Changes

frontend/src/lib/api.ts

@@ -10,6 +10,17 @@ export function logNonAbortError(label: string, error: unknown): void {
   console.error(`${label}:`, error);
 }
 
+export function isAbortError(error: unknown): boolean {
+  return error instanceof Error && error.name === 'AbortError';
+}
+
+/** Throw if response is not 2xx. Call before `.json()`. */
+export function assertOk(res: Response, label: string): void {
+  if (!res.ok) {
+    throw new Error(`${label}: HTTP ${res.status} ${res.statusText}`);
+  }
+}
+
 export function authHeaders(init?: RequestInit): RequestInit {
   const headers: Record<string, string> = {};
   if (pb.authStore.isValid && pb.authStore.token) {
@@ -69,7 +80,8 @@ export function buildFilterString(filters: FeatureFilters, features: FeatureMeta
         return `${name}:${(value as string[]).join('|')}`;
       }
       const [min, max] = value as [number, number];
-      return `${name}:${min}:${max}`;
+      const maxStr = meta?.absolute && max === meta.max ? 'inf' : String(max);
+      return `${name}:${min}:${maxStr}`;
     })
     .join(',');
 }