feat: implement customer registration flow and business hours system

Major changes:
- Add customer registration with email/phone lookup (app/booking/registro)
- Add customers API endpoint (app/api/customers/route)
- Implement business hours for locations (mon-fri 10-7, sat 10-6, sun closed)
- Fix availability function type casting issues
- Add business hours utilities (lib/utils/business-hours.ts)
- Update Location type to include business_hours JSONB
- Add mock payment component for testing
- Remove Supabase auth from booking flow
- Fix /cita redirect path in booking flow

Database migrations:
- Add category column to services table
- Add business_hours JSONB column to locations table
- Fix availability functions with proper type casting
- Update get_detailed_availability to use business_hours

Features:
- Customer lookup by email or phone
- Auto-redirect to registration if customer not found
- Pre-fill customer data if exists
- Business hours per day of week
- Location-specific opening/closing times

scripts/seed_test_data.sql

@@ -0,0 +1,46 @@
+-- Seed data for testing availability
+-- Execute in Supabase Dashboard: Database > SQL Editor
+
+-- Insert sample staff if none exists
+INSERT INTO staff (user_id, location_id, role, display_name, phone, is_active, is_available_for_booking, work_hours_start, work_hours_end, work_days)
+SELECT 
+    gen_random_uuid() as user_id,
+    id as location_id,
+    'artist' as role,
+    'Artista Demo' as display_name,
+    '+52 844 123 4567' as phone,
+    true as is_active,
+    true as is_available_for_booking,
+    '10:00'::TIME as work_hours_start,
+    '19:00'::TIME as work_hours_end,
+    'MON,TUE,WED,THU,FRI,SAT' as work_days
+FROM locations 
+WHERE is_active = true
+AND NOT EXISTS (SELECT 1 FROM staff WHERE location_id = locations.id AND display_name = 'Artista Demo')
+LIMIT 1;
+
+-- Insert sample resources if none exists
+INSERT INTO resources (location_id, name, type, capacity, is_active)
+SELECT 
+    id as location_id,
+    'Estación Demo' as name,
+    'station' as type,
+    1 as capacity,
+    true as is_active
+FROM locations 
+WHERE is_active = true
+AND NOT EXISTS (SELECT 1 FROM resources WHERE location_id = locations.id AND name = 'Estación Demo')
+LIMIT 1;
+
+-- Verify results
+SELECT 
+    'Staff added' as info, 
+    COUNT(*)::text as count 
+FROM staff 
+WHERE display_name = 'Artista Demo'
+UNION ALL
+SELECT 
+    'Resources added', 
+    COUNT(*)::text 
+FROM resources 
+WHERE name = 'Estación Demo';