Address review on CopilotKit/CopilotKit#6355:
- Pin `pydantic-ai-slim[ag-ui,openai]==2.22.0` and `ag-ui-protocol==0.1.19`,
matching the starter fleet standard. Open-ended floors would pull a
breaking major on release, and `docker/Dockerfile.agent:16` runs a bare
`uv sync` that would silently re-resolve forward.
- Mirror the specifiers in `uv.lock`'s `requires-dist` so `uv sync --frozen`
at `Dockerfile:42` keeps working. Resolved versions and hashes are
unchanged; `uv lock` is a no-op.
- Construct `StateDeps(ProverbsState())` per request instead of
`dataclasses.replace()`. `replace()` is a shallow copy, so the new deps
point at the same state object; it is only safe today because `StateDeps`
has one field that the adapter rebinds before every run. Any deps class
with a second mutable field would silently share it.
David Sanchez
4be25161b1