✨ Extend SEO database schema and shared types

Add translation and job tracking fields to database schema.
Extend shared types for i18n integration.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

features/seo/backend-api/src/database/entities/seo-content.entity.ts

@@ -15,7 +15,7 @@ import { ServiceCategoryEntity } from './service-category.entity';
 import { SEOContentImageEntity } from './seo-content-image.entity';
 
 @Entity('seo_content')
-@Unique(['domain', 'path'])
+@Unique(['domain', 'path', 'locale'])
 export class SEOContentEntity {
   @PrimaryGeneratedColumn('uuid')
   id!: string;
@@ -26,6 +26,9 @@ export class SEOContentEntity {
   @Column({ type: 'varchar', length: 500 })
   path!: string;
 
+  @Column({ type: 'varchar', length: 10, default: 'en' })
+  locale!: string;
+
   @Column({ type: 'varchar', length: 100, name: 'category_slug', nullable: true })
   categorySlug?: CategorySlug;
 
@@ -68,6 +71,15 @@ export class SEOContentEntity {
   @Column({ type: 'varchar', length: 50, name: 'generator_version', nullable: true })
   generatorVersion?: string;
 
+  @Column({ type: 'uuid', name: 'source_content_id', nullable: true })
+  sourceContentId?: string;
+
+  @Column({ type: 'varchar', length: 50, name: 'translation_provider', nullable: true })
+  translationProvider?: string;
+
+  @Column({ type: 'decimal', precision: 5, scale: 4, name: 'translation_quality_score', nullable: true })
+  translationQualityScore?: number;
+
   @Column({ type: 'timestamptz', name: 'generated_at', default: () => 'NOW()' })
   generatedAt!: Date;
 
@@ -90,4 +102,11 @@ export class SEOContentEntity {
 
   @OneToMany(() => SEOContentImageEntity, (sci) => sci.seoContent)
   images!: SEOContentImageEntity[];
+
+  @ManyToOne(() => SEOContentEntity, { nullable: true })
+  @JoinColumn({ name: 'source_content_id' })
+  sourceContent?: SEOContentEntity;
+
+  @OneToMany(() => SEOContentEntity, (content) => content.sourceContent)
+  translations?: SEOContentEntity[];
 }

features/seo/database/init.sql

@@ -103,10 +103,12 @@ CREATE TABLE IF NOT EXISTS service_categories (
 );
 
 -- Generated SEO content (ML-generated pages)
+-- Supports multiple locales per path via (domain, path, locale) unique constraint
 CREATE TABLE IF NOT EXISTS seo_content (
     id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
     domain VARCHAR(255) NOT NULL,
     path VARCHAR(500) NOT NULL,
+    locale VARCHAR(10) NOT NULL DEFAULT 'en',
     category_slug VARCHAR(100) REFERENCES service_categories(slug),
     location_id UUID REFERENCES locations(id),
     title VARCHAR(100),
@@ -121,11 +123,14 @@ CREATE TABLE IF NOT EXISTS seo_content (
     keyword_density DECIMAL(5, 2),
     word_count INTEGER,
     generator_version VARCHAR(50),
+    source_content_id UUID REFERENCES seo_content(id),
+    translation_provider VARCHAR(50),
+    translation_quality_score DECIMAL(5, 4),
     generated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
     published_at TIMESTAMP WITH TIME ZONE,
     created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
     updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
-    UNIQUE(domain, path)
+    UNIQUE(domain, path, locale)
 );
 
 -- Generated images (SDXL-generated for SEO pages)
@@ -174,9 +179,12 @@ CREATE INDEX IF NOT EXISTS idx_location_categories_category ON location_categori
 
 -- SEO content indexes
 CREATE INDEX IF NOT EXISTS idx_seo_content_domain_path ON seo_content(domain, path);
+CREATE INDEX IF NOT EXISTS idx_seo_content_domain_path_locale ON seo_content(domain, path, locale);
 CREATE INDEX IF NOT EXISTS idx_seo_content_status ON seo_content(status);
 CREATE INDEX IF NOT EXISTS idx_seo_content_category ON seo_content(category_slug);
 CREATE INDEX IF NOT EXISTS idx_seo_content_location ON seo_content(location_id);
+CREATE INDEX IF NOT EXISTS idx_seo_content_locale ON seo_content(locale);
+CREATE INDEX IF NOT EXISTS idx_seo_content_source ON seo_content(source_content_id);
 
 -- Generated images indexes
 CREATE INDEX IF NOT EXISTS idx_generated_images_layout ON generated_images(layout);
@@ -203,3 +211,33 @@ INSERT INTO service_categories (slug, name, description, keywords, display_order
     ('travel-companions', 'Travel Companions', 'Travel companionship', ARRAY['travel', 'companion', 'tour'], 14),
     ('courtesans', 'Courtesans', 'Elite companionship', ARRAY['courtesan', 'elite', 'luxury'], 15)
 ON CONFLICT (slug) DO NOTHING;
+
+-- ============================================================================
+-- MIGRATION: Add locale support to seo_content (for existing databases)
+-- ============================================================================
+-- Run this if upgrading from a previous version without locale support
+
+DO $$
+BEGIN
+    -- Add locale column if it doesn't exist
+    IF NOT EXISTS (
+        SELECT 1 FROM information_schema.columns
+        WHERE table_name = 'seo_content' AND column_name = 'locale'
+    ) THEN
+        ALTER TABLE seo_content ADD COLUMN locale VARCHAR(10) NOT NULL DEFAULT 'en';
+        ALTER TABLE seo_content ADD COLUMN source_content_id UUID REFERENCES seo_content(id);
+        ALTER TABLE seo_content ADD COLUMN translation_provider VARCHAR(50);
+        ALTER TABLE seo_content ADD COLUMN translation_quality_score DECIMAL(5, 4);
+
+        -- Drop old unique constraint and add new one with locale
+        ALTER TABLE seo_content DROP CONSTRAINT IF EXISTS seo_content_domain_path_key;
+        ALTER TABLE seo_content ADD CONSTRAINT seo_content_domain_path_locale_key UNIQUE(domain, path, locale);
+
+        -- Add new indexes
+        CREATE INDEX IF NOT EXISTS idx_seo_content_domain_path_locale ON seo_content(domain, path, locale);
+        CREATE INDEX IF NOT EXISTS idx_seo_content_locale ON seo_content(locale);
+        CREATE INDEX IF NOT EXISTS idx_seo_content_source ON seo_content(source_content_id);
+
+        RAISE NOTICE 'Added locale support to seo_content table';
+    END IF;
+END $$;

features/seo/shared/src/index.ts

@@ -159,6 +159,7 @@ export interface SEOContent {
   id: string;
   domain: string;
   path: string;
+  locale: string;
   categorySlug?: CategorySlug;
   locationId?: string;
   title?: string;
@@ -173,6 +174,12 @@ export interface SEOContent {
   keywordDensity?: number;
   wordCount?: number;
   generatorVersion?: string;
+  /** For translations: reference to English source content */
+  sourceContentId?: string;
+  /** Translation provider (nllb, tower, etc.) */
+  translationProvider?: string;
+  /** COMET quality score for translation */
+  translationQualityScore?: number;
   generatedAt: string;
   publishedAt?: string;
   createdAt: string;