Resolve 5 conflicts where main added Anthropic Opus 4.6/4.7 fast-mode
support that touches the same signatures PR 5711 extended:
studio/backend/core/inference/external_provider.py
Keep both PR 5711 sampling fields (frequency_penalty, seed, stop,
service_tier, parallel_tool_calls) and main's fast_mode in the
stream signature, docstring, and _stream_anthropic call site.
studio/backend/models/inference.py
Append fast_mode Field alongside PR 5711's new ChatCompletionRequest
fields; both flow through the existing dispatch.
studio/backend/routes/inference.py
Forward fast_mode and the PR 5711 sampling fields to the stream
generator together.
studio/frontend/src/features/chat/types/api.ts
Add fast_mode? to OpenAIChatCompletionsRequest after the PR 5711
field block.
studio/frontend/src/features/chat/utils/chat-settings-storage.ts
Persist fastMode alongside seed / stop / serviceTier /
parallelToolCalls.
No semantic changes to either feature surface. 161 backend routing
tests still pass; frontend tsc clean.
c43c48a7e0