fix(usage): restore provider auth fallback

src/agents/pi-bundle-mcp-runtime.test.ts

@@ -68,7 +68,7 @@ describe("session MCP runtime", () => {
       { toolName: "alpha?", description: "question" },
       { toolName: "alpha!", description: "bang" },
     ];
-    const catalogB = [...catalogA].reverse();
+    const catalogB = catalogA.toReversed();
 
     const materializedA = await materializeBundleMcpToolsForRun({
       runtime: makeRuntime(catalogA),

src/infra/provider-usage.auth.normalizes-keys.test.ts

@@ -200,6 +200,7 @@ describe("resolveProviderAuths key normalization", () => {
     Z_AI_API_KEY: undefined,
     MINIMAX_API_KEY: undefined,
     MINIMAX_CODE_PLAN_KEY: undefined,
+    MINIMAX_CODING_API_KEY: undefined,
     XIAOMI_API_KEY: undefined,
   } satisfies Record<string, string | undefined>;
 
@@ -416,6 +417,16 @@ describe("resolveProviderAuths key normalization", () => {
     });
   });
 
+  it("accepts MINIMAX_CODING_API_KEY as a coding-plan alias", async () => {
+    await expectResolvedAuthsFromSuiteHome({
+      providers: ["minimax"],
+      env: {
+        MINIMAX_CODING_API_KEY: "coding-api-key",
+      },
+      expected: [{ provider: "minimax", token: "coding-api-key" }],
+    });
+  });
+
   it("strips embedded CR/LF from stored auth profiles (token + api_key)", async () => {
     await expectResolvedAuthsFromSuiteHome({
       providers: ["minimax", "xiaomi"],

src/infra/provider-usage.auth.ts

@@ -170,7 +170,25 @@ async function resolveProviderUsageAuthFallback(params: {
   state: UsageAuthState;
   provider: UsageProviderId;
 }): Promise<ProviderAuth | null> {
-  void params;
+  const oauthToken = await resolveOAuthToken({
+    state: params.state,
+    provider: params.provider,
+  });
+  if (oauthToken) {
+    return oauthToken;
+  }
+
+  const apiKey = resolveProviderApiKeyFromConfigAndStore({
+    state: params.state,
+    providerIds: [params.provider],
+  });
+  if (apiKey) {
+    return {
+      provider: params.provider,
+      token: apiKey,
+    };
+  }
+
   return null;
 }