devops: 备案通过回切 https 域名 + 流水线 Ali 单轨

- nginx-jiu-ali.conf：443 ssl+http2 正式入口（HSTS/XFO/nosniff 安全头、
  ACME webroot 续期通道、80→443 跳转）；8443 明文过渡口拆除
- 客户端构建 URL 全量回切 https://jiu.51yanmei.com（compile×5/local_test/
  release-client/notify）
- 流水线去 EC2：deploy-client/site 单轨 Ali、manual 回滚与每日备份切 ali、
  seed/reset/debug-db 改容器内取密码（SEC-003，退役 DB_PASSWORD secret）

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JJ1g8XV1YhhmHRzhwWEW7o

scripts/ci/release-client.sh

@@ -28,7 +28,7 @@ ver            = sys.argv[1]
 notes          = sys.argv[2]
 changelog_file = sys.argv[3]
 
-base = "https://jiu.51yanmei.com/downloads"
+base = "https://jiu.51yanmei.com/downloads"  # 2026-07-03 备案通过回切 https 域名
 mac_url     = f"{base}/jiu-macos-x64.zip"
 win_url     = f"{base}/jiu-windows-x64-setup.exe"
 android_url = f"{base}/jiu-android.apk"