chore: import upstream snapshot with attribution

tests/unit/codebuddy-reasoning-optin.test.ts

@@ -0,0 +1,43 @@
+// #2071 — CodeBuddy forced reasoning_effort:"medium" + reasoning_summary:"auto"
+// on requests where the client never asked for reasoning, tripping CodeBuddy's
+// content filter ("model return error"). Reasoning params must be opt-in.
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import { CodeBuddyCnExecutor } from "../../open-sse/executors/codebuddy-cn.ts";
+
+describe("CodeBuddyCnExecutor reasoning params are opt-in (#2071)", () => {
+  const exec = new CodeBuddyCnExecutor();
+
+  it("does NOT force reasoning when the client did not request it", () => {
+    const out = exec.transformRequest(
+      "glm-5.2",
+      { messages: [{ role: "user", content: "hi" }] },
+      false,
+      {}
+    ) as Record<string, unknown>;
+    assert.equal(out.reasoning_effort, undefined);
+    assert.equal(out.reasoning_summary, undefined);
+  });
+
+  it("mirrors reasoning_summary:auto when the client explicitly requested reasoning", () => {
+    const out = exec.transformRequest(
+      "glm-5.2",
+      { messages: [{ role: "user", content: "hi" }], reasoning_effort: "high" },
+      false,
+      {}
+    ) as Record<string, unknown>;
+    assert.equal(out.reasoning_effort, "high");
+    assert.equal(out.reasoning_summary, "auto");
+  });
+
+  it("omits reasoning_effort for none/off and adds no reasoning_summary", () => {
+    const out = exec.transformRequest(
+      "glm-5.2",
+      { messages: [{ role: "user", content: "hi" }], reasoning_effort: "none" },
+      false,
+      {}
+    ) as Record<string, unknown>;
+    assert.equal(out.reasoning_effort, undefined);
+    assert.equal(out.reasoning_summary, undefined);
+  });
+});