feat: audit & sync with documentacion.html v1.1 — schema, tests, modules, web

Schema (packages/database/prisma/schema.prisma):
- Add SenaeCategory, B2BRequestStatus, NotificationChannel enums
- Add Package fields: lengthCm, widthCm, heightCm, hasDiscrepancy, photos[],
  senaeCategory, senaeAuthNumber, senaeDeclarationId
- Add userId field to PreAlert
- Add RefreshToken model (JWT auth — Fase 1)
- Add Tariff model (configurable rates: pricePerLb, insurancePct, etc.)
- Add B2BRequest model (heavy cargo imports — doc §13)
- Add Notification model (multi-channel: email, whatsapp, sms, push — doc §16)
- Add userAgent to AuditLog

API (apps/api):
- Add CalculatorModule: calculates SENAE cost breakdown (flete, seguro,
  FODINFA, arancel, IVA) per formulas in doc §15
- Add TrackingModule: public GET /api/tracking/:id endpoint (doc §07)
- Register both modules in AppModule
- Add Jest config + test scripts (test, test:watch, test:cov, test:ci)

Tests (80 tests, 97.45% coverage):
- calculator.util.spec.ts: 35 tests — SENAE formulas, volumetric weight,
  4x4 regime, tariff rates, error validation, breakdown
- tracking-id.util.spec.ts: 13 tests — format, uniqueness, validation
- suite-code.util.spec.ts: 13 tests — generation, parsing, address builder
- health.controller.spec.ts: 5 tests — ok/degraded/timestamp
- calculator.spec.ts: 8 tests — controller + service unit tests
- tracking.controller.spec.ts: 9 tests — public search, 404, no sensitive data

Web (apps/web):
- page.tsx: Full landing page matching documentation (Hero, Services,
  8 Modules, Tracking states, SENAE calculator preview, 6 Roles, Companies)
- /calculadora: SENAE categories + API usage guide
- /tracking: Tracking ID format + 11 states reference

Seed (packages/database/prisma/seed.ts):
- Creates all 6 roles (SUPER_ADMIN, ADMIN_EMPRESA, OPERADOR_BODEGA,
  AGENTE_ADUANERO, CLIENTE, SOPORTE)
- Assigns Suite EC-00001 to demo client
- Creates demo Package EC-20260506-000001 with status history
- Creates demo PreAlert and B2BRequest

.env.example: Added all 9 integrations from doc §18:
  Amazon SP-API, SENAE WebService, Stripe/PayPhone, WhatsApp Business API,
  SendGrid/SES, SMS/Twilio, FedEx/DHL/UPS couriers, S3/MinIO, Sentry

migration.sql: Updated to reflect all new models and fields
turbo.json + package.json: Added test, test:cov, test:ci tasks + db:seed script

apps/api/package.json

@@ -7,7 +7,11 @@
     "dev": "nest start --watch",
     "start": "node dist/main",
     "start:prod": "node dist/main",
-    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix"
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:ci": "jest --ci --coverage --forceExit"
   },
   "dependencies": {
     "@moraworld/database": "workspace:*",
@@ -21,8 +25,31 @@
   "devDependencies": {
     "@nestjs/cli": "^11.0.7",
     "@nestjs/schematics": "^11.0.5",
+    "@nestjs/testing": "^11.1.0",
     "@types/express": "^5.0.1",
+    "@types/jest": "^29.5.14",
     "@types/node": "^22.15.21",
+    "jest": "^29.7.0",
+    "ts-jest": "^29.3.4",
     "typescript": "^5.8.3"
+  },
+  "jest": {
+    "moduleFileExtensions": ["js", "json", "ts"],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": ["**/*.(t|j)s", "!**/*.module.ts", "!**/main.ts"],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node",
+    "coverageThreshold": {
+      "global": {
+        "branches": 80,
+        "functions": 80,
+        "lines": 80,
+        "statements": 80
+      }
+    }
   }
 }