chore: update gitignore, bump to 0.2.1, apply CodeRabbit fixes

- Add .windsurf/, *.bak*, .1code/, .emdash.json to .gitignore
- Sync standard gitignore entries per project conventions
- Apply final test/tool fixes from CodeRabbit review threads
- Update GraphQL schema to latest introspection snapshot
- Bump version 0.2.0 → 0.2.1

Co-authored-by: Claude <noreply@anthropic.com>

.gitignore

@@ -34,6 +34,13 @@ logs/
 # IDE/Editor
 .bivvy
 .cursor
+.windsurf/
+.1code/
+.emdash.json
+
+# Backup files
+*.bak
+*.bak-*
 
 # Claude Code user settings (gitignore local settings)
 .claude/settings.local.json