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-8-product-evolution/data/monitoring-guide.md

@@ -0,0 +1,156 @@
+# Step 07: Monitor Impact
+
+## Your Task
+
+Monitor the impact of your Design Delivery (small scope) and measure if it achieved the expected results.
+
+---
+
+## Before You Start
+
+**Ensure you have:**
+
+- ✅ Completed step 06 (validation complete)
+- ✅ Design Delivery deployed to production
+- ✅ Success metrics defined
+
+---
+
+## The Kaizen Measurement Cycle
+
+**改善 (Kaizen) requires measurement:**
+
+```
+Ship → Monitor → Learn → Improve → Ship...
+         ↑
+    You are here!
+```
+
+**Without measurement, you're just guessing!**
+
+---
+
+## Set Up Monitoring
+
+### 1. Define Measurement Period
+
+**From Design Delivery file:**
+
+```yaml
+metrics:
+  measurement_period: '2 weeks after release'
+```
+
+### 2. Track Key Metrics
+
+**See:** [data/monitoring-templates.md](../data/monitoring-templates.md) for Metrics Tracking Dashboard
+
+### 3. Gather Qualitative Feedback
+
+**Monitor multiple channels:**
+
+- User feedback (app reviews, in-app feedback, support tickets)
+- Team feedback (developer observations, support insights)
+
+**See:** [data/monitoring-templates.md](../data/monitoring-templates.md) for Qualitative Feedback template
+
+---
+
+## Analyze Results
+
+### After Measurement Period
+
+**Create:** `analytics/DD-XXX-impact-report.md`
+
+**See:** [data/monitoring-templates.md](../data/monitoring-templates.md) for Impact Report template
+
+Key sections:
+- Executive summary (SUCCESS | PARTIAL | FAILURE)
+- Metrics results (baseline → target → actual)
+- What worked / what didn't
+- Learnings
+- Recommendations (short-term, long-term)
+- Next Kaizen cycle opportunity
+
+---
+
+## Share Results
+
+**Communicate impact to team:**
+
+**See:** [data/monitoring-templates.md](../data/monitoring-templates.md) for Team Results Communication template
+
+---
+
+## Update Design Delivery File
+
+**Final update to `deliveries/DD-XXX-name.yaml`:**
+
+```yaml
+delivery:
+  status: 'measured'
+  measurement_complete: '2024-12-28T10:00:00Z'
+  impact_report: 'analytics/DD-XXX-impact-report.md'
+  result: 'success'
+  metrics_achieved:
+    - 'Feature X usage: 58% (target: 60%)'
+  learnings:
+    - 'Onboarding matters for complex features'
+```
+
+---
+
+## Next Step
+
+After monitoring and learning:
+
+```
+[M] Return to Activity Menu — see also data/kaizen-iteration-guide.md
+```
+
+---
+
+## Success Metrics
+
+✅ Measurement period complete
+✅ All metrics tracked
+✅ Qualitative feedback gathered
+✅ Impact report created
+✅ Results shared with team
+✅ Learnings documented
+✅ Next opportunity identified
+
+---
+
+## Failure Modes
+
+❌ Not measuring impact
+❌ Ending measurement too early
+❌ Ignoring qualitative feedback
+❌ Not documenting learnings
+❌ Not sharing results
+❌ Not identifying next opportunity
+
+---
+
+## Tips
+
+### DO ✅
+
+**Be patient:** Give changes time to work, don't end measurement early
+
+**Be thorough:** Track all metrics, gather qualitative feedback, document learnings
+
+**Be honest:** Report actual results, acknowledge what didn't work
+
+### DON'T ❌
+
+**Don't cherry-pick:** Report all metrics, not just good ones
+
+**Don't stop measuring:** Kaizen requires continuous measurement
+
+**Don't skip sharing:** Team needs to know results
+
+---
+
+**Remember:** Measurement turns improvements into learnings. Learnings drive the next cycle!