add .claude config folder with Claude-equivalent agent and hook settings

Mirrors .cursor and .codex structure with Claude model assignments:
- haiku for lighter tasks (translator, browser-check, profiler)
- sonnet for standard tasks (code-quality, plan-implementer, etc.)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -167,7 +167,6 @@ yarn-debug.log*
 yarn-error.log*
 
 .vscode
-.claude
 .playwright-cli
 .firecrawl/