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,

ui/src/lib/utils.ts

@@ -384,8 +384,8 @@ function getCodexWindowKindFromLabel(label: string): CodexWindowKind {
  *   "OmniReview"          -> "OmniReview"
  *   ""                    -> ""
  */
-export function prettifyCodexFeatureLabel(featureLabel: string): string {
-  const trimmed = (featureLabel || '').trim();
+export function prettifyCodexFeatureLabel(featureLabel: unknown): string {
+  const trimmed = typeof featureLabel === 'string' ? featureLabel.trim() : '';
   if (!trimmed) return '';
   const stripped = trimmed.replace(/^GPT-[\d.]+-Codex-/i, '');
   if (stripped !== trimmed && stripped.length > 0) {

ui/tests/unit/ui/lib/codex-quota-breakdown.test.ts

@@ -37,6 +37,11 @@ describe('prettifyCodexFeatureLabel', () => {
     expect(prettifyCodexFeatureLabel('   ')).toBe('');
     expect(prettifyCodexFeatureLabel('  GPT-5.3-Codex-Spark  ')).toBe('Codex Spark');
   });
+
+  it('returns empty string for non-string input', () => {
+    expect(prettifyCodexFeatureLabel({ label: 'Spark' })).toBe('');
+    expect(prettifyCodexFeatureLabel(123)).toBe('');
+  });
 });
 
 describe('getCodexWindowKind', () => {