdates, setHasUpdates] = useState(false);
+	const [updates, setUpdates] = useState([]);
+	const [loading, setLoading] = useState(true);
+
+	useEffect(() => {
+		const fetchUpdates = async () => {
+			try {
+				const res = await fetch(`/api/projects/${projectId}/finish-date-updates`);
+				if (res.ok) {
+					const data = await res.json();
+					setUpdates(data);
+					setHasUpdates(data.length > 0);
+				}
+			} catch (error) {
+				console.error("Failed to fetch finish date updates:", error);
+			} finally {
+				setLoading(false);
+			}
+		};
+
+		if (projectId) {
+			fetchUpdates();
+		}
+	}, [projectId]);
+
+	const formatDateTime = (dateString) => {
+		const date = new Date(dateString);
+		return date.toLocaleDateString("pl-PL", {
+			year: "numeric",
+			month: "short",
+			day: "numeric",
+			hour: "2-digit",
+			minute: "2-digit",
+		});
+	};
+
+	const tooltipContent = (
+		<div className="space-y-2">
+			<div className="font-medium text-xs text-gray-300 mb-2">
+				Historia zmian terminu:
+			</div>
+			{updates.map((update, index) => (
+				<div key={update.id} className="text-xs">
+					<div className="flex justify-between items-start gap-2">
+						<div>
+							<div className="font-medium">
+								{update.new_finish_date 
+									? formatDate(update.new_finish_date)
+									: "Usunięto termin"}
+							</div>
+							{update.old_finish_date && (
+								<div className="text-gray-400 text-xs">
+									poprzednio: {formatDate(update.old_finish_date)}
+								</div>
+							)}
+						</div>
+					</div>
+					<div className="text-gray-400 text-xs mt-1">
+						{update.updated_by_name && (
+							<span>przez {update.updated_by_name} • </span>
+						)}
+						<span>{formatDateTime(update.updated_at)}</span>
+					</div>
+					{update.reason && (
+						<div className="text-gray-300 text-xs mt-1 italic">
+							"{update.reason}"
+						</div>
+					)}
+					{index < updates.length - 1 && (
+						<div className="border-b border-gray-600 my-2"></div>
+					)}
+				</div>
+			))}
+		</div>
+	);
+
+	if (loading) {
+		return (
+			<p className="text-gray-900 font-medium">
+				{finishDate ? formatDate(finishDate) : "N/A"}
+			</p>
+		);
+	}
+
+	return (
+		<div className="flex items-center gap-1">
+			<p className="text-gray-900 font-medium">
+				{finishDate ? formatDate(finishDate) : "N/A"}
+			</p>
+			{hasUpdates && (
+				<Tooltip content={tooltipContent} position="top">
+					<svg
+						className="w-4 h-4 text-blue-500 cursor-help hover:text-blue-600 transition-colors"
+						fill="currentColor"
+						viewBox="0 0 20 20"
+					>
+						<path
+							fillRule="evenodd"
+							d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z"
+							clipRule="evenodd"
+						/>
+					</svg>
+				</Tooltip>
+			)}
+		</div>
+	);
+}

src/components/NoteForm.js

@@ -1,8 +1,10 @@
 "use client";
 
 import React, { useState } from "react";
+import { useTranslation } from "@/lib/i18n";
 
 export default function NoteForm({ projectId }) {
+	const { t } = useTranslation();
 	const [note, setNote] = useState("");
 	const [status, setStatus] = useState(null);
 
@@ -17,10 +19,10 @@ export default function NoteForm({ projectId }) {
 
 		if (res.ok) {
 			setNote("");
-			setStatus("Note added");
+			setStatus(t("common.addNoteSuccess"));
 			window.location.reload();
 		} else {
-			setStatus("Failed to save note");
+			setStatus(t("common.addNoteError"));
 		}
 	}
 
@@ -29,7 +31,7 @@ export default function NoteForm({ projectId }) {
 			<textarea
 				value={note}
 				onChange={(e) => setNote(e.target.value)}
-				placeholder="Add a new note..."
+				placeholder={t("common.addNotePlaceholder")}
 				className="border p-2 w-full"
 				rows={3}
 				required
@@ -38,7 +40,7 @@ export default function NoteForm({ projectId }) {
 				type="submit"
 				className="bg-blue-600 text-white px-4 py-2 rounded"
 			>
-				Add Note
+				{t("common.addNote")}
 			</button>
 			{status && <p className="text-sm text-gray-600">{status}</p>}
 		</form>

src/components/ProjectForm.js

@@ -6,8 +6,10 @@ import { Card, CardHeader, CardContent } from "@/components/ui/Card";
 import Button from "@/components/ui/Button";
 import { Input } from "@/components/ui/Input";
 import { formatDateForInput } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectForm({ initialData = null }) {
+	const { t } = useTranslation();
 	const [form, setForm] = useState({
 		contract_id: "",
 		project_name: "",
@@ -101,11 +103,11 @@ export default function ProjectForm({ initialData = null }) {
 					router.push("/projects");
 				}
 			} else {
-				alert("Failed to save project.");
+				alert(t('projects.saveError'));
 			}
 		} catch (error) {
 			console.error("Error saving project:", error);
-			alert("Failed to save project.");
+			alert(t('projects.saveError'));
 		} finally {
 			setLoading(false);
 		}
@@ -114,7 +116,7 @@ export default function ProjectForm({ initialData = null }) {
 		<Card>
 			<CardHeader>
 				<h2 className="text-xl font-semibold text-gray-900">
-					{isEdit ? "Edit Project Details" : "Project Details"}
+					{isEdit ? t('projects.editProjectDetails') : t('projects.projectDetails')}
 				</h2>
 			</CardHeader>
 			<CardContent>
@@ -123,7 +125,7 @@ export default function ProjectForm({ initialData = null }) {
 					<div className="grid grid-cols-1 md:grid-cols-3 gap-6">
 						<div>
 							<label className="block text-sm font-medium text-gray-700 mb-2">
-								Contract <span className="text-red-500">*</span>
+								{t('projects.contract')} <span className="text-red-500">*</span>
 							</label>
 							<select
 								name="contract_id"
@@ -132,7 +134,7 @@ export default function ProjectForm({ initialData = null }) {
 								className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
 								required
 							>
-								<option value="">Select Contract</option>
+								<option value="">{t('projects.selectContract')}</option>
 								{contracts.map((contract) => (
 									<option
 										key={contract.contract_id}
@@ -146,7 +148,7 @@ export default function ProjectForm({ initialData = null }) {
 
 						<div>
 							<label className="block text-sm font-medium text-gray-700 mb-2">
-								Project Type <span className="text-red-500">*</span>
+								{t('projects.type')} <span className="text-red-500">*</span>
 							</label>
 							<select
 								name="project_type"
@@ -155,17 +157,17 @@ export default function ProjectForm({ initialData = null }) {
 								className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
 								required
 							>
-								<option value="design">Design (Projektowanie)</option>
-								<option value="construction">Construction (Realizacja)</option>
+								<option value="design">{t('projectType.design')}</option>
+								<option value="construction">{t('projectType.construction')}</option>
 								<option value="design+construction">
-									Design + Construction (Projektowanie + Realizacja)
+									{t('projectType.design+construction')}
 								</option>
 							</select>
 						</div>
 
 						<div>
 							<label className="block text-sm font-medium text-gray-700 mb-2">
-								Assigned To
+								{t('projects.assignedTo')}
 							</label>
 							<select
 								name="assigned_to"
@@ -173,10 +175,10 @@ export default function ProjectForm({ initialData = null }) {
 								onChange={handleChange}
 								className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
 							>
-								<option value="">Unassigned</option>
+								<option value="">{t('projects.unassigned')}</option>
 								{users.map((user) => (
 									<option key={user.id} value={user.id}>
-										{user.name} ({user.email})
+										{user.name} ({user.username})
 									</option>
 								))}
 							</select>
@@ -186,92 +188,92 @@ export default function ProjectForm({ initialData = null }) {
 					{/* Basic Information Section */}
 					<div className="border-t pt-6">
 						<h3 className="text-lg font-medium text-gray-900 mb-4">
-							Basic Information
+							{t('projects.basicInformation')}
 						</h3>
 						<div className="grid grid-cols-1 md:grid-cols-2 gap-6">
 							<div className="md:col-span-2">
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Project Name <span className="text-red-500">*</span>
+									{t('projects.projectName')} <span className="text-red-500">*</span>
 								</label>
 								<Input
 									type="text"
 									name="project_name"
 									value={form.project_name || ""}
 									onChange={handleChange}
-									placeholder="Enter project name"
+									placeholder={t('projects.enterProjectName')}
 									required
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									City
+									{t('projects.city')}
 								</label>
 								<Input
 									type="text"
 									name="city"
 									value={form.city || ""}
 									onChange={handleChange}
-									placeholder="Enter city"
+									placeholder={t('projects.enterCity')}
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Address
+									{t('projects.address')}
 								</label>
 								<Input
 									type="text"
 									name="address"
 									value={form.address || ""}
 									onChange={handleChange}
-									placeholder="Enter address"
+									placeholder={t('projects.enterAddress')}
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Plot
+									{t('projects.plot')}
 								</label>
 								<Input
 									type="text"
 									name="plot"
 									value={form.plot || ""}
 									onChange={handleChange}
-									placeholder="Enter plot number"
+									placeholder={t('projects.enterPlotNumber')}
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									District
+									{t('projects.district')}
 								</label>
 								<Input
 									type="text"
 									name="district"
 									value={form.district || ""}
 									onChange={handleChange}
-									placeholder="Enter district"
+									placeholder={t('projects.enterDistrict')}
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Unit
+									{t('projects.unit')}
 								</label>
 								<Input
 									type="text"
 									name="unit"
 									value={form.unit || ""}
 									onChange={handleChange}
-									placeholder="Enter unit"
+									placeholder={t('projects.enterUnit')}
 								/>
 							</div>
 
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Finish Date
-								</label>{" "}
+									{t('projects.finishDate')}
+								</label>
 								<Input
 									type="date"
 									name="finish_date"
@@ -285,19 +287,19 @@ export default function ProjectForm({ initialData = null }) {
 					{/* Additional Information Section */}
 					<div className="border-t pt-6">
 						<h3 className="text-lg font-medium text-gray-900 mb-4">
-							Additional Information
+							{t('projects.additionalInfo')}
 						</h3>
 						<div className="grid grid-cols-1 md:grid-cols-2 gap-6">
 							<div>
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Investment Number
+									{t('projects.investmentNumber')}
 								</label>
 								<Input
 									type="text"
 									name="investment_number"
 									value={form.investment_number || ""}
 									onChange={handleChange}
-									placeholder="Enter investment number"
+									placeholder={t('projects.placeholders.investmentNumber')}
 								/>
 							</div>
 
@@ -310,39 +312,39 @@ export default function ProjectForm({ initialData = null }) {
 									name="wp"
 									value={form.wp || ""}
 									onChange={handleChange}
-									placeholder="Enter WP"
+									placeholder={t('projects.placeholders.wp')}
 								/>
 							</div>
 
 							<div className="md:col-span-2">
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Contact Information
+									{t('projects.contact')}
 								</label>
 								<Input
 									type="text"
 									name="contact"
 									value={form.contact || ""}
 									onChange={handleChange}
-									placeholder="Enter contact details"
+									placeholder={t('projects.placeholders.contact')}
 								/>
 							</div>
 
 							<div className="md:col-span-2">
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Coordinates
+									{t('projects.coordinates')}
 								</label>
 								<Input
 									type="text"
 									name="coordinates"
 									value={form.coordinates || ""}
 									onChange={handleChange}
-									placeholder="e.g., 49.622958,20.629562"
+									placeholder={t('projects.placeholders.coordinates')}
 								/>
 							</div>
 
 							<div className="md:col-span-2">
 								<label className="block text-sm font-medium text-gray-700 mb-2">
-									Notes
+									{t('projects.notes')}
 								</label>
 								<textarea
 									name="notes"
@@ -350,7 +352,7 @@ export default function ProjectForm({ initialData = null }) {
 									onChange={handleChange}
 									rows={4}
 									className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
-									placeholder="Enter any additional notes"
+									placeholder={t('projects.placeholders.notes')}
 								/>
 							</div>
 						</div>
@@ -364,7 +366,7 @@ export default function ProjectForm({ initialData = null }) {
 							onClick={() => router.back()}
 							disabled={loading}
 						>
-							Cancel
+							{t('common.cancel')}
 						</Button>
 						<Button type="submit" variant="primary" disabled={loading}>
 							{loading ? (
@@ -389,7 +391,7 @@ export default function ProjectForm({ initialData = null }) {
 											d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
 										></path>
 									</svg>
-									{isEdit ? "Updating..." : "Creating..."}
+									{isEdit ? t('projects.updating') : t('projects.creating')}
 								</>
 							) : (
 								<>
@@ -408,7 +410,7 @@ export default function ProjectForm({ initialData = null }) {
 													d="M5 13l4 4L19 7"
 												/>
 											</svg>
-											Update Project
+											{t('projects.updateProject')}
 										</>
 									) : (
 										<>
@@ -425,7 +427,7 @@ export default function ProjectForm({ initialData = null }) {
 													d="M12 4v16m8-8H4"
 												/>
 											</svg>
-											Create Project
+											{t('projects.createProject')}
 										</>
 									)}
 								</>

src/components/ProjectStatusDropdown.js

@@ -3,12 +3,14 @@
 import { useState, useEffect, useRef } from "react";
 import { createPortal } from "react-dom";
 import Badge from "@/components/ui/Badge";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectStatusDropdown({
 	project,
 	size = "md",
 	showDropdown = true,
 }) {
+	const { t } = useTranslation();
 	const [status, setStatus] = useState(project.project_status);
 	const [loading, setLoading] = useState(false);
 	const [isOpen, setIsOpen] = useState(false);
@@ -21,21 +23,25 @@ export default function ProjectStatusDropdown({
 
 	const statusConfig = {
 		registered: {
-			label: "Registered",
+			label: t("projectStatus.registered"),
 			variant: "secondary",
 		},
 		in_progress_design: {
-			label: "In Progress (Design)",
+			label: t("projectStatus.in_progress_design"),
 			variant: "primary",
 		},
 		in_progress_construction: {
-			label: "In Progress (Construction)",
+			label: t("projectStatus.in_progress_construction"),
 			variant: "primary",
 		},
 		fulfilled: {
-			label: "Completed",
+			label: t("projectStatus.fulfilled"),
 			variant: "success",
 		},
+		cancelled: {
+			label: t("projectStatus.cancelled"),
+			variant: "danger",
+		},
 	};
 	const handleChange = async (newStatus) => {
 		if (newStatus === status) {
@@ -48,11 +54,19 @@ export default function ProjectStatusDropdown({
 		setIsOpen(false);
 
 		try {
-			await fetch(`/api/projects/${project.project_id}`, {
+			const updateData = { ...project, project_status: newStatus };
+			
+			const response = await fetch(`/api/projects/${project.project_id}`, {
 				method: "PUT",
 				headers: { "Content-Type": "application/json" },
-				body: JSON.stringify({ ...project, project_status: newStatus }),
+				body: JSON.stringify(updateData),
 			});
+			
+			if (!response.ok) {
+				const errorData = await response.json();
+				console.error('Update failed:', errorData);
+			}
+			
 			window.location.reload();
 		} catch (error) {
 			console.error("Failed to update status:", error);
@@ -73,9 +87,6 @@ export default function ProjectStatusDropdown({
 		}
 	};
 	const handleOpen = () => {
-		console.log(
-			"ProjectStatusDropdown handleOpen called, setting isOpen to true"
-		);
 		setIsOpen(true);
 	};
 
@@ -111,10 +122,6 @@ export default function ProjectStatusDropdown({
 			<button
 				ref={buttonRef}
 				onClick={() => {
-					console.log(
-						"ProjectStatusDropdown button clicked, current isOpen:",
-						isOpen
-					);
 					setIsOpen(!isOpen);
 				}}
 				disabled={loading}
@@ -145,17 +152,13 @@ export default function ProjectStatusDropdown({
 					</svg>
 				</Badge>
 			</button>{" "}
-			{/* Simple dropdown for debugging */}
+			{/* Status Options Dropdown */}
 			{isOpen && (
-				<div className="absolute top-full left-0 mt-1 bg-white border-2 border-red-500 rounded-md shadow-lg z-[9999] min-w-[140px]">
-					<div className="bg-yellow-100 p-2 text-xs text-center border-b">
-						DEBUG: ProjectStatus Dropdown is visible
-					</div>
+				<div className="absolute top-full left-0 mt-1 bg-white border border-gray-200 rounded-md shadow-lg z-[9999] min-w-[140px]">
 					{Object.entries(statusConfig).map(([statusKey, config]) => (
 						<button
 							key={statusKey}
 							onClick={() => {
-								console.log("ProjectStatus Option clicked:", statusKey);
 								handleChange(statusKey);
 							}}
 							className="w-full text-left px-3 py-2 hover:bg-gray-50 transition-colors first:rounded-t-md last:rounded-b-md"
@@ -170,9 +173,8 @@ export default function ProjectStatusDropdown({
 			{/* Backdrop */}
 			{isOpen && (
 				<div
-					className="fixed inset-0 z-[9998] bg-black bg-opacity-10"
+					className="fixed inset-0 z-[9998]"
 					onClick={() => {
-						console.log("ProjectStatus Backdrop clicked");
 						setIsOpen(false);
 					}}
 				/>

src/components/ProjectStatusDropdownDebug.js

@@ -29,6 +29,10 @@ export default function ProjectStatusDropdownDebug({
 			label: "Completed",
 			variant: "success",
 		},
+		cancelled: {
+			label: "Cancelled",
+			variant: "danger",
+		},
 	};
 
 	const handleChange = async (newStatus) => {

src/components/ProjectStatusDropdownSimple.js

@@ -29,6 +29,10 @@ export default function ProjectStatusDropdownSimple({
 			label: "Completed",
 			variant: "success",
 		},
+		cancelled: {
+			label: "Cancelled",
+			variant: "danger",
+		},
 	};
 
 	const handleChange = async (newStatus) => {

src/components/ProjectTaskForm.js

@@ -3,8 +3,10 @@
 import { useState, useEffect } from "react";
 import Button from "./ui/Button";
 import Badge from "./ui/Badge";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectTaskForm({ projectId, onTaskAdded }) {
+	const { t } = useTranslation();
 	const [taskTemplates, setTaskTemplates] = useState([]);
 	const [users, setUsers] = useState([]);
 	const [taskType, setTaskType] = useState("template"); // "template" or "custom"
@@ -67,10 +69,10 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 				setAssignedTo("");
 				if (onTaskAdded) onTaskAdded();
 			} else {
-				alert("Failed to add task to project.");
+				alert(t("tasks.addTaskError"));
 			}
 		} catch (error) {
-			alert("Error adding task to project.");
+			alert(t("tasks.addTaskError"));
 		} finally {
 			setIsSubmitting(false);
 		}
@@ -79,7 +81,7 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 		<form onSubmit={handleSubmit} className="space-y-6">
 			<div>
 				<label className="block text-sm font-medium text-gray-700 mb-3">
-					Task Type
+					{t("tasks.taskType")}
 				</label>
 				<div className="flex space-x-6">
 					<label className="flex items-center">
@@ -90,7 +92,7 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 							onChange={(e) => setTaskType(e.target.value)}
 							className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300"
 						/>
-						<span className="ml-2 text-sm text-gray-900">From Template</span>
+						<span className="ml-2 text-sm text-gray-900">{t("tasks.fromTemplate")}</span>
 					</label>
 					<label className="flex items-center">
 						<input
@@ -100,7 +102,7 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 							onChange={(e) => setTaskType(e.target.value)}
 							className="h-4 w-4 text-blue-600 focus:ring-blue-500 border-gray-300"
 						/>
-						<span className="ml-2 text-sm text-gray-900">Custom Task</span>
+						<span className="ml-2 text-sm text-gray-900">{t("tasks.customTask")}</span>
 					</label>
 				</div>
 			</div>
@@ -108,7 +110,7 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 			{taskType === "template" ? (
 				<div>
 					<label className="block text-sm font-medium text-gray-700 mb-2">
-						Select Task Template
+						{t("tasks.selectTemplate")}
 					</label>{" "}
 					<select
 						value={selectedTemplate}
@@ -116,10 +118,10 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 						className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
 						required
 					>
-						<option value="">Choose a task template...</option>
+						<option value="">{t("tasks.chooseTemplate")}</option>
 						{taskTemplates.map((template) => (
 							<option key={template.task_id} value={template.task_id}>
-								{template.name} ({template.max_wait_days} days)
+								{template.name} ({template.max_wait_days} {t("tasks.days")})
 							</option>
 						))}
 					</select>
@@ -128,20 +130,20 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 				<div className="space-y-4">
 					<div>
 						<label className="block text-sm font-medium text-gray-700 mb-2">
-							Task Name
+							{t("tasks.taskName")}
 						</label>
 						<input
 							type="text"
 							value={customTaskName}
 							onChange={(e) => setCustomTaskName(e.target.value)}
 							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
-							placeholder="Enter custom task name..."
+							placeholder={t("tasks.enterTaskName")}
 							required
 						/>
 					</div>
 					<div>
 						<label className="block text-sm font-medium text-gray-700 mb-2">
-							Max Wait Days
+							{t("tasks.maxWait")}
 						</label>
 						<input
 							type="number"
@@ -154,13 +156,13 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 					</div>
 					<div>
 						<label className="block text-sm font-medium text-gray-700 mb-2">
-							Description
+							{t("tasks.description")}
 						</label>
 						<textarea
 							value={customDescription}
 							onChange={(e) => setCustomDescription(e.target.value)}
 							className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
-							placeholder="Enter task description (optional)..."
+							placeholder={t("tasks.enterDescription")}
 							rows={3}
 						/>
 					</div>
@@ -169,14 +171,14 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 
 			<div>
 				<label className="block text-sm font-medium text-gray-700 mb-2">
-					Assign To <span className="text-gray-500 text-xs">(optional)</span>
+					{t("tasks.assignedTo")} <span className="text-gray-500 text-xs">({t("common.optional")})</span>
 				</label>
 				<select
 					value={assignedTo}
 					onChange={(e) => setAssignedTo(e.target.value)}
 					className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
 				>
-					<option value="">Unassigned</option>
+					<option value="">{t("projects.unassigned")}</option>
 					{users.map((user) => (
 						<option key={user.id} value={user.id}>
 							{user.name} ({user.email})
@@ -187,17 +189,17 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 
 			<div>
 				<label className="block text-sm font-medium text-gray-700 mb-2">
-					Priority
+					{t("tasks.priority")}
 				</label>
 				<select
 					value={priority}
 					onChange={(e) => setPriority(e.target.value)}
 					className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
 				>
-					<option value="low">Low</option>
-					<option value="normal">Normal</option>
-					<option value="high">High</option>
-					<option value="urgent">Urgent</option>
+					<option value="low">{t("tasks.low")}</option>
+					<option value="normal">{t("tasks.normal")}</option>
+					<option value="high">{t("tasks.high")}</option>
+					<option value="urgent">{t("tasks.urgent")}</option>
 				</select>
 			</div>
 
@@ -211,7 +213,7 @@ export default function ProjectTaskForm({ projectId, onTaskAdded }) {
 						(taskType === "custom" && !customTaskName.trim())
 					}
 				>
-					{isSubmitting ? "Adding..." : "Add Task"}
+					{isSubmitting ? t("tasks.adding") : t("tasks.addTask")}
 				</Button>
 			</div>
 		</form>

src/components/ProjectTasksList.js

@@ -5,6 +5,7 @@ import { Card, CardHeader, CardContent } from "./ui/Card";
 import Button from "./ui/Button";
 import Badge from "./ui/Badge";
 import TaskStatusDropdownSimple from "./TaskStatusDropdownSimple";
+import TaskCommentsModal from "./TaskCommentsModal";
 import SearchBar from "./ui/SearchBar";
 import { Select } from "./ui/Input";
 import Link from "next/link";
@@ -14,12 +15,16 @@ import {
 	formatDistanceToNow,
 } from "date-fns";
 import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectTasksList() {
+	const { t } = useTranslation();
 	const [allTasks, setAllTasks] = useState([]);
 	const [loading, setLoading] = useState(true);
 	const [searchTerm, setSearchTerm] = useState("");
 	const [groupBy, setGroupBy] = useState("none");
+	const [selectedTask, setSelectedTask] = useState(null);
+	const [showCommentsModal, setShowCommentsModal] = useState(false);
 
 	useEffect(() => {
 		const fetchAllTasks = async () => {
@@ -35,7 +40,19 @@ export default function ProjectTasksList() {
 		};
 
 		fetchAllTasks();
-	}, []); // Calculate task status based on date_added and max_wait_days
+	}, []);
+
+	// Handle escape key to close modal
+	useEffect(() => {
+		const handleEscape = (e) => {
+			if (e.key === "Escape" && showCommentsModal) {
+				handleCloseComments();
+			}
+		};
+
+		document.addEventListener("keydown", handleEscape);
+		return () => document.removeEventListener("keydown", handleEscape);
+	}, [showCommentsModal]); // Calculate task status based on date_added and max_wait_days
 	const getTaskStatus = (task) => {
 		if (task.status === "completed" || task.status === "cancelled") {
 			return { type: "completed", days: 0 };
@@ -195,7 +212,7 @@ export default function ProjectTasksList() {
 
 	// Group tasks by task name when groupBy is set to "task_name"
 	const groupTasksByName = (tasks) => {
-		if (groupBy !== "task_name") return { "All Tasks": tasks };
+		if (groupBy !== "task_name") return { [t("tasks.allTasks")]: tasks };
 
 		const groups = {};
 		tasks.forEach((task) => {
@@ -223,13 +240,23 @@ export default function ProjectTasksList() {
 				const tasks = await res2.json();
 				setAllTasks(tasks);
 			} else {
-				alert("Failed to update task status");
+				alert(t("errors.generic"));
 			}
 		} catch (error) {
-			alert("Error updating task status");
+			alert(t("errors.generic"));
 		}
 	};
 
+	const handleShowComments = (task) => {
+		setSelectedTask(task);
+		setShowCommentsModal(true);
+	};
+
+	const handleCloseComments = () => {
+		setShowCommentsModal(false);
+		setSelectedTask(null);
+	};
+
 	const getPriorityVariant = (priority) => {
 		switch (priority) {
 			case "urgent":
@@ -250,13 +277,13 @@ export default function ProjectTasksList() {
 		if (days > 3) return "warning";
 		return "high";
 	};
-	const TaskRow = ({ task, showTimeLeft = false }) => (
+	const TaskRow = ({ task, showTimeLeft = false, showMaxWait = true }) => (
 		<tr className="hover:bg-gray-50 border-b border-gray-200">
 			<td className="px-4 py-3">
 				<div className="flex items-center gap-2">
 					<span className="font-medium text-gray-900">{task.task_name}</span>
 					<Badge variant={getPriorityVariant(task.priority)} size="sm">
-						{task.priority}
+						{t(`tasks.${task.priority}`)}
 					</Badge>
 				</div>
 			</td>
@@ -273,26 +300,16 @@ export default function ProjectTasksList() {
 			<td className="px-4 py-3 text-sm text-gray-600">
 				{task.address || "N/A"}
 			</td>
-			<td className="px-4 py-3 text-sm text-gray-600">
-				{task.created_by_name ? (
-					<div>
-						<div className="font-medium">{task.created_by_name}</div>
-						<div className="text-xs text-gray-500">{task.created_by_email}</div>
-					</div>
-				) : (
-					"N/A"
-				)}
-			</td>
 			<td className="px-4 py-3 text-sm text-gray-600">
 				{task.assigned_to_name ? (
 					<div>
 						<div className="font-medium">{task.assigned_to_name}</div>
-						<div className="text-xs text-gray-500">
+						{/* <div className="text-xs text-gray-500">
 							{task.assigned_to_email}
-						</div>
+						</div> */}
 					</div>
 				) : (
-					<span className="text-gray-400 italic">Unassigned</span>
+					<span className="text-gray-400 italic">{t("projects.unassigned")}</span>
 				)}
 			</td>
 			{showTimeLeft && (
@@ -307,9 +324,9 @@ export default function ProjectTasksList() {
 							>
 								{!isNaN(task.statusInfo.daysRemaining)
 									? task.statusInfo.daysRemaining > 0
-										? `${task.statusInfo.daysRemaining}d left`
-										: `${Math.abs(task.statusInfo.daysRemaining)}d overdue`
-									: "Calculating..."}
+										? `${task.statusInfo.daysRemaining}${t("tasks.daysLeft")}`
+										: `${Math.abs(task.statusInfo.daysRemaining)}${t("tasks.daysOverdue")}`
+									: t("common.loading")}
 							</Badge>
 						)}
 						{task.statusInfo &&
@@ -317,8 +334,8 @@ export default function ProjectTasksList() {
 							task.status === "in_progress" && (
 								<Badge variant="danger" size="sm">
 									{!isNaN(task.statusInfo.daysRemaining)
-										? `${Math.abs(task.statusInfo.daysRemaining)}d overdue`
-										: "Overdue"}
+										? `${Math.abs(task.statusInfo.daysRemaining)}${t("tasks.daysOverdue")}`
+										: t("tasks.overdue")}
 								</Badge>
 							)}
 					</div>
@@ -328,7 +345,7 @@ export default function ProjectTasksList() {
 				{task.status === "completed" && task.date_completed ? (
 					<div>
 						<div>
-							Completed:{" "}
+							{t("taskStatus.completed")}:{" "}
 							{(() => {
 								try {
 									const completedDate = new Date(task.date_completed);
@@ -344,7 +361,7 @@ export default function ProjectTasksList() {
 				) : task.status === "in_progress" && task.date_started ? (
 					<div>
 						<div>
-							Started:{" "}
+							{t("tasks.dateStarted")}:{" "}
 							{(() => {
 								try {
 									const startedDate = new Date(task.date_started);
@@ -368,22 +385,34 @@ export default function ProjectTasksList() {
 					})()
 				)}
 			</td>
+			{showMaxWait && (
 				<td className="px-4 py-3 text-sm text-gray-500">
-				{task.max_wait_days} days
+					{task.max_wait_days} {t("tasks.days")}
 				</td>
+			)}
 			<td className="px-4 py-3">
+				<div className="flex items-center gap-2">
 					<TaskStatusDropdownSimple
 						task={task}
 						size="sm"
 						onStatusChange={handleStatusChange}
 					/>
+					<Button
+						variant="secondary"
+						size="sm"
+						onClick={() => handleShowComments(task)}
+						title={t("tasks.comments")}
+					>
+						💬
+					</Button>
+				</div>
 			</td>
 		</tr>
 	);
-	const TaskTable = ({ tasks, showGrouped = false, showTimeLeft = false }) => {
+	const TaskTable = ({ tasks, showGrouped = false, showTimeLeft = false, showMaxWait = true }) => {
 		const filteredTasks = filterTasks(tasks);
 		const groupedTasks = groupTasksByName(filteredTasks);
-		const colSpan = showTimeLeft ? "10" : "9";
+		const colSpan = showTimeLeft && showMaxWait ? "9" : showTimeLeft || showMaxWait ? "8" : "7";
 
 		return (
 			<div className="overflow-x-auto">
@@ -391,49 +420,48 @@ export default function ProjectTasksList() {
 					<thead className="bg-gray-50">
 						<tr>
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Task Name
+								{t("tasks.taskName")}
 							</th>{" "}
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Project
+								{t("tasks.project")}
 							</th>
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								City
+								{t("projects.city")}
 							</th>
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Address
+								{t("projects.address")}
 							</th>
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Created By
-							</th>
-							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Assigned To
+								{t("tasks.assignedTo")}
 							</th>
 							{showTimeLeft && (
 								<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-									Time Left
+									{t("tasks.daysLeft")}
 								</th>
 							)}
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Date Info
+								{t("tasks.dateCreated")}
 							</th>
+							{showMaxWait && (
 								<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Max Wait
-							</th>{" "}
+									{t("tasks.maxWait")}
+								</th>
+							)}{" "}
 							<th className="px-4 py-3 text-left text-sm font-medium text-gray-700">
-								Actions
+								{t("tasks.actions")}
 							</th>
 						</tr>
 					</thead>
 					<tbody>
 						{Object.entries(groupedTasks).map(([groupName, groupTasks]) => (
 							<Fragment key={`group-fragment-${groupName}`}>
-								{showGrouped && groupName !== "All Tasks" && (
+								{showGrouped && groupName !== t("tasks.allTasks") && (
 									<tr key={`group-${groupName}`}>
 										<td
 											colSpan={colSpan}
 											className="px-4 py-2 bg-gray-100 font-medium text-gray-800 text-sm"
 										>
-											{groupName} ({groupTasks.length} tasks)
+											{groupName} ({groupTasks.length} {t("tasks.tasks")})
 										</td>
 									</tr>
 								)}
@@ -442,6 +470,7 @@ export default function ProjectTasksList() {
 										key={task.id}
 										task={task}
 										showTimeLeft={showTimeLeft}
+										showMaxWait={showMaxWait}
 									/>
 								))}
 							</Fragment>
@@ -450,7 +479,7 @@ export default function ProjectTasksList() {
 				</table>
 				{filteredTasks.length === 0 && (
 					<div className="text-center py-8 text-gray-500">
-						<p>No tasks found</p>
+						<p>{t("tasks.noTasks")}</p>
 					</div>
 				)}
 			</div>
@@ -476,7 +505,7 @@ export default function ProjectTasksList() {
 						<div className="text-2xl font-bold text-blue-600">
 							{taskGroups.pending.length}
 						</div>
-						<div className="text-sm text-gray-600">Pending</div>
+						<div className="text-sm text-gray-600">{t("taskStatus.pending")}</div>
 					</CardContent>
 				</Card>
 				<Card>
@@ -484,7 +513,7 @@ export default function ProjectTasksList() {
 						<div className="text-2xl font-bold text-purple-600">
 							{taskGroups.in_progress.length}
 						</div>
-						<div className="text-sm text-gray-600">In Progress</div>
+						<div className="text-sm text-gray-600">{t("taskStatus.in_progress")}</div>
 					</CardContent>
 				</Card>
 				<Card>
@@ -492,7 +521,7 @@ export default function ProjectTasksList() {
 						<div className="text-2xl font-bold text-green-600">
 							{taskGroups.completed.length}
 						</div>
-						<div className="text-sm text-gray-600">Completed</div>
+						<div className="text-sm text-gray-600">{t("taskStatus.completed")}</div>
 					</CardContent>
 				</Card>
 			</div>{" "}
@@ -500,26 +529,26 @@ export default function ProjectTasksList() {
 			<SearchBar
 				searchTerm={searchTerm}
 				onSearchChange={(e) => setSearchTerm(e.target.value)}
-				placeholder="Search tasks, projects, city, or address..."
+				placeholder={t("tasks.searchPlaceholder")}
 				resultsCount={
 					filterTasks(taskGroups.pending).length +
 					filterTasks(taskGroups.in_progress).length +
 					filterTasks(taskGroups.completed).length
 				}
-				resultsText="tasks"
+				resultsText={t("tasks.tasks")}
 				filters={
 					<div className="flex items-center gap-4">
 						<div className="flex items-center gap-2">
 							<label className="text-sm font-medium text-gray-700">
-								Group by:
+								{t("tasks.sortBy")}:
 							</label>
 							<Select
 								value={groupBy}
 								onChange={(e) => setGroupBy(e.target.value)}
 								className="min-w-[120px]"
 							>
-								<option value="none">None</option>
-								<option value="task_name">Task Name</option>
+								<option value="none">{t("common.none")}</option>
+								<option value="task_name">{t("tasks.taskName")}</option>
 							</Select>
 						</div>
 					</div>
@@ -531,19 +560,20 @@ export default function ProjectTasksList() {
 				<div>
 					<div className="mb-4">
 						<h2 className="text-xl font-semibold text-gray-900 flex items-center gap-2">
-							Pending Tasks
+							{t("taskStatus.pending")} {t("tasks.tasks")}
 							<Badge variant="primary" size="md">
 								{taskGroups.pending.length}
 							</Badge>
 						</h2>
 						<p className="text-sm text-gray-600 mt-1">
-							Tasks waiting to be started
+							{t("tasks.noTasksMessage")}
 						</p>
 					</div>
 					<TaskTable
 						tasks={taskGroups.pending}
 						showGrouped={groupBy === "task_name"}
 						showTimeLeft={false}
+						showMaxWait={true}
 					/>
 				</div>
 
@@ -551,19 +581,20 @@ export default function ProjectTasksList() {
 				<div>
 					<div className="mb-4">
 						<h2 className="text-xl font-semibold text-gray-900 flex items-center gap-2">
-							In Progress Tasks
+							{t("taskStatus.in_progress")} {t("tasks.tasks")}
 							<Badge variant="secondary" size="md">
 								{taskGroups.in_progress.length}
 							</Badge>
 						</h2>
 						<p className="text-sm text-gray-600 mt-1">
-							Tasks currently being worked on - showing time left for completion
+							Zadania aktualnie w trakcie realizacji - pokazujący pozostały czas do ukończenia
 						</p>
 					</div>
 					<TaskTable
 						tasks={taskGroups.in_progress}
 						showGrouped={groupBy === "task_name"}
 						showTimeLeft={true}
+						showMaxWait={false}
 					/>
 				</div>
 
@@ -571,22 +602,28 @@ export default function ProjectTasksList() {
 				<div>
 					<div className="mb-4">
 						<h2 className="text-xl font-semibold text-gray-900 flex items-center gap-2">
-							Completed Tasks
+							{t("taskStatus.completed")} {t("tasks.tasks")}
 							<Badge variant="success" size="md">
 								{taskGroups.completed.length}
 							</Badge>
 						</h2>
 						<p className="text-sm text-gray-600 mt-1">
-							Recently completed and cancelled tasks
+							Ostatnio ukończone i anulowane zadania
 						</p>
 					</div>
 					<TaskTable
 						tasks={taskGroups.completed}
 						showGrouped={groupBy === "task_name"}
 						showTimeLeft={false}
+						showMaxWait={false}
 					/>
 				</div>
-			</div>
+			</div>			{/* Comments Modal */}
+			<TaskCommentsModal
+				task={selectedTask}
+				isOpen={showCommentsModal}
+				onClose={handleCloseComments}
+			/>
 		</div>
 	);
 }

src/components/ProjectTasksSection.js

@@ -7,8 +7,10 @@ import { Card, CardHeader, CardContent } from "./ui/Card";
 import Button from "./ui/Button";
 import Badge from "./ui/Badge";
 import { formatDate } from "@/lib/utils";
+import { useTranslation } from "@/lib/i18n";
 
 export default function ProjectTasksSection({ projectId }) {
+	const { t } = useTranslation();
 	const [projectTasks, setProjectTasks] = useState([]);
 	const [loading, setLoading] = useState(true);
 	const [taskNotes, setTaskNotes] = useState({});
@@ -17,6 +19,15 @@ export default function ProjectTasksSection({ projectId }) {
 	const [showAddTaskModal, setShowAddTaskModal] = useState(false);
 	const [expandedDescriptions, setExpandedDescriptions] = useState({});
 	const [expandedNotes, setExpandedNotes] = useState({});
+	const [editingTask, setEditingTask] = useState(null);
+	const [showEditTaskModal, setShowEditTaskModal] = useState(false);
+	const [editTaskForm, setEditTaskForm] = useState({
+		priority: "",
+		date_started: "",
+		status: "",
+		assigned_to: "",
+	});
+	const [users, setUsers] = useState([]);
 	useEffect(() => {
 		const fetchProjectTasks = async () => {
 			try {
@@ -49,22 +60,38 @@ export default function ProjectTasksSection({ projectId }) {
 			}
 		};
 
+		// Fetch users for assignment dropdown
+		const fetchUsers = async () => {
+			try {
+				const res = await fetch("/api/project-tasks/users");
+				const usersData = await res.json();
+				setUsers(usersData);
+			} catch (error) {
+				console.error("Failed to fetch users:", error);
+			}
+		};
+
 		fetchProjectTasks();
+		fetchUsers();
 	}, [projectId]);
-	// Handle escape key to close modal
+	// Handle escape key to close modals
 	useEffect(() => {
 		const handleEscape = (e) => {
-			if (e.key === "Escape" && showAddTaskModal) {
+			if (e.key === "Escape") {
+				if (showEditTaskModal) {
+					handleCloseEditModal();
+				} else if (showAddTaskModal) {
 					setShowAddTaskModal(false);
 				}
+			}
 		};
 
 		document.addEventListener("keydown", handleEscape);
 		return () => document.removeEventListener("keydown", handleEscape);
-	}, [showAddTaskModal]);
+	}, [showAddTaskModal, showEditTaskModal]);
 	// Prevent body scroll when modal is open and handle map z-index
 	useEffect(() => {
-		if (showAddTaskModal) {
+		if (showAddTaskModal || showEditTaskModal) {
 			// Prevent body scroll
 			document.body.style.overflow = "hidden";
 
@@ -111,7 +138,7 @@ export default function ProjectTasksSection({ projectId }) {
 				nav.style.zIndex = "";
 			});
 		};
-	}, [showAddTaskModal]);
+	}, [showAddTaskModal, showEditTaskModal]);
 	const refetchTasks = async () => {
 		try {
 			const res = await fetch(`/api/project-tasks?project_id=${projectId}`);
@@ -155,14 +182,14 @@ export default function ProjectTasksSection({ projectId }) {
 			if (res.ok) {
 				refetchTasks(); // Refresh the list
 			} else {
-				alert("Failed to update task status");
+				alert(t("errors.generic"));
 			}
 		} catch (error) {
-			alert("Error updating task status");
+			alert(t("errors.generic"));
 		}
 	};
 	const handleDeleteTask = async (taskId) => {
-		if (!confirm("Are you sure you want to delete this task?")) return;
+		if (!confirm(t("common.deleteConfirm"))) return;
 		try {
 			const res = await fetch(`/api/project-tasks/${taskId}`, {
 				method: "DELETE",
@@ -171,10 +198,11 @@ export default function ProjectTasksSection({ projectId }) {
 			if (res.ok) {
 				refetchTasks(); // Refresh the list
 			} else {
-				alert("Failed to delete task");
+				const errorData = await res.json();
+				alert(t("errors.generic") + ": " + (errorData.error || t("errors.unknown")));
 			}
 		} catch (error) {
-			alert("Error deleting task");
+			alert(t("tasks.deleteError") + ": " + error.message);
 		}
 	};
 
@@ -201,20 +229,20 @@ export default function ProjectTasksSection({ projectId }) {
 				setTaskNotes((prev) => ({ ...prev, [taskId]: notes }));
 				setNewNote((prev) => ({ ...prev, [taskId]: "" }));
 			} else {
-				alert("Failed to add note");
+				alert(t("errors.generic"));
 			}
 		} catch (error) {
-			alert("Error adding note");
+			alert(t("errors.generic"));
 		} finally {
 			setLoadingNotes((prev) => ({ ...prev, [taskId]: false }));
 		}
 	};
 
 	const handleDeleteNote = async (noteId, taskId) => {
-		if (!confirm("Are you sure you want to delete this note?")) return;
+		if (!confirm(t("common.deleteConfirm"))) return;
 
 		try {
-			const res = await fetch(`/api/task-notes?note_id=${noteId}`, {
+			const res = await fetch(`/api/task-notes/${noteId}`, {
 				method: "DELETE",
 			});
 
@@ -224,12 +252,74 @@ export default function ProjectTasksSection({ projectId }) {
 				const notes = await notesRes.json();
 				setTaskNotes((prev) => ({ ...prev, [taskId]: notes }));
 			} else {
-				alert("Failed to delete note");
+				alert(t("errors.generic"));
 			}
 		} catch (error) {
-			alert("Error deleting note");
+			console.error("Error deleting task note:", error);
+			alert(t("errors.generic"));
 		}
 	};
+
+	const handleEditTask = (task) => {
+		setEditingTask(task);
+
+		// Format date for HTML input (YYYY-MM-DD)
+		let dateStarted = "";
+		if (task.date_started) {
+			const date = new Date(task.date_started);
+			if (!isNaN(date.getTime())) {
+				dateStarted = date.toISOString().split("T")[0];
+			}
+		}
+
+		const formData = {
+			priority: task.priority || "",
+			date_started: dateStarted,
+			status: task.status || "",
+			assigned_to: task.assigned_to || "",
+		};
+
+		setEditTaskForm(formData);
+		setShowEditTaskModal(true);
+	};
+
+	const handleUpdateTask = async () => {
+		if (!editingTask) return;
+
+		try {
+			const res = await fetch(`/api/project-tasks/${editingTask.id}`, {
+				method: "PUT",
+				headers: { "Content-Type": "application/json" },
+				body: JSON.stringify({
+					priority: editTaskForm.priority,
+					date_started: editTaskForm.date_started || null,
+					status: editTaskForm.status,
+					assigned_to: editTaskForm.assigned_to || null,
+				}),
+			});
+
+			if (res.ok) {
+				refetchTasks();
+				handleCloseEditModal();
+			} else {
+				alert(t("errors.generic"));
+			}
+		} catch (error) {
+			alert(t("errors.generic"));
+		}
+	};
+
+	const handleCloseEditModal = () => {
+		setShowEditTaskModal(false);
+		setEditingTask(null);
+		setEditTaskForm({
+			priority: "",
+			date_started: "",
+			status: "",
+			assigned_to: "",
+		});
+	};
+
 	const getPriorityVariant = (priority) => {
 		switch (priority) {
 			case "urgent":
@@ -261,10 +351,10 @@ export default function ProjectTasksSection({ projectId }) {
 	return (
 		<div className="space-y-6">
 			<div className="flex items-center justify-between">
-				<h2 className="text-xl font-semibold text-gray-900">Project Tasks</h2>
+				<h2 className="text-xl font-semibold text-gray-900">{t("tasks.title")}</h2>
 				<div className="flex items-center gap-3">
 					<Badge variant="default" className="text-sm">
-						{projectTasks.length} {projectTasks.length === 1 ? "task" : "tasks"}
+						{projectTasks.length} {projectTasks.length === 1 ? t("tasks.task") : t("tasks.tasks")}
 					</Badge>
 					<Button
 						variant="primary"
@@ -284,7 +374,7 @@ export default function ProjectTasksSection({ projectId }) {
 								d="M12 4v16m8-8H4"
 							/>
 						</svg>
-						Add Task
+						{t("tasks.newTask")}
 					</Button>
 				</div>
 			</div>{" "}
@@ -305,7 +395,7 @@ export default function ProjectTasksSection({ projectId }) {
 					>
 						<div className="flex items-center justify-between p-6 border-b">
 							<h3 className="text-lg font-semibold text-gray-900">
-								Add New Task
+								{t("tasks.newTask")}
 							</h3>
 							<button
 								onClick={() => setShowAddTaskModal(false)}
@@ -338,7 +428,7 @@ export default function ProjectTasksSection({ projectId }) {
 			{/* Current Tasks */}
 			<Card>
 				<CardHeader>
-					<h3 className="text-lg font-medium text-gray-900">Current Tasks</h3>
+					<h3 className="text-lg font-medium text-gray-900">{t("tasks.title")}</h3>
 				</CardHeader>
 				<CardContent className="p-0">
 					{loading ? (
@@ -364,10 +454,10 @@ export default function ProjectTasksSection({ projectId }) {
 								</svg>
 							</div>
 							<p className="text-gray-500 text-sm">
-								No tasks assigned to this project yet.
+								{t("tasks.noTasksMessage")}
 							</p>
 							<p className="text-gray-400 text-xs mt-1">
-								Add a task above to get started.
+								{t("tasks.addTaskMessage")}
 							</p>
 						</div>
 					) : (
@@ -376,22 +466,22 @@ export default function ProjectTasksSection({ projectId }) {
 								<thead className="bg-gray-50 border-b border-gray-200">
 									<tr>
 										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Task
+											{t("tasks.taskName")}
 										</th>
 										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Priority
+											{t("tasks.priority")}
 										</th>{" "}
 										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Max Wait
+											{t("tasks.maxWait")}
 										</th>
 										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Date Started
+											{t("tasks.dateStarted")}
 										</th>
 										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Status
+											{t("tasks.status")}
 										</th>
-										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
-											Actions
+										<th className="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider w-48">
+											{t("tasks.actions")}
 										</th>
 									</tr>
 								</thead>
@@ -437,17 +527,17 @@ export default function ProjectTasksSection({ projectId }) {
 														variant={getPriorityVariant(task.priority)}
 														size="sm"
 													>
-														{task.priority}
+														{t(`tasks.${task.priority}`)}
 													</Badge>
 												</td>
 												<td className="px-4 py-4 text-sm text-gray-600">
-													{task.max_wait_days} days
+													{task.max_wait_days} {t("tasks.days")}
 												</td>{" "}
 												<td className="px-4 py-4 text-sm text-gray-600">
 													{task.date_started
 														? formatDate(task.date_started)
-														: "Not started"}
-												</td>{" "}
+														: t("tasks.notStarted")}
+												</td>
 												<td className="px-4 py-4">
 													<TaskStatusDropdownSimple
 														task={task}
@@ -456,21 +546,70 @@ export default function ProjectTasksSection({ projectId }) {
 													/>
 												</td>
 												<td className="px-4 py-4">
-													<div className="flex items-center gap-2">
-														<button
+													<div className="flex items-center gap-1.5">
+														<Button
+															variant="ghost"
+															size="sm"
 															onClick={() => toggleNotes(task.id)}
-															className="text-xs text-blue-600 hover:text-blue-800 font-medium"
-															title={`${taskNotes[task.id]?.length || 0} notes`}
+															className="text-xs px-2 py-1 text-blue-600 hover:text-blue-800 hover:bg-blue-50 border-0"
+															title={`${taskNotes[task.id]?.length || 0} ${t("tasks.notes")}`}
 														>
-															Notes ({taskNotes[task.id]?.length || 0})
-														</button>
+															<svg
+																className="w-3 h-3 mr-1"
+																fill="none"
+																stroke="currentColor"
+																viewBox="0 0 24 24"
+															>
+																<path
+																	strokeLinecap="round"
+																	strokeLinejoin="round"
+																	strokeWidth={2}
+																	d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z"
+																/>
+															</svg>
+															{taskNotes[task.id]?.length || 0}
+														</Button>
+														<Button
+															variant="outline"
+															size="sm"
+															onClick={() => handleEditTask(task)}
+															className="text-xs px-2 py-1 min-w-[60px]"
+														>
+															<svg
+																className="w-3 h-3 mr-1"
+																fill="none"
+																stroke="currentColor"
+																viewBox="0 0 24 24"
+															>
+																<path
+																	strokeLinecap="round"
+																	strokeLinejoin="round"
+																	strokeWidth={2}
+																	d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"
+																/>
+															</svg>
+															{t("common.edit")}
+														</Button>
 														<Button
 															variant="danger"
 															size="sm"
 															onClick={() => handleDeleteTask(task.id)}
-															className="text-xs"
+															className="text-xs px-2 py-1 min-w-[60px]"
 														>
-															Delete
+															<svg
+																className="w-3 h-3 mr-1"
+																fill="none"
+																stroke="currentColor"
+																viewBox="0 0 24 24"
+															>
+																<path
+																	strokeLinecap="round"
+																	strokeLinejoin="round"
+																	strokeWidth={2}
+																	d="19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"
+																/>
+															</svg>
+															{t("common.delete")}
 														</Button>
 													</div>
 												</td>
@@ -481,7 +620,7 @@ export default function ProjectTasksSection({ projectId }) {
 													<td colSpan="6" className="px-4 py-3">
 														<div className="text-sm text-gray-700">
 															<span className="font-medium text-gray-900">
-																Description:
+																{t("tasks.description")}:
 															</span>
 															<p className="mt-1">{task.description}</p>
 														</div>
@@ -494,7 +633,7 @@ export default function ProjectTasksSection({ projectId }) {
 													<td colSpan="6" className="px-4 py-4">
 														<div className="space-y-3">
 															<h5 className="text-sm font-medium text-gray-900">
-																Notes ({taskNotes[task.id]?.length || 0})
+																{t("tasks.comments")} ({taskNotes[task.id]?.length || 0})
 															</h5>
 
 															{/* Existing Notes */}
@@ -512,11 +651,11 @@ export default function ProjectTasksSection({ projectId }) {
 																			>
 																				<div className="flex-1">
 																					<div className="flex items-center gap-2 mb-1">
-																						{note.is_system && (
+																						{note.is_system ? (
 																							<span className="px-2 py-1 text-xs bg-blue-100 text-blue-700 rounded-full font-medium">
-																								System
+																								{t("admin.system")}
 																							</span>
-																						)}
+																						) : null}
 																						{note.created_by_name && (
 																							<span className="px-2 py-1 text-xs bg-gray-100 text-gray-700 rounded-full font-medium">
 																								{note.created_by_name}
@@ -530,11 +669,6 @@ export default function ProjectTasksSection({ projectId }) {
 																						{formatDate(note.note_date, {
 																							includeTime: true,
 																						})}
-																						{note.created_by_name && (
-																							<span className="ml-2">
-																								by {note.created_by_name}
-																							</span>
-																						)}
 																					</p>
 																				</div>
 																				{!note.is_system && (
@@ -546,7 +680,7 @@ export default function ProjectTasksSection({ projectId }) {
 																							)
 																						}
 																						className="ml-2 text-red-500 hover:text-red-700 text-xs font-bold"
-																						title="Delete note"
+																						title={t("tasks.deleteNote")}
 																					>
 																						×
 																					</button>
@@ -560,7 +694,7 @@ export default function ProjectTasksSection({ projectId }) {
 															<div className="flex gap-2">
 																<input
 																	type="text"
-																	placeholder="Add a note..."
+																	placeholder={t("tasks.addComment")}
 																	value={newNote[task.id] || ""}
 																	onChange={(e) =>
 																		setNewNote((prev) => ({
@@ -584,7 +718,7 @@ export default function ProjectTasksSection({ projectId }) {
 																		!newNote[task.id]?.trim()
 																	}
 																>
-																	{loadingNotes[task.id] ? "Adding..." : "Add"}
+																	{loadingNotes[task.id] ? t("common.saving") : t("common.add")}
 																</Button>
 															</div>
 														</div>
@@ -599,6 +733,134 @@ export default function ProjectTasksSection({ projectId }) {
 					)}
 				</CardContent>
 			</Card>
+			{/* Edit Task Modal */}
+			{showEditTaskModal && (
+				<div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-[9999]">
+					<div className="bg-white rounded-lg p-6 w-full max-w-md mx-4">
+						<div className="flex items-center justify-between mb-4">
+							<h3 className="text-lg font-semibold text-gray-900">
+								{t("tasks.editTask")}:{" "}
+								{editingTask?.custom_task_name || editingTask?.task_name}
+							</h3>
+							<button
+								onClick={handleCloseEditModal}
+								className="text-gray-400 hover:text-gray-600"
+							>
+								<svg
+									className="w-5 h-5"
+									fill="currentColor"
+									viewBox="0 0 20 20"
+								>
+									<path
+										fillRule="evenodd"
+										d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z"
+										clipRule="evenodd"
+									/>
+								</svg>
+							</button>
+						</div>
+
+						<div className="space-y-4">
+							{/* Assignment */}
+							<div>
+								<label className="block text-sm font-medium text-gray-700 mb-1">
+									{t("tasks.assignedTo")}
+								</label>
+								<select
+									value={editTaskForm.assigned_to}
+									onChange={(e) =>
+										setEditTaskForm((prev) => ({
+											...prev,
+											assigned_to: e.target.value,
+										}))
+									}
+									className="w-full px-3 py-2 border border-gray-300 rounded-md focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
+								>
+									<option value="">{t("projects.unassigned")}</option>
+									{users.map((user) => (
+										<option key={user.id} value={user.id}>
+											{user.name}
+										</option>
+									))}
+								</select>
+							</div>
+
+							{/* Priority */}
+							<div>
+								<label className="block text-sm font-medium text-gray-700 mb-1">
+									{t("tasks.priority")}
+								</label>
+								<select
+									value={editTaskForm.priority}
+									onChange={(e) =>
+										setEditTaskForm((prev) => ({
+											...prev,
+											priority: e.target.value,
+										}))
+									}
+									className="w-full px-3 py-2 border border-gray-300 rounded-md focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
+								>
+									<option value="">{t("common.selectOption")}</option>
+									<option value="low">{t("tasks.low")}</option>
+									<option value="normal">{t("tasks.normal")}</option>
+									<option value="high">{t("tasks.high")}</option>
+									<option value="urgent">{t("tasks.urgent")}</option>
+								</select>
+							</div>
+
+							{/* Date Started */}
+							<div>
+								<label className="block text-sm font-medium text-gray-700 mb-1">
+									{t("tasks.dateStarted")}
+								</label>
+								<input
+									type="date"
+									value={editTaskForm.date_started}
+									onChange={(e) =>
+										setEditTaskForm((prev) => ({
+											...prev,
+											date_started: e.target.value,
+										}))
+									}
+									className="w-full px-3 py-2 border border-gray-300 rounded-md focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
+								/>
+							</div>
+
+							{/* Status */}
+							<div>
+								<label className="block text-sm font-medium text-gray-700 mb-1">
+									{t("tasks.status")}
+								</label>
+								<select
+									value={editTaskForm.status}
+									onChange={(e) =>
+										setEditTaskForm((prev) => ({
+											...prev,
+											status: e.target.value,
+										}))
+									}
+									className="w-full px-3 py-2 border border-gray-300 rounded-md focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
+								>
+									<option value="">{t("common.selectOption")}</option>
+									<option value="pending">{t("taskStatus.pending")}</option>
+									<option value="in_progress">{t("taskStatus.in_progress")}</option>
+									<option value="completed">{t("taskStatus.completed")}</option>
+									<option value="cancelled">{t("taskStatus.cancelled")}</option>
+								</select>
+							</div>
+						</div>
+
+						<div className="flex items-center justify-end gap-3 mt-6">
+							<Button variant="outline" onClick={handleCloseEditModal}>
+								{t("common.cancel")}
+							</Button>
+							<Button variant="primary" onClick={handleUpdateTask}>
+								{t("tasks.updateTask")}
+							</Button>
+						</div>
+					</div>
+				</div>
+			)}
 		</div>
 	);
 }

src/components/TaskCommentsModal.js

@@ -0,0 +1,371 @@
+"use client";
+
+import React, { useState, useEffect } from "react";
+import Button from "./ui/Button";
+import Badge from "./ui/Badge";
+import { formatDate } from "@/lib/utils";
+import { formatDistanceToNow, parseISO } from "date-fns";
+import { useTranslation } from "@/lib/i18n";
+
+export default function TaskCommentsModal({ task, isOpen, onClose }) {
+	const { t } = useTranslation();
+	const [notes, setNotes] = useState([]);
+	const [loading, setLoading] = useState(true);
+	const [newNote, setNewNote] = useState("");
+	const [loadingAdd, setLoadingAdd] = useState(false);
+
+	useEffect(() => {
+		if (isOpen && task) {
+			fetchNotes();
+		}
+	}, [isOpen, task]);
+
+	const fetchNotes = async () => {
+		if (!task?.id) return;
+		
+		try {
+			setLoading(true);
+			const res = await fetch(`/api/task-notes?task_id=${task.id}`);
+			const data = await res.json();
+			setNotes(data);
+		} catch (error) {
+			console.error("Failed to fetch notes:", error);
+		} finally {
+			setLoading(false);
+		}
+	};
+
+	const handleAddNote = async () => {
+		if (!newNote.trim() || !task?.id) return;
+
+		try {
+			setLoadingAdd(true);
+			const res = await fetch("/api/task-notes", {
+				method: "POST",
+				headers: { "Content-Type": "application/json" },
+				body: JSON.stringify({
+					task_id: task.id,
+					note: newNote.trim(),
+				}),
+			});
+
+			if (res.ok) {
+				setNewNote("");
+				await fetchNotes(); // Refresh notes
+			} else {
+				alert("Failed to add note");
+			}
+		} catch (error) {
+			alert("Error adding note");
+		} finally {
+			setLoadingAdd(false);
+		}
+	};
+
+	const handleDeleteNote = async (noteId) => {
+		if (!confirm("Are you sure you want to delete this note?")) return;
+
+		try {
+			const res = await fetch("/api/task-notes", {
+				method: "DELETE",
+				headers: { "Content-Type": "application/json" },
+				body: JSON.stringify({ note_id: noteId }),
+			});
+
+			if (res.ok) {
+				await fetchNotes(); // Refresh notes
+			} else {
+				alert("Failed to delete note");
+			}
+		} catch (error) {
+			alert("Error deleting note");
+		}
+	};
+
+	const handleKeyDown = (e) => {
+		if (e.key === "Escape") {
+			onClose();
+		} else if (e.key === "Enter" && e.ctrlKey) {
+			handleAddNote();
+		}
+	};
+
+	const getPriorityVariant = (priority) => {
+		switch (priority) {
+			case "urgent":
+				return "urgent";
+			case "high":
+				return "high";
+			case "normal":
+				return "normal";
+			case "low":
+				return "low";
+			default:
+				return "default";
+		}
+	};
+
+	const getStatusVariant = (status) => {
+		switch (status) {
+			case "completed":
+			case "cancelled":
+				return "success";
+			case "in_progress":
+				return "secondary";
+			case "pending":
+				return "primary";
+			default:
+				return "default";
+		}
+	};
+
+	const formatTaskDate = (dateString, label) => {
+		if (!dateString) return null;
+		try {
+			const date = dateString.includes("T") ? parseISO(dateString) : new Date(dateString);
+			return {
+				label,
+				relative: formatDistanceToNow(date, { addSuffix: true }),
+				absolute: formatDate(date, { includeTime: true })
+			};
+		} catch (error) {
+			return { label, relative: dateString, absolute: dateString };
+		}
+	};
+
+	if (!isOpen) return null;
+
+	return (
+		<div 
+			className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-[9999]"
+			onClick={(e) => e.target === e.currentTarget && onClose()}
+		>
+			<div className="bg-white rounded-lg w-full max-w-4xl mx-4 max-h-[90vh] flex flex-col">
+				{/* Header */}
+				<div className="p-6 border-b">
+					<div className="flex items-start justify-between mb-4">
+						<div className="flex-1">
+							<div className="flex items-center gap-3 mb-2">
+								<h3 className="text-xl font-semibold text-gray-900">
+									{task?.task_name}
+								</h3>
+								<Badge variant={getPriorityVariant(task?.priority)} size="sm">
+									{t(`tasks.${task?.priority}`)}
+								</Badge>
+								<Badge variant={getStatusVariant(task?.status)} size="sm">
+									{t(`taskStatus.${task?.status}`)}
+								</Badge>
+							</div>
+							<p className="text-sm text-gray-600 mb-3">
+								{t("tasks.project")}: <span className="font-medium">{task?.project_name}</span>
+							</p>
+						</div>
+						<button
+							onClick={onClose}
+							className="text-gray-400 hover:text-gray-600 text-xl font-semibold ml-4"
+							onKeyDown={handleKeyDown}
+						>
+							×
+						</button>
+					</div>
+
+					{/* Task Details Grid */}
+					<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4 p-4 bg-gray-50 rounded-lg">
+						{/* Location Information */}
+						{(task?.city || task?.address) && (
+							<div className="space-y-1">
+								<h4 className="text-xs font-medium text-gray-500 uppercase tracking-wide">{t("projects.locationDetails")}</h4>
+								{task?.city && (
+									<p className="text-sm text-gray-900">{task.city}</p>
+								)}
+								{task?.address && (
+									<p className="text-xs text-gray-600">{task.address}</p>
+								)}
+							</div>
+						)}
+
+						{/* Assignment Information */}
+						<div className="space-y-1">
+							<h4 className="text-xs font-medium text-gray-500 uppercase tracking-wide">{t("tasks.assignedTo")}</h4>
+							{task?.assigned_to_name ? (
+								<div>
+									<p className="text-sm text-gray-900">{task.assigned_to_name}</p>
+									<p className="text-xs text-gray-600">{task.assigned_to_email}</p>
+								</div>
+							) : (
+								<p className="text-sm text-gray-500 italic">{t("projects.unassigned")}</p>
+							)}
+						</div>
+
+						{/* Task Timing */}
+						<div className="space-y-1">
+							<h4 className="text-xs font-medium text-gray-500 uppercase tracking-wide">{t("tasks.dateCreated")}</h4>
+							{task?.max_wait_days && (
+								<p className="text-xs text-gray-600">{t("tasks.maxWait")}: {task.max_wait_days} {t("tasks.days")}</p>
+							)}
+							{(() => {
+								if (task?.status === "completed" && task?.date_completed) {
+									const dateInfo = formatTaskDate(task.date_completed, t("taskStatus.completed"));
+									return (
+										<div>
+											<p className="text-sm text-green-700 font-medium">{dateInfo.relative}</p>
+											<p className="text-xs text-gray-600">{dateInfo.absolute}</p>
+										</div>
+									);
+								} else if (task?.status === "in_progress" && task?.date_started) {
+									const dateInfo = formatTaskDate(task.date_started, t("tasks.dateStarted"));
+									return (
+										<div>
+											<p className="text-sm text-blue-700 font-medium">{t("tasks.dateStarted")} {dateInfo.relative}</p>
+											<p className="text-xs text-gray-600">{dateInfo.absolute}</p>
+										</div>
+									);
+								} else if (task?.date_added) {
+									const dateInfo = formatTaskDate(task.date_added, t("tasks.dateCreated"));
+									return (
+										<div>
+											<p className="text-sm text-gray-700 font-medium">{t("tasks.dateCreated")} {dateInfo.relative}</p>
+											<p className="text-xs text-gray-600">{dateInfo.absolute}</p>
+										</div>
+									);
+								}
+								return null;
+							})()}
+						</div>
+
+						{/* Task Description */}
+						{task?.description && (
+							<div className="space-y-1 md:col-span-2 lg:col-span-3">
+								<h4 className="text-xs font-medium text-gray-500 uppercase tracking-wide">{t("tasks.description")}</h4>
+								<p className="text-sm text-gray-900 leading-relaxed">{task.description}</p>
+							</div>
+						)}
+					</div>
+				</div>
+
+				{/* Content */}
+				<div className="flex-1 overflow-y-auto p-6">
+					{loading ? (
+						<div className="text-center py-8">
+							<div className="animate-pulse space-y-4">
+								<div className="h-4 bg-gray-200 rounded w-3/4"></div>
+								<div className="h-4 bg-gray-200 rounded w-1/2"></div>
+								<div className="h-4 bg-gray-200 rounded w-2/3"></div>
+							</div>
+						</div>
+					) : (
+						<div className="space-y-4">
+							<div className="flex items-center gap-2 mb-4">
+								<h5 className="text-lg font-medium text-gray-900">
+									{t("tasks.comments")}
+								</h5>
+								<Badge variant="secondary" size="sm">
+									{notes.length}
+								</Badge>
+							</div>
+							
+							{notes.length === 0 ? (
+								<div className="text-center py-12 text-gray-500">
+									<div className="w-16 h-16 mx-auto mb-4 bg-gray-100 rounded-full flex items-center justify-center">
+										<span className="text-2xl">💬</span>
+									</div>
+									<p className="text-lg font-medium mb-1">{t("tasks.noComments")}</p>
+									<p className="text-sm">Bądź pierwszy, który doda komentarz!</p>
+								</div>
+							) : (
+								<div className="space-y-4">
+									{notes.map((note) => (
+										<div
+											key={note.note_id}
+											className={`p-4 rounded-lg border flex justify-between items-start transition-colors ${
+												note.is_system
+													? "bg-blue-50 border-blue-200 hover:bg-blue-100"
+													: "bg-white border-gray-200 hover:bg-gray-50 shadow-sm"
+											}`}
+										>
+											<div className="flex-1">
+												<div className="flex items-center gap-2 mb-2">
+													{note.is_system ? (
+														<span className="px-2 py-1 text-xs bg-blue-100 text-blue-700 rounded-full font-medium flex items-center gap-1">
+															<span>🤖</span>
+															{t("admin.system")}
+														</span>
+													) : (
+														<span className="px-2 py-1 text-xs bg-gray-100 text-gray-700 rounded-full font-medium flex items-center gap-1">
+															<span>👤</span>
+															{note.created_by_name || t("userRoles.user")}
+														</span>
+													)}
+													<span className="text-xs text-gray-500 font-medium">
+														{formatDate(note.note_date, {
+															includeTime: true,
+														})}
+													</span>
+												</div>
+												<p className="text-sm text-gray-800 leading-relaxed">
+													{note.note}
+												</p>
+											</div>
+											{!note.is_system && (
+												<button
+													onClick={() => handleDeleteNote(note.note_id)}
+													className="ml-3 p-1 text-red-400 hover:text-red-600 hover:bg-red-50 rounded transition-colors"
+													title={t("common.delete")}
+												>
+													<span className="text-sm">🗑️</span>
+												</button>
+											)}
+										</div>
+									))}
+								</div>
+							)}
+						</div>
+					)}
+				</div>
+
+				{/* Footer - Add new comment */}
+				<div className="p-6 border-t bg-gradient-to-r from-gray-50 to-gray-100">
+					<div className="space-y-4">
+						<div className="flex items-center gap-2">
+							<span className="text-lg">💬</span>
+							<label className="text-sm font-medium text-gray-700">
+								{t("tasks.addComment")}
+							</label>
+						</div>
+						<textarea
+							value={newNote}
+							onChange={(e) => setNewNote(e.target.value)}
+							placeholder={t("common.addNotePlaceholder")}
+							className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent resize-none shadow-sm"
+							rows={3}
+							onKeyDown={handleKeyDown}
+						/>
+						<div className="flex items-center justify-between">
+							<p className="text-xs text-gray-500 flex items-center gap-1">
+								<span>⌨️</span>
+								Naciśnij Ctrl+Enter aby wysłać lub Escape aby zamknąć
+							</p>
+							<div className="flex gap-3">
+								<Button
+									variant="secondary"
+									size="sm"
+									onClick={onClose}
+								>
+									{t("common.close")}
+								</Button>
+								<Button
+									variant="primary"
+									size="sm"
+									onClick={handleAddNote}
+									disabled={loadingAdd || !newNote.trim()}
+								>
+									{loadingAdd ? t("common.saving") : `💾 ${t("tasks.addComment")}`}
+								</Button>
+							</div>
+						</div>
+					</div>
+				</div>
+			</div>
+		</div>
+	);
+}

src/components/TaskStatusDropdownSimple.js

@@ -3,13 +3,16 @@
 import { useState, useRef, useEffect } from "react";
 import { createPortal } from "react-dom";
 import Badge from "@/components/ui/Badge";
+import { useTranslation } from "@/lib/i18n";
 
 export default function TaskStatusDropdown({
 	task,
 	size = "sm",
 	showDropdown = true,
 	onStatusChange,
-}) {	const [status, setStatus] = useState(task.status);
+}) {	
+	const { t } = useTranslation();
+	const [status, setStatus] = useState(task.status);
 	const [loading, setLoading] = useState(false);
 	const [isOpen, setIsOpen] = useState(false);
 	const [dropdownPosition, setDropdownPosition] = useState({ x: 0, y: 0, position: 'bottom' });
@@ -23,19 +26,19 @@ export default function TaskStatusDropdown({
 
 	const statusConfig = {
 		pending: {
-			label: "Pending",
+			label: t("taskStatus.pending"),
 			variant: "warning",
 		},
 		in_progress: {
-			label: "In Progress",
+			label: t("taskStatus.in_progress"),
 			variant: "primary",
 		},
 		completed: {
-			label: "Completed",
+			label: t("taskStatus.completed"),
 			variant: "success",
 		},
 		cancelled: {
-			label: "Cancelled",
+			label: t("taskStatus.cancelled"),
 			variant: "danger",
 		},
 	};

src/components/ui/Button.js

@@ -9,6 +9,7 @@ const buttonVariants = {
 	danger: "bg-red-600 hover:bg-red-700 text-white",
 	success: "bg-green-600 hover:bg-green-700 text-white",
 	outline: "border border-blue-600 text-blue-600 hover:bg-blue-50",
+	ghost: "text-gray-600 hover:text-gray-900 hover:bg-gray-50",
 };
 
 const buttonSizes = {

src/components/ui/LanguageSwitcher.js

@@ -0,0 +1,42 @@
+"use client";
+
+import { useTranslation } from '@/lib/i18n';
+
+const LanguageSwitcher = ({ className = '' }) => {
+  const { language, changeLanguage, availableLanguages, t } = useTranslation();
+
+  const languageNames = {
+    pl: 'Polski',
+    en: 'English'
+  };
+
+  return (
+    <div className={`relative ${className}`}>
+      <select
+        value={language}
+        onChange={(e) => changeLanguage(e.target.value)}
+        className="appearance-none bg-white border border-gray-300 rounded-md px-3 py-1 pr-8 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
+        title={t('common.selectLanguage')}
+      >
+        {availableLanguages.map((lang) => (
+          <option key={lang} value={lang}>
+            {languageNames[lang] || lang.toUpperCase()}
+          </option>
+        ))}
+      </select>
+      
+      {/* Custom dropdown arrow */}
+      <div className="pointer-events-none absolute inset-y-0 right-0 flex items-center px-2 text-gray-700">
+        <svg
+          className="fill-current h-4 w-4"
+          xmlns="http://www.w3.org/2000/svg"
+          viewBox="0 0 20 20"
+        >
+          <path d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" />
+        </svg>
+      </div>
+    </div>
+  );
+};
+
+export default LanguageSwitcher;

src/components/ui/Navigation.js

@@ -3,10 +3,13 @@
 import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { useSession, signOut } from "next-auth/react";
+import { useTranslation } from "@/lib/i18n";
+import LanguageSwitcher from "./LanguageSwitcher";
 
 const Navigation = () => {
 	const pathname = usePathname();
 	const { data: session, status } = useSession();
+	const { t } = useTranslation();
 
 	const isActive = (path) => {
 		if (path === "/") return pathname === "/";
@@ -18,16 +21,16 @@ const Navigation = () => {
 	};
 
 	const navItems = [
-		{ href: "/", label: "Dashboard" },
-		{ href: "/projects", label: "Projects" },
-		{ href: "/tasks/templates", label: "Task Templates" },
-		{ href: "/project-tasks", label: "Project Tasks" },
-		{ href: "/contracts", label: "Contracts" },
+		{ href: "/projects", label: t('navigation.projects') },
+		{ href: "/calendar", label: t('navigation.calendar') || 'Kalendarz' },
+		{ href: "/tasks/templates", label: t('navigation.taskTemplates') },
+		{ href: "/project-tasks", label: t('navigation.projectTasks') },
+		{ href: "/contracts", label: t('navigation.contracts') },
 	];
 
 	// Add admin-only items
 	if (session?.user?.role === 'admin') {
-		navItems.push({ href: "/admin/users", label: "User Management" });
+		navItems.push({ href: "/admin/users", label: t('navigation.userManagement') });
 	}
 
 	const handleSignOut = async () => {
@@ -44,14 +47,14 @@ const Navigation = () => {
 			<div className="max-w-6xl mx-auto px-6">
 				<div className="flex items-center justify-between h-16">
 					<div className="flex items-center">
-						<Link href="/" className="text-xl font-bold text-gray-900">
-							Project Panel
+						<Link href="/projects" className="text-xl font-bold text-gray-900">
+							{t('navigation.projectPanel')}
 						</Link>
 					</div>
 
 					<div className="flex items-center space-x-4">
 						{status === "loading" ? (
-							<div className="text-gray-500">Loading...</div>
+							<div className="text-gray-500">{t('navigation.loading')}</div>
 						) : session ? (
 							<>
 								<div className="flex space-x-8">
@@ -71,10 +74,12 @@ const Navigation = () => {
 								</div>
 								
 								<div className="flex items-center space-x-4 ml-8 pl-8 border-l border-gray-200">
+									{/* <LanguageSwitcher /> */}
+									
 									<div className="flex items-center space-x-2">
 										<div className="text-sm">
 											<div className="font-medium text-gray-900">{session.user.name}</div>
-											<div className="text-gray-500 capitalize">{session.user.role?.replace('_', ' ')}</div>
+											{/* <div className="text-gray-500 capitalize">{t(`userRoles.${session.user.role}`) || session.user.role?.replace('_', ' ')}</div> */}
 										</div>
 									</div>
 									
@@ -82,17 +87,20 @@ const Navigation = () => {
 										onClick={handleSignOut}
 										className="bg-gray-100 hover:bg-gray-200 text-gray-700 px-3 py-2 rounded-md text-sm font-medium transition-colors"
 									>
-										Sign Out
+										{t('navigation.signOut')}
 									</button>
 								</div>
 							</>
 						) : (
+							<>
+								<LanguageSwitcher />
 								<Link
 									href="/auth/signin"
 									className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-md text-sm font-medium transition-colors"
 								>
-								Sign In
+									{t('navigation.signIn')}
 								</Link>
+							</>
 						)}
 					</div>
 				</div>

src/components/ui/ProjectCalendarWidget.js

@@ -0,0 +1,331 @@
+"use client";
+
+import { useState, useEffect } from "react";
+import Link from "next/link";
+import { Card, CardHeader, CardContent } from "./Card";
+import Badge from "./Badge";
+import Button from "./Button";
+import { formatDate } from "@/lib/utils";
+import {
+	format,
+	startOfMonth,
+	endOfMonth,
+	startOfWeek,
+	endOfWeek,
+	addDays,
+	isSameMonth,
+	isSameDay,
+	addMonths,
+	subMonths,
+	parseISO,
+	isAfter,
+	isBefore,
+	startOfDay,
+	addWeeks
+} from "date-fns";
+import { pl } from "date-fns/locale";
+
+const statusColors = {
+	registered: "bg-blue-100 text-blue-800",
+	approved: "bg-green-100 text-green-800", 
+	pending: "bg-yellow-100 text-yellow-800",
+	in_progress: "bg-orange-100 text-orange-800",
+	fulfilled: "bg-gray-100 text-gray-800",
+	cancelled: "bg-red-100 text-red-800",
+};
+
+const statusTranslations = {
+	registered: "Zarejestrowany",
+	approved: "Zatwierdzony",
+	pending: "Oczekujący",
+	in_progress: "W trakcie",
+	fulfilled: "Zakończony",
+	cancelled: "Wycofany",
+};
+
+export default function ProjectCalendarWidget({ 
+	projects = [], 
+	compact = false, 
+	showUpcoming = true,
+	maxUpcoming = 5 
+}) {
+	const [currentDate, setCurrentDate] = useState(new Date());
+	const [viewMode, setViewMode] = useState(compact ? 'upcoming' : 'mini-calendar');
+
+	// Filter projects that have finish dates and are not fulfilled
+	const activeProjects = projects.filter(p => 
+		p.finish_date && p.project_status !== 'fulfilled'
+	);
+
+	const getProjectsForDate = (date) => {
+		return activeProjects.filter(project => {
+			if (!project.finish_date) return false;
+			try {
+				const projectDate = parseISO(project.finish_date);
+				return isSameDay(projectDate, date);
+			} catch (error) {
+				return false;
+			}
+		});
+	};
+
+	const getUpcomingProjects = () => {
+		const today = startOfDay(new Date());
+		const nextMonth = addWeeks(today, 4);
+		
+		return activeProjects
+			.filter(project => {
+				if (!project.finish_date) return false;
+				try {
+					const projectDate = parseISO(project.finish_date);
+					return isAfter(projectDate, today) && isBefore(projectDate, nextMonth);
+				} catch (error) {
+					return false;
+				}
+			})
+			.sort((a, b) => {
+				const dateA = parseISO(a.finish_date);
+				const dateB = parseISO(b.finish_date);
+				return dateA - dateB;
+			})
+			.slice(0, maxUpcoming);
+	};
+
+	const getOverdueProjects = () => {
+		const today = startOfDay(new Date());
+		
+		return activeProjects
+			.filter(project => {
+				if (!project.finish_date) return false;
+				try {
+					const projectDate = parseISO(project.finish_date);
+					return isBefore(projectDate, today);
+				} catch (error) {
+					return false;
+				}
+			})
+			.sort((a, b) => {
+				const dateA = parseISO(a.finish_date);
+				const dateB = parseISO(b.finish_date);
+				return dateB - dateA; // Most recently overdue first
+			})
+			.slice(0, maxUpcoming);
+	};
+
+	const renderMiniCalendar = () => {
+		const monthStart = startOfMonth(currentDate);
+		const monthEnd = endOfMonth(currentDate);
+		const calendarStart = startOfWeek(monthStart, { weekStartsOn: 1 });
+		const calendarEnd = endOfWeek(monthEnd, { weekStartsOn: 1 });
+
+		const days = [];
+		let day = calendarStart;
+
+		while (day <= calendarEnd) {
+			days.push(day);
+			day = addDays(day, 1);
+		}
+
+		const weekdays = ['P', 'W', 'Ś', 'C', 'P', 'S', 'N'];
+
+		return (
+			<div className="space-y-3">
+				{/* Calendar Header */}
+				<div className="flex items-center justify-between">
+					<h3 className="text-sm font-medium text-gray-900">
+						{format(currentDate, 'LLLL yyyy', { locale: pl })}
+					</h3>
+					<div className="flex space-x-1">
+						<button
+							onClick={() => setCurrentDate(subMonths(currentDate, 1))}
+							className="p-1 hover:bg-gray-100 rounded"
+						>
+							<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+								<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
+							</svg>
+						</button>
+						<button
+							onClick={() => setCurrentDate(addMonths(currentDate, 1))}
+							className="p-1 hover:bg-gray-100 rounded"
+						>
+							<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+								<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+							</svg>
+						</button>
+					</div>
+				</div>
+
+				{/* Weekday Headers */}
+				<div className="grid grid-cols-7 gap-1">
+					{weekdays.map(weekday => (
+						<div key={weekday} className="text-xs font-medium text-gray-500 text-center p-1">
+							{weekday}
+						</div>
+					))}
+				</div>
+
+				{/* Calendar Grid */}
+				<div className="grid grid-cols-7 gap-1">
+					{days.map((day, index) => {
+						const dayProjects = getProjectsForDate(day);
+						const isCurrentMonth = isSameMonth(day, currentDate);
+						const isToday = isSameDay(day, new Date());
+						const hasProjects = dayProjects.length > 0;
+						
+						return (
+							<div
+								key={index}
+								className={`text-xs p-1 text-center relative ${
+									!isCurrentMonth ? 'text-gray-300' : 
+									isToday ? 'bg-blue-100 text-blue-700 font-semibold rounded' : 
+									'text-gray-700'
+								} ${hasProjects && isCurrentMonth ? 'font-semibold' : ''}`}
+								title={hasProjects ? `${dayProjects.length} projekt(ów): ${dayProjects.map(p => p.project_name).join(', ')}` : ''}
+							>
+								{format(day, 'd')}
+								{hasProjects && isCurrentMonth && (
+									<div className="absolute bottom-0 left-1/2 transform -translate-x-1/2 w-1 h-1 bg-red-500 rounded-full"></div>
+								)}
+							</div>
+						);
+					})}
+				</div>
+			</div>
+		);
+	};
+
+	const renderUpcomingList = () => {
+		const upcomingProjects = getUpcomingProjects();
+		const overdueProjects = getOverdueProjects();
+
+		return (
+			<div className="space-y-4">
+				{/* Overdue Projects */}
+				{overdueProjects.length > 0 && (
+					<div>
+						<h4 className="text-sm font-medium text-red-600 mb-2">
+							Przeterminowane ({overdueProjects.length})
+						</h4>
+						<div className="space-y-2">
+							{overdueProjects.map(project => (
+								<Link
+									key={project.project_id}
+									href={`/projects/${project.project_id}`}
+									className="block p-2 bg-red-50 rounded border border-red-200 hover:bg-red-100 transition-colors"
+								>
+									<div className="text-sm font-medium text-gray-900 truncate">
+										{project.project_name}
+									</div>
+									<div className="text-xs text-red-600">
+										{formatDate(project.finish_date)}
+									</div>
+								</Link>
+							))}
+						</div>
+					</div>
+				)}
+
+				{/* Upcoming Projects */}
+				{upcomingProjects.length > 0 && (
+					<div>
+						<h4 className="text-sm font-medium text-gray-900 mb-2">
+							Nadchodzące ({upcomingProjects.length})
+						</h4>
+						<div className="space-y-2">
+							{upcomingProjects.map(project => {
+								const daysUntilDeadline = Math.ceil((parseISO(project.finish_date) - new Date()) / (1000 * 60 * 60 * 24));
+								
+								return (
+									<Link
+										key={project.project_id}
+										href={`/projects/${project.project_id}`}
+										className="block p-2 bg-gray-50 rounded hover:bg-gray-100 transition-colors"
+									>
+										<div className="text-sm font-medium text-gray-900 truncate">
+											{project.project_name}
+										</div>
+										<div className="text-xs text-gray-600">
+											{formatDate(project.finish_date)} • za {daysUntilDeadline} dni
+										</div>
+									</Link>
+								);
+							})}
+						</div>
+					</div>
+				)}
+
+				{upcomingProjects.length === 0 && overdueProjects.length === 0 && (
+					<div className="text-sm text-gray-500 text-center py-4">
+						Brak nadchodzących terminów
+					</div>
+				)}
+			</div>
+		);
+	};
+
+	if (activeProjects.length === 0) {
+		return (
+			<Card>
+				<CardHeader>
+					<div className="flex items-center justify-between">
+						<h3 className="text-lg font-semibold">Kalendarz projektów</h3>
+						<Link href="/calendar">
+							<Button variant="outline" size="sm">
+								Zobacz pełny kalendarz
+							</Button>
+						</Link>
+					</div>
+				</CardHeader>
+				<CardContent>
+					<div className="text-center py-8 text-gray-500">
+						Brak aktywnych projektów z terminami
+					</div>
+				</CardContent>
+			</Card>
+		);
+	}
+
+	return (
+		<Card>
+			<CardHeader>
+				<div className="flex items-center justify-between">
+					<h3 className="text-lg font-semibold">Kalendarz projektów</h3>
+					<div className="flex items-center space-x-2">
+						{!compact && (
+							<div className="flex rounded-md bg-gray-100 p-1">
+								<button
+									onClick={() => setViewMode('mini-calendar')}
+									className={`px-2 py-1 text-xs rounded ${
+										viewMode === 'mini-calendar' 
+											? 'bg-white text-gray-900 shadow-sm' 
+											: 'text-gray-600 hover:text-gray-900'
+									}`}
+								>
+									Kalendarz
+								</button>
+								<button
+									onClick={() => setViewMode('upcoming')}
+									className={`px-2 py-1 text-xs rounded ${
+										viewMode === 'upcoming' 
+											? 'bg-white text-gray-900 shadow-sm' 
+											: 'text-gray-600 hover:text-gray-900'
+									}`}
+								>
+									Lista
+								</button>
+							</div>
+						)}
+						<Link href="/calendar">
+							<Button variant="outline" size="sm">
+								Pełny kalendarz
+							</Button>
+						</Link>
+					</div>
+				</div>
+			</CardHeader>
+			<CardContent>
+				{viewMode === 'mini-calendar' ? renderMiniCalendar() : renderUpcomingList()}
+			</CardContent>
+		</Card>
+	);
+}

src/components/ui/ProjectMap.js

@@ -32,6 +32,7 @@ export default function ProjectMap({
 			label: "In Progress (Construction)",
 		},
 		fulfilled: { color: "#10B981", label: "Completed" },
+		cancelled: { color: "#EF4444", label: "Cancelled" },
 	};
 
 	useEffect(() => {
@@ -51,7 +52,7 @@ export default function ProjectMap({
 			<div className="space-y-2">
 				<div className="flex items-center justify-between">
 					<h3 className="text-sm font-medium text-gray-700">
-						Project Location
+						Lokalizacja projektu
 					</h3>
 					<div className="text-xs text-gray-500">No coordinates available</div>
 				</div>
@@ -85,7 +86,7 @@ export default function ProjectMap({
 			<div className="flex items-center justify-between">
 				<div className="flex items-center gap-2">
 					<h3 className="text-sm font-medium text-gray-700">
-						Project Location
+						Lokalizacja projektu
 					</h3>
 					<div
 						className="w-3 h-3 rounded-full border border-white shadow-sm"
@@ -95,7 +96,7 @@ export default function ProjectMap({
 				</div>
 				{showLayerControl && (
 					<div className="text-xs text-gray-500">
-						Use the layer control (📚) to switch map views
+						{/* Use the layer control (📚) to switch map views */}
 					</div>
 				)}
 			</div>
@@ -158,7 +159,7 @@ export default function ProjectMap({
 			</div>
 			<div className="flex items-center justify-between">
 				<p className="text-xs text-gray-500">
-					Coordinates: {coords.lat.toFixed(6)}, {coords.lng.toFixed(6)}
+					{coords.lat.toFixed(6)}, {coords.lng.toFixed(6)}
 				</p>
 				<div className="flex items-center gap-1 text-xs text-gray-500">
 					<div

src/components/ui/Tooltip.js

@@ -0,0 +1,95 @@
+"use client";
+
+import { useState, useRef, useEffect } from "react";
+import { createPortal } from "react-dom";
+
+export default function Tooltip({ children, content, className = "" }) {
+	const [isVisible, setIsVisible] = useState(false);
+	const [position, setPosition] = useState({ top: 0, left: 0 });
+	const triggerRef = useRef(null);
+	const tooltipRef = useRef(null);
+
+	const updatePosition = () => {
+		if (triggerRef.current && tooltipRef.current) {
+			const triggerRect = triggerRef.current.getBoundingClientRect();
+			const tooltipRect = tooltipRef.current.getBoundingClientRect();
+			const scrollY = window.scrollY;
+			const scrollX = window.scrollX;
+
+			// Calculate position (above the trigger by default)
+			let top = triggerRect.top + scrollY - tooltipRect.height - 8;
+			let left = triggerRect.left + scrollX + (triggerRect.width / 2) - (tooltipRect.width / 2);
+
+			// Keep tooltip within viewport
+			if (left < 10) left = 10;
+			if (left + tooltipRect.width > window.innerWidth - 10) {
+				left = window.innerWidth - tooltipRect.width - 10;
+			}
+
+			// If tooltip would go above viewport, show below instead
+			if (top < scrollY + 10) {
+				top = triggerRect.bottom + scrollY + 8;
+			}
+
+			setPosition({ top, left });
+		}
+	};
+
+	const handleMouseEnter = () => {
+		setIsVisible(true);
+	};
+
+	const handleMouseLeave = () => {
+		setIsVisible(false);
+	};
+
+	useEffect(() => {
+		if (isVisible) {
+			// Small delay to ensure tooltip is rendered before positioning
+			const timer = setTimeout(() => {
+				updatePosition();
+			}, 10);
+
+			const handleScroll = () => updatePosition();
+			const handleResize = () => updatePosition();
+
+			window.addEventListener("scroll", handleScroll, true);
+			window.addEventListener("resize", handleResize);
+
+			return () => {
+				clearTimeout(timer);
+				window.removeEventListener("scroll", handleScroll, true);
+				window.removeEventListener("resize", handleResize);
+			};
+		}
+	}, [isVisible]);
+
+	const tooltip = isVisible && (
+		<div
+			ref={tooltipRef}
+			className={`fixed z-50 px-3 py-2 text-sm bg-gray-900 text-white rounded-lg shadow-lg border max-w-sm ${className}`}
+			style={{
+				top: position.top,
+				left: position.left,
+			}}
+		>
+			{content}
+			{/* Arrow pointing down */}
+			<div className="absolute top-full left-1/2 transform -translate-x-1/2 border-4 border-transparent border-t-gray-900"></div>
+		</div>
+	);
+
+	return (
+		<>
+			<span
+				ref={triggerRef}
+				onMouseEnter={handleMouseEnter}
+				onMouseLeave={handleMouseLeave}
+				className="inline-block"
+			>
+				{children}
+			</span>
+			{typeof document !== "undefined" && createPortal(tooltip, document.body)}
+		</>
+	);
+}

src/lib/auth.js

@@ -4,7 +4,7 @@ import bcrypt from "bcryptjs";
 import { z } from "zod";
 
 const loginSchema = z.object({
-	email: z.string().email("Invalid email format"),
+	username: z.string().min(1, "Username is required"),
 	password: z.string().min(6, "Password must be at least 6 characters"),
 });
 
@@ -13,7 +13,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 		Credentials({
 			name: "credentials",
 			credentials: {
-				email: { label: "Email", type: "email" },
+				username: { label: "Username", type: "text" },
 				password: { label: "Password", type: "password" },
 			},
 			async authorize(credentials) {
@@ -28,13 +28,13 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 					const user = db
 						.prepare(
 							`
-            SELECT id, email, name, password_hash, role, is_active, 
+            SELECT id, username, name, password_hash, role, is_active, 
                    failed_login_attempts, locked_until
             FROM users 
-            WHERE email = ? AND is_active = 1
+            WHERE username = ? AND is_active = 1
           `
 						)
-						.get(validatedFields.email);
+						.get(validatedFields.username);
 
 					if (!user) {
 						throw new Error("Invalid credentials");
@@ -75,7 +75,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 								userId: user.id,
 								resourceType: RESOURCE_TYPES.SESSION,
 								details: {
-									email: validatedFields.email,
+									username: validatedFields.username,
 									reason: "invalid_password",
 									failed_attempts: user.failed_login_attempts + 1,
 								},
@@ -107,7 +107,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 							userId: user.id,
 							resourceType: RESOURCE_TYPES.SESSION,
 							details: {
-								email: user.email,
+								username: user.username,
 								role: user.role,
 							},
 						});
@@ -117,7 +117,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 
 					return {
 						id: user.id,
-						email: user.email,
+						username: user.username,
 						name: user.name,
 						role: user.role,
 					};
@@ -128,30 +128,29 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 			},
 		}),
 	],
-	session: {
-		strategy: "jwt",
-		maxAge: 30 * 24 * 60 * 60, // 30 days
-	},
 	callbacks: {
 		async jwt({ token, user }) {
 			if (user) {
 				token.role = user.role;
-				token.userId = user.id;
+				token.username = user.username;
 			}
 			return token;
 		},
 		async session({ session, token }) {
 			if (token) {
-				session.user.id = token.userId;
+				session.user.id = token.sub;
 				session.user.role = token.role;
+				session.user.username = token.username;
 			}
 			return session;
 		},
 	},
 	pages: {
 		signIn: "/auth/signin",
-		signOut: "/auth/signout",
-		error: "/auth/error",
 	},
-	debug: process.env.NODE_ENV === "development",
+	session: {
+		strategy: "jwt",
+		maxAge: 24 * 60 * 60, // 24 hours
+	},
+	secret: process.env.NEXTAUTH_SECRET,
 });

src/lib/auth_backup.js

@@ -0,0 +1,156 @@
+import NextAuth from "next-auth";
+import Credentials from "next-auth/providers/credentials";
+import bcrypt from "bcryptjs";
+import { z } from "zod";
+
+const loginSchema = z.object({
+	username: z.string().min(1, "Username is required"),
+	password: z.string().min(6, "Password must be at least 6 characters"),
+});
+
+export const { handlers, auth, signIn, signOut } = NextAuth({
+	providers: [
+		Credentials({
+			name: "credentials",
+			credentials: {
+				username: { label: "Username", type: "text" },
+				password: { label: "Password", type: "password" },
+			},
+			async authorize(credentials) {
+				try {
+					// Import database here to avoid edge runtime issues
+					const { default: db } = await import("./db.js");
+
+					// Validate input
+					const validatedFields = loginSchema.parse(credentials);
+
+					// Check if user exists and is active
+					const user = db
+						.prepare(
+							`
+            SELECT id, username, name, password_hash, role, is_active, 
+                   failed_login_attempts, locked_until
+            FROM users 
+            WHERE username = ? AND is_active = 1
+          `
+						)
+						.get(validatedFields.username);
+
+					if (!user) {
+						throw new Error("Invalid credentials");
+					}
+
+					// Check if account is locked
+					if (user.locked_until && new Date(user.locked_until) > new Date()) {
+						throw new Error("Account temporarily locked");
+					}
+
+					// Verify password
+					const isValidPassword = await bcrypt.compare(
+						validatedFields.password,
+						user.password_hash
+					);
+
+					if (!isValidPassword) {
+						// Increment failed attempts
+						db.prepare(
+							`
+              UPDATE users 
+              SET failed_login_attempts = failed_login_attempts + 1,
+                  locked_until = CASE 
+                    WHEN failed_login_attempts >= 4 
+                    THEN datetime('now', '+15 minutes')
+                    ELSE locked_until 
+                  END
+              WHERE id = ?
+            `
+						).run(user.id);
+
+						// Log failed login attempt (only in Node.js runtime)
+						try {
+							const { logAuditEventSafe, AUDIT_ACTIONS, RESOURCE_TYPES } =
+								await import("./auditLogSafe.js");
+							await logAuditEventSafe({
+								action: AUDIT_ACTIONS.LOGIN_FAILED,
+								userId: user.id,
+								resourceType: RESOURCE_TYPES.SESSION,
+								details: {
+									username: validatedFields.username,
+									reason: "invalid_password",
+									failed_attempts: user.failed_login_attempts + 1,
+								},
+							});
+						} catch (auditError) {
+							console.error("Failed to log audit event:", auditError);
+						}
+
+						throw new Error("Invalid credentials");
+					}
+
+					// Reset failed attempts and update last login
+					db.prepare(
+						`
+            UPDATE users 
+            SET failed_login_attempts = 0, 
+                locked_until = NULL,
+                last_login = CURRENT_TIMESTAMP
+            WHERE id = ?
+          `
+					).run(user.id);
+
+					// Log successful login (only in Node.js runtime)
+					try {
+						const { logAuditEventSafe, AUDIT_ACTIONS, RESOURCE_TYPES } =
+							await import("./auditLogSafe.js");
+						await logAuditEventSafe({
+							action: AUDIT_ACTIONS.LOGIN,
+							userId: user.id,
+							resourceType: RESOURCE_TYPES.SESSION,
+							details: {
+								username: user.username,
+								role: user.role,
+							},
+						});
+					} catch (auditError) {
+						console.error("Failed to log audit event:", auditError);
+					}
+
+					return {
+						id: user.id,
+						username: user.username,
+						name: user.name,
+						role: user.role,
+					};
+				} catch (error) {
+					console.error("Login error:", error);
+					return null;
+				}
+			},
+		}),
+	],
+	callbacks: {
+		async jwt({ token, user }) {
+			if (user) {
+				token.role = user.role;
+				token.username = user.username;
+			}
+			return token;
+		},
+		async session({ session, token }) {
+			if (token) {
+				session.user.id = token.sub;
+				session.user.role = token.role;
+				session.user.username = token.username;
+			}
+			return session;
+		},
+	},
+	pages: {
+		signIn: "/auth/signin",
+	},
+	session: {
+		strategy: "jwt",
+		maxAge: 24 * 60 * 60, // 24 hours
+	},
+	secret: process.env.NEXTAUTH_SECRET,
+});

src/lib/i18n.js

@@ -0,0 +1,954 @@
+"use client";
+
+import { createContext, useContext, useState, useEffect } from 'react';
+
+// Translation context
+const TranslationContext = createContext();
+
+// Translation data
+const translations = {
+  pl: {
+    // Navigation
+    navigation: {
+      dashboard: "Panel główny",
+      projects: "Projekty", 
+      calendar: "Kalendarz",
+      taskTemplates: "Szablony zadań",
+      projectTasks: "Zadania projektów",
+      contracts: "Umowy",
+      userManagement: "Zarządzanie użytkownikami",
+      projectPanel: "Panel Projektów",
+      loading: "Ładowanie...",
+      signOut: "Wyloguj się",
+      signIn: "Zaloguj się"
+    },
+    
+    // Common UI elements
+    common: {
+      save: "Zapisz",
+      cancel: "Anuluj",
+      delete: "Usuń",
+      edit: "Edytuj",
+      add: "Dodaj",
+      create: "Utwórz",
+      update: "Aktualizuj",
+      search: "Szukaj",
+      filter: "Filtruj",
+      loading: "Ładowanie...",
+      saving: "Zapisywanie...",
+      creating: "Tworzenie...",
+      updating: "Aktualizowanie...",
+      yes: "Tak",
+      no: "Nie",
+      confirm: "Potwierdź",
+      close: "Zamknij",
+      back: "Wstecz",
+      next: "Dalej",
+      previous: "Poprzedni",
+      page: "Strona",
+      of: "z",
+      items: "pozycji",
+      all: "Wszystkie",
+      none: "Brak",
+      required: "wymagane",
+      optional: "opcjonalne",
+      selectOption: "Wybierz opcję",
+      selectLanguage: "Wybierz język",
+      noResults: "Brak wyników",
+      error: "Błąd",
+      success: "Sukces",
+      warning: "Ostrzeżenie",
+      info: "Informacja",
+      deleteConfirm: "Czy na pewno chcesz to usunąć?",
+      addNote: "Dodaj notatkę",
+      addNoteSuccess: "Notatka została dodana",
+      addNoteError: "Nie udało się zapisać notatki",
+      addNotePlaceholder: "Dodaj nową notatkę...",
+      status: "Status",
+      type: "Typ",
+      actions: "Akcje",
+      view: "Wyświetl",
+      clearSearch: "Wyczyść wyszukiwanie",
+      clearAllFilters: "Wyczyść wszystkie filtry",
+      sortBy: "Sortuj według"
+    },
+
+    // Dashboard
+    dashboard: {
+      title: "Panel główny",
+      subtitle: "Przegląd twoich projektów i zadań",
+      totalProjects: "Wszystkie projekty",
+      activeProjects: "Aktywne projekty", 
+      completedProjects: "Ukończone projekty",
+      overdueProjects: "Przeterminowane projekty",
+      totalContracts: "Wszystkie umowy",
+      activeContracts: "Aktywne umowy",
+      pendingTasks: "Oczekujące zadania",
+      inProgressTasks: "Zadania w trakcie",
+      completedTasks: "Ukończone zadania",
+      overdueTasks: "Przeterminowane zadania",
+      recentProjects: "Najnowsze projekty",
+      recentTasks: "Najnowsze zadania",
+      upcomingDeadlines: "Nadchodzące terminy",
+      projectsThisWeek: "Projekty w tym tygodniu",
+      tasksThisWeek: "Zadania w tym tygodniu",
+      completionRate: "Wskaźnik ukończenia",
+      viewAll: "Zobacz wszystkie",
+      noRecentProjects: "Brak najnowszych projektów",
+      noRecentTasks: "Brak najnowszych zadań",
+      noUpcomingDeadlines: "Brak nadchodzących terminów"
+    },
+
+    // Project statuses
+    projectStatus: {
+      registered: "Zarejestrowany",
+      in_progress_design: "W realizacji (projektowanie)",
+      in_progress_construction: "W realizacji (realizacja)",
+      fulfilled: "Zakończony",
+      cancelled: "Wycofany",
+      unknown: "Nieznany"
+    },
+
+    // Project types
+    projectType: {
+      design: "Projektowanie",
+      construction: "Realizacja", 
+      "design+construction": "Projektowanie + Realizacja"
+    },
+
+    // Task statuses
+    taskStatus: {
+      pending: "Oczekujące",
+      in_progress: "W trakcie",
+      completed: "Ukończone",
+      cancelled: "Anulowane",
+      on_hold: "Wstrzymane"
+    },
+
+    // Projects
+    projects: {
+      title: "Projekty",
+      subtitle: "---",
+      newProject: "Nowy projekt",
+      editProject: "Edytuj projekt",
+      deleteProject: "Usuń projekt",
+      projectName: "Nazwa projektu",
+      city: "Miasto",
+      address: "Adres",
+      plot: "Działka",
+      district: "Jednostka ewidencyjna",
+      unit: "Obręb",
+      finishDate: "Data zakończenia",
+      type: "Typ",
+      contact: "Kontakt",
+      coordinates: "Współrzędne",
+      notes: "Notatki",
+      assignedTo: "Przypisane do",
+      unassigned: "Nieprzypisane",
+      createdBy: "Utworzone przez",
+      lastModified: "Ostatnia modyfikacja",
+      basicInformation: "Informacje podstawowe",
+      locationDetails: "Szczegóły lokalizacji",
+      projectDetails: "Szczegóły projektu",
+      additionalInfo: "Dodatkowe informacje",
+      searchPlaceholder: "Szukaj projektów po nazwie, mieście lub adresie...",
+      noProjects: "Brak projektów",
+      noProjectsMessage: "Rozpocznij od utworzenia swojego pierwszego projektu.",
+      notFinished: "Nie zakończone",
+      projects: "projektów",
+      mapView: "Widok mapy",
+      createFirstProject: "Utwórz pierwszy projekt",
+      noMatchingResults: "Brak projektów pasujących do kryteriów wyszukiwania. Spróbuj zmienić wyszukiwane frazy.",
+      showingResults: "Wyświetlono {shown} z {total} projektów",
+      deleteConfirm: "Czy na pewno chcesz usunąć ten projekt?",
+      deleteSuccess: "Projekt został pomyślnie usunięty",
+      createSuccess: "Projekt został pomyślnie utworzony", 
+      updateSuccess: "Projekt został pomyślnie zaktualizowany",
+      saveError: "Nie udało się zapisać projektu",
+      enterProjectName: "Wprowadź nazwę projektu",
+      enterCity: "Wprowadź miasto",
+      enterAddress: "Wprowadź adres",
+      enterPlotNumber: "Wprowadź numer działki",
+      enterDistrict: "Wprowadź jednostkę ewidencyjną",
+      enterUnit: "Wprowadź obręb",
+      enterContactDetails: "Wprowadź dane kontaktowe",
+      coordinatesPlaceholder: "np. 49.622958,20.629562",
+      enterNotes: "Wprowadź notatki...",
+      createProject: "Utwórz projekt",
+      updateProject: "Aktualizuj projekt",
+      creating: "Tworzenie...",
+      updating: "Aktualizowanie...",
+      projectDetails: "Szczegóły projektu",
+      editProjectDetails: "Edytuj szczegóły projektu",
+      contract: "Umowa",
+      selectContract: "Wybierz umowę",
+      investmentNumber: "Numer inwestycji",
+      enterInvestmentNumber: "Wprowadź numer inwestycji",
+      enterWP: "Wprowadź WP",
+      placeholders: {
+        contact: "Wprowadź dane kontaktowe",
+        coordinates: "np. 49.622958,20.629562",
+        notes: "Wprowadź notatki...",
+        investmentNumber: "Wprowadź numer inwestycji",
+        wp: "Wprowadź WP"
+      }
+    },
+
+    // Contracts
+    contracts: {
+      title: "Umowy",
+      subtitle: "---",
+      newContract: "Nowa umowa",
+      editContract: "Edytuj umowę",
+      deleteContract: "Usuń umowę",
+      contractNumber: "Numer umowy",
+      contractName: "Nazwa umowy",
+      customerContractNumber: "Numer umowy klienta",
+      customer: "Klient",
+      investor: "Inwestor",
+      dateSigned: "Data zawarcia",
+      finishDate: "Data zakończenia",
+      searchPlaceholder: "Szukaj umów po numerze, nazwie, kliencie lub inwestorze...",
+      noContracts: "Brak umów",
+      noContractsMessage: "Rozpocznij od utworzenia swojej pierwszej umowy.",
+      noMatchingContracts: "Brak pasujących umów", 
+      changeSearchCriteria: "Spróbuj zmienić kryteria wyszukiwania lub filtry.",
+      all: "Wszystkie",
+      active: "Aktywne", 
+      withoutEndDate: "W trakcie",
+      expired: "Przeterminowane",
+      createContract: "Utwórz umowę",
+      enterContractNumber: "Wprowadź numer umowy",
+      enterContractName: "Wprowadź nazwę umowy",
+      enterCustomerContractNumber: "Wprowadź numer umowy klienta",
+      enterCustomerName: "Wprowadź nazwę klienta",
+      enterInvestorName: "Wprowadź nazwę inwestora",
+      signedOn: "Zawarcie:",
+      finishOn: "Zakończenie:",
+      customerLabel: "Zleceniodawca:",
+      investorLabel: "Inwestor:"
+    },
+
+    // Tasks
+    tasks: {
+      title: "Zadania",
+      task: "zadanie",
+      tasks: "zadania",
+      subtitle: "Zarządzaj zadaniami projektów",
+      newTask: "Nowe zadanie",
+      editTask: "Edytuj zadanie",
+      deleteTask: "Usuń zadanie",
+      taskName: "Nazwa zadania",
+      description: "Opis",
+      priority: "Priorytet",
+      assignedTo: "Przypisane do",
+      dueDate: "Termin wykonania",
+      status: "Status",
+      project: "Projekt",
+      template: "Szablon",
+      searchPlaceholder: "Szukaj zadań, projektów, miast lub adresów...",
+      noTasks: "Brak zadań",
+      noTasksMessage: "Brak zadań przypisanych do tego projektu.",
+      addTaskMessage: "Dodaj zadanie powyżej, aby rozpocząć.",
+      filterBy: "Filtruj według",
+      sortBy: "Sortuj według",
+      allTasks: "Wszystkie zadania",
+      myTasks: "Moje zadania",
+      overdue: "Przeterminowane",
+      dueSoon: "Niedługo termin",
+      high: "Wysoki",
+      normal: "Normalny",
+      medium: "Średni",
+      low: "Niski",
+      dateCreated: "Data utworzenia",
+      dateModified: "Data modyfikacji",
+      daysLeft: "dni pozostało",
+      daysOverdue: "dni przeterminowane",
+      dueToday: "Termin dzisiaj",
+      startTask: "Rozpocznij zadanie",
+      completeTask: "Zakończ zadanie",
+      comments: "Komentarze",
+      addComment: "Dodaj komentarz",
+      noComments: "Brak komentarzy",
+      maxWait: "Maksymalne oczekiwanie",
+      dateStarted: "Data rozpoczęcia",
+      actions: "Działania",
+      urgent: "Pilne",
+      updateTask: "Aktualizuj zadanie",
+      taskType: "Typ zadania",
+      fromTemplate: "Z szablonu",
+      customTask: "Zadanie niestandardowe",
+      selectTemplate: "Wybierz szablon zadania",
+      chooseTemplate: "Wybierz szablon zadania...",
+      enterTaskName: "Wprowadź nazwę zadania...",
+      enterDescription: "Wprowadź opis zadania (opcjonalnie)...",
+      addTask: "Dodaj zadanie",
+      adding: "Dodawanie...",
+      addTaskError: "Nie udało się dodać zadania do projektu",
+      notes: "notatki", 
+      deleteNote: "Usuń notatkę",
+      deleteError: "Błąd usuwania zadania",
+      notStarted: "Nie rozpoczęte",
+      days: "dni"
+    },
+
+    // Task Templates
+    taskTemplates: {
+      title: "Szablony zadań",
+      subtitle: "Zarządzaj szablonami zadań",
+      newTemplate: "Nowy szablon",
+      editTemplate: "Edytuj szablon",
+      deleteTemplate: "Usuń szablon",
+      templateName: "Nazwa szablonu",
+      templateDescription: "Opis szablonu",
+      defaultPriority: "Domyślny priorytet",
+      estimatedDuration: "Szacowany czas trwania",
+      category: "Kategoria",
+      searchPlaceholder: "Szukaj szablonów...",
+      noTemplates: "Brak szablonów",
+      noTemplatesMessage: "Rozpocznij od utworzenia swojego pierwszego szablonu zadania.",
+      useTemplate: "Użyj szablonu",
+      duplicateTemplate: "Duplikuj szablon"
+    },
+
+    // Forms
+    forms: {
+      validation: {
+        required: "To pole jest wymagane",
+        email: "Wprowadź prawidłowy adres email",
+        minLength: "Minimalna długość: {min} znaków",
+        maxLength: "Maksymalna długość: {max} znaków",
+        invalidDate: "Nieprawidłowa data",
+        invalidCoordinates: "Nieprawidłowe współrzędne"
+      },
+      placeholders: {
+        enterText: "Wprowadź tekst...",
+        selectDate: "Wybierz datę",
+        selectOption: "Wybierz opcję",
+        searchResults: "Szukaj wyników..."
+      }
+    },
+
+    // Sorting and filtering
+    sorting: {
+      sortBy: "Sortuj według",
+      orderBy: "Kolejność", 
+      ascending: "Rosnąco",
+      descending: "Malejąco",
+      name: "Nazwa",
+      date: "Data",
+      status: "Status",
+      priority: "Priorytet",
+      dateCreated: "Data utworzenia",
+      dateModified: "Data modyfikacji",
+      startDate: "Data rozpoczęcia",
+      finishDate: "Data zakończenia"
+    },
+
+    // Date formats
+    dates: {
+      today: "Dzisiaj",
+      yesterday: "Wczoraj", 
+      tomorrow: "Jutro",
+      daysAgo: "{count} dni temu",
+      inDays: "za {count} dni",
+      invalidDate: "Nieprawidłowa data",
+      selectDate: "Wybierz datę"
+    },
+
+    // Map layers
+    mapLayers: {
+      polishOrthophoto: "🛰️ Polska Ortofotomapa",
+      polishCadastral: "📋 Polskie Dane Katastralne",
+      polishSpatialPlanning: "🏗️ Polskie Planowanie Przestrzenne", 
+      lpPortalRoads: "🛣️ LP-Portal Drogi",
+      lpPortalStreetNames: "🏷️ LP-Portal Nazwy Ulic",
+      lpPortalParcels: "📐 LP-Portal Działki",
+      lpPortalSurveyMarkers: "📍 LP-Portal Punkty Pomiarowe",
+      openStreetMap: "🗺️ OpenStreetMap",
+      googleSatellite: "🛰️ Google Satelita",
+      googleRoads: "🛣️ Google Drogi",
+      layerControl: "Kontrola warstw",
+      baseLayers: "Warstwy bazowe",
+      overlayLayers: "Warstwy nakładkowe",
+      opacity: "Przezroczystość"
+    },
+
+    // Authentication
+    auth: {
+      signIn: "Zaloguj się",
+      signOut: "Wyloguj się",
+      email: "Email",
+      password: "Hasło",
+      rememberMe: "Zapamiętaj mnie",
+      forgotPassword: "Zapomniałeś hasła?",
+      signInWith: "Zaloguj się przez",
+      signUp: "Zarejestruj się",
+      createAccount: "Utwórz konto",
+      alreadyHaveAccount: "Masz już konto?",
+      dontHaveAccount: "Nie masz konta?",
+      signInError: "Błąd logowania",
+      signOutError: "Błąd wylogowania",
+      emailRequired: "Email jest wymagany",
+      passwordRequired: "Hasło jest wymagane",
+      invalidCredentials: "Nieprawidłowe dane logowania"
+    },
+
+    // User roles
+    userRoles: {
+      admin: "Administrator",
+      user: "Użytkownik",
+      manager: "Menedżer",
+      viewer: "Czytelnik"
+    },
+
+    // Error messages
+    errors: {
+      generic: "Wystąpił błąd. Spróbuj ponownie.",
+      network: "Błąd połączenia sieciowego",
+      unauthorized: "Brak autoryzacji",
+      forbidden: "Brak uprawnień",
+      notFound: "Nie znaleziono",
+      validation: "Błąd walidacji danych",
+      server: "Błąd serwera",
+      timeout: "Przekroczono limit czasu",
+      unknown: "Nieznany błąd"
+    },
+
+    // Success messages
+    success: {
+      saved: "Zapisano pomyślnie",
+      created: "Utworzono pomyślnie", 
+      updated: "Zaktualizowano pomyślnie",
+      deleted: "Usunięto pomyślnie",
+      sent: "Wysłano pomyślnie",
+      completed: "Ukończono pomyślnie"
+    },
+
+    // Admin section
+    admin: {
+      title: "Administracja",
+      subtitle: "Zarządzaj użytkownikami systemu i uprawnieniami",
+      userManagement: "Zarządzanie użytkownikami",
+      auditLogs: "Logi audytu",
+      systemSettings: "Ustawienia systemu",
+      users: "Użytkownicy",
+      newUser: "Nowy użytkownik",
+      editUser: "Edytuj użytkownika",
+      deleteUser: "Usuń użytkownika",
+      userName: "Nazwa użytkownika",
+      userEmail: "Email użytkownika",
+      userRole: "Rola użytkownika",
+      active: "Aktywny",
+      inactive: "Nieaktywny",
+      lastLogin: "Ostatnie logowanie",
+      createdAt: "Data utworzenia",
+      noUsers: "Brak użytkowników",
+      system: "System"
+    }
+  },
+  
+  en: {
+    // English translations (fallback)
+    navigation: {
+      dashboard: "Dashboard",
+      projects: "Projects",
+      taskTemplates: "Task Templates", 
+      projectTasks: "Project Tasks",
+      contracts: "Contracts",
+      userManagement: "User Management",
+      projectPanel: "Project Panel",
+      loading: "Loading...",
+      signOut: "Sign Out",
+      signIn: "Sign In"
+    },
+    
+    common: {
+      save: "Save",
+      cancel: "Cancel",
+      delete: "Delete",
+      edit: "Edit",
+      add: "Add",
+      create: "Create",
+      update: "Update",
+      search: "Search",
+      filter: "Filter",
+      loading: "Loading...",
+      saving: "Saving...",
+      creating: "Creating...",
+      updating: "Updating...",
+      yes: "Yes",
+      no: "No", 
+      confirm: "Confirm",
+      close: "Close",
+      back: "Back",
+      next: "Next",
+      previous: "Previous",
+      page: "Page",
+      of: "of",
+      items: "items",
+      all: "All",
+      none: "None",
+      required: "required",
+      optional: "optional",
+      selectOption: "Select option",
+      selectLanguage: "Select language",
+      noResults: "No results",
+      error: "Error",
+      success: "Success",
+      warning: "Warning",
+      info: "Info",
+      deleteConfirm: "Are you sure you want to delete this?",
+      addNote: "Add Note",
+      addNoteSuccess: "Note added",
+      addNoteError: "Failed to save note",
+      addNotePlaceholder: "Add a new note...",
+      status: "Status",
+      type: "Type", 
+      actions: "Actions",
+      view: "View",
+      clearSearch: "Clear search",
+      clearAllFilters: "Clear all filters",
+      sortBy: "Sort by"
+    },
+
+    dashboard: {
+      title: "Dashboard",
+      subtitle: "Overview of your projects and tasks",
+      totalProjects: "Total Projects",
+      activeProjects: "Active Projects",
+      completedProjects: "Completed Projects", 
+      overdueProjects: "Overdue Projects",
+      totalContracts: "Total Contracts",
+      activeContracts: "Active Contracts",
+      pendingTasks: "Pending Tasks",
+      inProgressTasks: "In Progress Tasks",
+      completedTasks: "Completed Tasks",
+      overdueTasks: "Overdue Tasks",
+      recentProjects: "Recent Projects",
+      recentTasks: "Recent Tasks",
+      upcomingDeadlines: "Upcoming Deadlines",
+      projectsThisWeek: "Projects This Week",
+      tasksThisWeek: "Tasks This Week",
+      completionRate: "Completion Rate",
+      viewAll: "View All",
+      noRecentProjects: "No recent projects",
+      noRecentTasks: "No recent tasks",
+      noUpcomingDeadlines: "No upcoming deadlines"
+    },
+
+    projectStatus: {
+      registered: "Registered",
+      in_progress_design: "In Progress (Design)",
+      in_progress_construction: "In Progress (Construction)",
+      fulfilled: "Completed",
+      cancelled: "Cancelled",
+      unknown: "Unknown"
+    },
+
+    projectType: {
+      design: "Design",
+      construction: "Construction",
+      "design+construction": "Design + Construction"
+    },
+
+    taskStatus: {
+      pending: "Pending",
+      in_progress: "In Progress",
+      completed: "Completed",
+      cancelled: "Cancelled",
+      on_hold: "On Hold"
+    },
+
+    projects: {
+      title: "Projects",
+      subtitle: "Manage your projects",
+      newProject: "New Project",
+      editProject: "Edit Project",
+      deleteProject: "Delete Project",
+      projectName: "Project Name",
+      city: "City",
+      address: "Address",
+      plot: "Plot",
+      district: "District",
+      unit: "Unit",
+      finishDate: "Finish Date",
+      type: "Type",
+      contact: "Contact",
+      coordinates: "Coordinates",
+      notes: "Notes",
+      assignedTo: "Assigned To",
+      unassigned: "Unassigned",
+      createdBy: "Created By",
+      lastModified: "Last Modified",
+      basicInformation: "Basic Information",
+      locationDetails: "Location Details",
+      projectDetails: "Project Details",
+      additionalInfo: "Additional Information",
+      searchPlaceholder: "Search projects by name, city or address...",
+      noProjects: "No projects",
+      noProjectsMessage: "Get started by creating your first project.",
+      notFinished: "Not finished",
+      projects: "projects", 
+      mapView: "Map View",
+      createFirstProject: "Create first project",
+      noMatchingResults: "No projects match the search criteria. Try changing your search terms.",
+      showingResults: "Showing {shown} of {total} projects",
+      deleteConfirm: "Are you sure you want to delete this project?",
+      deleteSuccess: "Project deleted successfully",
+      createSuccess: "Project created successfully",
+      updateSuccess: "Project updated successfully",
+      saveError: "Failed to save project",
+      enterProjectName: "Enter project name",
+      enterCity: "Enter city",
+      enterAddress: "Enter address",
+      enterPlotNumber: "Enter plot number",
+      enterDistrict: "Enter district",
+      enterUnit: "Enter unit",
+      enterContactDetails: "Enter contact details",
+      coordinatesPlaceholder: "e.g., 49.622958,20.629562",
+      enterNotes: "Enter notes...",
+      createProject: "Create Project",
+      updateProject: "Update Project", 
+      creating: "Creating...",
+      updating: "Updating...",
+      projectDetails: "Project Details",
+      editProjectDetails: "Edit Project Details",
+      contract: "Contract",
+      selectContract: "Select Contract",
+      investmentNumber: "Investment Number",
+      enterInvestmentNumber: "Enter investment number",
+      enterWP: "Enter WP",
+      placeholders: {
+        contact: "Enter contact details",
+        coordinates: "e.g., 49.622958,20.629562",
+        notes: "Enter notes...",
+        investmentNumber: "Enter investment number",
+        wp: "Enter WP"
+      }
+    },
+
+    contracts: {
+      title: "Contracts",
+      subtitle: "Manage your contracts and agreements",
+      newContract: "New Contract",
+      editContract: "Edit Contract",
+      deleteContract: "Delete Contract",
+      contractNumber: "Contract Number",
+      contractName: "Contract Name",
+      customerContractNumber: "Customer Contract Number",
+      customer: "Customer",
+      investor: "Investor",
+      dateSigned: "Date Signed",
+      finishDate: "Finish Date",
+      searchPlaceholder: "Search contracts by number, name, customer or investor...",
+      noContracts: "No contracts",
+      noContractsMessage: "Get started by creating your first contract.",
+      noMatchingContracts: "No matching contracts",
+      changeSearchCriteria: "Try changing your search criteria or filters.",
+      all: "All",
+      active: "Active",
+      withoutEndDate: "In Progress",
+      expired: "Expired",
+      createContract: "Create Contract",
+      enterContractNumber: "Enter contract number",
+      enterContractName: "Enter contract name",
+      enterCustomerContractNumber: "Enter customer contract number",
+      enterCustomerName: "Enter customer name",
+      enterInvestorName: "Enter investor name",
+      signedOn: "Signed:",
+      finishOn: "Finish:",
+      customerLabel: "Customer:",
+      investorLabel: "Investor:"
+    },
+
+    tasks: {
+      title: "Tasks",
+      task: "task",
+      tasks: "tasks",
+      subtitle: "Manage project tasks",
+      newTask: "New Task",
+      editTask: "Edit Task",
+      deleteTask: "Delete Task",
+      taskName: "Task Name",
+      description: "Description",
+      priority: "Priority",
+      assignedTo: "Assigned To",
+      dueDate: "Due Date",
+      status: "Status",
+      project: "Project",
+      template: "Template",
+      searchPlaceholder: "Search tasks, projects, city, or address...",
+      noTasks: "No tasks",
+      noTasksMessage: "No tasks assigned to this project yet.",
+      addTaskMessage: "Add a task above to get started.",
+      filterBy: "Filter by",
+      sortBy: "Sort by",
+      allTasks: "All Tasks",
+      myTasks: "My Tasks",
+      overdue: "Overdue",
+      dueSoon: "Due Soon",
+      high: "High",
+      normal: "Normal", 
+      medium: "Medium",
+      low: "Low",
+      dateCreated: "Date Created",
+      dateModified: "Date Modified",
+      daysLeft: "days left",
+      daysOverdue: "days overdue",
+      dueToday: "Due Today",
+      startTask: "Start Task",
+      completeTask: "Complete Task",
+      comments: "Comments",
+      addComment: "Add Comment",
+      noComments: "No comments",
+      maxWait: "Max Wait",
+      dateStarted: "Date Started",
+      actions: "Actions",
+      urgent: "Urgent",
+      updateTask: "Update Task",
+      taskType: "Task Type",
+      fromTemplate: "From Template",
+      customTask: "Custom Task",
+      selectTemplate: "Select Task Template",
+      chooseTemplate: "Choose a task template...",
+      enterTaskName: "Enter custom task name...",
+      enterDescription: "Enter task description (optional)...",
+      addTask: "Add Task",
+      adding: "Adding...",
+      addTaskError: "Failed to add task to project",
+      notes: "notes",
+      deleteNote: "Delete note", 
+      deleteError: "Error deleting task",
+      notStarted: "Not started",
+      days: "days"
+    },
+
+    taskTemplates: {
+      title: "Task Templates",
+      subtitle: "Manage task templates",
+      newTemplate: "New Template",
+      editTemplate: "Edit Template",
+      deleteTemplate: "Delete Template",
+      templateName: "Template Name",
+      templateDescription: "Template Description",
+      defaultPriority: "Default Priority",
+      estimatedDuration: "Estimated Duration",
+      category: "Category",
+      searchPlaceholder: "Search templates...",
+      noTemplates: "No templates",
+      noTemplatesMessage: "Get started by creating your first task template.",
+      useTemplate: "Use Template",
+      duplicateTemplate: "Duplicate Template"
+    },
+
+    forms: {
+      validation: {
+        required: "This field is required",
+        email: "Please enter a valid email address",
+        minLength: "Minimum length: {min} characters",
+        maxLength: "Maximum length: {max} characters",
+        invalidDate: "Invalid date",
+        invalidCoordinates: "Invalid coordinates"
+      },
+      placeholders: {
+        enterText: "Enter text...",
+        selectDate: "Select date",
+        selectOption: "Select option",
+        searchResults: "Search results..."
+      }
+    },
+
+    sorting: {
+      sortBy: "Sort by",
+      orderBy: "Order by",
+      ascending: "Ascending",
+      descending: "Descending",
+      name: "Name",
+      date: "Date",
+      status: "Status",
+      priority: "Priority",
+      dateCreated: "Date Created",
+      dateModified: "Date Modified",
+      startDate: "Start Date",
+      finishDate: "Finish Date"
+    },
+
+    dates: {
+      today: "Today",
+      yesterday: "Yesterday",
+      tomorrow: "Tomorrow",
+      daysAgo: "{count} days ago",
+      inDays: "in {count} days",
+      invalidDate: "Invalid date",
+      selectDate: "Select date"
+    },
+
+    mapLayers: {
+      polishOrthophoto: "🛰️ Polish Orthophoto",
+      polishCadastral: "📋 Polish Cadastral Data",
+      polishSpatialPlanning: "🏗️ Polish Spatial Planning",
+      lpPortalRoads: "🛣️ LP-Portal Roads",
+      lpPortalStreetNames: "🏷️ LP-Portal Street Names",
+      lpPortalParcels: "📐 LP-Portal Parcels",
+      lpPortalSurveyMarkers: "📍 LP-Portal Survey Markers",
+      openStreetMap: "🗺️ OpenStreetMap",
+      googleSatellite: "🛰️ Google Satellite",
+      googleRoads: "🛣️ Google Roads",
+      layerControl: "Layer Control",
+      baseLayers: "Base Layers",
+      overlayLayers: "Overlay Layers",
+      opacity: "Opacity"
+    },
+
+    auth: {
+      signIn: "Sign In",
+      signOut: "Sign Out",
+      email: "Email",
+      password: "Password",
+      rememberMe: "Remember Me",
+      forgotPassword: "Forgot Password?",
+      signInWith: "Sign in with",
+      signUp: "Sign Up",
+      createAccount: "Create Account",
+      alreadyHaveAccount: "Already have an account?",
+      dontHaveAccount: "Don't have an account?",
+      signInError: "Sign in error",
+      signOutError: "Sign out error",
+      emailRequired: "Email is required",
+      passwordRequired: "Password is required",
+      invalidCredentials: "Invalid credentials"
+    },
+
+    userRoles: {
+      admin: "Administrator",
+      user: "User", 
+      manager: "Manager",
+      viewer: "Viewer"
+    },
+
+    errors: {
+      generic: "An error occurred. Please try again.",
+      network: "Network connection error",
+      unauthorized: "Unauthorized",
+      forbidden: "Forbidden",
+      notFound: "Not found",
+      validation: "Validation error",
+      server: "Server error",
+      timeout: "Request timeout",
+      unknown: "Unknown error"
+    },
+
+    success: {
+      saved: "Saved successfully",
+      created: "Created successfully",
+      updated: "Updated successfully",
+      deleted: "Deleted successfully",
+      sent: "Sent successfully",
+      completed: "Completed successfully"
+    },
+
+    admin: {
+      title: "Administration",
+      userManagement: "User Management",
+      auditLogs: "Audit Logs",
+      systemSettings: "System Settings",
+      users: "Users",
+      newUser: "New User",
+      editUser: "Edit User",
+      deleteUser: "Delete User",
+      userName: "User Name",
+      userEmail: "User Email",
+      userRole: "User Role",
+      active: "Active",
+      inactive: "Inactive",
+      lastLogin: "Last Login",
+      createdAt: "Created At",
+      noUsers: "No users",
+      system: "System"
+    }
+  }
+};
+
+// Translation provider component
+export function TranslationProvider({ children, initialLanguage = 'pl' }) {
+  const [language, setLanguage] = useState(initialLanguage);
+
+  // Load language from localStorage on mount
+  useEffect(() => {
+    const savedLanguage = localStorage.getItem('app-language');
+    if (savedLanguage && translations[savedLanguage]) {
+      setLanguage(savedLanguage);
+    }
+  }, []);
+
+  // Save language to localStorage when changed
+  useEffect(() => {
+    localStorage.setItem('app-language', language);
+  }, [language]);
+
+  const changeLanguage = (newLanguage) => {
+    if (translations[newLanguage]) {
+      setLanguage(newLanguage);
+    }
+  };
+
+  const t = (key, replacements = {}) => {
+    const keys = key.split('.');
+    let value = translations[language];
+    
+    for (const k of keys) {
+      if (value && typeof value === 'object' && k in value) {
+        value = value[k];
+      } else {
+        // Fallback to English if key not found in current language
+        value = translations.en;
+        for (const fallbackKey of keys) {
+          if (value && typeof value === 'object' && fallbackKey in value) {
+            value = value[fallbackKey];
+          } else {
+            console.warn(`Translation key not found: ${key} (language: ${language})`);
+            return key; // Return the key itself as fallback
+          }
+        }
+        break;
+      }
+    }
+
+    if (typeof value !== 'string') {
+      console.warn(`Translation value is not a string: ${key} (language: ${language})`);
+      return key;
+    }
+
+    // Replace placeholders like {count}, {min}, {max}, etc.
+    let result = value;
+    Object.keys(replacements).forEach(placeholder => {
+      result = result.replace(new RegExp(`{${placeholder}}`, 'g'), replacements[placeholder]);
+    });
+
+    return result;
+  };
+
+  return (
+    <TranslationContext.Provider value={{ 
+      t, 
+      language, 
+      changeLanguage, 
+      availableLanguages: Object.keys(translations) 
+    }}>
+      {children}
+    </TranslationContext.Provider>
+  );
+}
+
+// Hook to use translations
+export function useTranslation() {
+  const context = useContext(TranslationContext);
+  if (!context) {
+    throw new Error('useTranslation must be used within a TranslationProvider');
+  }
+  return context;
+}
+
+// Export translations for direct access if needed
+export { translations };

src/lib/init-db.js

@@ -31,7 +31,7 @@ export default function initializeDatabase() {
       contact TEXT,
       notes TEXT,
       project_type TEXT CHECK(project_type IN ('design', 'construction', 'design+construction')) DEFAULT 'design',
-      project_status TEXT CHECK(project_status IN ('registered', 'in_progress_design', 'in_progress_construction', 'fulfilled')) DEFAULT 'registered',
+      project_status TEXT CHECK(project_status IN ('registered', 'in_progress_design', 'in_progress_construction', 'fulfilled', 'cancelled')) DEFAULT 'registered',
       FOREIGN KEY (contract_id) REFERENCES contracts(contract_id)
     );
 
@@ -113,7 +113,7 @@ export default function initializeDatabase() {
 	// Migration: Add project_status column to projects table
 	try {
 		db.exec(`
-      ALTER TABLE projects ADD COLUMN project_status TEXT CHECK(project_status IN ('registered', 'in_progress_design', 'in_progress_construction', 'fulfilled')) DEFAULT 'registered';
+      ALTER TABLE projects ADD COLUMN project_status TEXT CHECK(project_status IN ('registered', 'in_progress_design', 'in_progress_construction', 'fulfilled', 'cancelled')) DEFAULT 'registered';
     `);
 	} catch (e) {
 		// Column already exists, ignore error
@@ -273,7 +273,7 @@ export default function initializeDatabase() {
 		CREATE TABLE IF NOT EXISTS users (
 			id TEXT PRIMARY KEY DEFAULT (lower(hex(randomblob(16)))),
 			name TEXT NOT NULL,
-			email TEXT UNIQUE NOT NULL,
+			username TEXT UNIQUE NOT NULL,
 			password_hash TEXT NOT NULL,
 			role TEXT CHECK(role IN ('admin', 'project_manager', 'user', 'read_only')) DEFAULT 'user',
 			created_at TEXT DEFAULT CURRENT_TIMESTAMP,
@@ -309,9 +309,77 @@ export default function initializeDatabase() {
 		);
 
 		-- Create indexes for performance
-		CREATE INDEX IF NOT EXISTS idx_users_email ON users(email);
+		CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
 		CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(session_token);
 		CREATE INDEX IF NOT EXISTS idx_sessions_user ON sessions(user_id);
 		CREATE INDEX IF NOT EXISTS idx_audit_user_timestamp ON audit_logs(user_id, timestamp);
 	`);
+
+	// Migration: Add username column and migrate from email if needed
+	try {
+		// Check if username column exists
+		const columns = db.prepare("PRAGMA table_info(users)").all();
+		const hasUsername = columns.some(col => col.name === 'username');
+		const hasEmail = columns.some(col => col.name === 'email');
+
+		if (!hasUsername && hasEmail) {
+			// Add username column
+			db.exec(`ALTER TABLE users ADD COLUMN username TEXT;`);
+			
+			// Migrate existing email data to username (for development/testing)
+			// In production, you might want to handle this differently
+			db.exec(`UPDATE users SET username = email WHERE username IS NULL;`);
+			
+			// Create unique index on username
+			db.exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_users_username_unique ON users(username);`);
+			
+			console.log("✅ Migrated users table from email to username");
+		} else if (!hasUsername) {
+			// If neither username nor email exists, something is wrong
+			console.warn("⚠️  Users table missing both username and email columns");
+		}
+	} catch (e) {
+		console.warn("Migration warning:", e.message);
+	}
+
+	// Generic file attachments table
+	db.exec(`
+		CREATE TABLE IF NOT EXISTS file_attachments (
+			file_id INTEGER PRIMARY KEY AUTOINCREMENT,
+			entity_type TEXT NOT NULL CHECK(entity_type IN ('contract', 'project', 'task')),
+			entity_id INTEGER NOT NULL,
+			original_filename TEXT NOT NULL,
+			stored_filename TEXT NOT NULL,
+			file_path TEXT NOT NULL,
+			file_size INTEGER,
+			mime_type TEXT,
+			description TEXT,
+			uploaded_by TEXT,
+			upload_date TEXT DEFAULT CURRENT_TIMESTAMP,
+			FOREIGN KEY (uploaded_by) REFERENCES users(id)
+		);
+
+		-- Create indexes for file attachments
+		CREATE INDEX IF NOT EXISTS idx_file_attachments_entity ON file_attachments(entity_type, entity_id);
+		CREATE INDEX IF NOT EXISTS idx_file_attachments_uploaded_by ON file_attachments(uploaded_by);
+
+		-- Generic field change history table
+		CREATE TABLE IF NOT EXISTS field_change_history (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			table_name TEXT NOT NULL,
+			record_id INTEGER NOT NULL,
+			field_name TEXT NOT NULL,
+			old_value TEXT,
+			new_value TEXT,
+			changed_by INTEGER,
+			changed_at TEXT DEFAULT CURRENT_TIMESTAMP,
+			change_reason TEXT,
+			FOREIGN KEY (changed_by) REFERENCES users(id)
+		);
+
+		-- Create indexes for field change history
+		CREATE INDEX IF NOT EXISTS idx_field_history_table_record ON field_change_history(table_name, record_id);
+		CREATE INDEX IF NOT EXISTS idx_field_history_field ON field_change_history(table_name, record_id, field_name);
+		CREATE INDEX IF NOT EXISTS idx_field_history_changed_by ON field_change_history(changed_by);
+	`);
 }

src/lib/queries/fieldHistory.js

@@ -0,0 +1,94 @@
+import db from "../db.js";
+
+/**
+ * Log a field change to the history table
+ */
+export function logFieldChange(tableName, recordId, fieldName, oldValue, newValue, changedBy = null, reason = null) {
+	// Don't log if values are the same
+	if (oldValue === newValue) return null;
+
+	const stmt = db.prepare(`
+		INSERT INTO field_change_history 
+		(table_name, record_id, field_name, old_value, new_value, changed_by, change_reason)
+		VALUES (?, ?, ?, ?, ?, ?, ?)
+	`);
+
+	return stmt.run(
+		tableName,
+		recordId,
+		fieldName,
+		oldValue || null,
+		newValue || null,
+		changedBy,
+		reason
+	);
+}
+
+/**
+ * Get field change history for a specific field
+ */
+export function getFieldHistory(tableName, recordId, fieldName) {
+	const stmt = db.prepare(`
+		SELECT 
+			fch.*,
+			u.name as changed_by_name,
+			u.username as changed_by_username
+		FROM field_change_history fch
+		LEFT JOIN users u ON fch.changed_by = u.id
+		WHERE fch.table_name = ? AND fch.record_id = ? AND fch.field_name = ?
+		ORDER BY fch.changed_at DESC
+	`);
+
+	return stmt.all(tableName, recordId, fieldName);
+}
+
+/**
+ * Get all field changes for a specific record
+ */
+export function getAllFieldHistory(tableName, recordId) {
+	const stmt = db.prepare(`
+		SELECT 
+			fch.*,
+			u.name as changed_by_name,
+			u.username as changed_by_username
+		FROM field_change_history fch
+		LEFT JOIN users u ON fch.changed_by = u.id
+		WHERE fch.table_name = ? AND fch.record_id = ?
+		ORDER BY fch.changed_at DESC, fch.field_name ASC
+	`);
+
+	return stmt.all(tableName, recordId);
+}
+
+/**
+ * Check if a field has any change history
+ */
+export function hasFieldHistory(tableName, recordId, fieldName) {
+	const stmt = db.prepare(`
+		SELECT COUNT(*) as count
+		FROM field_change_history 
+		WHERE table_name = ? AND record_id = ? AND field_name = ?
+	`);
+
+	const result = stmt.get(tableName, recordId, fieldName);
+	return result.count > 0;
+}
+
+/**
+ * Get the most recent change for a field
+ */
+export function getLatestFieldChange(tableName, recordId, fieldName) {
+	const stmt = db.prepare(`
+		SELECT 
+			fch.*,
+			u.name as changed_by_name,
+			u.username as changed_by_username
+		FROM field_change_history fch
+		LEFT JOIN users u ON fch.changed_by = u.id
+		WHERE fch.table_name = ? AND fch.record_id = ? AND fch.field_name = ?
+		ORDER BY fch.changed_at DESC
+		LIMIT 1
+	`);
+
+	return stmt.get(tableName, recordId, fieldName);
+}

src/lib/queries/notes.js

@@ -6,7 +6,7 @@ export function getNotesByProjectId(project_id) {
 			`
 			SELECT n.*, 
 			       u.name as created_by_name,
-			       u.email as created_by_email
+			       u.username as created_by_username
 			FROM notes n
 			LEFT JOIN users u ON n.created_by = u.id
 			WHERE n.project_id = ? 
@@ -16,13 +16,13 @@ export function getNotesByProjectId(project_id) {
 		.all(project_id);
 }
 
-export function addNoteToProject(project_id, note, created_by = null) {
+export function addNoteToProject(project_id, note, created_by = null, is_system = false) {
 	db.prepare(
 		`
-		INSERT INTO notes (project_id, note, created_by, note_date) 
-		VALUES (?, ?, ?, CURRENT_TIMESTAMP)
+		INSERT INTO notes (project_id, note, created_by, is_system, note_date) 
+		VALUES (?, ?, ?, ?, CURRENT_TIMESTAMP)
 	`
-	).run(project_id, note, created_by);
+	).run(project_id, note, created_by, is_system ? 1 : 0);
 }
 
 export function getNotesByTaskId(task_id) {
@@ -31,7 +31,7 @@ export function getNotesByTaskId(task_id) {
 			`
 			SELECT n.*, 
 			       u.name as created_by_name,
-			       u.email as created_by_email
+			       u.username as created_by_username
 			FROM notes n
 			LEFT JOIN users u ON n.created_by = u.id
 			WHERE n.task_id = ? 
@@ -64,7 +64,7 @@ export function getAllNotesWithUsers() {
 			`
 			SELECT n.*,
 			       u.name as created_by_name,
-			       u.email as created_by_email,
+			       u.username as created_by_username,
 			       p.project_name,
 			       COALESCE(pt.custom_task_name, t.name) as task_name
 			FROM notes n
@@ -85,7 +85,7 @@ export function getNotesByCreator(userId) {
 			`
 			SELECT n.*,
 			       u.name as created_by_name,
-			       u.email as created_by_email,
+			       u.username as created_by_username,
 			       p.project_name,
 			       COALESCE(pt.custom_task_name, t.name) as task_name
 			FROM notes n

src/lib/queries/projects.js

@@ -4,11 +4,16 @@ export function getAllProjects(contractId = null) {
 	const baseQuery = `
 		SELECT 
 			p.*,
+			c.contract_number, 
+			c.contract_name, 
+			c.customer,
+			c.investor,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM projects p
+		LEFT JOIN contracts c ON p.contract_id = c.contract_id
 		LEFT JOIN users creator ON p.created_by = creator.id
 		LEFT JOIN users assignee ON p.assigned_to = assignee.id
 	`;
@@ -30,9 +35,9 @@ export function getProjectById(id) {
 		SELECT 
 			p.*,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM projects p
 		LEFT JOIN users creator ON p.created_by = creator.id
 		LEFT JOIN users assignee ON p.assigned_to = assignee.id
@@ -105,7 +110,7 @@ export function updateProject(id, data, userId = null) {
       coordinates = ?, assigned_to = ?, updated_at = CURRENT_TIMESTAMP
     WHERE project_id = ?
   `);
-	stmt.run(
+	const result = stmt.run(
 		data.contract_id,
 		data.project_name,
 		data.project_number,
@@ -125,6 +130,9 @@ export function updateProject(id, data, userId = null) {
 		data.assigned_to || null,
 		id
 	);
+	
+	console.log('Update result:', result);
+	return result;
 }
 
 export function deleteProject(id) {
@@ -136,7 +144,7 @@ export function getAllUsersForAssignment() {
 	return db
 		.prepare(
 			`
-		SELECT id, name, email, role 
+		SELECT id, name, username, role 
 		FROM users 
 		WHERE is_active = 1 
 		ORDER BY name
@@ -153,9 +161,9 @@ export function getProjectsByAssignedUser(userId) {
 		SELECT 
 			p.*,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM projects p
 		LEFT JOIN users creator ON p.created_by = creator.id
 		LEFT JOIN users assignee ON p.assigned_to = assignee.id
@@ -174,9 +182,9 @@ export function getProjectsByCreator(userId) {
 		SELECT 
 			p.*,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM projects p
 		LEFT JOIN users creator ON p.created_by = creator.id
 		LEFT JOIN users assignee ON p.assigned_to = assignee.id
@@ -224,7 +232,7 @@ export function getNotesForProject(projectId) {
 			`
 	  SELECT n.*, 
 	         u.name as created_by_name,
-	         u.email as created_by_email
+	         u.username as created_by_username
 	  FROM notes n
 	  LEFT JOIN users u ON n.created_by = u.id
 	  WHERE n.project_id = ?
@@ -233,3 +241,39 @@ export function getNotesForProject(projectId) {
 		)
 		.all(projectId);
 }
+
+// Get finish date update history for a project
+export function getFinishDateUpdates(projectId) {
+	return db
+		.prepare(
+			`
+	  SELECT fdu.*, 
+	         u.name as updated_by_name,
+	         u.username as updated_by_username
+	  FROM project_finish_date_updates fdu
+	  LEFT JOIN users u ON fdu.updated_by = u.id
+	  WHERE fdu.project_id = ?
+	  ORDER BY fdu.updated_at DESC
+	`
+		)
+		.all(projectId);
+}
+
+// Log a finish date update
+export function logFinishDateUpdate(projectId, oldDate, newDate, userId, reason = null) {
+	const stmt = db.prepare(`
+		INSERT INTO project_finish_date_updates (
+			project_id, old_finish_date, new_finish_date, updated_by, reason, updated_at
+		) VALUES (?, ?, ?, ?, ?, CURRENT_TIMESTAMP)
+	`);
+	
+	return stmt.run(projectId, oldDate, newDate, userId, reason);
+}
+
+// Check if project has finish date updates
+export function hasFinishDateUpdates(projectId) {
+	const result = db
+		.prepare('SELECT COUNT(*) as count FROM project_finish_date_updates WHERE project_id = ?')
+		.get(projectId);
+	return result.count > 0;
+}

src/lib/queries/tasks.js

@@ -1,5 +1,6 @@
 import db from "../db.js";
 import { addNoteToTask } from "./notes.js";
+import { getUserLanguage, serverT, translateStatus, translatePriority } from "../serverTranslations.js";
 
 // Get all task templates (for dropdown selection)
 export function getAllTaskTemplates() {
@@ -29,9 +30,9 @@ export function getAllProjectTasks() {
 			p.address,
 			p.finish_date,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM project_tasks pt
 		LEFT JOIN tasks t ON pt.task_template_id = t.task_id
 		LEFT JOIN projects p ON pt.project_id = p.project_id
@@ -58,9 +59,9 @@ export function getProjectTasks(projectId) {
 				ELSE 'custom'
 			END as task_type,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM project_tasks pt
 		LEFT JOIN tasks t ON pt.task_template_id = t.task_id
 		LEFT JOIN users creator ON pt.created_by = creator.id
@@ -182,8 +183,10 @@ export function updateProjectTaskStatus(taskId, status, userId = null) {
 
 	// Add system note for status change (only if status actually changed)
 	if (result.changes > 0 && oldStatus !== status) {
-		const taskName = currentTask.task_name || "Unknown task";
-		const logMessage = `Status changed from "${oldStatus}" to "${status}"`;
+		const language = getUserLanguage(); // Default to Polish for now
+		const fromStatus = translateStatus(oldStatus, language);
+		const toStatus = translateStatus(status, language);
+		const logMessage = `${serverT("Status changed from", language)} "${fromStatus}" ${serverT("to", language)} "${toStatus}"`;
 		addNoteToTask(taskId, logMessage, true, userId);
 	}
 
@@ -192,8 +195,13 @@ export function updateProjectTaskStatus(taskId, status, userId = null) {
 
 // Delete a project task
 export function deleteProjectTask(taskId) {
-	const stmt = db.prepare("DELETE FROM project_tasks WHERE id = ?");
-	return stmt.run(taskId);
+	// First delete all related task notes
+	const deleteNotesStmt = db.prepare("DELETE FROM notes WHERE task_id = ?");
+	deleteNotesStmt.run(taskId);
+
+	// Then delete the task itself
+	const deleteTaskStmt = db.prepare("DELETE FROM project_tasks WHERE id = ?");
+	return deleteTaskStmt.run(taskId);
 }
 
 // Get project tasks assigned to a specific user
@@ -217,9 +225,9 @@ export function getProjectTasksByAssignedUser(userId) {
 			p.address,
 			p.finish_date,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM project_tasks pt
 		LEFT JOIN tasks t ON pt.task_template_id = t.task_id
 		LEFT JOIN projects p ON pt.project_id = p.project_id
@@ -253,9 +261,9 @@ export function getProjectTasksByCreator(userId) {
 			p.address,
 			p.finish_date,
 			creator.name as created_by_name,
-			creator.email as created_by_email,
+			creator.username as created_by_username,
 			assignee.name as assigned_to_name,
-			assignee.email as assigned_to_email
+			assignee.username as assigned_to_username
 		FROM project_tasks pt
 		LEFT JOIN tasks t ON pt.task_template_id = t.task_id
 		LEFT JOIN projects p ON pt.project_id = p.project_id
@@ -283,7 +291,7 @@ export function getAllUsersForTaskAssignment() {
 	return db
 		.prepare(
 			`
-		SELECT id, name, email, role 
+		SELECT id, name, username, role 
 		FROM users 
 		WHERE is_active = 1 
 		ORDER BY name ASC
@@ -291,3 +299,114 @@ export function getAllUsersForTaskAssignment() {
 		)
 		.all();
 }
+
+// Update project task (general update for edit modal)
+export function updateProjectTask(taskId, updates, userId = null) {
+	// Get current task for logging
+	const getCurrentTask = db.prepare(`
+		SELECT 
+			pt.*,
+			COALESCE(pt.custom_task_name, t.name) as task_name
+		FROM project_tasks pt
+		LEFT JOIN tasks t ON pt.task_template_id = t.task_id
+		WHERE pt.id = ?
+	`);
+	const currentTask = getCurrentTask.get(taskId);
+
+	if (!currentTask) {
+		throw new Error(`Task with ID ${taskId} not found`);
+	}
+
+	// Build dynamic update query
+	const fields = [];
+	const values = [];
+
+	if (updates.priority !== undefined) {
+		fields.push("priority = ?");
+		values.push(updates.priority);
+	}
+
+	if (updates.status !== undefined) {
+		fields.push("status = ?");
+		values.push(updates.status);
+
+		// Handle status-specific timestamp updates
+		if (currentTask.status === "pending" && updates.status === "in_progress") {
+			fields.push("date_started = CURRENT_TIMESTAMP");
+		} else if (updates.status === "completed") {
+			fields.push("date_completed = CURRENT_TIMESTAMP");
+		}
+	}
+
+	if (updates.assigned_to !== undefined) {
+		fields.push("assigned_to = ?");
+		values.push(updates.assigned_to || null);
+	}
+
+	if (updates.date_started !== undefined) {
+		fields.push("date_started = ?");
+		values.push(updates.date_started || null);
+	}
+
+	// Always update the updated_at timestamp
+	fields.push("updated_at = CURRENT_TIMESTAMP");
+	values.push(taskId);
+
+	const stmt = db.prepare(`
+		UPDATE project_tasks 
+		SET ${fields.join(", ")}
+		WHERE id = ?
+	`);
+
+	const result = stmt.run(...values);
+
+	// Log the update
+	if (userId) {
+		const language = getUserLanguage(); // Default to Polish for now
+		const changes = [];
+		
+		if (
+			updates.priority !== undefined &&
+			updates.priority !== currentTask.priority
+		) {
+			const oldPriority = translatePriority(currentTask.priority, language) || serverT("None", language);
+			const newPriority = translatePriority(updates.priority, language) || serverT("None", language);
+			changes.push(
+				`${serverT("Priority", language)}: ${oldPriority} → ${newPriority}`
+			);
+		}
+		
+		if (updates.status !== undefined && updates.status !== currentTask.status) {
+			const oldStatus = translateStatus(currentTask.status, language) || serverT("None", language);
+			const newStatus = translateStatus(updates.status, language) || serverT("None", language);
+			changes.push(
+				`${serverT("Status", language)}: ${oldStatus} → ${newStatus}`
+			);
+		}
+		
+		if (
+			updates.assigned_to !== undefined &&
+			updates.assigned_to !== currentTask.assigned_to
+		) {
+			changes.push(serverT("Assignment updated", language));
+		}
+		
+		if (
+			updates.date_started !== undefined &&
+			updates.date_started !== currentTask.date_started
+		) {
+			const oldDate = currentTask.date_started || serverT("None", language);
+			const newDate = updates.date_started || serverT("None", language);
+			changes.push(
+				`${serverT("Date started", language)}: ${oldDate} → ${newDate}`
+			);
+		}
+
+		if (changes.length > 0) {
+			const logMessage = `${serverT("Task updated", language)}: ${changes.join(", ")}`;
+			addNoteToTask(taskId, logMessage, true, userId);
+		}
+	}
+
+	return result;
+}

src/lib/serverTranslations.js

@@ -0,0 +1,79 @@
+// Server-side translations for system messages
+// This is separate from the client-side translation system
+
+const serverTranslations = {
+  pl: {
+    "Status changed from": "Status zmieniony z",
+    "to": "na",
+    "Priority": "Priorytet",
+    "Status": "Status", 
+    "Assignment updated": "Przypisanie zaktualizowane",
+    "Date started": "Data rozpoczęcia",
+    "None": "Brak",
+    "Task updated": "Zadanie zaktualizowane",
+    "pending": "oczekujące",
+    "in_progress": "w trakcie", 
+    "completed": "ukończone",
+    "cancelled": "anulowane",
+    "on_hold": "wstrzymane",
+    "low": "niski",
+    "normal": "normalny",
+    "medium": "średni", 
+    "high": "wysoki",
+    "urgent": "pilny"
+  },
+  en: {
+    "Status changed from": "Status changed from",
+    "to": "to",
+    "Priority": "Priority",
+    "Status": "Status",
+    "Assignment updated": "Assignment updated", 
+    "Date started": "Date started",
+    "None": "None",
+    "Task updated": "Task updated",
+    "pending": "pending",
+    "in_progress": "in_progress",
+    "completed": "completed", 
+    "cancelled": "cancelled",
+    "on_hold": "on_hold",
+    "low": "low",
+    "normal": "normal",
+    "medium": "medium",
+    "high": "high", 
+    "urgent": "urgent"
+  }
+};
+
+// Get user's preferred language from request headers or default to Polish
+export function getUserLanguage(req = null) {
+  // For now, default to Polish. In the future, this could be determined from:
+  // - Request headers (Accept-Language)
+  // - User profile settings
+  // - Session data
+  return 'pl';
+}
+
+// Translate a key for server-side use
+export function serverT(key, language = 'pl') {
+  if (serverTranslations[language] && serverTranslations[language][key]) {
+    return serverTranslations[language][key];
+  }
+  
+  // Fallback to English if Polish not found
+  if (language !== 'en' && serverTranslations.en[key]) {
+    return serverTranslations.en[key];
+  }
+  
+  // Return the key itself if no translation found
+  return key;
+}
+
+// Helper function to translate status values
+export function translateStatus(status, language = 'pl') {
+  return serverT(status, language);
+}
+
+// Helper function to translate priority values  
+export function translatePriority(priority, language = 'pl') {
+  return serverT(priority, language);
+}

src/lib/userManagement.js

@@ -3,22 +3,22 @@ import bcrypt from "bcryptjs"
 import { randomBytes } from "crypto"
 
 // Create a new user
-export async function createUser({ name, email, password, role = 'user', is_active = true }) {
-  const existingUser = db.prepare("SELECT id FROM users WHERE email = ?").get(email)
+export async function createUser({ name, username, password, role = 'user', is_active = true }) {
+  const existingUser = db.prepare("SELECT id FROM users WHERE username = ?").get(username)
   if (existingUser) {
-    throw new Error("User with this email already exists")
+    throw new Error("User with this username already exists")
   }
 
   const passwordHash = await bcrypt.hash(password, 12)
   const userId = randomBytes(16).toString('hex')
 
   const result = db.prepare(`
-    INSERT INTO users (id, name, email, password_hash, role, is_active)
+    INSERT INTO users (id, name, username, password_hash, role, is_active)
     VALUES (?, ?, ?, ?, ?, ?)
-  `).run(userId, name, email, passwordHash, role, is_active ? 1 : 0)
+  `).run(userId, name, username, passwordHash, role, is_active ? 1 : 0)
 
   return db.prepare(`
-    SELECT id, name, email, role, created_at, updated_at, last_login, 
+    SELECT id, name, username, role, created_at, updated_at, last_login, 
            is_active, failed_login_attempts, locked_until
     FROM users WHERE id = ?
   `).get(userId)
@@ -27,24 +27,24 @@ export async function createUser({ name, email, password, role = 'user', is_acti
 // Get user by ID
 export function getUserById(id) {
   return db.prepare(`
-    SELECT id, name, email, password_hash, role, created_at, updated_at, last_login, 
+    SELECT id, name, username, password_hash, role, created_at, updated_at, last_login, 
            is_active, failed_login_attempts, locked_until
     FROM users WHERE id = ?
   `).get(id)
 }
 
-// Get user by email
-export function getUserByEmail(email) {
+// Get user by username
+export function getUserByUsername(username) {
   return db.prepare(`
-    SELECT id, name, email, role, created_at, last_login, is_active
-    FROM users WHERE email = ?
-  `).get(email)
+    SELECT id, name, username, role, created_at, last_login, is_active
+    FROM users WHERE username = ?
+  `).get(username)
 }
 
 // Get all users (for admin)
 export function getAllUsers() {
   return db.prepare(`
-    SELECT id, name, email, password_hash, role, created_at, updated_at, last_login, is_active,
+    SELECT id, name, username, password_hash, role, created_at, updated_at, last_login, is_active,
            failed_login_attempts, locked_until
     FROM users 
     ORDER BY created_at DESC
@@ -136,11 +136,11 @@ export async function updateUser(userId, updates) {
     return null;
   }
 
-  // Check if email is being changed and if it already exists
-  if (updates.email && updates.email !== user.email) {
-    const existingUser = db.prepare("SELECT id FROM users WHERE email = ? AND id != ?").get(updates.email, userId);
+  // Check if username is being changed and if it already exists
+  if (updates.username && updates.username !== user.username) {
+    const existingUser = db.prepare("SELECT id FROM users WHERE username = ? AND id != ?").get(updates.username, userId);
     if (existingUser) {
-      throw new Error("User with this email already exists");
+      throw new Error("User with this username already exists");
     }
   }
 
@@ -153,9 +153,9 @@ export async function updateUser(userId, updates) {
     updateValues.push(updates.name);
   }
 
-  if (updates.email !== undefined) {
-    updateFields.push("email = ?");
-    updateValues.push(updates.email);
+  if (updates.username !== undefined) {
+    updateFields.push("username = ?");
+    updateValues.push(updates.username);
   }
 
   if (updates.role !== undefined) {
@@ -198,7 +198,7 @@ export async function updateUser(userId, updates) {
 
   if (result.changes > 0) {
     return db.prepare(`
-      SELECT id, name, email, role, created_at, updated_at, last_login, 
+      SELECT id, name, username, role, created_at, updated_at, last_login, 
              is_active, failed_login_attempts, locked_until
       FROM users WHERE id = ?
     `).get(userId);

src/lib/utils.js

@@ -15,6 +15,8 @@ export const formatProjectStatus = (status) => {
 			return "W realizacji (realizacja)";
 		case "fulfilled":
 			return "Zakończony";
+		case "cancelled":
+			return "Wycofany";
 		default:
 			return "-";
 	}
@@ -34,9 +36,9 @@ export const formatProjectType = (type) => {
 };
 
 export const getDeadlineText = (daysRemaining) => {
-	if (daysRemaining === 0) return "Due Today";
-	if (daysRemaining > 0) return `${daysRemaining} days left`;
-	return `${Math.abs(daysRemaining)} days overdue`;
+	if (daysRemaining === 0) return "Termin dzisiaj";
+	if (daysRemaining > 0) return `${daysRemaining} dni pozostało`;
+	return `${Math.abs(daysRemaining)} dni przeterminowane`;
 };
 
 export const formatDate = (date, options = {}) => {
@@ -46,7 +48,7 @@ export const formatDate = (date, options = {}) => {
 		const dateObj = typeof date === "string" ? new Date(date) : date;
 
 		if (isNaN(dateObj.getTime())) {
-			return "Invalid date";
+			return "Nieprawidłowa data";
 		}
 
 		// Default to DD.MM.YYYY format
@@ -63,7 +65,7 @@ export const formatDate = (date, options = {}) => {
 		return `${day}.${month}.${year}`;
 	} catch (error) {
 		console.error("Error formatting date:", error);
-		return "Invalid date";
+		return "Nieprawidłowa data";
 	}
 };
 
@@ -88,3 +90,42 @@ export const formatDateForInput = (date) => {
 		return "";
 	}
 };
+
+export const formatCoordinates = (coordinatesString) => {
+	if (!coordinatesString) return "";
+
+	try {
+		const [latStr, lngStr] = coordinatesString.split(",");
+		const lat = parseFloat(latStr.trim());
+		const lng = parseFloat(lngStr.trim());
+
+		if (isNaN(lat) || isNaN(lng)) {
+			return coordinatesString; // Return original if parsing fails
+		}
+
+		const formatDMS = (decimal, isLatitude) => {
+			const direction = isLatitude
+				? decimal >= 0
+					? "N"
+					: "S"
+				: decimal >= 0
+				? "E"
+				: "W";
+
+			const absolute = Math.abs(decimal);
+			const degrees = Math.floor(absolute);
+			const minutes = Math.floor((absolute - degrees) * 60);
+			const seconds = Math.round(((absolute - degrees) * 60 - minutes) * 60);
+
+			return `${direction}: ${degrees}°${minutes}'${seconds}"`;
+		};
+
+		const latDMS = formatDMS(lat, true);
+		const lngDMS = formatDMS(lng, false);
+
+		return `${latDMS}, ${lngDMS}`;
+	} catch (error) {
+		console.error("Error formatting coordinates:", error);
+		return coordinatesString;
+	}
+};

update-admin-username.js

@@ -0,0 +1,28 @@
+import Database from "better-sqlite3";
+
+const db = new Database("./data/database.sqlite");
+
+console.log("🔄 Updating admin username...");
+
+try {
+    // Update admin username from email to simple "admin"
+    const result = db.prepare('UPDATE users SET username = ? WHERE username = ?').run('admin', 'admin@localhost.com');
+    
+    if (result.changes > 0) {
+        console.log('✅ Admin username updated to "admin"');
+    } else {
+        console.log('ℹ️  No admin user found with email "admin@localhost.com"');
+    }
+    
+    // Show current users
+    const users = db.prepare("SELECT name, username, role FROM users").all();
+    console.log("\nCurrent users:");
+    users.forEach(user => {
+        console.log(`  - ${user.name} (${user.role}): username="${user.username}"`);
+    });
+    
+} catch (error) {
+    console.error("❌ Error:", error.message);
+} finally {
+    db.close();
+}

update-queries.ps1

@@ -0,0 +1,20 @@
+$files = @(
+    "d:\panel\src\lib\queries\tasks.js",
+    "d:\panel\src\lib\userManagement.js"
+)
+
+foreach ($file in $files) {
+    if (Test-Path $file) {
+        Write-Host "Updating $file..."
+        $content = Get-Content $file -Raw
+        $content = $content -replace "creator\.email as created_by_email", "creator.username as created_by_username"
+        $content = $content -replace "assignee\.email as assigned_to_email", "assignee.username as assigned_to_username"
+        $content = $content -replace "u\.email as created_by_email", "u.username as created_by_username"
+        $content = $content -replace "SELECT id, name, email, role", "SELECT id, name, username, role"
+        $content = $content -replace "name, email, role", "name, username, role"
+        Set-Content $file $content -NoNewline
+        Write-Host "Updated $file"
+    }
+}
+
+Write-Host "All files updated!"