feat: implement client-side image resizing for avatar uploads

- Add resizeImage function to SettingsPage
- Resize images larger than 2MB to max 800x800 pixels
- Convert to JPEG with 80% quality to reduce file size
- Add server-side validation for 10MB file size limit
- Maintain aspect ratio during resizing
- Log resizing details for debugging

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

api/src/rehearsalhub/routers/auth.py

@@ -83,7 +83,7 @@ async def upload_avatar(
     print(f"Avatar upload called for member {current_member.id}")
     print(f"File: {file.filename}, Content-Type: {file.content_type}")
     
-    # Validate file type and size
+    # Validate file type
     if not file.content_type.startswith("image/"):
         print("Invalid file type")
         raise HTTPException(
@@ -91,6 +91,15 @@ async def upload_avatar(
             detail="Only image files are allowed"
         )
     
+    # Validate file size (10MB limit)
+    max_size = 10 * 1024 * 1024  # 10MB
+    if file.size > max_size:
+        print(f"File too large: {file.size} bytes (max {max_size})")
+        raise HTTPException(
+            status_code=status.HTTP_413_REQUEST_ENTITY_TOO_LARGE,
+            detail=f"File too large. Maximum size is {max_size / 1024 / 1024}MB"
+        )
+    
     # Create uploads directory if it doesn't exist
     upload_dir = "uploads/avatars"
     os.makedirs(upload_dir, exist_ok=True)

web/src/pages/SettingsPage.tsx

@@ -44,6 +44,74 @@ function SettingsForm({ me, onBack }: { me: MemberRead; onBack: () => void }) {
   const [saved, setSaved] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
+  // Image resizing function
+  const resizeImage = (file: File, maxWidth: number, maxHeight: number): Promise<File> => {
+    return new Promise((resolve, reject) => {
+      const img = new Image();
+      const reader = new FileReader();
+      
+      reader.onload = (event) => {
+        if (typeof event.target?.result !== 'string') {
+          reject(new Error('Failed to read file'));
+          return;
+        }
+        
+        img.onload = () => {
+          const canvas = document.createElement('canvas');
+          let width = img.width;
+          let height = img.height;
+          
+          // Calculate new dimensions
+          if (width > height) {
+            if (width > maxWidth) {
+              height *= maxWidth / width;
+              width = maxWidth;
+            }
+          } else {
+            if (height > maxHeight) {
+              width *= maxHeight / height;
+              height = maxHeight;
+            }
+          }
+          
+          canvas.width = width;
+          canvas.height = height;
+          
+          const ctx = canvas.getContext('2d');
+          if (!ctx) {
+            reject(new Error('Failed to get canvas context'));
+            return;
+          }
+          
+          ctx.drawImage(img, 0, 0, width, height);
+          
+          canvas.toBlob((blob) => {
+            if (!blob) {
+              reject(new Error('Failed to create blob'));
+              return;
+            }
+            
+            const resizedFile = new File([blob], file.name, {
+              type: 'image/jpeg',
+              lastModified: Date.now()
+            });
+            
+            console.log(`Resized image from ${img.width}x${img.height} to ${width}x${height}`);
+            console.log(`File size reduced from ${file.size} to ${resizedFile.size} bytes`);
+            
+            resolve(resizedFile);
+          }, 'image/jpeg', 0.8); // JPEG quality 80%
+        };
+        
+        img.onerror = reject;
+        img.src = event.target?.result;
+      };
+      
+      reader.onerror = reject;
+      reader.readAsDataURL(file);
+    });
+  };
+
   const saveMutation = useMutation({
     mutationFn: () =>
       updateSettings({
@@ -127,9 +195,19 @@ function SettingsForm({ me, onBack }: { me: MemberRead; onBack: () => void }) {
               if (file) {
                 console.log("Selected file:", file.name, file.type, file.size);
                 setUploading(true);
+                
                 try {
+                  // Check file size and resize if needed
+                  const maxSize = 2 * 1024 * 1024; // 2MB
+                  let processedFile = file;
+                  
+                  if (file.size > maxSize) {
+                    console.log("File too large, resizing...");
+                    processedFile = await resizeImage(file, 800, 800); // Max 800x800
+                  }
+                  
                   const formData = new FormData();
-                  formData.append('file', file);
+                  formData.append('file', processedFile, processedFile.name || file.name);
                   
                   console.log("Uploading file to /auth/me/avatar");
                   const response = await api.post<MemberRead>('/auth/me/avatar', formData);