feat: auto-suspend tasks on quota errors, add Claude progress tracking

- Auto-suspend tasks after 3 consecutive quota/auth errors with
  retry-after date parsing and Discord notification
- Add tool_progress and tool_use_summary streaming from Claude Agent SDK
- Prefix progress messages with invisible marker so bots ignore them
- Fix misleading provider label in codex service logs

src/types.ts

@@ -48,6 +48,7 @@ export interface ScheduledTask {
   last_run: string | null;
   last_result: string | null;
   status: 'active' | 'paused' | 'completed';
+  suspended_until?: string | null;
   created_at: string;
 }