- Add /skills route with local skills browser and recommended presets
- Backend: ListSkills/SkillDirs/AgentTypeName on Engine, skill presets API
- Provider preset cards: pin register/add buttons to card bottom
- Fix layout footer overlap by removing min-h-0 from content wrapper
- Replace logo with styled text brand, remove temporary local JSON override
- Add i18n translations for skill-related strings (en/zh/zh-TW/ja/es)
Made-with: Cursor
