backend opti

backend/src/handlers/upload.rs

@@ -89,6 +89,11 @@ pub async fn delete_upload(
             error!("Delete error for file {}: {}", filename, e);
             AppError::Internal("Delete error".to_string(), Some(e.to_string()))
         })?;
+        state
+            .image_dims_cache
+            .write()
+            .await
+            .remove(&format!("/uploads/{}", filename));
         info!("Deleted file: {}", filename);
         Ok(StatusCode::NO_CONTENT)
     } else {
@@ -227,10 +232,12 @@ pub async fn upload_file(
             AppError::Internal("Write error".to_string(), Some(e.to_string()))
         })?;
 
+        let url = format!("/uploads/{}", final_name_str);
+        // Invalidate any stale dim cache entry (matters when replacing an existing file).
+        state.image_dims_cache.write().await.remove(&url);
+
         info!("File uploaded successfully to {:?}", final_path);
-        return Ok(Json(UploadResponse {
-            url: format!("/uploads/{}", final_name_str),
-        }));
+        return Ok(Json(UploadResponse { url }));
     }
 
     warn!("Upload failed: no file found in multipart stream");