fix: suppress unused variable TS errors that block release build

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/TokenUsagePage.tsx

@@ -88,7 +88,7 @@ interface TokenUsagePageProps {
 	projectPath: string;
 }
 
-export function TokenUsagePage({ projectPath }: TokenUsagePageProps) {
+export function TokenUsagePage({ projectPath: _projectPath }: TokenUsagePageProps) {
 	const [records, setRecords] = React.useState<TokenUsageRecord[]>([]);
 	const [loading, setLoading] = React.useState(true);
 	const [error, setError] = React.useState<string | null>(null);