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-7-design-system/templates/component-library-config.template.md

@@ -0,0 +1,65 @@
+# Component Library Configuration
+
+**Library:** [Library Name]
+**Version:** [Version]
+**Last Updated:** [Date]
+
+---
+
+## Installation
+
+```bash
+[Installation commands]
+```
+
+---
+
+## Component Mappings
+
+**Format:** `WDS Component → Library Component`
+
+### Interactive Components
+
+- Button [btn-001] → shadcn/ui Button
+- [More mappings]
+
+### Form Components
+
+- Input Field [inp-001] → shadcn/ui Input
+- [More mappings]
+
+---
+
+## Theme Configuration
+
+```json
+{
+  "colors": {
+    "primary": "#2563eb",
+    "secondary": "#64748b"
+  },
+  "typography": {
+    "fontFamily": "Inter, sans-serif"
+  },
+  "spacing": {
+    "unit": "0.25rem"
+  },
+  "borderRadius": {
+    "default": "0.375rem"
+  }
+}
+```
+
+---
+
+## Customizations
+
+[Document any customizations from library defaults]
+
+---
+
+## Library Documentation
+
+**Official Docs:** [Link]
+**Component Gallery:** [Link]
+**GitHub:** [Link]