feat: design system overhaul — sidebar, AI chats, settings, brainstorm, color cleanup

- Sidebar: dynamic brand-accent colors, brainstorm section restyled
- AI chat general: popup panel with expand/collapse, hides when contextual AI open
- AI chat contextual: tabs reordered (Actions first), X close button, height fix
- Settings: all tabs restyled, 6 new color presets (sage, terracotta, iron, etc.)
- Global color cleanup: emerald/orange hardcoded → brand-accent dynamic
- Brainstorm page: orange → brand-accent throughout
- PageEntry animation component added to key pages
- Floating AI button: bg-brand-accent instead of hardcoded black
- i18n: all 15 locales updated with new AI/billing keys
- Billing: freemium quota tracking, BYOK, stripe subscription scaffolding
- Admin: integrated into new design
- AGENTS.md + CLAUDE.md project rules added

.agent/skills/wds-6-asset-generation/data/figma-integration-guide.md

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+# Figma to Code Workshop
+
+**Status:** Coming Soon
+
+**Purpose:** Extract design specifications from Figma and implement them in code
+
+**Tool:** Figma Desktop MCP Server  
+**Direction:** Figma → Code
+
+---
+
+## Overview
+
+This workshop will guide AI agents through importing design specifications from Figma to generate or update code implementations.
+
+### When to Use Figma to Code
+
+Import from Figma when:
+- ✅ Designer has updated visual specifications in Figma
+- ✅ New design system components need implementation
+- ✅ Design tokens (colors, spacing, typography) need extraction
+- ✅ Component states have been refined visually
+- ✅ Design-code sync is needed after visual iteration
+
+---
+
+## Planned Workflow
+
+1. **Connection Check** - Verify Figma Desktop MCP server
+2. **Select Figma Node** - Identify what to import
+3. **Extract Design Specs** - Get colors, spacing, typography, layout
+4. **Generate/Update Code** - Create or update components
+5. **Verify Implementation** - Compare code output to Figma design
+
+---
+
+*This workshop will be developed to complement the Code to Figma workflow.*