chore: PAT token verification (temporary)

[xuefei1313]

Temporary PR for PAT permission verification. Will be closed without merge.

In general, the fix is to add an explicit permissions block that grants the least privileges the workflow requires. Since this workflow only echoes a message and does not call GitHub APIs or manipulate repository resources, it can safely run with read-only access to repository contents, or even no token at all. The common minimal pattern is to set permissions: contents: read at the workflow or job level.

The best targeted fix without changing existing functionality is to add a permissions block under the verify job (or at the root, above jobs:); both scopes work, but placing it on the job clarifies that it applies specifically to that job. We should grant only contents: read, which is equivalent to a read-only default and is sufficient if any future steps use actions/checkout. Concretely, in .github/workflows/pat-verify.yml, insert:

    permissions:
      contents: read

indented to align under the verify job, between runs-on: ubuntu-latest and steps:. No imports or additional definitions are needed.