feat: add ui_design_specialist (Phase 3 UI Design) v0.2.0

- New specialist: ui_design_specialist with iterative mockup dialog
- New Phase 3 (UI Design) between Architecture and Implementation
- Relay model: orchestrator passes responses verbatim in Phase 3
- Cost-control exception for UI Design phase (unlimited subagent calls)
- Webspace mockup workflow with cache-buster and obscure dirs
- UX states coverage (loading, empty, error, partial)
- WCAG 2.1 AA accessibility guidelines
- Design tokens (CSS custom properties) in design system
- Component states (hover, focus, active, disabled, loading, error)
- Sitemap/wireframe before mockups for complex UIs
- Real content strategy (no Lorem Ipsum)
- Form validation UX in mockups
- Dark mode and i18n support (optional)
- Design handoff support (specialist available during implementation)
- Skip mechanism for non-UI projects
- Mockup state file for context compression recovery
- Multi-page mockup strategy with index.html
- task_graph.json mockup references
- Plugin version: 0.1.14 -> 0.2.0
- 47 files changed across 7 implementation blocks
- 3 review rounds with 41 corrections integrated

agents/release_auditor/prompts/agent.system.main.solving.md

@@ -24,7 +24,7 @@ You are the release_auditor subagent. The orchestrator delegates to you for qual
 5. Return audit report with recommendation: ready / not ready.
 
 ## Procedure: Release Handoff
-0. Verify all phases completed (intake, planning, implementation, testing, runtime, deployment).
+0. Verify all phases completed (intake, planning, architecture, UI design, implementation, testing, runtime, deployment).
 1. Generate handoff documentation (README, runbook, rollback).
 2. Document next steps for the receiving team.
 3. Tag the release commit if git repo.