diff --git a/gateway/src/IntegrationGateway.Host/Program.cs b/gateway/src/IntegrationGateway.Host/Program.cs
index 1760df1..930aba9 100644
--- a/gateway/src/IntegrationGateway.Host/Program.cs
+++ b/gateway/src/IntegrationGateway.Host/Program.cs
@@ -1,6 +1,178 @@
+using IntegrationGateway.Core.Abstractions;
+using IntegrationGateway.Core.Infrastructure;
+using IntegrationGateway.Core.Models;
+
 var builder = WebApplication.CreateBuilder(args);
+
+// 注册 IHttpClientFactory
+builder.Services.AddHttpClient("VolPro", c =>
+{
+    c.Timeout = TimeSpan.FromSeconds(30);
+    c.DefaultRequestHeaders.Add("Accept", "application/json");
+}).ConfigurePrimaryHttpMessageHandler(() => new SocketsHttpHandler
+{
+    PooledConnectionLifetime = TimeSpan.FromMinutes(5),
+    MaxConnectionsPerServer = 10
+});
+
 var app = builder.Build();
 
-app.MapGet("/", () => "Hello World!");
+// 读取配置
+var gwCfg = app.Configuration.GetSection("Gateway");
+var owlCfg = app.Configuration.GetSection("Owl");
+var mc4Cfg = app.Configuration.GetSection("MC4");
+
+// 创建适配器注册中心
+var registry = new AdapterRegistry();
+
+// 创建 VolPro 客户端工厂
+var volProUrl = gwCfg["VolProBaseUrl"] ?? "http://localhost:9100";
+var httpFactory = app.Services.GetRequiredService<IHttpClientFactory>();
+var clientFactory = new GatewayClientFactory(httpFactory, volProUrl);
+
+// 适配器将在 Phase G2/G3 注册，此处预留
+Console.WriteLine("[Gateway] AdapterRegistry initialized, awaiting adapters...");
+
+// ═══ B 组路由 ═══
+
+// B1: 健康检查
+app.MapGet("/api/gateway/health", async () =>
+{
+    var results = new List<object>();
+    foreach (var a in registry.All)
+    {
+        bool healthy = false;
+        try { healthy = await a.HealthCheckAsync(); } catch { }
+        results.Add(new { a.AdapterCode, a.DisplayName, Healthy = healthy, a.Capabilities });
+    }
+    return Results.Ok(results);
+});
+
+// B2: 设备列表
+app.MapGet("/api/gateway/devices", async (string adapter, int page, int size, string? keyword) =>
+{
+    var a = registry.FindByCode<IHasFlatDevices>(adapter);
+    if (a == null) return Results.NotFound(new { error = "ADAPTER_NOT_FOUND", message = $"Adapter '{adapter}' not found or does not support flat devices" });
+    return Results.Ok(await a.GetDevicesAsync(page, size, keyword));
+});
+
+// B3: 对象树
+app.MapGet("/api/gateway/tree", async (string adapter) =>
+{
+    var a = registry.FindByCode<IHasOwnDeviceTree>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED", message = $"Tree not supported by '{adapter}'" });
+    return Results.Ok(await a.GetObjectTreeAsync());
+});
+
+// B6a: 实时流
+app.MapGet("/api/gateway/streams/{adapter}/{deviceId}/live", async (string adapter, string deviceId) =>
+{
+    var a = registry.FindByCode<IHasStreams>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED", message = $"Streams not supported by '{adapter}'" });
+    var result = await a.GetLiveUrlAsync(deviceId);
+    return result.WsFlv == null && result.Hls == null
+        ? Results.Problem("No stream URL returned", statusCode: 502)
+        : Results.Ok(result);
+});
+
+// B6b: 回放
+app.MapGet("/api/gateway/streams/{adapter}/{deviceId}/playback", async (string adapter, string deviceId, DateTime start, DateTime end) =>
+{
+    var a = registry.FindByCode<IHasStreams>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    return Results.Ok(await a.GetPlaybackUrlAsync(deviceId, start, end));
+});
+
+// 截图
+app.MapPost("/api/gateway/streams/{adapter}/{deviceId}/snapshot", async (string adapter, string deviceId) =>
+{
+    var a = registry.FindByCode<IHasStreams>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    return Results.Ok(await a.GetSnapshotAsync(deviceId));
+});
+
+// B7: PTZ
+app.MapPost("/api/gateway/streams/{adapter}/{deviceId}/ptz", async (string adapter, string deviceId, PtzRequest req) =>
+{
+    var a = registry.FindByCode<IHasStreams>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    if (req.Action == "stop") await a.PtzStopAsync(deviceId);
+    else await a.PtzControlAsync(deviceId, req.Direction ?? "stop", req.Speed);
+    return Results.Ok();
+});
+
+// B4: 实时点值
+app.MapGet("/api/gateway/realtime/{adapter}/{deviceId}", async (string adapter, string deviceId) =>
+{
+    var a = registry.FindByCode<IHasPoints>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    return Results.Ok(await a.GetRealtimeValuesAsync(deviceId));
+});
+
+// B5: 控制
+app.MapPost("/api/gateway/realtime/{adapter}/control", async (string adapter, ControlRequest req) =>
+{
+    var a = registry.FindByCode<IHasPoints>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    await a.SetPointValueAsync(req.DeviceId ?? "", req.PointIndex, req.Value);
+    return Results.Ok();
+});
+
+// B8: 告警查询
+app.MapGet("/api/gateway/alarms/{adapter}", async (string adapter, int page, int size, DateTime from, DateTime to, string? level, string? state) =>
+{
+    var a = registry.FindByCode<IHasAlarms>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    return Results.Ok(await a.GetAlarmsAsync(page, size, from, to, level, state));
+});
+
+// B9: 告警确认
+app.MapPost("/api/gateway/alarms/{adapter}/{alarmId}/confirm", async (string adapter, string alarmId) =>
+{
+    var a = registry.FindByCode<IHasAlarms>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    await a.ConfirmAlarmAsync(alarmId);
+    return Results.Ok();
+});
+
+// 告警结束
+app.MapPost("/api/gateway/alarms/{adapter}/{alarmId}/end", async (string adapter, string alarmId) =>
+{
+    var a = registry.FindByCode<IHasAlarms>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    await a.EndAlarmAsync(alarmId);
+    return Results.Ok();
+});
+
+// 录像
+app.MapGet("/api/gateway/recordings/{adapter}/{deviceId}", async (string adapter, string deviceId, DateTime start, DateTime end, int page, int size) =>
+{
+    var a = registry.FindByCode<IHasRecordings>(adapter);
+    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
+    return Results.Ok(await a.GetRecordingsAsync(deviceId, start, end, page, size));
+});
+
+// B3: 手动同步
+app.MapPost("/api/gateway/devices/sync", async (string adapter) =>
+{
+    var a = registry.FindByCode<IGatewayAdapter>(adapter);
+    if (a == null) return Results.NotFound(new { error = "ADAPTER_NOT_FOUND" });
+    // 根据适配器能力触发对应同步
+    if (a is IHasOwnDeviceTree tree)
+    {
+        var obj = await tree.GetObjectTreeAsync();
+        return Results.Ok(new { nodeCount = obj.Count, message = "tree synced" });
+    }
+    if (a is IHasFlatDevices flat)
+    {
+        var dev = await flat.GetDevicesAsync(1, 1000);
+        return Results.Ok(new { deviceCount = dev.Total, message = "devices synced" });
+    }
+    return Results.Ok(new { message = "no sync needed" });
+});
 
 app.Run();
+
+// 请求 DTO
+record PtzRequest(string? Direction, string Action, float Speed);
+record ControlRequest(string? DeviceId, int PointIndex, double Value);
diff --git a/gateway/src/IntegrationGateway.Host/appsettings.json b/gateway/src/IntegrationGateway.Host/appsettings.json
index 10f68b8..7f9cbd8 100644
--- a/gateway/src/IntegrationGateway.Host/appsettings.json
+++ b/gateway/src/IntegrationGateway.Host/appsettings.json
@@ -5,5 +5,19 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
-}
+  "Owl": {
+    "BaseUrl": "http://localhost:15123",
+    "Username": "admin",
+    "Password": "your_owl_password"
+  },
+  "MC4": {
+    "BaseUrl": "http://localhost:3000"
+  },
+  "Gateway": {
+    "VolProBaseUrl": "http://localhost:9100",
+    "NodeCode": "gw-31ku",
+    "NodeToken": "changeme",
+    "HeartbeatIntervalSec": 15,
+    "AdapterInitTimeoutSec": 30
+  }
+}
\ No newline at end of file