feat: Implement internationalization for task management components

- 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.

src/lib/init-db.js

@@ -362,5 +362,24 @@ export default function initializeDatabase() {
 		-- 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);
 	`);
 }