Every third-party GitHub Action in the workflows is now pinned to a full
commit SHA instead of a floating major tag, closing a supply-chain gap
where a mutable tag like `@v6` could be force-pushed to point at
malicious code. Seven actions were already SHA-pinned; this brings the
remaining first-party `actions/*` and `astral-sh/setup-uv` references in
line.
## Changes
- Pinned all previously tag-referenced actions to their current commit
SHA with the exact release as a trailing comment (the format Dependabot
reads and updates): `actions/checkout` → `v6.0.3`,
`actions/setup-python` → `v6.2.0`, `actions/github-script` → `v9.0.0`,
`actions/upload-artifact` → `v7.0.1`, `actions/download-artifact` →
`v8.0.1`, `actions/cache/{restore,save}` → `v5.0.5`,
`actions/configure-pages` → `v6.0.0`, `actions/deploy-pages` → `v5.0.0`,
`actions/upload-pages-artifact` → `v5.0.0`,
`actions/create-github-app-token` → `v3.2.0`, and `astral-sh/setup-uv` →
`v7.6.0`.
- Applied across all workflow files plus the `uv_setup` composite
action; local same-repo references (`./.github/workflows/_*.yml`,
`./.github/actions/uv_setup`) left as path refs since they resolve from
the same commit.
Extract a composite GitHub Action for Python + uv setup, replacing 12
scattered `astral-sh/setup-uv@v7` calls with a single reusable
`uv_setup` action that scopes cache dependency globs per library. Also
tightens issue template language and fixes a broken expression in the
release-test workflow.
## Changes
- Add `.github/actions/uv_setup/action.yml` — composite action wrapping
`astral-sh/setup-uv@v7` with a `working-directory` input that scopes
`cache-dependency-glob` to `<dir>/pyproject.toml`, `<dir>/uv.lock`, and
`<dir>/requirements*.txt`
- Migrate all workflow files (`_test.yml`, `_lint.yml`,
`_test_langgraph.yml`, `_integration_test.yml`, `baseline.yml`,
`bench.yml`, `ci.yml`, `release.yml`, `_test_release.yml`,
`uv_lock_ugprade.yml`) from inline `astral-sh/setup-uv@v7` to
`./.github/actions/uv_setup`, passing library-specific
`working-directory` for cache scoping
- Fix typo in `_test_release.yml` step name: `$${ env.PYTHON_VERSION }}`
→ `${{ env.PYTHON_VERSION }}`
- Disable uv cache for the release smoke-test job (`enable-cache:
false`) since it installs from PyPI, not the local lockfile
- Update `config.yml` API reference URL to point to `/python/langgraph/`
instead of `/python/`
- Tighten `privileged.yml` — shorter description, add English language
policy link, add "do not begin work unless assigned" notice
