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tiennm99
87a8371dcb
Subscribers previously stored only chatID; the daily-push cron sent
without MessageThreadID so Telegram routed to General regardless of the
topic the user subscribed from.
- Storage shape: []Subscriber{ChatID, ThreadID} keyed by (ChatID, ThreadID)
so the same chat can subscribe in multiple topics independently.
- Decoder accepts legacy []int64 rows (ThreadID=0); successful mutations
rewrite the slot in the new shape, no manual migration needed.
- Cron forwards MessageThreadID on every send.
- Auto-prune classifies terminal errors: chat-wide kills (bot blocked,
deactivated, kicked, deleted, group upgraded) wipe every entry for the
ChatID; topic-only "have no rights to send" prunes just (ChatID, ThreadID).