Fix completion actions: default to PR and support remote repos (#21)

* Fix completion actions: default to PR and support remote repos

- Change default completion action from 'branch' to 'pr' for tasks
  using daemon working directory
- Allow PR completion action to work without target_repo_path if the
  worktree already has an origin remote configured (e.g., when cloned
  from a remote URL)
- Update create_pull_request to accept optional target_repo parameter

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

* Add dismiss functionality for completed standalone tasks

## 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>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 27 insertions, 11 deletions

diff --git a/makima/frontend/src/components/mesh/TaskList.tsx b/makima/frontend/src/components/mesh/TaskList.tsx
index e3f2862..016fef5 100644
--- a/makima/frontend/src/components/mesh/TaskList.tsx
+++ b/makima/frontend/src/components/mesh/TaskList.tsx
@@ -6,6 +6,7 @@ interface TaskListProps {
   loading: boolean;
   onSelect: (id: string) => void;
   onDelete: (id: string) => void;
+  onDismiss: (id: string) => void;
   onCreate: () => void;
 }
 
@@ -88,6 +89,7 @@ export function TaskList({
   loading,
   onSelect,
   onDelete,
+  onDismiss,
   onCreate,
 }: TaskListProps) {
   // Filter state - default to 'active' to show only active contracts
@@ -300,17 +302,31 @@ export function TaskList({
                           </div>
                         </button>
                         {/* Supervisor tasks cannot be deleted directly - they are deleted with the contract */}
-                        {!task.isSupervisor && (
-                          <button
-                            onClick={(e) => {
-                              e.stopPropagation();
-                              onDelete(task.id);
-                            }}
-                            className="px-2 py-1 font-mono text-[10px] text-red-400 hover:bg-red-400/10 border border-red-400/30 hover:border-red-400/50 transition-colors uppercase"
-                          >
-                            Delete
-                          </button>
-                        )}
+                        <div className="flex gap-2">
+                          {/* Show dismiss button for completed standalone tasks (tasks without a contract) */}
+                          {!task.contractId && (task.status === "done" || task.status === "failed" || task.status === "merged") && (
+                            <button
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                onDismiss(task.id);
+                              }}
+                              className="px-2 py-1 font-mono text-[10px] text-[#8b949e] hover:bg-[rgba(117,170,252,0.1)] border border-[rgba(117,170,252,0.25)] hover:border-[#3f6fb3] transition-colors uppercase"
+                            >
+                              Dismiss
+                            </button>
+                          )}
+                          {!task.isSupervisor && (
+                            <button
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                onDelete(task.id);
+                              }}
+                              className="px-2 py-1 font-mono text-[10px] text-red-400 hover:bg-red-400/10 border border-red-400/30 hover:border-red-400/50 transition-colors uppercase"
+                            >
+                              Delete
+                            </button>
+                          )}
+                        </div>
                       </div>
                     </div>
                   ))}