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Ethan
ea4554025e
Coder Agents chats could get stuck showing "Thinking" forever when a title regenerate/propose request ran while a generation was in flight. Manual title generation recorded token cost by inserting a hidden assistant message into `chat_messages` and immediately soft-deleting it. Triggers on that table sync `chats.history_version` to `snapshot_version`, so this out-of-band write broke the `history_version` fence of an in-flight generation task, killing it without a replacement and leaving the chat stuck in `running`. Remove the accounting path entirely; AI Gateway already records title-call usage in `aibridge_interceptions`/`aibridge_token_usages`. The manual title endpoints no longer write to `chat_messages` at all, and new regression tests assert `history_version` stays untouched. Note this intentionally drops title-generation cost from chatd's chat-level cost surfaces; it still counts against the user's AI budget via AI Gateway. Closes CODAGT-595