Method degrade

src/sync/watcher.ts:669–675

* Permanently disable live watching after a terminal runtime failure * (watch-resource exhaustion, lock contention past the retry budget, or a * persistent generic sync failure past the retry budget). * Idempotent: logs one actionable warning, fires WatchOptions.onDegraded * once

(reason: string, context: Record<string, unknown> = {})

   * once, and stops the watcher. A subsequent start() clears the latch.
   */
  private degrade(reason: string, context: Record<string, unknown> = {}): void {
    if (this.degradedReason) return;
    this.degradedReason = reason;
    logWarn('File watcher disabled', { projectRoot: this.projectRoot, reason, ...context });
    this.onDegraded?.(reason);
    this.stop();
  }

  /**
   * Warn ONCE that the Linux inotify watch budget is exhausted (ENOSPC), and