feat(gateway): deploy Cloudflare DDNS daemon, wildcard SSL cert, and Caddy HTTPS reverse proxy on 10443

stacks/gateway/Caddyfile

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+# ==============================================================================
+# 家庭公网 HTTPS 统一反向代理网关 (Mac mini: 10443 端口)
+# 证书：/certs/fullchain.pem & /certs/privkey.pem (由 acme.sh 自动续签 *.home.961504.xyz)
+# ==============================================================================
+{
+    auto_https disable_redirects
+}
+
+# 1. 极空间 Z4 NAS (https://z4.home.961504.xyz:10443 或 https://nas.home.961504.xyz:10443)
+nas.home.961504.xyz:10443, z4.home.961504.xyz:10443 {
+    tls /certs/fullchain.pem /certs/privkey.pem
+    encode zstd gzip
+    reverse_proxy 192.168.31.185:5055
+}
+
+# 2. Lucky 控制台 (https://lucky.home.961504.xyz:10443)
+lucky.home.961504.xyz:10443 {
+    tls /certs/fullchain.pem /certs/privkey.pem
+    encode zstd gzip
+    reverse_proxy host.docker.internal:16601
+}
+
+# 3. 路由器 Mihomo / Clash 面板 (https://clash.home.961504.xyz:10443)
+clash.home.961504.xyz:10443 {
+    tls /certs/fullchain.pem /certs/privkey.pem
+    encode zstd gzip
+    reverse_proxy 192.168.31.1:9999
+}

stacks/gateway/docker-compose.yml

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+services:
+  caddy:
+    image: caddy:2-alpine
+    container_name: home-gateway
+    restart: always
+    ports:
+      - "10443:10443/tcp"
+      - "10443:10443/udp"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile:ro
+      - ./certs:/certs:ro
+      - ./caddy_data:/data
+      - ./caddy_config:/config
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+    environment:
+      - TZ=Asia/Shanghai