fix: set codex oauth model default

src/agents/model-auth.test.ts

@@ -87,4 +87,76 @@ describe("getApiKeyForModel", () => {
       await fs.rm(tempDir, { recursive: true, force: true });
     }
   });
+
+  it("suggests openai-codex when only Codex OAuth is configured", async () => {
+    const previousStateDir = process.env.CLAWDBOT_STATE_DIR;
+    const previousAgentDir = process.env.CLAWDBOT_AGENT_DIR;
+    const previousPiAgentDir = process.env.PI_CODING_AGENT_DIR;
+    const previousOpenAiKey = process.env.OPENAI_API_KEY;
+    const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-auth-"));
+
+    try {
+      delete process.env.OPENAI_API_KEY;
+      process.env.CLAWDBOT_STATE_DIR = tempDir;
+      process.env.CLAWDBOT_AGENT_DIR = path.join(tempDir, "agent");
+      process.env.PI_CODING_AGENT_DIR = process.env.CLAWDBOT_AGENT_DIR;
+
+      const authProfilesPath = path.join(
+        tempDir,
+        "agent",
+        "auth-profiles.json",
+      );
+      await fs.mkdir(path.dirname(authProfilesPath), {
+        recursive: true,
+        mode: 0o700,
+      });
+      await fs.writeFile(
+        authProfilesPath,
+        `${JSON.stringify(
+          {
+            version: 1,
+            profiles: {
+              "openai-codex:default": {
+                type: "oauth",
+                provider: "openai-codex",
+                ...oauthFixture,
+              },
+            },
+          },
+          null,
+          2,
+        )}\n`,
+        "utf8",
+      );
+
+      vi.resetModules();
+      const { resolveApiKeyForProvider } = await import("./model-auth.js");
+
+      await expect(
+        resolveApiKeyForProvider({ provider: "openai" }),
+      ).rejects.toThrow(/openai-codex\/gpt-5\\.2/);
+    } finally {
+      if (previousOpenAiKey === undefined) {
+        delete process.env.OPENAI_API_KEY;
+      } else {
+        process.env.OPENAI_API_KEY = previousOpenAiKey;
+      }
+      if (previousStateDir === undefined) {
+        delete process.env.CLAWDBOT_STATE_DIR;
+      } else {
+        process.env.CLAWDBOT_STATE_DIR = previousStateDir;
+      }
+      if (previousAgentDir === undefined) {
+        delete process.env.CLAWDBOT_AGENT_DIR;
+      } else {
+        process.env.CLAWDBOT_AGENT_DIR = previousAgentDir;
+      }
+      if (previousPiAgentDir === undefined) {
+        delete process.env.PI_CODING_AGENT_DIR;
+      } else {
+        process.env.PI_CODING_AGENT_DIR = previousPiAgentDir;
+      }
+      await fs.rm(tempDir, { recursive: true, force: true });
+    }
+  });
 });