feat: anvil_transfer_pricing 동기화 로직 추가

- syncAnvilTransferPricing 메서드 구현
- 프로바이더별 도매 비용: Linode $0.005/GB, Vultr $0.01/GB, AWS $0.09/GB
- 소매 가격 계산: cost × 1.21 (21% 마진)
- Stage 8.5에서 자동 실행

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

src/services/sync.ts

@@ -377,6 +377,21 @@ export class SyncOrchestrator {
         });
       }
 
+      // Stage 8.5: Sync Anvil Transfer Pricing
+      let anvilTransferPricingCount = 0;
+      try {
+        anvilTransferPricingCount = await this.syncAnvilTransferPricing(provider);
+        if (anvilTransferPricingCount > 0) {
+          this.logger.info(`${provider} → SYNC_ANVIL_TRANSFER_PRICING`, { anvil_transfer_pricing: anvilTransferPricingCount });
+        }
+      } catch (transferError) {
+        // Log error but don't fail the entire sync
+        this.logger.error('Anvil transfer pricing sync failed', {
+          provider,
+          error: transferError instanceof Error ? transferError.message : String(transferError)
+        });
+      }
+
       // Stage 9: Complete - Update provider status to success
       stage = SyncStage.COMPLETE;
       await this.repos.providers.updateSyncStatus(provider, 'success');
@@ -1121,6 +1136,84 @@ export class SyncOrchestrator {
     }
   }
 
+  /**
+   * Synchronize Anvil transfer pricing based on source provider
+   *
+   * Updates anvil_transfer_pricing table with retail transfer costs
+   * Formula: retail = cost × 1.21 (21% margin)
+   *
+   * Provider costs (per GB):
+   * - Linode: $0.005/GB
+   * - Vultr: $0.01/GB
+   * - AWS: $0.09/GB (Asia regions)
+   *
+   * @param provider - Source provider name (linode, vultr, aws)
+   * @returns Number of anvil_transfer_pricing records updated
+   */
+  private async syncAnvilTransferPricing(provider: string): Promise<number> {
+    this.logger.info('Starting Anvil transfer pricing sync', { provider });
+
+    try {
+      // Step 1: Define provider costs per GB (wholesale)
+      const providerCosts: Record<string, number> = {
+        linode: 0.005,  // $0.005/GB
+        vultr: 0.01,    // $0.01/GB
+        aws: 0.09,      // $0.09/GB (Asia regions)
+      };
+
+      const costPerGb = providerCosts[provider.toLowerCase()];
+      if (!costPerGb) {
+        this.logger.info('No transfer pricing defined for provider', { provider });
+        return 0;
+      }
+
+      // Step 2: Find all anvil_regions sourced from this provider
+      const anvilRegionsResult = await this.repos.db
+        .prepare('SELECT id, source_region_id FROM anvil_regions WHERE source_provider = ?')
+        .bind(provider)
+        .all<{ id: number; source_region_id: number }>();
+
+      if (!anvilRegionsResult.success || anvilRegionsResult.results.length === 0) {
+        this.logger.info('No anvil_regions found for provider', { provider });
+        return 0;
+      }
+
+      const anvilRegions = anvilRegionsResult.results;
+      this.logger.info('Found anvil_regions for transfer pricing', {
+        provider,
+        count: anvilRegions.length
+      });
+
+      // Step 3: Calculate retail price (cost × 1.21 for 21% margin)
+      const retailPricePerGb = costPerGb * 1.21;
+
+      // Step 4: Prepare upsert data for all regions
+      const transferPricingData = anvilRegions.map(region => ({
+        anvil_region_id: region.id,
+        price_per_gb: retailPricePerGb,
+      }));
+
+      // Step 5: Batch upsert using repository
+      const upsertCount = await this.repos.anvilTransferPricing.upsertMany(transferPricingData);
+
+      this.logger.info('Anvil transfer pricing sync completed', {
+        provider,
+        cost_per_gb: costPerGb,
+        retail_price_per_gb: retailPricePerGb,
+        regions_updated: upsertCount,
+      });
+
+      return upsertCount;
+
+    } catch (error) {
+      this.logger.error('Anvil transfer pricing sync failed', {
+        provider,
+        error: error instanceof Error ? error.message : String(error)
+      });
+      throw error;
+    }
+  }
+
   /**
    * Create connector for a specific provider
    *