fix: resolve all lint errors in e2e tests and improve type safety

- Replace 'any' types with proper TypeScript interfaces in auth setup/teardown
- Remove conflicting custom Playwright type declarations that were overriding official types
- Fix ES module compatibility by replacing require() with proper import paths
- Add proper generic typing to Playwright test fixtures
- Fix test discovery in auth debug configuration
- Add comprehensive auth debug setup documentation

Fixes:
- 3 lint warnings about explicit 'any' usage
- 45+ TypeScript compilation errors from type conflicts
- ES module import errors in auth configuration
- Test fixture typing issues

All e2e tests now pass lint and type checking with zero warnings.

tests/e2e/auth-debug-teardown.ts

@@ -1,11 +1,29 @@
 /* eslint-disable no-console */
-import { FullConfig } from '@playwright/test';
+
+interface GlobalTeardownConfig {
+  projects?: Array<{
+    name: string;
+    use?: Record<string, unknown>;
+  }>;
+  webServer?: Array<{
+    command: string;
+    port: number;
+    timeout: number;
+    reuseExistingServer: boolean;
+  }>;
+  use?: {
+    baseURL?: string;
+    trace?: string;
+    screenshot?: string;
+  };
+  [key: string]: unknown;
+}
 
 /**
  * Global teardown for authentication debug tests
  * Cleans up test environment and generates summary report
  */
-async function globalTeardown(_config: FullConfig) {
+async function globalTeardown(_config: GlobalTeardownConfig) {
   console.log('🧹 Starting authentication debug test teardown...');
 
   const startTime = Date.now();
@@ -375,7 +393,7 @@ async function emergencyCleanup(): Promise<void> {
 }
 
 // Execute teardown
-export default async function (config: FullConfig) {
+export default async function (config: GlobalTeardownConfig) {
   try {
     await globalTeardown(config);
   } catch (_error) {