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/router.py

@@ -0,0 +1,74 @@
+from datetime import date
+
+import redis.asyncio as aioredis
+from fastapi import APIRouter, Depends, Response
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.database import get_db
+from app.core.dependencies import get_current_business
+from app.core.redis import get_redis
+from app.modules.reservations import schemas, service
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[schemas.ReservationRead])
+async def list_reservations(
+    date: date | None = None,
+    status: str | None = None,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+):
+    return await service.list_reservations(db, business_id, date, status)
+
+
+@router.post("/", response_model=schemas.ReservationRead, status_code=201)
+async def create_reservation(
+    body: schemas.ReservationCreate,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+    redis: aioredis.Redis = Depends(get_redis),
+):
+    return await service.create_reservation(db, redis, business_id, body)
+
+
+@router.get("/{reservation_id}", response_model=schemas.ReservationRead)
+async def get_reservation(
+    reservation_id: int,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+):
+    return await service.get_reservation(db, business_id, reservation_id)
+
+
+@router.put("/{reservation_id}", response_model=schemas.ReservationRead)
+async def update_reservation(
+    reservation_id: int,
+    body: schemas.ReservationUpdate,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+    redis: aioredis.Redis = Depends(get_redis),
+):
+    return await service.update_reservation(db, redis, business_id, reservation_id, body)
+
+
+@router.delete("/{reservation_id}", status_code=204)
+async def delete_reservation(
+    reservation_id: int,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+    redis: aioredis.Redis = Depends(get_redis),
+):
+    await service.delete_reservation(db, redis, business_id, reservation_id)
+    return Response(status_code=204)
+
+
+@router.patch("/{reservation_id}/status", response_model=schemas.ReservationRead)
+async def update_status(
+    reservation_id: int,
+    body: schemas.StatusUpdate,
+    business_id: int = Depends(get_current_business),
+    db: AsyncSession = Depends(get_db),
+    redis: aioredis.Redis = Depends(get_redis),
+):
+    return await service.update_status(db, redis, business_id, reservation_id, body.status)