fix: handle buffer capacity check correctly

src/meta_plugin/binary.rs

@@ -60,16 +60,14 @@ impl MetaPlugin for BinaryMetaPlugin {
         
         // Calculate how much data we can still accept
         let remaining_capacity = self.max_buffer_size.saturating_sub(self.buffer.len());
-        if remaining_capacity == 0 {
+        if remaining_capacity > 0 {
-            return;
+            // Determine how much data to copy
+            let bytes_to_take = std::cmp::min(data.len(), remaining_capacity);
+        
+            // Add data to our buffer
+            self.buffer.extend_from_slice(&data[..bytes_to_take]);
         }
         
-        // Determine how much data to copy
-        let bytes_to_take = std::cmp::min(data.len(), remaining_capacity);
-        
-        // Add data to our buffer
-        self.buffer.extend_from_slice(&data[..bytes_to_take]);
-        
         // If we've reached our buffer limit, save the metadata immediately
         if self.buffer.len() >= self.max_buffer_size {
             let _ = self.save_metadata(conn);