MarekWo 8ab19582cd fix(dm): Fix unread markers by deduping retries in all endpoints ...

Extracted dedup_retry_messages() helper (300s window, was 120s which
was too tight) and applied it in three places:
- GET /api/dm/messages - already had inline dedup, now uses helper
- get_dm_conversations() - fixes last_message_timestamp inflation
- GET /api/dm/updates - was missing dedup entirely, counted retries
  as unread messages (root cause of persistent unread markers)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-25 10:34:39 +01:00

22 KiB

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