feat: add rawTranscriptContent field to SessionImport model

feat: enhance server initialization with environment validation and import processing scheduler

test: add Jest setup for unit tests and mock console methods

test: implement unit tests for environment management and validation

test: create unit tests for transcript fetcher functionality

tests/setup.ts

@@ -0,0 +1,25 @@
+// Jest test setup
+import { jest } from '@jest/globals';
+
+// Mock console methods to reduce noise in tests
+global.console = {
+  ...console,
+  log: jest.fn(),
+  warn: jest.fn(),
+  error: jest.fn(),
+};
+
+// Set test environment variables
+Object.defineProperty(process.env, 'NODE_ENV', {
+  value: 'test',
+  writable: true,
+  configurable: true,
+});
+process.env.NEXTAUTH_SECRET = 'test-secret';
+process.env.NEXTAUTH_URL = 'http://localhost:3000';
+
+// Mock node-fetch for transcript fetcher tests
+jest.mock('node-fetch', () => ({
+  __esModule: true,
+  default: jest.fn(),
+}));