chore: exclude qfs binary and update release notes for v1.2.2

- Add qfs binary to gitignore (compiled executable from build)
- Update UI labels in configuration form for clarity
- Add release notes documenting v1.2.2 changes

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.gitignore

@@ -23,6 +23,7 @@ secrets.yml
 /importer
 /cron
 /bin/
+qfs
 
 # Local Go build cache used in sandboxed runs
 .gocache/