2024-01-15 10:30:45.123 MyApp[12345:67890] Save button tapped
2024-01-15 10:30:45.456 MyApp[12345:67890] Saving data: User(name: "John")
2024-01-15 10:30:45.789 MyApp[12345:67890] Save completed successfully

Add print statements to the saveData function to show:
- When the function starts
- What data is being saved
- Whether the save succeeded or failed

Add logging for all button taps so I can see what users are doing

Add logging to show:
- When API requests start
- What data is being sent
- What response comes back
- Any errors that occur

Add a print statement at the start of the button's action
to confirm it's being triggered

Add logging to show:
- When data is loaded
- How many items were loaded
- The actual content of the first item

Add logging when the navigation to [screen] is triggered
and when [screen] appears

Add extensive logging throughout [feature] to trace exactly
where the problem occurs

Fatal error: Unexpectedly found nil while unwrapping an Optional value

Fatal error: Index out of range

Could not cast value of type 'X' to 'Y'

print("▶️ saveProfile started")
// ... code ...
print("✅ saveProfile completed")

print("📊 User data: \(userData)")
print("📊 Items count: \(items.count)")

if isLoggedIn {
    print("🔓 User is logged in, showing profile")
} else {
    print("🔒 User not logged in, showing login")
}

Remove all the debug print statements we added for troubleshooting.
Keep only important error logging.

Replace debug print statements with proper logging that only
shows in debug builds, not in production.