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xarmian
7ec0191d45
* feat(items): idempotency keys for patch writes; an unconfirmed patch resolves only through its own tab (TASK-3585) A patch may carry an idempotency key (Idempotency-Key header, or op_key). The key is claimed per (workspace, user, key) before any write-path guard, with a lease, and its answer is recorded inside the write's own transaction, guarded by the claim token: done holds exactly when the write committed, so an expired claim committed nothing and may be taken over. A retry of the same request replays the answer (Idempotent-Replayed); a key reused for another request is 422; a live claim is 409 in flight; a refused write releases the key. When an open editor received the patch and never confirmed it, the key records the patch id and a boot-scoped reference to that connection. A retry goes only to that connection, whose tab remembers the patches it applied and re-acks one it is sent again; with it gone the answer is patch_outcome_unknown with the diff since, and nothing is re-planned, since an insert-shaped edit would keep its anchor elsewhere. The CLI sends a key per invocation and retries once with it on a transport error or 5xx. MCP 0.90 adds op_key and three codes. Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS * fix(cli): retry a keyed write only when the server advertises idempotency_keys (TASK-3585) An older server ignores op_key, so the CLI's single same-key retry of a 5xx could apply a patch twice against a server that serves patch but not keys. The retry now requires the idempotency_keys capability. Claude-Session: https://claude.ai/code/session_01Q9WssCjFuHjSfLABoW4tmS