- Add Biome as formatter and linter (replaces Prettier)
- Configure Husky + lint-staged for pre-commit hooks
- Add VS Code settings for format on save
- Ignore components/ui/ (shadcn generated code)
- Remove semicolons, use 4-space indent
- Reformat all files to new style
- Switch from Geist to Plus Jakarta Sans (body) and JetBrains Mono (code)
- Add visual diff display for edit_diagram tool showing search/replace pairs
- Update color palette to clean modern OKLCH-based scheme
- Improve chat message display with better styling and animations
- Add syntax-highlighted code blocks for XML/JSON output
- Improve scrollbar and shadow utilities
- Update all URLs from vercel.app to next-ai-drawio.jiang.jp
- Remove fake aggregateRating from JSON-LD (better SEO credibility)
- Move JSON-LD script to <head> for better SEO crawler detection
- Enhance JSON-LD description with specific features
- Add 'free diagram generator' and 'online diagram maker' keywords
- Improve Twitter Card description with call-to-action
Addresses critical issues identified in SEO review:
- Artificial rating data removed
- JSON-LD placement improved
- Domain consistency across all files
- Enhanced metadata with Open Graph and Twitter Card tags
- Added robots.ts for search engine crawling directives
- Added sitemap.ts for site structure
- Improved image alt text for better accessibility and SEO
- Added JSON-LD structured data (Schema.org SoftwareApplication)
- Configured proper meta tags including keywords, authors, and robots settings
- Set metadataBase for proper URL resolution
