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Documents the two-layer CSS variable system, the conversion pipeline from VSCode theme JSON to --vscode-* CSS variables, build-time bundling from OpenVSX, runtime theme installation, and localStorage persistence. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The three-layer chain (--vscode-* → --mt-* → --color-*) had a redundant middle layer. Every --mt-* variable was a pure passthrough to --color-*. - Delete 38 dead variables defined 3× each (114 lines): --mt-ansi-*, --mt-terminal-cursor/selection, --mt-gutter*, --mt-editor-font-*, --mt-selection-workspace — none were consumed anywhere - Eliminate duplicate mappings: focusBorder was aliased as --mt-accent, --mt-gutter-active, and --mt-selection-terminal - Drop testing.iconPassed → success mapping (wrong semantic); hardcode green - Move var(--vscode-*, fallback) chains directly into @theme - Update Dockview overrides and inline style refs to use --color-* Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Build-time: scripts/bundle-themes.mjs downloads VSIX files from OpenVSX, extracts theme JSONs, and converts them to --vscode-* CSS variable maps. 13 bundled themes: Dark+, Light+, 9 GitHub variants, 2 Dracula variants. Runtime: users can search and install additional themes from OpenVSX directly in the browser. VSIX extraction uses fflate (~8KB). Installed themes persist in localStorage. Core library in lib/src/lib/themes/: - convert.ts: CONSUMED_VSCODE_KEYS filter + dots-to-hyphens conversion - apply.ts: sets --vscode-* vars on body + manages vscode-light class - store.ts: bundled + installed registry with localStorage persistence - openvsx.ts: search API + in-browser VSIX download/extraction Replaces the 5 hardcoded themes in playground-themes.ts. Storybook themes now derive from bundled.json instead of manual color maps. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- AGENTS.md: replace deleted website/src/lib/playground-themes.ts with lib/src/lib/themes/, add theme.md spec entry - theme.md: fix bundle-themes.mjs path (scripts/ -> lib/scripts/), update stale "replaces the current" for deleted PlaygroundTheme file - layout.md: update --mt-* references to --color-* (collapsed in theme refactor), fix var(--mt-surface) -> var(--color-surface)
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