style: clear the lint and prettier findings so the gates pass

- prettier formatting across routes, components and tests (no behavior change)
- unused imports and ternary-as-statement replaced with explicit branches
- eslint: scripts/**/*.js are CommonJS, allow require() there; prettier ignores pnpm-lock.yaml

src/components/usage/MonitorTab.tsx

@@ -58,9 +58,8 @@ export const MonitorTab: React.FC = () => {
         tokensPrompt: log.metadata?.tokensPrompt as number | undefined,
         tokensCompletion: log.metadata?.tokensCompletion as number | undefined,
         tokensTotal:
-          (((log.metadata?.tokensPrompt as number) || 0) +
-            ((log.metadata?.tokensCompletion as number) || 0)) ||
-          undefined,
+          ((log.metadata?.tokensPrompt as number) || 0) +
+            ((log.metadata?.tokensCompletion as number) || 0) || undefined,
       }))
     : [];
   const stats = statsData?.success ? statsData.data : undefined;