fix(ci): update vitest configs after channel move to extensions/ (openclaw#46066)

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: scoootscooob <167050519+scoootscooob@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

.github/workflows/ci.yml

@@ -159,6 +159,9 @@ jobs:
           - runtime: node
             task: extensions
             command: pnpm test:extensions
+          - runtime: node
+            task: channels
+            command: pnpm test:channels
           - runtime: node
             task: protocol
             command: pnpm protocol:check

.github/workflows/docker-release.yml

@@ -59,7 +59,9 @@ jobs:
     environment: docker-release
     steps:
       - name: Approve Docker backfill
-        run: echo "Approved Docker backfill for ${{ inputs.tag }}"
+        env:
+          RELEASE_TAG: ${{ inputs.tag }}
+        run: echo "Approved Docker backfill for $RELEASE_TAG"
 
   # KEEP THIS WORKFLOW ON GITHUB-HOSTED RUNNERS.
   # DO NOT MOVE IT BACK TO BLACKSMITH WITHOUT RE-VALIDATING TAG BUILDS AND BACKFILLS.