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jabber.developer2
14f76ab1db
Drive both OpenAI-compatible flavours from one code path. Requests default to /v1/responses and fall back once to /v1/chat/completions when the provider reports the endpoint missing (404/405/501) or rejects the payload shape (400/422); the working flavour is cached for the rest of the run as a first-attempt hint, with the other flavour kept as a fallback so a backend change self-corrects in-request. A per-provider override is available via /ai set api-type <provider> responses|chat-completions|auto and persisted as api_type= in the provider section. One payload builder serves both flavours (messages/stream vs input/stream/store); history and custom settings are serialized once per request and the per-flavour envelope is assembled per attempt under a single lock acquisition, so the fallback retry cannot double-count the prompt. ai_parse_response_typed() dispatches on the request flavour and splits extraction per envelope: chat completions anchored on choices[].message.content, responses on the output_text part with a string-aware backward scan bounded to that part's own object so a reasoning summary or a truncated body is never returned as the reply. Endpoint detection classifies wrong-model errors from the structured error code/type/message when present, so route-missing 404s from gateways no longer suppress the fallback; it preserves and surfaces the first payload-rejection error when the fallback also fails, and re-probes on an unparseable 2xx. resolved_api_type is written only through a locked helper guarded by a URL/api-type epoch, and api_url is snapshotted under settings_lock in the request and models-fetch threads, closing use-after-free and stale-cache races against /ai set provider. The models-fetch provider ref is taken on the main thread and released on every worker exit path. Reserved custom-setting keys are extended with input (store stays writable as a legitimate chat-completions parameter).