test(cache): 修复CacheConfigTest边界值测试

- 修改 shouldVerifyCacheManager_withMaximumIntegerTtl 为 shouldVerifyCacheManager_withMaximumAllowedTtl
- 使用正确的最大TTL值（10080分钟，7天）而不是 Integer.MAX_VALUE
- 新增 shouldThrowException_whenTtlExceedsMaximum 测试验证边界检查
- 所有1266个测试用例通过
- 覆盖率: 指令81.89%, 行88.48%, 分支51.55%

docs: 添加项目状态报告
- 生成 PROJECT_STATUS_REPORT.md 详细记录项目当前状态
- 包含质量指标、已完成功能、待办事项和技术债务

frontend/playwright.config.ts

@@ -0,0 +1,31 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './e2e/tests',
+  testMatch: '*.spec.ts',
+  fullyParallel: false,
+  workers: 1,
+  retries: 0,
+  reporter: [['list']],
+  
+  use: {
+    baseURL: 'http://localhost:5173',
+    trace: 'off',
+    screenshot: 'off',
+    video: 'off',
+    actionTimeout: 15000,
+    navigationTimeout: 30000,
+  },
+
+  projects: [
+    {
+      name: 'chromium',
+      use: { 
+        ...devices['Desktop Chrome'],
+        launchOptions: {
+          args: ['--no-sandbox', '--disable-setuid-sandbox']
+        }
+      },
+    },
+  ],
+});