handle 0 values correctly

Author: ChrisB-TL

src/Providers/Anthropic/Handlers/AnthropicHandlerAbstract.php

@@ -119,13 +119,13 @@ protected function processRateLimits(): array
 
             return new ProviderRateLimit(
                 name: $limit_name,
-                limit: data_get($fields, 'limit')
+                limit: data_get($fields, 'limit') !== null
                     ? (int) data_get($fields, 'limit')
                     : null,
-                remaining: data_get($fields, 'remaining')
+                remaining: data_get($fields, 'remaining') !== null
                     ? (int) data_get($fields, 'remaining')
                     : null,
-                resetsAt: data_get($fields, 'reset') ? new Carbon($resets_at) : null
+                resetsAt: data_get($fields, 'reset') !== null ? new Carbon($resets_at) : null
             );
         }));
     }

tests/Providers/Anthropic/AnthropicRateLimitExceptionTest.php

@@ -57,5 +57,9 @@
         expect($e->rateLimits[0]->limit)->toEqual(1000);
         expect($e->rateLimits[0]->remaining)->toEqual(500);
         expect($e->rateLimits[0]->resetsAt)->toEqual($requests_reset);
+
+        expect($e->rateLimits[1]->name)->toEqual('input-tokens');
+        expect($e->rateLimits[1]->limit)->toEqual(80000);
+        expect($e->rateLimits[1]->remaining)->toEqual(0);
     }
 });