feat: CRM Clinicas SaaS - MVP completo

- Auth: Login/Register con creacion de clinica
- Dashboard: KPIs reales, graficas recharts
- Pacientes: CRUD completo con busqueda
- Agenda: FullCalendar, drag-and-drop, vista recepcion
- Expediente: Notas SOAP, signos vitales, CIE-10
- Facturacion: Facturas con IVA, campos CFDI SAT
- Inventario: Productos, stock, movimientos, alertas
- Configuracion: Clinica, equipo, catalogo servicios
- Supabase self-hosted: 18 tablas con RLS multi-tenant
- Docker + Nginx para produccion

Co-Authored-By: claude-flow <ruv@ruv.net>

supabase/migrations/006_inventory.sql

@@ -0,0 +1,64 @@
+CREATE TABLE products (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  clinic_id UUID NOT NULL REFERENCES clinics(id) ON DELETE CASCADE,
+  sku TEXT,
+  name TEXT NOT NULL,
+  description TEXT,
+  category TEXT NOT NULL DEFAULT 'insumo' CHECK (category IN ('medicamento','insumo','material','equipo')),
+  unit TEXT NOT NULL DEFAULT 'pieza',
+  purchase_price DECIMAL(10,2) NOT NULL DEFAULT 0,
+  sale_price DECIMAL(10,2) NOT NULL DEFAULT 0,
+  min_stock INT NOT NULL DEFAULT 0,
+  is_active BOOLEAN NOT NULL DEFAULT TRUE,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+ALTER TABLE invoice_items ADD CONSTRAINT fk_invoice_items_product FOREIGN KEY (product_id) REFERENCES products(id);
+
+CREATE TABLE inventory_stock (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  clinic_id UUID NOT NULL REFERENCES clinics(id) ON DELETE CASCADE,
+  product_id UUID NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+  current_stock DECIMAL(10,2) NOT NULL DEFAULT 0,
+  last_updated TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  UNIQUE(clinic_id, product_id)
+);
+
+CREATE TABLE inventory_movements (
+  id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+  clinic_id UUID NOT NULL REFERENCES clinics(id) ON DELETE CASCADE,
+  product_id UUID NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+  type TEXT NOT NULL CHECK (type IN ('entrada','salida','ajuste','merma')),
+  quantity DECIMAL(10,2) NOT NULL,
+  reason TEXT,
+  reference_id TEXT,
+  created_by UUID REFERENCES users(id),
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX idx_movements_product ON inventory_movements(product_id, created_at DESC);
+
+CREATE OR REPLACE FUNCTION update_inventory_stock()
+RETURNS TRIGGER AS $$
+BEGIN
+  INSERT INTO inventory_stock (clinic_id, product_id, current_stock, last_updated)
+  VALUES (NEW.clinic_id, NEW.product_id, NEW.quantity, NOW())
+  ON CONFLICT (clinic_id, product_id)
+  DO UPDATE SET current_stock = inventory_stock.current_stock + NEW.quantity, last_updated = NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql SECURITY DEFINER;
+
+CREATE TRIGGER trg_update_stock AFTER INSERT ON inventory_movements FOR EACH ROW EXECUTE FUNCTION update_inventory_stock();
+
+ALTER TABLE products ENABLE ROW LEVEL SECURITY;
+CREATE POLICY "View clinic products" ON products FOR SELECT USING (clinic_id = auth.clinic_id());
+CREATE POLICY "Manage clinic products" ON products FOR ALL USING (clinic_id = auth.clinic_id());
+
+ALTER TABLE inventory_stock ENABLE ROW LEVEL SECURITY;
+CREATE POLICY "View clinic stock" ON inventory_stock FOR SELECT USING (clinic_id = auth.clinic_id());
+CREATE POLICY "Manage clinic stock" ON inventory_stock FOR ALL USING (clinic_id = auth.clinic_id());
+
+ALTER TABLE inventory_movements ENABLE ROW LEVEL SECURITY;
+CREATE POLICY "View clinic movements" ON inventory_movements FOR SELECT USING (clinic_id = auth.clinic_id());
+CREATE POLICY "Insert clinic movements" ON inventory_movements FOR INSERT WITH CHECK (clinic_id = auth.clinic_id());