refactor : rename TaskType to TaskTag across the stack

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/stores/timer.ts

@@ -83,7 +83,7 @@ export const useTimerStore = defineStore('timer', () => {
                 ? (typeof task.project === 'string' ? task.project : (task.project['@id'] ?? (task.project.id ? `/api/projects/${task.project.id}` : null)))
                 : null,
             task: typeof task === 'string' ? task : (task['@id'] ?? `/api/tasks/${task.id}`),
-            types: task.types?.map((t) => typeof t === 'string' ? t : (t['@id'] ?? `/api/task_types/${t.id}`)) ?? [],
+            tags: task.tags?.map((t) => typeof t === 'string' ? t : (t['@id'] ?? `/api/task_tags/${t.id}`)) ?? [],
         })
         startTicking()
     }