diff --git a/open-sse/config/providers/registry/volcengine/agent-plan/index.ts b/open-sse/config/providers/registry/volcengine/agent-plan/index.ts
index f34fc84586..6604844efd 100644
--- a/open-sse/config/providers/registry/volcengine/agent-plan/index.ts
+++ b/open-sse/config/providers/registry/volcengine/agent-plan/index.ts
@@ -78,6 +78,7 @@ export const VOLCENGINE_AGENT_PLAN_MODELS: RegistryModel[] = [
     name: "MiniMax M3 (Agent Plan)",
     contextLength: 1048576,
     toolCalling: true,
+    supportsVision: true,
     supportsReasoning: true,
   },
   {
diff --git a/open-sse/config/providers/registry/volcengine/coding-plan/index.ts b/open-sse/config/providers/registry/volcengine/coding-plan/index.ts
index c93bb15a5f..49c2788b7d 100644
--- a/open-sse/config/providers/registry/volcengine/coding-plan/index.ts
+++ b/open-sse/config/providers/registry/volcengine/coding-plan/index.ts
@@ -54,6 +54,7 @@ export const VOLCENGINE_CODING_PLAN_MODELS: RegistryModel[] = [
     name: "MiniMax M3 (Coding Plan)",
     contextLength: 1048576,
     toolCalling: true,
+    supportsVision: true,
     supportsReasoning: true,
   },
   {
diff --git a/tests/unit/antigravity-oauth-postexchange-nonblocking.test.ts b/tests/unit/antigravity-oauth-postexchange-nonblocking.test.ts
index 62104d7412..8a54b49f61 100644
--- a/tests/unit/antigravity-oauth-postexchange-nonblocking.test.ts
+++ b/tests/unit/antigravity-oauth-postexchange-nonblocking.test.ts
@@ -152,7 +152,12 @@ test("postExchange attempts onboarding when projectId is empty and returns disco
     }
     if (u.includes("onboardUser")) {
       onboardUserCalled = true;
-      return jsonRes({ done: true });
+      // Real onboarding success: the body carries a cloudaicompanionProject.
+      // #11284 made that the discriminator — a 200 WITHOUT one is Google BYOP
+      // (no project was created, none ever will be) and short-circuits before
+      // the retry. The id here is deliberately NOT the expected one, so the
+      // assertion below still proves the value came from the retry discovery.
+      return jsonRes({ done: true, cloudaicompanionProject: "onboard-body-project" });
     }
     return jsonRes({});
   }) as typeof fetch;