ci: compute Windows Bazel PATH in setup action

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

@@ -323,46 +323,15 @@ if [[ "${RUNNER_OS:-}" == "Windows" ]]; then
     fi
   done
 
-  # The GitHub Windows image puts many unrelated versioned tools on PATH. Those
-  # entries are still part of Bazel action/test keys when PATH is forwarded, so
-  # image churn such as Maven minor-version updates can invalidate otherwise
-  # reusable cache entries. Keep only the PATH segments Bazel actions/tests need.
-  windows_cache_stable_path_entries=()
-  if [[ -n "${PATH:-}" ]]; then
-    windows_path="${PATH}"
-    if command -v cygpath >/dev/null 2>&1; then
-      windows_path="$(cygpath -w -p "${PATH}")"
-    fi
-
-    IFS=';' read -r -a windows_path_entries <<< "${windows_path}"
-    for path_entry in "${windows_path_entries[@]}"; do
-      case "${path_entry}" in
-        *'Microsoft Visual Studio'* | \
-          *'Windows Kits'* | \
-          *'Microsoft SDKs'* | \
-          'C:\Program Files\Git\'* | \
-          'C:\Program Files\PowerShell\'* | \
-          'C:\Users\runneradmin\AppData\Local\Microsoft\WindowsApps' | \
-          'C:\hostedtoolcache\windows\node\'* | \
-          'C:\Windows' | \
-          'C:\Windows\'* | \
-          'D:\a\_temp\install-dotslash\bin')
-          windows_cache_stable_path_entries+=("${path_entry}")
-          ;;
-      esac
-    done
-  fi
-
-  if (( ${#windows_cache_stable_path_entries[@]} == 0 )); then
-    echo "Failed to derive cache-stable Windows PATH from runner PATH." >&2
+  if [[ -z "${CODEX_BAZEL_WINDOWS_PATH:-}" ]]; then
+    echo "CODEX_BAZEL_WINDOWS_PATH must be set for Windows Bazel CI." >&2
     exit 1
   fi
 
-  stable_windows_path="$(IFS=';'; printf '%s' "${windows_cache_stable_path_entries[*]}")"
   post_config_bazel_args+=(
-    "--action_env=PATH=${stable_windows_path}"
-    "--host_action_env=PATH=${stable_windows_path}"
-    "--test_env=PATH=${stable_windows_path}"
+    "--action_env=PATH=${CODEX_BAZEL_WINDOWS_PATH}"
+    "--host_action_env=PATH=${CODEX_BAZEL_WINDOWS_PATH}"
+    "--test_env=PATH=${CODEX_BAZEL_WINDOWS_PATH}"
   )
 fi