fix(claude): correct utilization inversion and propagate remainingPercentage

- Fix createQuotaObject: utilization is percentage USED, not remaining
- Add optional chaining to window access in createQuotaObject
- Use typeof object guards for five_hour/seven_day instead of !== undefined
- Use nullish coalescing for extra_usage
- Propagate remainingPercentage in parseQuotaData claude case

Author: DavyMassoneto

open-sse/services/usage.ts

@@ -443,23 +443,25 @@ async function getClaudeUsage(accessToken) {
       const data = await oauthResponse.json();
       const quotas: Record<string, any> = {};
 
-      // utilization = percentage remaining, not used
+      // utilization = percentage USED (e.g., 22 means 22% used, 78% remaining)
       const createQuotaObject = (window: any) => {
-        const remaining = window.utilization ?? 0;
+        const used = window?.utilization ?? 0;
+        const remaining = 100 - used;
         return {
-          used: 100 - remaining,
+          used,
           total: 100,
-          resetAt: parseResetTime(window.resets_at) || null,
+          remaining,
+          resetAt: parseResetTime(window?.resets_at),
           remainingPercentage: remaining,
           unlimited: false,
         };
       };
 
-      if (data.five_hour !== undefined) {
+      if (data.five_hour && typeof data.five_hour === "object") {
         quotas["session (5h)"] = createQuotaObject(data.five_hour);
       }
 
-      if (data.seven_day !== undefined) {
+      if (data.seven_day && typeof data.seven_day === "object") {
         quotas["weekly (7d)"] = createQuotaObject(data.seven_day);
       }
 
@@ -479,7 +481,7 @@ async function getClaudeUsage(accessToken) {
       return {
         plan: "Claude Code",
         quotas,
-        extraUsage: data.extra_usage || null,
+        extraUsage: data.extra_usage ?? null,
       };
     }
 

src/app/(dashboard)/dashboard/usage/components/ProviderLimits/utils.tsx

@@ -159,6 +159,7 @@ export function parseQuotaData(provider, data) {
               used: quota.used || 0,
               total: quota.total || 0,
               resetAt: quota.resetAt || null,
+              remainingPercentage: quota.remainingPercentage,
             });
           });
         }