ci: include eslint.config.js + workflow files in path triggers

Three consecutive commits to eslint.config.js (9be49acb, 1035b730,
7ae60852) failed to trigger any new common-plat CI runs even after
`git push origin main && git push gitea main`. Root cause: the
workflow had a 'paths:' filter that only matched packages/**,
services/**, dashboards/**, lockfiles, and a few specific
root manifests — `eslint.config.js` and the workflows themselves
were NOT in the list, so Gitea silently skipped every push that
only touched those files.

Added the two missing globs:

  - 'eslint.config.js'
  - '.gitea/workflows/**'

Both are demonstrably CI-relevant — eslint.config.js drives the
lint step that's currently failing, and workflow edits obviously
need to trigger a fresh run.

This commit edits a workflow file, so it is itself covered by the
new path glob and should trigger a run on push.

.gitea/workflows/ci.yml

@@ -11,6 +11,11 @@ on:
       - 'pnpm-workspace.yaml'
       - 'package.json'
       - 'tsconfig.base.json'
+      # Root-level configs that affect CI behavior and must trigger a
+      # rerun when modified (otherwise pushes to e.g. eslint.config.js
+      # are silently skipped and CI stays red against stale code).
+      - 'eslint.config.js'
+      - '.gitea/workflows/**'
 
 concurrency:
   group: ci-common-plat-${{ github.ref }}