fix: resolve private field access and type issues

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/services/async_item_service.rs

@@ -177,10 +177,10 @@ impl AsyncItemService {
                 let item_with_meta = item_service.get_item(&conn, item_id)?;
                 let item_id_val = item_with_meta.item.id.ok_or_else(|| CoreError::InvalidInput("Item missing ID".to_string()))?;
                 
-                let mut item_path = item_service.data_path.clone();
+                let mut item_path = item_service.get_data_path().clone();
                 item_path.push(item_id_val.to_string());
                 
-                let reader = item_service.compression_service.stream_item_content(
+                let reader = item_service.get_compression_service().stream_item_content(
                     item_path, 
                     &item_with_meta.item.compression
                 )?;

src/services/compression_service.rs

@@ -37,7 +37,7 @@ impl CompressionService {
 
         let reader = engine.open(item_path.clone())
             .map_err(|e| CoreError::Other(anyhow!("Failed to open item file {:?}: {}", item_path, e)))?;
-        Ok(reader)
+        Ok(Box::new(reader))
     }
 }
 

src/services/item_service.rs

@@ -100,7 +100,7 @@ impl ItemService {
         let mut item_path = self.data_path.clone();
         item_path.push(item_id.to_string());
         
-        let reader = self.compression_service.stream_item_content(item_path, &item_with_meta.item.compression)?;
+        let reader = self.compression_service.stream_item_content(item_path.clone(), &item_with_meta.item.compression)?;
         
         let metadata = item_with_meta.meta_as_map();
         let mime_type = metadata
@@ -114,7 +114,7 @@ impl ItemService {
         } else {
             // Read only the first 8192 bytes for binary detection
             let mut sample_reader = self.compression_service.stream_item_content(
-                item_path.clone(), 
+                item_path, 
                 &item_with_meta.item.compression
             )?;
             let mut sample_buffer = vec![0; 8192];
@@ -376,4 +376,12 @@ impl ItemService {
 
         self.get_item(conn, item_id)
     }
+
+    pub fn get_compression_service(&self) -> &CompressionService {
+        &self.compression_service
+    }
+
+    pub fn get_data_path(&self) -> &PathBuf {
+        &self.data_path
+    }
 }