fix: resolve TypeScript build errors in CI/CD pipeline

- Separate production and test TypeScript configurations
- Create tsconfig.test.json for Jest with proper type definitions
- Exclude tests from production build (tsconfig.json includes only src/)
- Update Jest configuration to use test-specific TypeScript config
- Fix "Cannot find type definition file for 'jest'" compilation error
- Fix "Cannot find type definition file for 'node'" production build issue

VALIDATION: npm run build now succeeds, test scripts continue working
IMPACT: Production builds are clean, test development is properly configured

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: minipuft

server/jest.config.cjs

@@ -7,7 +7,9 @@ module.exports = {
     '<rootDir>/tests/**/*.test.ts'
   ],
   transform: {
-    '^.+\\.ts$': 'ts-jest'
+    '^.+\\.ts$': ['ts-jest', {
+      tsconfig: 'tsconfig.test.json'
+    }]
   },
   collectCoverageFrom: [
     'dist/**/*.js',
@@ -19,8 +21,6 @@ module.exports = {
   testTimeout: 30000,
   verbose: true,
   maxWorkers: 1,
-  // Disable setup file for now to avoid ES module issues
-  // setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],
   // Module resolution
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx'],
   // Allow importing .js files from TypeScript

server/tsconfig.json

@@ -4,7 +4,7 @@
     "lib": ["ES2020"],
     "module": "NodeNext",
     "moduleResolution": "NodeNext",
-    "types": ["node", "jest"],
+    "types": ["node"],
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,
     "forceConsistentCasingInFileNames": true,
@@ -16,6 +16,6 @@
     "declaration": true,
     "resolveJsonModule": true
   },
-  "include": ["src/**/*", "tests/**/*"],
-  "exclude": ["node_modules", "dist"]
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist", "tests"]
 } 

server/tsconfig.test.json

@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "types": ["node", "jest"],
+    "noEmit": true
+  },
+  "include": ["src/**/*", "tests/**/*"],
+  "exclude": ["node_modules", "dist"]
+}