feat: update theme to gitea-dev, adjust build and verification scripts

- Updated .gitignore to include .playwright-mcp
- Changed README.md to reflect new output file names for the dev theme
- Modified compose.dev.yaml to set the default theme to gitea-dev
- Added official-style-map.md to document the theme's baseline and structure
- Updated rules.md to clarify directory responsibilities and naming conventions
- Adjusted package.json test script to include verification against the official theme
- Refactored build.ts and preview.ts to output theme-gitea-dev.css
- Created verify-official-theme.ts to compare generated theme with the official baseline
- Removed unused css.ts and theme-types.ts files
- Cleared out components, pages, and primitives styles to start fresh
- Introduced new token files for ANSI colors, console colors, core colors, named colors, semantic colors, and target colors
- Added theme-meta.ts for theme metadata
- Deleted light.ts theme file as it is no longer needed

compose.dev.yaml

@@ -9,8 +9,8 @@ services:
       - GITEA__service_0x2E_explore__DISABLE_USERS_PAGE=true
       - GITEA__service_0x2E_explore__DISABLE_ORGANIZATIONS_PAGE=true
       - GITEA__service_0x2E_explore__DISABLE_CODE_PAGE=true
-      - GITEA__ui__THEMES=gitea-auto
-      - GITEA__ui__DEFAULT_THEME=gitea-auto
+      - GITEA__ui__THEMES=gitea-dev
+      - GITEA__ui__DEFAULT_THEME=gitea-dev
     restart: always
     volumes:
       - ./.gitea-data:/data