fix(erp): enable erp pages and menu items

backend/internal/data/postgres/migrations/026_create_erp_entities.sql

@@ -0,0 +1,32 @@
+-- Migration: 026_create_erp_entities.sql
+-- Description: Create tables for Customers and Suppliers in ERP
+
+-- ERP Entities (Customers and Suppliers)
+CREATE TABLE IF NOT EXISTS erp_entities (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+    name VARCHAR(255) NOT NULL,
+    document VARCHAR(20), -- CPF/CNPJ
+    email VARCHAR(255),
+    phone VARCHAR(20),
+    type VARCHAR(20) NOT NULL CHECK (type IN ('customer', 'supplier', 'both')),
+    status VARCHAR(20) DEFAULT 'active',
+    address TEXT,
+    city VARCHAR(100),
+    state VARCHAR(2),
+    zip VARCHAR(10),
+    notes TEXT,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Update Financial Transactions to link with Entities
+ALTER TABLE erp_financial_transactions ADD COLUMN IF NOT EXISTS entity_id UUID REFERENCES erp_entities(id);
+
+-- Update Orders to link with Entities instead of companies (optional but more consistent for ERP)
+-- Keep customer_id for now to avoid breaking existing logic, but allow entity_id
+ALTER TABLE erp_orders ADD COLUMN IF NOT EXISTS entity_id UUID REFERENCES erp_entities(id);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_erp_entities_tenant ON erp_entities(tenant_id);
+CREATE INDEX IF NOT EXISTS idx_erp_entities_type ON erp_entities(type);