v1.1.0 — /schedule UI, silence timeout, recording cleanup

Added

• Standing-call schedule UI — /schedule list | add | edit | remove | pause | resume to manage multiple auto-record schedules at runtime (no restart). Schedules persist to data/schedules.json, referenced by short id with autocomplete. Admin-gated (Manage Server); grantable to a role via Discord's native command permissions.
• Silence timeout — the bot auto-leaves a voice channel after a configurable period with no voice activity (SILENCE_TIMEOUT_MINUTES, default 20), so a cancelled call doesn't leave it recording indefinitely. Cleans up the empty session and skips transcription/summary.
• Automatic recording cleanup — old, already-transcribed audio files are pruned on a retention schedule (RECORDING_RETENTION_DAYS, default 7) to keep disk usage bounded; transcripts/summaries are preserved.

Changed

• Scheduler refactored from a single env-var-driven cron job to managing N jobs from the schedule store. Legacy SCHEDULED_* env vars now seed the store once on first run, then are ignored (the JSON store is canonical).

Full changelog: https://github.com/The-Yak-Collective/openrecapper/blob/main/CHANGELOG.md