feat(widget): editable task details, scrollable list, and overdue-task fixes

- Add description editing to the widget's task detail popup for
  doot/gtasks/trello, backed by new GET /api/widget/detail and
  POST /api/widget/update endpoints
- Make Google Tasks and Trello cards completable via the widget (Trello
  completion archives the card); fix Trello description never being
  fetched, which meant saving could silently wipe a card's real desc
- Fix google_tasks.due_date/updated_at (TEXT columns) never round-tripping
  through sql.NullTime, which broke cached Google Tasks reads whenever
  the cache was valid
- Fix native-task and Google-Task date-range queries excluding anything
  due before the window start, which dropped incomplete tasks off the
  widget the moment their due day passed (the "overdue tasks disappeared"
  bug)
- Fix native task description edits blanking the task's title
- Make the widget's day list scroll (LazyColumn) instead of clipping
- Optimistically remove a task from the widget immediately on completion,
  ahead of the authoritative background refresh

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ7ikw2ukGJFTHE3bJS7zL

1 files changed, 12 insertions, 0 deletions

diff --git a/internal/api/google_tasks.go b/internal/api/google_tasks.go
index da3cd3b..b580be4 100644
--- a/internal/api/google_tasks.go
+++ b/internal/api/google_tasks.go
@@ -163,6 +163,18 @@ func (c *GoogleTasksClient) CompleteTask(ctx context.Context, listID, taskID str
 	return nil
 }
 
+// UpdateTaskNotes updates a task's notes (description)
+func (c *GoogleTasksClient) UpdateTaskNotes(ctx context.Context, listID, taskID, notes string) error {
+	task := &tasks.Task{
+		Notes: notes,
+	}
+	_, err := c.srv.Tasks.Patch(listID, taskID, task).Context(ctx).Do()
+	if err != nil {
+		return fmt.Errorf("failed to update task notes: %v", err)
+	}
+	return nil
+}
+
 // UncompleteTask marks a task as not completed
 func (c *GoogleTasksClient) UncompleteTask(ctx context.Context, listID, taskID string) error {
 	task := &tasks.Task{