feat: add type-specific metadata and expiration badges to documents UX (refs #43)

- Create ExpirationBadge component with 30-day warning and expired states
- Create DocumentCardMetadata component for type-specific field display
- Update DocumentsPage to show metadata and expiration badges on cards
- Update DocumentsMobileScreen with metadata and badges (mobile variant)
- Redesign DocumentDetailPage with side-by-side layout (desktop) and
  stacked layout (mobile) showing full metadata panel
- Add 33 unit tests for new components
- Fix jest.config.ts testMatch pattern for test discovery

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/jest.config.ts

@@ -2,7 +2,6 @@
  * Jest configuration for MotoVaultPro frontend (React + TS, ESM)
  */
 import type { Config } from 'jest';
-const { createDefaultPreset } = require('ts-jest/presets');
 
 const tsJestTransformCfg = {
   tsconfig: 'tsconfig.json',
@@ -14,7 +13,6 @@ const config: Config = {
   roots: ['<rootDir>/src'],
   extensionsToTreatAsEsm: ['.ts', '.tsx'],
   transform: {
-    ...createDefaultPreset().transform,
     '^.+\\.(ts|tsx)$': ['ts-jest', tsJestTransformCfg],
   },
   moduleNameMapper: {
@@ -23,7 +21,7 @@ const config: Config = {
     '\\.(svg|png|jpg|jpeg|gif)$': '<rootDir>/test/__mocks__/fileMock.js',
   },
   setupFilesAfterEnv: ['<rootDir>/setupTests.ts'],
-  testMatch: ['**/?(*.)+(test).[tj]sx?'],
+  testMatch: ['**/*.test.ts', '**/*.test.tsx'],
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
   testPathIgnorePatterns: ['/node_modules/', '/dist/'],
   reporters: [