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

.agents/skills/wds-8-product-evolution/workflow-analyze.md

@@ -0,0 +1,71 @@
+---
+name: analyze-product
+description: Understand current product state and find improvement targets
+borrows_from: Phase 3 (scenarios)
+---
+
+# Analyze Product
+
+**Goal:** Understand the existing product, identify what needs improving, and prioritize targets.
+
+---
+
+## INITIALIZATION
+
+### Design Log
+Read `{output_folder}/_progress/00-design-log.md`. Check Current and Backlog for context.
+
+
+## Steps
+
+### Step 1: Load Product Context
+
+Gather existing product information:
+
+1. Read project configuration and any existing WDS artifacts
+2. If the product has a live URL → analyze current state (structure, pages, flows)
+3. If codebase available → scan for tech stack, component patterns, design tokens
+4. Document what exists: pages, navigation, key user flows
+
+Present a **Product Snapshot** — current state summary.
+
+### Step 2: Identify Improvement Targets
+
+With the user, identify what needs work:
+
+1. **User feedback** — What are users struggling with?
+2. **Business goals** — What metrics need improvement?
+3. **Technical debt** — What's fragile or outdated?
+4. **Visual gaps** — What looks inconsistent or dated?
+5. **Competitor gaps** — What are competitors doing better?
+
+Create a prioritized list of improvement targets.
+
+### Step 3: Select Target
+
+From the prioritized list, pick ONE target for this improvement cycle:
+
+```
+Improvement targets (prioritized):
+1. [Target] — [Impact] — [Effort]
+2. [Target] — [Impact] — [Effort]
+...
+
+Which target should we tackle first?
+```
+
+### Step 4: Document Analysis
+
+Save analysis to `{output_folder}/evolution/analysis/`:
+
+- Product snapshot
+- Improvement targets with priorities
+- Selected target with rationale
+
+---
+
+## AFTER COMPLETION
+
+1. Update design log
+2. Suggest next action
+3. Return to activity menu