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>

jest.config.js

@@ -1,33 +0,0 @@
-const nextJest = require('next/jest')
-
-const createJestConfig = nextJest({
-  // Provide the path to your Next.js app to load next.config.js and .env files
-  dir: './',
-})
-
-// Add any custom config to be passed to Jest
-const customJestConfig = {
-  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
-  testEnvironment: 'jest-environment-jsdom',
-  moduleNameMapper: {
-    '^@/(.*)$': '<rootDir>/$1',
-  },
-  testMatch: ['**/__tests__/**/*.test.ts', '**/__tests__/**/*.test.tsx'],
-  collectCoverageFrom: [
-    '**/*.{ts,tsx}',
-    '!**/*.d.ts',
-    '!**/node_modules/**',
-    '!**/.next/**',
-    '!**/coverage/**',
-    '!jest.config.js',
-    '!jest.setup.js',
-  ],
-  coverageReporters: ['text', 'lcov', 'html'],
-  transform: {
-    '^.+\\.(ts|tsx)$': 'ts-jest',
-  },
-  testTimeout: 10000,
-}
-
-// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
-module.exports = createJestConfig(customJestConfig)