feat(MCH-016): Add delivery API integration methods

- Add DeliveryZone, CoverageResult, Delivery, CreateDeliveryDto interfaces
- Implement checkDeliveryCoverage() for coordinates-based coverage check
- Implement checkDeliveryCoverageByAddress() for address/colonia-based check
- Add getDeliveryZones() to list active zones
- Add createDelivery() for order delivery creation
- Add getDelivery() and getDeliveryByOrderId() for retrieval
- Add getPendingDeliveries() for pending deliveries list
- Add updateDeliveryStatus() for status transitions

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

src/common/backend-api.service.ts

@@ -103,6 +103,42 @@ export interface FiadosSummary {
   }>;
 }
 
+// ========== DELIVERY INTERFACES ==========
+
+export interface DeliveryZone {
+  id: string;
+  name: string;
+  deliveryFee: number;
+  estimatedTimeMinutes: number;
+  minOrder: number;
+}
+
+export interface CoverageResult {
+  covered: boolean;
+  zone?: DeliveryZone;
+  message?: string;
+}
+
+export interface Delivery {
+  id: string;
+  orderId: string;
+  status: 'pending' | 'assigned' | 'picked_up' | 'in_transit' | 'arrived' | 'delivered' | 'failed' | 'cancelled';
+  deliveryAddress: string;
+  deliveryFee: number;
+  estimatedMinutes?: number;
+  assignedToName?: string;
+  customerPhone?: string;
+  createdAt: string;
+}
+
+export interface CreateDeliveryDto {
+  orderId: string;
+  deliveryAddress: string;
+  deliveryCoordinates?: { lat: number; lng: number };
+  deliveryNotes?: string;
+  customerPhone?: string;
+}
+
 @Injectable()
 export class BackendApiService {
   private readonly logger = new Logger(BackendApiService.name);
@@ -335,6 +371,126 @@ export class BackendApiService {
     }
   }
 
+  // ========== DELIVERY ==========
+
+  async checkDeliveryCoverage(
+    tenantId: string,
+    coordinates: { lat: number; lng: number },
+  ): Promise<CoverageResult> {
+    try {
+      const { data } = await this.client.post('/delivery/check-coverage', {
+        coordinates,
+      }, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to check coverage: ${error.message}`);
+      return { covered: false, message: 'No pudimos verificar la cobertura' };
+    }
+  }
+
+  async checkDeliveryCoverageByAddress(
+    tenantId: string,
+    address: string,
+    colonia?: string,
+  ): Promise<CoverageResult> {
+    try {
+      const { data } = await this.client.post('/delivery/check-coverage/address', {
+        address,
+        colonia,
+      }, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to check coverage by address: ${error.message}`);
+      return { covered: false, message: 'No pudimos verificar la cobertura' };
+    }
+  }
+
+  async getDeliveryZones(tenantId: string): Promise<DeliveryZone[]> {
+    try {
+      const { data } = await this.client.get('/delivery/zones', {
+        headers: this.getTenantHeaders(tenantId),
+        params: { active: 'true' },
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to get delivery zones: ${error.message}`);
+      return [];
+    }
+  }
+
+  async createDelivery(tenantId: string, dto: CreateDeliveryDto): Promise<Delivery> {
+    try {
+      const { data } = await this.client.post('/delivery', dto, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      this.logger.log(`Delivery created for order: ${dto.orderId}`);
+      return data;
+    } catch (error) {
+      this.logger.error(`Failed to create delivery: ${error.message}`);
+      throw error;
+    }
+  }
+
+  async getDelivery(tenantId: string, deliveryId: string): Promise<Delivery | null> {
+    try {
+      const { data } = await this.client.get(`/delivery/${deliveryId}`, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to get delivery: ${error.message}`);
+      return null;
+    }
+  }
+
+  async getDeliveryByOrderId(tenantId: string, orderId: string): Promise<Delivery | null> {
+    try {
+      const { data } = await this.client.get(`/delivery/order/${orderId}`, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to get delivery by order: ${error.message}`);
+      return null;
+    }
+  }
+
+  async getPendingDeliveries(tenantId: string): Promise<Delivery[]> {
+    try {
+      const { data } = await this.client.get('/delivery/pending', {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.warn(`Failed to get pending deliveries: ${error.message}`);
+      return [];
+    }
+  }
+
+  async updateDeliveryStatus(
+    tenantId: string,
+    deliveryId: string,
+    status: Delivery['status'],
+    notes?: string,
+  ): Promise<Delivery> {
+    try {
+      const { data } = await this.client.put(`/delivery/${deliveryId}/status`, {
+        status,
+        notes,
+      }, {
+        headers: this.getTenantHeaders(tenantId),
+      });
+      return data;
+    } catch (error) {
+      this.logger.error(`Failed to update delivery status: ${error.message}`);
+      throw error;
+    }
+  }
+
   // ========== HELPERS ==========
 
   private getTenantHeaders(tenantId: string) {