fix: restore minimax tool calling

src/agents/pi-embedded-runner.test.ts

@@ -1,3 +1,6 @@
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
 import type { AgentMessage, AgentTool } from "@mariozechner/pi-agent-core";
 import { SessionManager } from "@mariozechner/pi-coding-agent";
 import { Type } from "@sinclair/typebox";
@@ -8,6 +11,7 @@ import {
   applyGoogleTurnOrderingFix,
   buildEmbeddedSandboxInfo,
   createSystemPromptOverride,
+  runEmbeddedPiAgent,
   splitSdkTools,
 } from "./pi-embedded-runner.js";
 import type { SandboxContext } from "./sandbox.js";
@@ -229,3 +233,57 @@ describe("applyGoogleTurnOrderingFix", () => {
     expect(warn).not.toHaveBeenCalled();
   });
 });
+
+describe("runEmbeddedPiAgent", () => {
+  it("writes models.json into the provided agentDir", async () => {
+    const agentDir = await fs.mkdtemp(
+      path.join(os.tmpdir(), "clawdbot-agent-"),
+    );
+    const workspaceDir = await fs.mkdtemp(
+      path.join(os.tmpdir(), "clawdbot-workspace-"),
+    );
+    const sessionFile = path.join(workspaceDir, "session.jsonl");
+
+    const cfg = {
+      models: {
+        providers: {
+          minimax: {
+            baseUrl: "https://api.minimax.io/v1",
+            api: "openai-completions",
+            apiKey: "sk-minimax-test",
+            models: [
+              {
+                id: "minimax-m2.1",
+                name: "MiniMax M2.1",
+                reasoning: false,
+                input: ["text"],
+                cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
+                contextWindow: 200000,
+                maxTokens: 8192,
+              },
+            ],
+          },
+        },
+      },
+    } satisfies ClawdbotConfig;
+
+    await expect(
+      runEmbeddedPiAgent({
+        sessionId: "session:test",
+        sessionKey: "agent:dev:test",
+        sessionFile,
+        workspaceDir,
+        config: cfg,
+        prompt: "hi",
+        provider: "definitely-not-a-provider",
+        model: "definitely-not-a-model",
+        timeoutMs: 1,
+        agentDir,
+      }),
+    ).rejects.toThrow(/Unknown model:/);
+
+    await expect(
+      fs.stat(path.join(agentDir, "models.json")),
+    ).resolves.toBeTruthy();
+  });
+});