v0.7.6

修复

• 修复 #30：定时任务在并发满载时会将到期窗口持久化进入 FIFO 队列；槽位释放后继续执行，不再因等待超过旧 5 分钟阈值而静默跳过。
• 真正离线错过的周期任务会留下系统评论，便于追溯。
• 在「🛠 设置」中新增最大并发执行数（1–100）和「离线错过超时后不补任务」（1–1440 分钟）；保存后立即作用于后续调度与执行门禁，已排队任务不受超时影响。

验证

• npm test：339 项测试通过
• npm run typecheck：通过
• npm run build：通过

English

Fixes

• Fix #30: due scheduled tasks persist in a FIFO queue while concurrency is saturated and continue after a slot frees, instead of being silently skipped after the former five-minute threshold.
• Truly offline-missed periodic windows now leave a system comment for traceability.
• 🛠 Settings now provides maximum concurrent executions (1–100) and an offline missed-window timeout (1–1440 minutes). Changes apply immediately to subsequent scheduler and execution gates; queued work is never expired by this timeout.

Verification

• npm test: 339 tests passed
• npm run typecheck: passed
• npm run build: passed