feat: initial commit — HermesMessages SaaS platform

Backend (FastAPI + Python 3.12):
- Multi-tenant auth with JWT: login, register, refresh, Meta OAuth
- Business & BusinessConfig management
- WhatsApp webhook with HMAC signature verification
- Bot engine powered by Claude AI
- Calendar availability with Redis caching
- Reservations CRUD with status management
- Dashboard analytics (stats, agenda, peak hours)
- Billing & plan management
- Admin panel with platform-wide stats
- Async bcrypt via asyncio.to_thread
- IntegrityError handling for concurrent registration race conditions

Frontend (React 18 + Vite + Tailwind CSS):
- Multi-step guided registration form with helper text on every field
- Login page with show/hide password toggle
- Protected routes with AuthContext
- Dashboard with stats cards, bar chart, and daily agenda
- Reservations list with search, filters, and inline status actions
- Calendar with weekly view, slot availability, and date blocking
- Config page: business info, schedules, bot personality
- Billing page with plan comparison and usage bar

Design system:
- Bricolage Grotesque + DM Sans typography
- Emerald primary palette with semantic color tokens
- scale(0.97) button press feedback, ease-out animations
- Skeleton loaders, stagger animations, prefers-reduced-motion support
- Accessible: aria-labels, visible focus rings, 4.5:1 contrast

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "hermesmessages-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "react-router-dom": "^6.26.2",
+    "axios": "^1.7.7",
+    "date-fns": "^3.6.0",
+    "lucide-react": "^0.447.0",
+    "recharts": "^2.12.7",
+    "clsx": "^2.1.1",
+    "tailwind-merge": "^2.5.3",
+    "@radix-ui/react-dialog": "^1.1.2",
+    "@radix-ui/react-dropdown-menu": "^2.1.2",
+    "@radix-ui/react-select": "^2.1.2",
+    "@radix-ui/react-toast": "^1.2.2",
+    "@radix-ui/react-tooltip": "^1.1.3",
+    "@radix-ui/react-switch": "^1.1.1",
+    "@radix-ui/react-tabs": "^1.1.1",
+    "@radix-ui/react-avatar": "^1.1.1",
+    "@radix-ui/react-badge": "^1.0.0",
+    "@radix-ui/react-separator": "^1.1.0",
+    "@radix-ui/react-label": "^2.1.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.3.11",
+    "@types/react-dom": "^18.3.1",
+    "@vitejs/plugin-react": "^4.3.2",
+    "autoprefixer": "^10.4.20",
+    "postcss": "^8.4.47",
+    "tailwindcss": "^3.4.13",
+    "vite": "^5.4.8"
+  }
+}