* fix(proxy): stop answering with the literal string "None" on the proxy-server, auth, and health routes
The error objects these routes return defaulted `type` and `param` to the
four-character string "None", so a client's error handler matched no known
OpenAI type and fell into its generic branch.
Route them through the shared openai_error_payload helpers instead, so `type`
comes from the carried type or the HTTP status and `param` serializes as JSON
null.
* fix(proxy): stop answering with the literal string "None" on the spend and management routes
The error objects these routes return defaulted `type` and `param` to the
four-character string "None", so a client's error handler matched no known
OpenAI type and fell into its generic branch.
Route them through the shared openai_error_payload helpers instead, so `type`
comes from the carried type or the HTTP status and `param` serializes as JSON
null.
* test(proxy): pin the mid-stream failure frame and the DB outage body to a JSON null param
* fix(proxy): type upstream timeouts as timeout_error and update integration asserts for the null param
A 408 with no carried type now answers timeout_error instead of invalid_request_error, so a client branching on type keeps retrying it. Three integration suites still compared auth rejections against param="None".
* fix(proxy): keep a 408 on main's invalid_request_error type and pin the transcription file cap's 400
* fix(proxy): type a route failure by the status it answers with after the tag-routing and no-deployment remap
* fix(proxy): keep auth_error on proxy-raised 401/403 route failures and ban the string None as an error type or param
* fix(proxy): type a hook's 401 or 403 on completions, moderations and transcription by its status, as chat does
Only a status the proxy remapped into 401 or 403, such as a tag-routing denial, keeps auth_error.
* test(proxy): build the transcription file-cap test on a real router so it holds after the router refactor
636e707089