Bundle Ruff for Python codegen formatting

.github/workflows/ci.yaml

@@ -53,17 +53,6 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - uses: astral-sh/setup-uv@v3
-      # The Python codegen shells out to `ruff format`; different ruff
-      # versions wrap long lines differently, so the snapshot-drift
-      # check below is meaningless unless CI and local devs use the
-      # same ruff version. Pin it explicitly.
-      - uses: astral-sh/ruff-action@v3
-        with:
-          version: "0.15.8"
-          # `args` short-circuits the action's default `ruff check` —
-          # we only want ruff on PATH so the codegen can shell out to
-          # `ruff format`, not for the action itself to lint the repo.
-          args: "--version"
       - name: Regenerate demo Python client from schema
         run: |
           cargo run -p reflectapi-cli --quiet -- codegen \

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased
 
 - Python package codegen now emits sibling submodule imports in dependency order, so Python 3.14/Pydantic can import generated packages where one sibling model annotation references another sibling namespace.
+- Python codegen now formats with a bundled Ruff wasm formatter, so generated Python output is deterministic even when `ruff` is not installed locally.
 - Rust codegen snapshot typechecking now handles macOS proc-macro library names instead of assuming Linux-style `.so` files.
 
 ## 0.17.5

README.md

@@ -42,7 +42,7 @@
 
 ### Building and running
 
-Ensure that you have `prettier`, `rustfmt`, and `ruff` available in your PATH for consistently formatted generated code.
+Ensure that you have `prettier` and `rustfmt` available in your PATH for consistently formatted generated TypeScript and Rust code. Python codegen uses a bundled Ruff formatter.
 
 To run the demo server: