make fn clearable

src/state.rs

@@ -16,6 +16,17 @@ impl AppState {
         }
     }
 
+    pub async fn reset(&self) {
+        // Clear all chunks
+        self.chunks.write().await.clear();
+
+        // Reset completion status
+        *self.complete.write().await = false;
+
+        // Notify any waiting tasks about the reset
+        self.notify.notify_waiters();
+    }
+
     pub async fn add_chunk(&self, chunk: Bytes) {
         self.chunks.write().await.push(chunk);
         self.notify.notify_waiters();