Add chat thread forking

2026-08-16 17:42:39 -07:00
parent 42022bf055
commit eb2b0d3ca0
17 changed files with 1410 additions and 244 deletions
@@ -73,8 +73,10 @@ Notes:

 Persisted chat streams with a `chatId` are backend-owned active runs:
 - Once started, the backend keeps the stream running even if the HTTP client disconnects or refreshes.
+- The backend reserves the active run before persisting submitted messages, preventing a root or fork deletion from interleaving with stream setup.
 - While running, `GET /v1/active-runs` includes the `chatId`.
 - Starting a second persisted stream for the same active `chatId` returns `409`, unless its `clientRequestId` matches the active submission, in which case the existing stream is replayed.
+- Starting a persisted stream while that chat family is being deleted returns `409 { "message": "chat family deletion already in progress" }`.
 - Clients can reattach with `POST /v1/chats/:chatId/stream/attach`.

 ## Attach Endpoint