Gateway: enable canvas host + inject action bridge

src/gateway/client.maxpayload.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, test, vi } from "vitest";
+
+describe("GatewayClient", () => {
+  test("uses a large maxPayload for node snapshots", async () => {
+    vi.resetModules();
+
+    class MockWebSocket {
+      static last: { url: unknown; opts: unknown } | null = null;
+
+      on = vi.fn();
+      close = vi.fn();
+      send = vi.fn();
+
+      constructor(url: unknown, opts: unknown) {
+        MockWebSocket.last = { url, opts };
+      }
+    }
+
+    vi.doMock("ws", () => ({
+      WebSocket: MockWebSocket,
+    }));
+
+    const { GatewayClient } = await import("./client.js");
+    const client = new GatewayClient({ url: "ws://127.0.0.1:1" });
+    client.start();
+
+    expect(MockWebSocket.last?.url).toBe("ws://127.0.0.1:1");
+    expect(MockWebSocket.last?.opts).toEqual(
+      expect.objectContaining({ maxPayload: 25 * 1024 * 1024 }),
+    );
+  });
+});

src/gateway/server.ts

@@ -834,14 +834,18 @@ export async function startGatewayServer(port = 18789): Promise<GatewayServer> {
   const cfgAtStart = loadConfig();
   setCommandLaneConcurrency("cron", cfgAtStart.cron?.maxConcurrentRuns ?? 1);
 
-  if (cfgAtStart.canvasHost?.enabled === true) {
+  const canvasHostEnabled =
+    process.env.CLAWDIS_SKIP_CANVAS_HOST !== "1" &&
+    cfgAtStart.canvasHost?.enabled !== false;
+
+  if (canvasHostEnabled) {
     try {
-      canvasHost = await startCanvasHost({
+      const server = await startCanvasHost({
         runtime: defaultRuntime,
-        rootDir: cfgAtStart.canvasHost.root,
-        port: cfgAtStart.canvasHost.port ?? 18793,
-        bind: cfgAtStart.canvasHost.bind ?? "lan",
+        rootDir: cfgAtStart.canvasHost?.root,
+        port: cfgAtStart.canvasHost?.port ?? 18793,
       });
+      if (server.port > 0) canvasHost = server;
     } catch (err) {
       logWarn(`gateway: canvas host failed to start: ${String(err)}`);
     }