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/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);
+}