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

architectural-grid_landing/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "react-example",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "tsx server.ts",
+    "build": "vite build && esbuild server.ts --bundle --platform=node --format=cjs --packages=external --sourcemap --outfile=dist/server.cjs",
+    "start": "node dist/server.cjs",
+    "clean": "rm -rf dist",
+    "lint": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@google/genai": "^1.29.0",
+    "@tailwindcss/vite": "^4.1.14",
+    "@types/d3": "^7.4.3",
+    "@types/uuid": "^10.0.0",
+    "@types/ws": "^8.18.1",
+    "@vitejs/plugin-react": "^5.0.4",
+    "d3": "^7.9.0",
+    "dotenv": "^17.2.3",
+    "esbuild": "^0.28.0",
+    "express": "^4.21.2",
+    "lucide-react": "^0.546.0",
+    "motion": "^12.23.24",
+    "react": "^19.0.1",
+    "react-dom": "^19.0.1",
+    "uuid": "^14.0.0",
+    "vite": "^6.2.3",
+    "ws": "^8.20.1"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.21",
+    "@types/node": "^22.14.0",
+    "autoprefixer": "^10.4.21",
+    "tailwindcss": "^4.1.14",
+    "tsx": "^4.21.0",
+    "typescript": "~5.8.2",
+    "vite": "^6.2.3"
+  }
+}