v0.5.0 -- Plugin architecture, multi-runtime installer, composable skills

Plugin Architecture

GSP ships as a Claude Code plugin with manifest at .claude-plugin/plugin.json. MCP servers for GitHub and Figma are bundled. Hook scripts run automatically during the pipeline.

Multi-Runtime Installer

The installer now converts Claude Code's native format into each runtime's expected layout:

• Claude Code -- .claude/skills/, .claude/agents/
• OpenCode -- .opencode/skills/, .opencode/agents/
• Gemini CLI -- .gemini/skills/, .gemini/agents/
• Codex CLI -- .agents/skills/ (split layout, no agents)

Tool names are mapped per runtime. Body-level replacements handle paths, invocation syntax, and variables.

Composable Skills

New standalone skills that produce foundation chunks:

• /gsp:accessibility -- 5 modes: design audit, token audit, code audit, accessibility statement, quick contrast check
• /gsp:palette -- OKLCH palettes with perceptual uniformity
• /gsp:typescale -- Mathematical type scales with fluid clamp values
• /gsp:design-system -- Workspace-level codebase scanner

34 Design Style Presets

Structured YAML tokens and AI-ready prompts from designprompts.dev, available via /gsp:style.

Brand-as-Custom-Style

The system phase now produces {brand-name}.yml and {brand-name}.md matching the built-in preset format, so your brand becomes a reusable style.