Le test 'should return FEATURE_NOT_AVAILABLE for BASIC user requesting chat'
était décalé par rapport à la config actuelle où BASIC a 10 crédits chat/mois.
Remplacement par deux tests reflétant la réalité:
- BASIC sous la limite (5/10) → allowed=true, limit=10
- BASIC à la limite (10/10) → allowed=false, reason=QUOTA_EXCEEDED
- 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
