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>

backend/app/modules/reservations/schemas.py

@@ -0,0 +1,44 @@
+from datetime import date as Date, time as Time
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class ReservationCreate(BaseModel):
+    client_name: str
+    client_phone: str
+    date: Date
+    time_start: Time
+    party_size: int = 1
+    notes: Optional[str] = None
+    source: str = "manual"
+
+
+class ReservationUpdate(BaseModel):
+    client_name: Optional[str] = None
+    client_phone: Optional[str] = None
+    date: Optional[Date] = None
+    time_start: Optional[Time] = None
+    party_size: Optional[int] = None
+    notes: Optional[str] = None
+
+
+class StatusUpdate(BaseModel):
+    status: str
+
+
+class ReservationRead(BaseModel):
+    id: int
+    business_id: int
+    client_name: str
+    client_phone: str
+    date: Date
+    time_start: Time
+    time_end: Time
+    party_size: int
+    status: str
+    source: str
+    notes: Optional[str]
+    created_at: Date
+
+    model_config = {"from_attributes": True}