docs: sync CLAUDE.md with actual codebase structure

Update prettier section to reflect actual supported formats (CSS, Go,
HTML, JSON, XML, YAML instead of Go, JSON, XML, Markdown). Add missing
directory documentation for scripts, docs, tapes, and assets.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: koki-develop

CLAUDE.md

@@ -60,11 +60,21 @@ goreleaser release --snapshot --clean
   - Terraform lexer implementation
 
 - **internal/prettier/**: Code prettifiers
-  - Language-specific formatting (Go, JSON, XML, Markdown)
+  - Language-specific formatting (CSS, Go, HTML, JSON, XML, YAML)
 
 - **internal/styles/**: Theme definitions
   - Custom syntax highlighting themes
 
+- **scripts/**: Build scripts
+  - Shell completion generation
+
+- **docs/**: Documentation assets
+  - Demo GIFs, images, theme previews
+
+- **tapes/**: VHS tape files for generating demo GIFs
+
+- **assets/**: Logo files
+
 ### Key Dependencies
 
 - **Chroma**: Syntax highlighting engine (200+ language support)