fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

website/jest.config.js

@@ -0,0 +1,23 @@
+/** @type {import('jest').Config} */
+const config = {
+  testEnvironment: 'node',
+  roots: ['<rootDir>/tests'],
+  testMatch: ['**/*.test.ts'],
+  transform: {
+    '^.+\\.ts$': 'ts-jest',
+  },
+  moduleFileExtensions: ['ts', 'js', 'json'],
+  // Ignore node_modules and .next
+  testPathIgnorePatterns: ['/node_modules/', '/.next/'],
+  // Clear mocks between tests
+  clearMocks: true,
+  // Coverage configuration
+  collectCoverageFrom: [
+    'app/**/*.{ts,tsx}',
+    'components/**/*.{ts,tsx}',
+    'lib/**/*.{ts,tsx}',
+    '!**/*.d.ts',
+  ],
+}
+
+module.exports = config