feat: Implement project search functionality and task management features

- Added search functionality to the Project List page, allowing users to filter projects by name, WP, plot, or investment number.
- Created a new Project Tasks page to manage tasks across all projects, including filtering by status and priority.
- Implemented task status updates and deletion functionality.
- Added a new Task Template Edit page for modifying existing task templates.
- Enhanced Task Template Form to include a description field and loading state during submission.
- Updated UI components for better user experience, including badges for task status and priority.
- Introduced new database queries for managing contracts and projects, including fetching tasks related to projects.
- Added migrations to the database for new columns and improved data handling.

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

@@ -0,0 +1,59 @@
+import db from "@/lib/db";
+import { NextResponse } from "next/server";
+
+export async function GET(req, { params }) {
+	const { id } = await params;
+
+	const contract = db
+		.prepare(
+			`
+			SELECT * FROM contracts
+			WHERE contract_id = ?
+		`
+		)
+		.get(id);
+
+	if (!contract) {
+		return NextResponse.json({ error: "Contract not found" }, { status: 404 });
+	}
+
+	return NextResponse.json(contract);
+}
+
+export async function DELETE(req, { params }) {
+	const { id } = params;
+
+	try {
+		// Check if there are any projects linked to this contract
+		const linkedProjects = db
+			.prepare("SELECT COUNT(*) as count FROM projects WHERE contract_id = ?")
+			.get(id);
+
+		if (linkedProjects.count > 0) {
+			return NextResponse.json(
+				{ error: "Nie można usunąć umowy z przypisanymi projektami" },
+				{ status: 400 }
+			);
+		}
+
+		// Delete the contract
+		const result = db
+			.prepare("DELETE FROM contracts WHERE contract_id = ?")
+			.run(id);
+
+		if (result.changes === 0) {
+			return NextResponse.json(
+				{ error: "Contract not found" },
+				{ status: 404 }
+			);
+		}
+
+		return NextResponse.json({ success: true });
+	} catch (error) {
+		console.error("Error deleting contract:", error);
+		return NextResponse.json(
+			{ error: "Internal server error" },
+			{ status: 500 }
+		);
+	}
+}