feat: HomeDash - unified self-hosted navigation portal

Single-container navigation service combining:
- Dashy dashboard + SearXNG metasearch + history sync API + admin WebUI
- Go services for history/admin APIs, nginx as unified entry
- Browser extensions (Chrome MV3 / Firefox MV2) with 30s batched sync
- Production guide: portal-nginx unified auth reverse proxy + webui4frpc/frp tunnel
- Fully sanitized (no internal IPs/domains/credentials)

docker-compose.yml

@@ -0,0 +1,32 @@
+version: "3.8"
+
+services:
+  navi:
+    build: .
+    container_name: jianf-navi
+    image: jianf-navi:latest
+    restart: unless-stopped
+    ports:
+      - "3003:8080"
+    volumes:
+      - ./data:/app/data
+    environment:
+      # 设置后，浏览器插件同步和管理 UI 的写操作需要此令牌
+      - NAVI_SYNC_TOKEN=${NAVI_SYNC_TOKEN:-}
+      # 设置后，管理 API 的写操作需要此令牌
+      - NAVI_ADMIN_TOKEN=${NAVI_ADMIN_TOKEN:-}
+    healthcheck:
+      test: ["CMD", "wget", "-q", "--spider", "http://localhost:8080/healthz"]
+      interval: 30s
+      timeout: 5s
+      start_period: 30s
+      retries: 3
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+
+# 使用方式：
+# 1. 复制 .env.example 为 .env 并修改
+# 2. docker compose up -d
+# 3. 访问 http://your-ip:3003