feat(tasks): refine enhanced task linking, outliner badge positioning, completion sync and unlink behavior

internal/api/server.go

@@ -97,6 +97,7 @@ func (s *Server) Router() http.Handler {
 		r.Get("/api/v1/triage/deck", s.handleGetTriageDeck)
 		r.Patch("/api/v1/triage/{id}", s.handleTriageAction)
 		r.Get("/api/v1/tasks", s.handleGetTasks)
+		r.Post("/api/v1/tasks/{id}/unlink", s.handleUnlinkEnhancedTask)
 		r.Post("/api/v1/tasks/reorder", s.handleReorderTasks)
 		r.Post("/api/v1/task-lists/{id}/tasks/reorder", s.handleReorderTasks)
 
@@ -842,13 +843,18 @@ func (s *Server) handleUpdateThought(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusBadRequest, err.Error())
 		return
 	}
-	if req.IsCompleted != nil {
-		s.store.SyncDocBlockAndTask(userID, thoughtID, *req.IsCompleted)
-	}
+	s.store.SyncDocBlockAndTask(userID, thoughtID, updated.IsCompleted)
 	s.wsHub.BroadcastToAll("TASK_UPDATED", updated)
 	writeJSON(w, http.StatusOK, updated)
 }
 
+func (s *Server) handleUnlinkEnhancedTask(w http.ResponseWriter, r *http.Request) {
+	userID := auth.GetUserID(r.Context())
+	thoughtID := chi.URLParam(r, "id")
+	s.store.UnlinkTaskFromDocBlock(userID, thoughtID)
+	writeJSON(w, http.StatusOK, map[string]bool{"unlinked": true})
+}
+
 func (s *Server) handleDeleteThought(w http.ResponseWriter, r *http.Request) {
 	userID := auth.GetUserID(r.Context())
 	thoughtID := chi.URLParam(r, "id")