fix: accept Z_AI_API_KEY for zai

src/agents/model-auth.test.ts

@@ -199,4 +199,35 @@ describe("getApiKeyForModel", () => {
       }
     }
   });
+
+  it("accepts legacy Z_AI_API_KEY for zai", async () => {
+    const previousZai = process.env.ZAI_API_KEY;
+    const previousLegacy = process.env.Z_AI_API_KEY;
+
+    try {
+      delete process.env.ZAI_API_KEY;
+      process.env.Z_AI_API_KEY = "zai-test-key";
+
+      vi.resetModules();
+      const { resolveApiKeyForProvider } = await import("./model-auth.js");
+
+      const resolved = await resolveApiKeyForProvider({
+        provider: "zai",
+        store: { version: 1, profiles: {} },
+      });
+      expect(resolved.apiKey).toBe("zai-test-key");
+      expect(resolved.source).toContain("Z_AI_API_KEY");
+    } finally {
+      if (previousZai === undefined) {
+        delete process.env.ZAI_API_KEY;
+      } else {
+        process.env.ZAI_API_KEY = previousZai;
+      }
+      if (previousLegacy === undefined) {
+        delete process.env.Z_AI_API_KEY;
+      } else {
+        process.env.Z_AI_API_KEY = previousLegacy;
+      }
+    }
+  });
 });

src/agents/model-auth.ts

@@ -123,6 +123,10 @@ export function resolveEnvApiKey(provider: string): EnvApiKeyResult | null {
     return pick("ANTHROPIC_OAUTH_TOKEN") ?? pick("ANTHROPIC_API_KEY");
   }
 
+  if (provider === "zai") {
+    return pick("ZAI_API_KEY") ?? pick("Z_AI_API_KEY");
+  }
+
   if (provider === "google-vertex") {
     const envKey = getEnvApiKey(provider);
     if (!envKey) return null;
@@ -137,7 +141,6 @@ export function resolveEnvApiKey(provider: string): EnvApiKeyResult | null {
     xai: "XAI_API_KEY",
     openrouter: "OPENROUTER_API_KEY",
     minimax: "MINIMAX_API_KEY",
-    zai: "ZAI_API_KEY",
     mistral: "MISTRAL_API_KEY",
     "opencode-zen": "OPENCODE_ZEN_API_KEY",
   };