fix: allow publish job to run on feature branch for testing

- Make pages dependency optional to allow testing without pages deployment
- Add rule to allow publish job on ghost-content-extraction branch
- This enables testing the RSS feed parsing and error handling

ghost-upload/.gitlab-ci.yml

@@ -5,6 +5,8 @@ publish:
     - cd ./ghost-upload
     - cargo run
   needs:
-    - pages
+    - job: pages
+      optional: true
   rules:
     - if: "$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH"
+    - if: "$CI_COMMIT_BRANCH == 'ghost-content-extraction'"  # Allow testing on this branch