fix: clean up Phase 1/2 commit issues

- Remove duplicate HTTP_STATUS/NETWORK exports in constants.js
- Remove unused responseHelpers import from server.js
- Remove backup file and doc artifacts from tracking
- Update .gitignore to prevent re-adding bloat files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

status/.gitignore

@@ -1,2 +1,7 @@
 node_modules/
 dist/
+*.backup-*
+DEPLOYMENT_GUIDE.md
+EMBY_DEPLOYMENT.md
+QUICK_DEPLOY_EMBY.md
+README.md