feat: persist branding, visual identity, and database integration changes

backend/schema.sql

@@ -0,0 +1,32 @@
+-- Tabela de domínios principais
+CREATE TABLE IF NOT EXISTS domains (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(255) UNIQUE NOT NULL,
+    hostinger_id VARCHAR(255),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Tabela de subdomínios (entradas DNS)
+CREATE TABLE IF NOT EXISTS subdomains (
+    id SERIAL PRIMARY KEY,
+    domain_id INTEGER REFERENCES domains(id) ON DELETE CASCADE,
+    subdomain VARCHAR(255) NOT NULL,
+    full_domain VARCHAR(255) UNIQUE NOT NULL,
+    type VARCHAR(10) DEFAULT 'A',
+    value VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(domain_id, subdomain)
+);
+
+-- Tabela de branding (identidade visual)
+CREATE TABLE IF NOT EXISTS branding (
+    id SERIAL PRIMARY KEY,
+    subdomain_id INTEGER UNIQUE REFERENCES subdomains(id) ON DELETE CASCADE,
+    logo_url TEXT,
+    primary_color VARCHAR(50) DEFAULT '#FF6B00',
+    secondary_color VARCHAR(50) DEFAULT '#1A1A1A',
+    title VARCHAR(255),
+    description TEXT,
+    favicon_url TEXT,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);