- PDF extractor: rewrite from embedded bitmap extraction to caption-based
page region screenshots. Finds Figure/Table captions via regex,截取上方/下方
page region, handles compound figures and vector graphics.
- Upvote refresh: new crawler.refresh_upvotes() re-fetches upvotes for recent
N days without inserting new papers. Scheduler runs daily 30min after pipeline.
- Admin: add /admin/refresh-upvotes endpoint and dashboard button.
- UI: remove date quick nav, show upvote update time on detail/card pages,
clean up CSS date-chip styles.
- Utils: add recent_date_strs() helper.
- Add POST /admin/crawl with TaskLock-based reentrancy guard
- Add POST /admin/cleanup (tmp files older than 24h) with CrawlLog
- Add POST /admin/delete with date range and 'DELETE' confirm token
- Add GET /admin/logs (paginated CrawlLog + DataDeleteJob viewer)
- Add app/services/cleaner.py (cleanup_tmp, delete_papers_by_date_range)
- Add app/services/scheduler.py (APScheduler daily crawl/cleanup jobs)
- Wire scheduler startup/shutdown hooks in app/main.py
- Add admin nav link in base.html and APP_HOST security warning
- Add apscheduler>=3.10 dependency
- Add tests/test_admin_phase4.py covering the new endpoints