fix(plugins): forward plugin subagent overrides

src/gateway/server-plugins.test.ts

@@ -51,6 +51,11 @@ function getLastDispatchedContext(): GatewayRequestContext | undefined {
   return call?.context;
 }
 
+function getLastDispatchedParams(): Record<string, unknown> | undefined {
+  const call = handleGatewayRequest.mock.calls.at(-1)?.[0];
+  return call?.req?.params as Record<string, unknown> | undefined;
+}
+
 async function importServerPluginsModule(): Promise<ServerPluginsModule> {
   return import("./server-plugins.js");
 }
@@ -178,6 +183,28 @@ describe("loadGatewayPlugins", () => {
     expect(typeof subagent?.getSession).toBe("function");
   });
 
+  test("forwards provider and model overrides for agent runs", async () => {
+    const serverPlugins = await importServerPluginsModule();
+    const runtime = await createSubagentRuntime(serverPlugins);
+    serverPlugins.setFallbackGatewayContext(createTestContext("forward-overrides"));
+
+    await runtime.run({
+      sessionKey: "s-override",
+      message: "use the override",
+      provider: "anthropic",
+      model: "claude-haiku-4-6",
+      deliver: false,
+    });
+
+    expect(getLastDispatchedParams()).toMatchObject({
+      sessionKey: "s-override",
+      message: "use the override",
+      provider: "anthropic",
+      model: "claude-haiku-4-6",
+      deliver: false,
+    });
+  });
+
   test("can prefer setup-runtime channel plugins during startup loads", async () => {
     const { loadGatewayPlugins } = await importServerPluginsModule();
     loadOpenClawPlugins.mockReturnValue(createRegistry([]));
@@ -236,7 +263,6 @@ describe("loadGatewayPlugins", () => {
     expect(log.error).not.toHaveBeenCalled();
     expect(log.info).not.toHaveBeenCalled();
   });
-
   test("shares fallback context across module reloads for existing runtimes", async () => {
     const first = await importServerPluginsModule();
     const runtime = await createSubagentRuntime(first);

src/gateway/server-plugins.ts

@@ -120,6 +120,8 @@ function createGatewaySubagentRuntime(): PluginRuntime["subagent"] {
         sessionKey: params.sessionKey,
         message: params.message,
         deliver: params.deliver ?? false,
+        ...(params.provider && { provider: params.provider }),
+        ...(params.model && { model: params.model }),
         ...(params.extraSystemPrompt && { extraSystemPrompt: params.extraSystemPrompt }),
         ...(params.lane && { lane: params.lane }),
         ...(params.idempotencyKey && { idempotencyKey: params.idempotencyKey }),