Strict OpenAI clients (e.g. opencode / the Vercel AI SDK) validate every
streaming `data:` frame as a chat.completion.chunk. The id / source /
tool_call / tool_calls_pending events were emitted as bare `{"docsgpt": ...}`
objects with no `choices`, which those clients reject ("expected array,
received undefined" on `choices`).
Wrap the extension in an otherwise-empty chunk
(choices:[{index:0,delta:{},finish_reason:null}]) with a top-level `docsgpt`
field that OpenAI clients ignore, and skip the placeholder "None"
conversation_id frame emitted when the call is not persisted.
Alex
b1f220ec05