fix: replace inner prek call with direct ruff in generate_from_specs

The rebuild-from-specs hook was failing in CI because the inner
prek call (used to format generated files) did not properly set up
hook environments in the CI context, leaving generated schema files
with single-line repr() output that exceeded line length limits.

Replace the inner prek call with direct ruff check/format calls on
the generated Python files. Add ruff as a direct dev dependency so
it's available in the venv. This is simpler and more reliable than
depending on prek hook environments being properly initialized.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rtibblesbot

pyproject.toml

@@ -39,6 +39,7 @@ test = [
 dev = [
     { include-group = "test" },
     "prek ; python_version >= '3.8'",
+    "ruff ; python_version >= '3.8'",
 ]
 
 [tool.uv]

scripts/generate_from_specs.py

@@ -310,7 +310,6 @@ def set_package_json_version():
 
     output_files += set_package_json_version()
 
-    env = os.environ.copy()
-    env["SKIP"] = "rebuild-from-specs"
-
-    subprocess.call(["prek", "run", "--files"] + output_files, env=env)
+    py_files = [f for f in output_files if f.endswith(".py")]
+    subprocess.call(["ruff", "check", "--fix"] + py_files)
+    subprocess.call(["ruff", "format"] + py_files)