优化界面布局: 简化短信列表，增强统计信息详情

Changes:
- 短信列表: 简化为列表视图，只显示号码、时间、完整内容
- 统计信息: 最近接收增加详细参数(签名、IP、详情链接)
- 统计信息: 显示从10条增加到20条
- 优化CSS样式，提升可读性

nohup.out

@@ -0,0 +1,15 @@
+[2026-02-06 23:52:11,314] INFO in app: 启动短信接收服务 (环境: development)
+[2026-02-06 23:52:11,314] INFO in app: 启动短信接收服务 (环境: development)
+[2026-02-06 23:52:11,314] INFO in app: 数据库: /root/.openclaw/workspace/sms-receiver/sms_receiver.db
+[2026-02-06 23:52:11,314] INFO in app: 数据库: /root/.openclaw/workspace/sms-receiver/sms_receiver.db
+[2026-02-06 23:52:11,314] INFO in app: 监听端口: 9518
+[2026-02-06 23:52:11,314] INFO in app: 监听端口: 9518
+[2026-02-06 23:52:11,315] INFO in app: 登录已启用: True
+[2026-02-06 23:52:11,315] INFO in app: 登录已启用: True
+ * Serving Flask app 'app'
+ * Debug mode: off
+WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
+ * Running on all addresses (0.0.0.0)
+ * Running on http://127.0.0.1:9518
+ * Running on http://199.188.198.12:9518
+Press CTRL+C to quit