Add weekly CI job to check for new AOSP revision tags

Runs every Monday at 9:00 UTC (also manually triggerable).
Regenerates version tables, proxy code, smoke tests, and README.
Creates a PR on branch automated/aosp-update if changes are detected.

Author: xaionaro@dx.center

.github/workflows/check-aosp-updates.yml

@@ -0,0 +1,88 @@
+name: Check AOSP Updates
+
+on:
+  schedule:
+    - cron: '0 9 * * 1' # Every Monday at 9:00 UTC
+  workflow_dispatch: # Allow manual triggering
+
+jobs:
+  check-updates:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+          fetch-depth: 1
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.25.x'
+
+      - name: Regenerate version tables from AOSP tags
+        run: make genversions
+
+      - name: Regenerate code
+        run: |
+          make clean
+          make generate
+          make genaidlcli
+          make smoke
+          make readme
+
+      - name: Check for changes
+        id: changes
+        run: |
+          UNTRACKED=$(git ls-files --others --exclude-standard)
+          if git diff --quiet && [ -z "$UNTRACKED" ]; then
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Create or update pull request
+        if: steps.changes.outputs.changed == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+          BRANCH="automated/aosp-update"
+          git checkout -b "$BRANCH"
+          git add -A
+          git commit -m "$(cat <<'EOF'
+          Update AOSP version tables and generated code
+
+          Automated weekly check found new AOSP revision tags.
+          EOF
+          )"
+          git push --force -u origin "$BRANCH"
+
+          # Create PR only if one doesn't already exist for this branch.
+          EXISTING_PR=$(gh pr list --head "$BRANCH" --state open --json number --jq '.[0].number' 2>/dev/null || true)
+          if [ -n "$EXISTING_PR" ]; then
+            echo "PR #$EXISTING_PR already exists and has been updated."
+          else
+            gh pr create \
+              --title "Update AOSP generated code" \
+              --body "$(cat <<'EOF'
+          ## Summary
+
+          Automated weekly check detected new AOSP revision tags. This PR updates:
+
+          - Version transaction code tables (`binder/versionaware/codes_gen.go`)
+          - Generated AIDL proxy code
+          - E2E smoke tests
+          - README package statistics
+
+          ## Test plan
+
+          - [ ] CI passes (unit tests, vet, build, check-generated)
+          - [ ] Review generated diff for unexpected changes
+          EOF
+          )"
+          fi