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/workflow-images.md

@@ -0,0 +1,39 @@
+---
+name: images
+description: Generate photos, illustrations, and backgrounds from specifications
+---
+
+# Images
+
+**Goal:** Generate production-quality images (hero shots, product photos, illustrations, backgrounds) consistent with the visual direction.
+
+---
+
+## INITIALIZATION
+
+### Design Log
+Read `{output_folder}/_progress/00-design-log.md`. Check Current and Backlog for context.
+
+
+## Steps
+
+Execute steps in `./steps-m/`:
+
+| Step | File | Purpose |
+|------|------|---------|
+| 01 | step-01-load-context.md | Load page specs, visual direction, brand assets |
+| 02 | step-02-inventory.md | Identify all images needed (single or batch) |
+| 03 | step-03-select-style.md | Choose content style (photorealistic, illustration, etc.) |
+| 04 | step-04-references.md | Attach reference images for consistency |
+| 05 | step-05-generate.md | Craft prompts and generate, using earlier results as reference |
+| 06 | step-06-review.md | Review as set, flag outliers for regeneration |
+
+Content to be defined.
+
+---
+
+## AFTER COMPLETION
+
+1. Update design log
+2. Suggest next action
+3. Return to activity menu