Prepare production branch: remove test files and add Dockerfile

- Remove all test files (__tests__, *.test.*, *.spec.*)
- Remove Jest configuration files (jest.config.js, jest.setup.js)
- Remove test-related scripts from package.json
- Remove Jest dependencies from package.json
- Add production Dockerfile for standalone Next.js app
- Update tsconfig.json exclusions

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

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

package.json

@@ -7,9 +7,6 @@
     "build": "next build",
     "start": "next start -p 3010",
     "lint": "next lint",
-    "test": "jest",
-    "test:watch": "jest --watch",
-    "test:coverage": "jest --coverage",
     "import-bible": "tsx scripts/import-bible.ts",
     "db:migrate": "npx prisma migrate deploy",
     "db:generate": "npx prisma generate",
@@ -70,13 +67,8 @@
     "zustand": "^5.0.8"
   },
   "devDependencies": {
-    "@testing-library/jest-dom": "^6.8.0",
-    "@testing-library/react": "^16.3.0",
     "@types/bcryptjs": "^2.4.6",
     "@types/jsonwebtoken": "^9.0.10",
-    "jest": "^30.1.3",
-    "jest-environment-jsdom": "^30.1.2",
-    "ts-jest": "^29.4.4",
     "tsx": "^4.20.5"
   }
 }