feat: add Persian error translations and comprehensive test suite

Implement normalized error handling with Persian translations across all
exception types, replace legacy NestJS exceptions with AppException,
and add unit, integration, and smoke tests.

- Add error catalog with gateway-owned codes and Persian messages
- Introduce AppException wrapping normalized error envelopes
- Add translateError helper for automatic messageFa population
- Remove claims module and update provider error normalization
- Add unit tests for error contracts and helper functions
- Add integration tests for admin and inquiry endpoints
- Add smoke tests for real provider connectivity
- Add test support utilities (auth mocks, assertions, app factory)

package.json

@@ -10,9 +10,14 @@
     "start:dev": "nest start --watch",
     "start:prod": "node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
-    "test": "jest",
-    "test:watch": "jest --watch",
-    "test:cov": "jest --coverage",
+    "test": "jest --selectProjects unit integration admin",
+    "test:unit": "jest --selectProjects unit",
+    "test:integration": "jest --selectProjects integration",
+    "test:admin": "jest --selectProjects admin",
+    "test:watch": "jest --selectProjects unit integration admin --watch",
+    "test:cov": "jest --selectProjects unit integration admin --coverage",
+    "smoke": "ESG_SMOKE_ENABLED=true jest --selectProjects smoke --runInBand",
+    "smoke:client": "npm run smoke --",
     "cli:create-super-admin": "ts-node -r tsconfig-paths/register src/cli/create-super-admin.ts"
   },
   "dependencies": {
@@ -60,33 +65,18 @@
     "@types/jest": "^29.5.14",
     "@types/node": "^22.19.19",
     "@types/passport-jwt": "^4.0.1",
+    "@types/supertest": "^7.2.0",
     "@types/uuid": "^10.0.0",
     "@typescript-eslint/eslint-plugin": "^8.18.2",
     "@typescript-eslint/parser": "^8.18.2",
     "eslint": "^9.17.0",
     "jest": "^29.7.0",
     "source-map-support": "^0.5.21",
+    "supertest": "^7.2.2",
     "ts-jest": "^29.2.5",
     "ts-loader": "^9.5.1",
     "ts-node": "^10.9.2",
     "tsconfig-paths": "^4.2.0",
     "typescript": "^5.9.3"
-  },
-  "jest": {
-    "moduleFileExtensions": [
-      "js",
-      "json",
-      "ts"
-    ],
-    "rootDir": "src",
-    "testRegex": ".*\\.spec\\.ts$",
-    "transform": {
-      "^.+\\.(t|j)s$": "ts-jest"
-    },
-    "collectCoverageFrom": [
-      "**/*.(t|j)s"
-    ],
-    "coverageDirectory": "../coverage",
-    "testEnvironment": "node"
   }
 }