feat: Add user tracking to project tasks and notes

- Implemented user tracking columns in project_tasks and notes tables.
- Added created_by and assigned_to fields to project_tasks.
- Introduced created_by field and is_system flag in notes.
- Updated API endpoints to handle user tracking during task and note creation.
- Enhanced database initialization to include new columns and indexes.
- Created utility functions to fetch users for task assignment.
- Updated front-end components to display user information for tasks and notes.
- Added tests for project-tasks API endpoints to verify functionality.

src/app/api/project-tasks/route.js

@@ -43,11 +43,20 @@ async function createProjectTaskHandler(req) {
 			);
 		}
 
-		const result = createProjectTask(data);
+		// Add user tracking information from authenticated session
+		const taskData = {
+			...data,
+			created_by: req.user?.id || null,
+			// If no assigned_to is specified, default to the creator
+			assigned_to: data.assigned_to || req.user?.id || null,
+		};
+
+		const result = createProjectTask(taskData);
 		return NextResponse.json({ success: true, id: result.lastInsertRowid });
 	} catch (error) {
+		console.error("Error creating project task:", error);
 		return NextResponse.json(
-			{ error: "Failed to create project task" },
+			{ error: "Failed to create project task", details: error.message },
 			{ status: 500 }
 		);
 	}