Ship legacy migrate APIs, portfolio/blog old-id schema, and admin migrate/purge flows.

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/042_business_old_business_id.sql

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+-- Link Meshkee businesses to legacy WillaEngine business ids for selective migration
+
+ALTER TABLE businesses
+  ADD COLUMN IF NOT EXISTS old_business_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS businesses_old_business_id_unique
+  ON businesses (old_business_id)
+  WHERE old_business_id IS NOT NULL;

database/migrations/043_categories_old_id.sql

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+-- Link content categories to legacy WillaEngine category ids (per entity type)
+ALTER TABLE categories
+  ADD COLUMN IF NOT EXISTS old_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS categories_business_entity_old_id_unique
+  ON categories (business_id, entity_type, old_id)
+  WHERE old_id IS NOT NULL;

database/migrations/044_portfolios_media_old_id.sql

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+-- Link migrated portfolios / media to legacy WillaEngine ids
+ALTER TABLE portfolios
+  ADD COLUMN IF NOT EXISTS old_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS portfolios_business_old_id_unique
+  ON portfolios (business_id, old_id)
+  WHERE old_id IS NOT NULL;
+
+ALTER TABLE media
+  ADD COLUMN IF NOT EXISTS old_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS media_business_old_id_unique
+  ON media (business_id, old_id)
+  WHERE old_id IS NOT NULL;

database/migrations/045_portfolios_title_fa_en.sql

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+-- Bilingual portfolio titles (legacy name / name_en)
+ALTER TABLE portfolios
+  ADD COLUMN IF NOT EXISTS title_fa VARCHAR(255);
+
+ALTER TABLE portfolios
+  ADD COLUMN IF NOT EXISTS title_en VARCHAR(255);
+
+-- Existing rows: FA from title; EN from content.nameEn when present
+UPDATE portfolios
+SET title_fa = title
+WHERE title_fa IS NULL;
+
+UPDATE portfolios
+SET title_en = NULLIF(BTRIM(content->>'nameEn'), '')
+WHERE title_en IS NULL
+  AND content ? 'nameEn';
+
+-- Keep title as the primary FA display title
+UPDATE portfolios
+SET title = COALESCE(NULLIF(BTRIM(title_fa), ''), title)
+WHERE title_fa IS NOT NULL;

database/migrations/046_blogs_old_id.sql

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+-- Link migrated blogs to legacy WillaEngine article ids
+ALTER TABLE blogs
+  ADD COLUMN IF NOT EXISTS old_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS blogs_business_old_id_unique
+  ON blogs (business_id, old_id)
+  WHERE old_id IS NOT NULL;

database/migrations/047_customer_entity_users_old_id_blogs_unique.sql

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+-- Customer categories (entity_type) + user legacy ids + blogs old_id unique per post_type
+
+ALTER TYPE media_entity_type ADD VALUE IF NOT EXISTS 'customer';
+
+ALTER TABLE users
+  ADD COLUMN IF NOT EXISTS old_id BIGINT;
+
+CREATE UNIQUE INDEX IF NOT EXISTS users_old_id_unique
+  ON users (old_id)
+  WHERE old_id IS NOT NULL;
+
+-- Articles and news can share numeric ids; scope uniqueness by post_type
+DROP INDEX IF EXISTS blogs_business_old_id_unique;
+
+CREATE UNIQUE INDEX IF NOT EXISTS blogs_business_post_type_old_id_unique
+  ON blogs (business_id, post_type, old_id)
+  WHERE old_id IS NOT NULL;

database/migrations/048_portfolios_author_id.sql

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+-- Portfolio authors (same pattern as blogs.author_id)
+ALTER TABLE portfolios
+  ADD COLUMN IF NOT EXISTS author_id BIGINT;
+
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1
+    FROM pg_constraint
+    WHERE conname = 'portfolios_author_id_fkey'
+  ) THEN
+    ALTER TABLE portfolios
+      ADD CONSTRAINT portfolios_author_id_fkey
+      FOREIGN KEY (author_id) REFERENCES users (id)
+      ON UPDATE NO ACTION
+      ON DELETE SET NULL;
+  END IF;
+END $$;
+
+CREATE INDEX IF NOT EXISTS idx_portfolios_author_id ON portfolios (author_id);