pr message fixes

apps/backend/src/app/api/latest/ai/query/[mode]/route.ts

@@ -86,7 +86,7 @@ export const POST = createSmartRouteHandler({
       mcpCorrelationId: body.mcpCallMetadata ? correlationId : undefined,
       conversationId: conversationIdForLog,
     };
-    const startedAt = Date.now();
+    const startedAt = performance.now();
 
     const isAnthropic = model.modelId.startsWith("anthropic/");
     const systemMessage: ModelMessage = {

apps/backend/src/lib/ai/ai-query-handlers.ts

@@ -119,7 +119,7 @@ function logSuccess(args: {
     cachedInputTokens: extractCachedTokens(providerMetadata),
     costUsd: extractOpenRouterCost(providerMetadata),
     stepCount: steps.length,
-    durationMs: BigInt(Date.now() - startedAt),
+    durationMs: BigInt(Math.round(performance.now() - startedAt)),
     errorMessage: undefined,
   }));
 }
@@ -140,7 +140,7 @@ function logFailure(args: {
     cachedInputTokens: undefined,
     costUsd: undefined,
     stepCount: 0,
-    durationMs: BigInt(Date.now() - startedAt),
+    durationMs: BigInt(Math.round(performance.now() - startedAt)),
     errorMessage: err instanceof Error ? err.message : String(err),
   }));
 }
@@ -183,7 +183,7 @@ function logMcpCallAndReview(args: {
     response: finalText,
     stepCount,
     innerToolCallsJson,
-    durationMs: BigInt(Date.now() - startedAt),
+    durationMs: BigInt(Math.round(performance.now() - startedAt)),
     modelId,
     errorMessage: undefined,
   });

apps/internal-tool/src/components/Usage.tsx

@@ -45,7 +45,11 @@ export function Usage({ rows, connectionState, onSelect, selectedId }: Props) {
   const [page, setPage] = useState(0);
   const [pageSize, setPageSize] = useState<PageSize>(50);
 
-  const now = Date.now();
+  const [now, setNow] = useState(() => Date.now());
+  useEffect(() => {
+    const id = setInterval(() => setNow(Date.now()), 60_000);
+    return () => clearInterval(id);
+  }, []);
   const rangeStart = useMemo(() => {
     switch (timeRange) {
       case "24h": {