fix(codex-quota): guard feature label type in quota windows (#1346)

src/cliproxy/quota/__tests__/quota-fetcher-codex.test.ts

@@ -342,6 +342,26 @@ describe('Codex Quota Fetcher', () => {
       expect(windows.find((w) => w.category === 'additional')).toBeUndefined();
     });
 
+    it('should coerce non-string additional limit_name values to fallback label', () => {
+      const response = {
+        additional_rate_limits: [
+          {
+            limit_name: { unexpected: true },
+            rate_limit: {
+              primary_window: { used_percent: 10, reset_after_seconds: 3600 },
+            },
+          },
+        ],
+      };
+
+      const windows = buildCodexQuotaWindows(response as never);
+
+      expect(windows).toHaveLength(1);
+      expect(windows[0].category).toBe('additional');
+      expect(windows[0].featureLabel).toBe('Additional');
+      expect(windows[0].label).toBe('Additional (Primary)');
+    });
+
     it('should accept camelCase additionalRateLimits and rateLimit fields', () => {
       const response = {
         additionalRateLimits: [

src/cliproxy/quota/quota-fetcher-codex.ts

@@ -380,7 +380,11 @@ function buildCodexQuotaWindows(payload: CodexUsageResponse): CodexQuotaWindow[]
       const entryRateLimit = entry.rate_limit || entry.rateLimit;
       if (!entryRateLimit) continue;
 
-      const featureLabel = entry.limit_name || entry.limitName || 'Additional';
+      const rawFeatureLabel = entry.limit_name ?? entry.limitName;
+      const featureLabel =
+        typeof rawFeatureLabel === 'string' && rawFeatureLabel.trim().length > 0
+          ? rawFeatureLabel.trim()
+          : 'Additional';
       addWindow(
         `${featureLabel} (Primary)`,
         entryRateLimit.primary_window || entryRateLimit.primaryWindow,