ci: run Windows argument-comment-lint via native Bazel

.github/actions/setup-bazel-ci/action.yml

@@ -60,8 +60,15 @@ runs:
         # Use the shortest available drive to reduce argv/path length issues,
         # but avoid the drive root because some Windows test launchers mis-handle
         # MANIFEST paths there.
-        $bazelOutputUserRoot = if (Test-Path 'D:\') { 'D:\b' } else { 'C:\b' }
+        $hasDDrive = Test-Path 'D:\'
+        $bazelOutputUserRoot = if ($hasDDrive) { 'D:\b' } else { 'C:\b' }
+        $repoContentsCache = Join-Path $env:RUNNER_TEMP "bazel-repo-contents-cache-$env:GITHUB_RUN_ID-$env:GITHUB_JOB"
         "BAZEL_OUTPUT_USER_ROOT=$bazelOutputUserRoot" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        "BAZEL_REPO_CONTENTS_CACHE=$repoContentsCache" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        if (-not $hasDDrive) {
+          $repositoryCache = Join-Path $env:USERPROFILE '.cache\bazel-repo-cache'
+          "BAZEL_REPOSITORY_CACHE=$repositoryCache" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        }
 
     - name: Enable Git long paths (Windows)
       if: runner.os == 'Windows'

.github/scripts/run-bazel-ci.sh

@@ -126,6 +126,17 @@ if [[ $remote_download_toplevel -eq 1 ]]; then
   post_config_bazel_args+=(--remote_download_toplevel)
 fi
 
+if [[ -n "${BAZEL_REPO_CONTENTS_CACHE:-}" ]]; then
+  # Windows self-hosted runners can run multiple Bazel jobs concurrently. Give
+  # each job its own repo contents cache so they do not fight over the shared
+  # path configured in `ci-windows`.
+  post_config_bazel_args+=("--repo_contents_cache=${BAZEL_REPO_CONTENTS_CACHE}")
+fi
+
+if [[ -n "${BAZEL_REPOSITORY_CACHE:-}" ]]; then
+  post_config_bazel_args+=("--repository_cache=${BAZEL_REPOSITORY_CACHE}")
+fi
+
 bazel_console_log="$(mktemp)"
 trap 'rm -f "$bazel_console_log"' EXIT
 

.github/workflows/rust-ci-full.yml

@@ -100,6 +100,8 @@ jobs:
           sudo DEBIAN_FRONTEND=noninteractive apt-get update
           sudo DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends pkg-config libcap-dev
       - name: Run argument comment lint on codex-rs via Bazel
+        env:
+          BUILDBUDDY_API_KEY: ${{ secrets.BUILDBUDDY_API_KEY }}
         shell: bash
         run: |
           ./.github/scripts/run-bazel-ci.sh \

.github/workflows/rust-ci.yml

@@ -159,19 +159,7 @@ jobs:
         run: |
           sudo DEBIAN_FRONTEND=noninteractive apt-get update
           sudo DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends pkg-config libcap-dev
-      - name: Install nightly argument-comment-lint toolchain
-        if: ${{ runner.os == 'Windows' }}
-        shell: bash
-        run: |
-          rustup toolchain install nightly-2025-09-18 \
-            --profile minimal \
-            --component llvm-tools-preview \
-            --component rustc-dev \
-            --component rust-src \
-            --no-self-update
-          rustup default nightly-2025-09-18
       - name: Run argument comment lint on codex-rs via Bazel
-        if: ${{ runner.os != 'Windows' }}
         env:
           BUILDBUDDY_API_KEY: ${{ secrets.BUILDBUDDY_API_KEY }}
         shell: bash
@@ -184,10 +172,6 @@ jobs:
             --build_metadata=COMMIT_SHA=${GITHUB_SHA} \
             -- \
             //codex-rs/...
-      - name: Run argument comment lint on codex-rs via packaged wrapper
-        if: ${{ runner.os == 'Windows' }}
-        shell: bash
-        run: python3 ./tools/argument-comment-lint/run-prebuilt-linter.py
 
   # --- Gatherer job that you mark as the ONLY required status -----------------
   results: