Add Mac client mode and simplify local proxy UI

docker-compose.client.yml

@@ -0,0 +1,36 @@
+services:
+  vpn-proxy-client:
+    build:
+      context: .
+      dockerfile: Dockerfile.client
+      args:
+        SINGBOX_VERSION: ${SINGBOX_VERSION:-1.12.13}
+    container_name: vpn-proxy-client
+    environment:
+      APP_MODE: client
+      PORT: ${PORT:-3456}
+      PROXY_PORT: ${PROXY_PORT:-8080}
+      PROXY_BIND_IP: 0.0.0.0
+      DATA_DIR: /var/lib/vpn-proxy
+      SING_BOX_CONFIG: /etc/sing-box/config.json
+      SING_BOX_CACHE: /var/lib/sing-box/cache.db
+      ROUTING_RU_DIRECT: ${ROUTING_RU_DIRECT:-true}
+      RULE_SET_DOWNLOAD_DETOUR: ${RULE_SET_DOWNLOAD_DETOUR:-vpn}
+      LOG_LEVEL: ${LOG_LEVEL:-info}
+    ports:
+      - "127.0.0.1:${CLIENT_UI_PORT:-3456}:${PORT:-3456}"
+      - "127.0.0.1:${CLIENT_PROXY_PORT:-8080}:${PROXY_PORT:-8080}"
+    volumes:
+      - vpn-proxy-client-data:/var/lib/vpn-proxy
+      - sing-box-client-cache:/var/lib/sing-box
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:${PORT:-3456}/api/state"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s
+
+volumes:
+  vpn-proxy-client-data:
+  sing-box-client-cache: