feat: expire duplicate-media hashes after a configurable TTL#236
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Hashes no longer live forever. Each sighting records last_seen_at; a repost links to the previous occurrence and shifts the row forward (message_id + last_seen_at updated), so the TTL is a sliding window. A daily scheduler deletes hashes not seen within evil.bot.media-hash-ttl (default 180 days).
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Hashes no longer live forever. Each sighting records last_seen_at; a repost links to the previous occurrence and shifts the row forward (message_id + last_seen_at updated), so the TTL is a sliding window. A daily scheduler deletes hashes not seen within evil.bot.media-hash-ttl (default 180 days).