fix(opencode-go): reconcile model protocols with zen (CL-10534)

Author: TheGreatAxios

packages/opencode-go/src/endpoint.test.ts

@@ -16,7 +16,12 @@ describe("protocolForGoModel", () => {
     expect(protocolForGoModel("gpt-5.6-luna")).toBe("responses");
     expect(protocolForGoModel("muse-spark-1.3-contributor")).toBe("responses");
     expect(protocolForGoModel("muse-spark-1.2-contributor")).toBe("responses");
-    expect(protocolForGoModel("minimax-m3")).toBe("messages");
+    expect(protocolForGoModel("minimax-m3")).toBe("chat-completions");
+    expect(protocolForGoModel("minimax-m2.7")).toBe("chat-completions");
+    expect(protocolForGoModel("minimax-m2.5")).toBe("chat-completions");
+    expect(protocolForGoModel("qwen3.8-max")).toBe("chat-completions");
+    expect(protocolForGoModel("grok-4.5")).toBe("responses");
+    expect(protocolForGoModel("qwen3.7-max")).toBe("messages");
   });
 
   test("returns undefined for unknown models", () => {
@@ -25,7 +30,7 @@ describe("protocolForGoModel", () => {
 
   test("catalog covers chat-completions and messages at minimum", () => {
     const protocols = new Set(
-      ["kimi-k2.7-code", "gpt-5.6-luna", "minimax-m3"].map((id) =>
+      ["kimi-k2.7-code", "gpt-5.6-luna", "qwen3.7-max"].map((id) =>
         protocolForGoModel(id),
       ),
     );
@@ -63,12 +68,35 @@ describe("resolveGoEndpoint", () => {
   });
 
   test("routes messages models to anthropic base", () => {
-    const ep = resolveGoEndpoint("minimax-m3");
+    const ep = resolveGoEndpoint("qwen3.7-max");
     expect(ep.adapter).toBe("anthropic");
     expect(ep.protocol).toBe("messages");
     expect(ep.baseURL).toBe("https://opencode.ai/zen/go");
   });
 
+  test("routes MiniMax models to openai-compatible base (CL-10534)", () => {
+    for (const id of ["minimax-m3", "minimax-m2.7", "minimax-m2.5"]) {
+      const ep = resolveGoEndpoint(id);
+      expect(ep.adapter).toBe("openai-compatible");
+      expect(ep.protocol).toBe("chat-completions");
+      expect(ep.baseURL).toContain("/zen/go/v1");
+    }
+  });
+
+  test("routes grok-4.5 to openai-responses adapter (CL-10534)", () => {
+    const ep = resolveGoEndpoint("grok-4.5");
+    expect(ep.adapter).toBe("openai-responses");
+    expect(ep.protocol).toBe("responses");
+    expect(ep.baseURL).toContain("/zen/go/v1");
+  });
+
+  test("routes qwen3.8-max to openai-compatible base (CL-10534)", () => {
+    const ep = resolveGoEndpoint("qwen3.8-max");
+    expect(ep.adapter).toBe("openai-compatible");
+    expect(ep.protocol).toBe("chat-completions");
+    expect(ep.baseURL).toContain("/zen/go/v1");
+  });
+
   test("unknown models default to chat-completions", () => {
     const ep = resolveGoEndpoint("future-model");
     expect(ep.adapter).toBe("openai-compatible");
@@ -135,7 +163,8 @@ describe("buildGoCatalogEntry", () => {
     const entry = buildGoCatalogEntry();
     expect(entry.name).toBe("opencode-go");
     expect(entry.models.length).toBeGreaterThan(0);
-    expect(entry.protocols["minimax-m3"]).toBe("messages");
+    expect(entry.protocols["minimax-m3"]).toBe("chat-completions");
+    expect(entry.protocols["qwen3.7-max"]).toBe("messages");
     expect(entry.protocols["kimi-k2.7-code"]).toBe("chat-completions");
   });
 });

packages/opencode-go/src/models.ts

@@ -12,7 +12,7 @@ interface GoModel {
 }
 
 export const OPENCODE_GO_MODELS = [
-  { id: "grok-4.5", name: "Grok 4.5", protocol: "chat-completions" },
+  { id: "grok-4.5", name: "Grok 4.5", protocol: "responses" },
   { id: "gpt-5.6-luna", name: "GPT 5.6 Luna", protocol: "responses" },
   {
     id: "muse-spark-1.3-contributor",
@@ -45,10 +45,10 @@ export const OPENCODE_GO_MODELS = [
   },
   { id: "mimo-v2.5", name: "MiMo-V2.5", protocol: "chat-completions" },
   { id: "mimo-v2.5-pro", name: "MiMo-V2.5-Pro", protocol: "chat-completions" },
-  { id: "minimax-m3", name: "MiniMax M3", protocol: "messages" },
-  { id: "minimax-m2.7", name: "MiniMax M2.7", protocol: "messages" },
-  { id: "minimax-m2.5", name: "MiniMax M2.5", protocol: "messages" },
-  { id: "qwen3.8-max", name: "Qwen3.8 Max", protocol: "messages" },
+  { id: "minimax-m3", name: "MiniMax M3", protocol: "chat-completions" },
+  { id: "minimax-m2.7", name: "MiniMax M2.7", protocol: "chat-completions" },
+  { id: "minimax-m2.5", name: "MiniMax M2.5", protocol: "chat-completions" },
+  { id: "qwen3.8-max", name: "Qwen3.8 Max", protocol: "chat-completions" },
   { id: "qwen3.7-max", name: "Qwen3.7 Max", protocol: "messages" },
   { id: "qwen3.7-plus", name: "Qwen3.7 Plus", protocol: "messages" },
   { id: "qwen3.6-plus", name: "Qwen3.6 Plus", protocol: "messages" },

src/config/inference-sources.test.ts

@@ -470,6 +470,15 @@ describe("protocol flag routing", () => {
     expect(chat?.baseURL).toBe("https://opencode.ai/zen/go/v1");
     expect(chat?.model).toBe("kimi-k2.7-code");
 
+    const minimax = buildInferenceSourceForRef(
+      { provider: "opencode-go", model: "minimax-m3" },
+      ctx,
+      undefined,
+    );
+    expect(minimax?.provider).toBe("opencode-go");
+    expect(minimax?.baseURL).toBe("https://opencode.ai/zen/go/v1");
+    expect(minimax?.model).toBe("minimax-m3");
+
     const responses = buildInferenceSourceForRef(
       { provider: "opencode-go", model: "gpt-5.6-luna" },
       ctx,
@@ -479,13 +488,13 @@ describe("protocol flag routing", () => {
     expect(responses?.baseURL).toBe("https://opencode.ai/zen/go/v1");
 
     const messages = buildInferenceSourceForRef(
-      { provider: "opencode-go", model: "minimax-m3" },
+      { provider: "opencode-go", model: "qwen3.7-max" },
       ctx,
       undefined,
     );
     expect(messages?.provider).toBe("opencode-go-messages");
     expect(messages?.baseURL).toBe("https://opencode.ai/zen/go");
-    expect(messages?.model).toBe("minimax-m3");
+    expect(messages?.model).toBe("qwen3.7-max");
   });
 });
 

src/provider/cache-ttl.test.ts

@@ -115,7 +115,7 @@ describe("anthropic cache-write stamp", () => {
       }),
       buildGoSource({
         id: "opencode-go",
-        model: "minimax-m3",
+        model: "qwen3.7-max",
         sessionId: "sess-go",
       }),
       buildAnthropicSource({

src/session/cache-ttl-resume.test.ts

@@ -280,7 +280,7 @@ describe("resumed Anthropic cache write does not compact", () => {
       }),
       buildGoSource({
         id: "opencode-go",
-        model: "minimax-m3",
+        model: "qwen3.7-max",
         sessionId: "sess-go",
       }),
       buildAnthropicSource({