fix: strip output_config for MiniMax (#820)

tests/unit/translator-request-normalization.test.js

@@ -96,6 +96,74 @@ describe("request normalization", () => {
     expect(userMessage.content).toBe("hello\nworld");
   });
 
+  it("translateRequest strips unsupported Anthropic output_config for MiniMax Claude-compatible endpoints", () => {
+    const body = {
+      model: "MiniMax-M2.7",
+      system: [{ type: "text", text: "You are helpful." }],
+      messages: [
+        {
+          role: "user",
+          content: [{ type: "text", text: "continue" }],
+        },
+      ],
+      max_tokens: 1024,
+      output_config: {
+        effort: "medium",
+        format: {
+          type: "json_schema",
+          schema: {
+            type: "object",
+            properties: { title: { type: "string" } },
+            required: ["title"],
+            additionalProperties: false,
+          },
+        },
+      },
+    };
+
+    const result = translateRequest(
+      FORMATS.CLAUDE,
+      FORMATS.CLAUDE,
+      "MiniMax-M2.7",
+      JSON.parse(JSON.stringify(body)),
+      true,
+      null,
+      "minimax",
+    );
+
+    expect(result.output_config).toBeUndefined();
+    expect(result.messages[0].content[0].text).toBe("continue");
+  });
+
+  it("translateRequest preserves output_config for Anthropic Claude", () => {
+    const body = {
+      model: "claude-sonnet-4.5",
+      system: [{ type: "text", text: "You are helpful." }],
+      messages: [
+        {
+          role: "user",
+          content: [{ type: "text", text: "continue" }],
+        },
+      ],
+      max_tokens: 1024,
+      output_config: {
+        format: { type: "json_schema", schema: { type: "object" } },
+      },
+    };
+
+    const result = translateRequest(
+      FORMATS.CLAUDE,
+      FORMATS.CLAUDE,
+      "claude-sonnet-4.5",
+      JSON.parse(JSON.stringify(body)),
+      true,
+      null,
+      "claude",
+    );
+
+    expect(result.output_config).toEqual(body.output_config);
+  });
+
   it("parseSSELine supports provider raw NDJSON stream lines", () => {
     const raw = JSON.stringify({
       model: "gpt-oss:120b",