Add profile photo upload:
- Let user pick from camera or photo library
- Upload to Supabase Storage 'avatars' bucket
- Save the URL to the user's profile

// Upload image
let imageData = image.jpegData(compressionQuality: 0.8)!
let path = "\(userId)/avatar.jpg"

try await supabase.storage
  .from("avatars")
  .upload(path: path, data: imageData, options: .init(
    contentType: "image/jpeg"
  ))

avatars/
├── user-123/
│   └── avatar.jpg
├── user-456/
│   └── avatar.jpg

uploads/
├── images/
│   └── photo-1.jpg
├── documents/
│   └── report.pdf

// Get public URL (no auth needed to access)
let url = supabase.storage
  .from("avatars")
  .getPublicURL(path: "user-123/avatar.jpg")

// Get signed URL (temporary, authenticated)
let url = try await supabase.storage
  .from("private-docs")
  .createSignedURL(path: "user-123/document.pdf", expiresIn: 3600)

// Download file data
let data = try await supabase.storage
  .from("avatars")
  .download(path: "user-123/avatar.jpg")

// Convert to image
let image = UIImage(data: data)

// Delete single file
try await supabase.storage
  .from("avatars")
  .remove(paths: ["user-123/avatar.jpg"])

// Delete multiple files
try await supabase.storage
  .from("uploads")
  .remove(paths: ["file1.jpg", "file2.jpg"])

CREATE POLICY "Users upload own avatars"
ON storage.objects FOR INSERT
WITH CHECK (
  bucket_id = 'avatars' AND
  auth.uid()::text = (storage.foldername(name))[1]
);

CREATE POLICY "Public avatar access"
ON storage.objects FOR SELECT
USING (bucket_id = 'avatars');

Add a profile photo feature:
- Tap avatar to change
- Option for camera or library
- Crop to square
- Upload to 'avatars' bucket
- Update profile with new URL
- Show loading indicator

Add document upload:
- User can attach files to tasks
- Support PDF, images
- Store in 'attachments' bucket
- Show download button
- Handle errors

Create a photo gallery:
- User uploads photos
- Store in 'gallery' bucket
- Display in grid
- Tap to view full screen
- Swipe to delete

Before uploading images, compress them to reduce size:
- Use JPEG compression 80%
- Resize large images to max 1024px