fix: tool prompt behavior

[tommy0103]

Summary

• Render tool parameter signatures in the tool prompt so models get clearer argument guidance.
• Resolve allowed tool names through both runtime names and model-facing aliases.
• Keep model tool schemas unchanged while still rewriting dotted tool names for model calls.
• Make tool-name tests independent of builtin registry import side effects.

Verification

• env UV_CACHE_DIR=/private/tmp/uv-cache uv run ruff check --no-fix src tests
• env UV_CACHE_DIR=/private/tmp/uv-cache uv run mypy src
• env UV_CACHE_DIR=/private/tmp/uv-cache uv run pytest -q

[frostming]

Hi, I've simplified the CLI renderer to fix the streaming issue, can you update your PR to exclude that change?

[tommy0103]

Hi, I've simplified the CLI renderer to fix the streaming issue, can you update your PR to exclude that change?

Done. I've updated the PR

[frostming]

There is a ruff format issue left. You can run prek run -a to fix it locally.

[tommy0103]

Thanks! I’m still getting used to Ruff/prek, appreciate the heads-up.