feat(07-unified-service-catalog): add migration and validation scripts

Task 2: Idempotent backfill script (migrate-services.ts)
- Migrates service_catalog (21 rows) → services with migrated_from='service_catalog'
- Migrates offer_services (35 rows) → services with migrated_from='offer_services'
- Name collision detection: appends ' (Offer)' suffix to prevent overwrites
- Idempotent via (migrated_from, migrated_id) lookups — re-runs are safe no-ops
- Categorizes services: 'catalog' for operational pricing, 'offer' for marketing pricing
- Maps service_catalog.description → services.description
- Maps offer_services.transformation_description → services.description
- Maps service_catalog.unit_price → services.unit_price
- Maps offer_services.price → services.unit_price

Task 3: Validation script (validate-services-migration.ts)
- Check 1: Row counts match (service_catalog/offer_services rows == migrated rows)
- Check 2: No orphaned migrated_id references (all point to existing source rows)
- Check 3: Existing quote_items.service_id FKs remain valid (untouched)
- Check 4: Existing offer_micro_services.service_id FKs remain valid (untouched)
- Check 5: Report any unresolved name collisions (post-migration integrity)
- Exits 0 only if all checks PASS

Plus: push-services-migration.ts helper for direct SQL execution when drizzle-kit unavailable.

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

scripts/push-services-migration.ts

@@ -0,0 +1,48 @@
+import postgres from "postgres";
+import { readFileSync } from "fs";
+import { join } from "path";
+
+async function push() {
+  const databaseUrl = process.env.DATABASE_URL;
+  if (!databaseUrl) {
+    console.error("DATABASE_URL environment variable is required");
+    process.exit(1);
+  }
+
+  const client = postgres(databaseUrl);
+
+  try {
+    console.log("Pushing services table migration...");
+
+    // Create the services table
+    await client`
+      CREATE TABLE IF NOT EXISTS services (
+        id text PRIMARY KEY,
+        name text NOT NULL,
+        description text,
+        unit_price numeric(10, 2) NOT NULL,
+        category text,
+        active boolean DEFAULT true NOT NULL,
+        migrated_from text,
+        migrated_id text,
+        created_at timestamp with time zone DEFAULT now() NOT NULL
+      )
+    `;
+
+    console.log("✓ services table created successfully");
+    process.exit(0);
+  } catch (err: unknown) {
+    if (err instanceof Error) {
+      if (err.message.includes("already exists")) {
+        console.log("✓ services table already exists (skipped)");
+        process.exit(0);
+      }
+      console.error("Error pushing migration:", err.message);
+    } else {
+      console.error("Unknown error:", err);
+    }
+    process.exit(1);
+  }
+}
+
+push();