Add dismiss functionality for completed standalone tasksmakima/task-task-5dde682c-5dde682c

## Changes

### Backend
- Add 'hidden' field to Task model (models.rs)
- Add database migration for hidden column (20250122000000_add_task_hidden.sql)
- Update task listing queries to include hidden field and filter out hidden tasks
- Update update_task_for_owner to handle hidden field

### Frontend
- Add hidden field to TaskSummary interface (api.ts)
- Add dismissTask API function (api.ts)
- Add hideTask function to useTasks hook
- Add Dismiss button to TaskList for completed standalone tasks
- Wire up onDismiss handler in mesh.tsx route

## Behavior
- Completed standalone tasks (tasks without a contract) show a "Dismiss" button
- Dismissing a task sets hidden=true and removes it from the task list
- Hidden tasks are filtered out by default in all task listing queries

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/makima/frontend/src/routes/mesh.tsx b/makima/frontend/src/routes/mesh.tsx
index 453bdff..d3ca84e 100644
--- a/makima/frontend/src/routes/mesh.tsx
+++ b/makima/frontend/src/routes/mesh.tsx
@@ -81,7 +81,7 @@ export default function MeshPage() {
   const { id } = useParams<{ id: string }>();
   const navigate = useNavigate();
   const { isAuthenticated, isAuthConfigured, isLoading: authLoading } = useAuth();
-  const { tasks, loading, error, conflict, clearConflict, fetchTask, fetchTasks, editTask, removeTask, saveTask } = useTasks();
+  const { tasks, loading, error, conflict, clearConflict, fetchTask, fetchTasks, editTask, removeTask, hideTask, saveTask } = useTasks();
   const { pendingQuestions, submitAnswer } = useSupervisorQuestions();
 
   // Memoize pending question IDs for efficient lookup
@@ -373,6 +373,13 @@ export default function MeshPage() {
     [removeTask, id, taskDetail, navigate]
   );
 
+  const handleDismiss = useCallback(
+    async (taskId: string) => {
+      await hideTask(taskId);
+    },
+    [hideTask]
+  );
+
   const handleStart = useCallback(
     async (taskId: string) => {
       try {
@@ -830,6 +837,7 @@ export default function MeshPage() {
                 loading={loading || creating}
                 onSelect={handleSelectTask}
                 onDelete={handleDelete}
+                onDismiss={handleDismiss}
                 onCreate={handleCreate}
               />
             </div>