Switch storage backend from in-memory to SQLite (silences the library warning).
recent_urls (the edit-redelivery dedup map) now survives restarts: it's tiny and
TTL-bounded, stored via the library KV store, with wall-clock timestamps and
prune-on-load. last_video is deliberately NOT persisted — each value is a base64
video up to ~133 MB, so persisting it would bloat the DB; it stays in memory.
DB lives at bot-state.db (gitignored).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Group-chat bot that downloads videos from X/Instagram/YouTube/TikTok links
via yt-dlp and posts them back, plus /speed and /rev video toys.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
