Update Linux setup scripts to allow Enter key as default confirmation (Y)

[Copilot]

The Linux setup scripts (setup.sh and setup-beta.sh) previously required users to explicitly type y to confirm installation steps. This PR updates both scripts to use Y as the default value, allowing users to simply press Enter to confirm, which improves usability and aligns with common CLI conventions.

Changes Made

Before:

read -p "Continue (y/n)? " -n1 -r response
if [[ "$response" != [yY] ]]; then
    echo -e "\nExiting"
    exit 1
fi

After:

read -p "Continue (Y/n)? " -r response  
if [[ "$response" = [nN] ]]; then
    echo -e "\nExiting"
    exit 1
fi

Key Improvements:

1. Prompt Updated: Changed from (y/n)? to (Y/n)? to clearly indicate Y is the default
2. Enter Key Support: Removed -n1 flag to allow Enter key input (reads full line instead of single character)
3. Default Logic: Changed from rejecting non-Y responses to only rejecting explicit N responses
4. Better UX: Empty input (Enter key) now defaults to 'Yes', following standard CLI patterns

Behavior:

• ✅ Enter key → Continue (default to Yes)
• ✅ 'y' or 'Y' → Continue
• ✅ 'n' or 'N' → Exit
• ✅ Other input → Continue (graceful default to Yes)
• ✅ Non-interactive mode → Continue (unchanged behavior)

This change makes the setup process more user-friendly while maintaining backward compatibility and follows the same pattern used in other scripts like trust-cert.sh.

Fixes #1288.

Warning

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[waldekmastykarz]

Update the logic so that the script continues only on y, Y or Enter but not on anything else.

[Copilot]

Update the logic so that the script continues only on y, Y or Enter but not on anything else.

Updated the logic to only continue on y, Y, or Enter. Any other input (including n, N, or text like "yes", "no") will now exit the script. Fixed in commit 3545a38.

[waldekmastykarz]

Perfect. Now also update the PowerShell version of the Linux setup script in setup.ps1 and setup-beta.ps1

[Copilot]

Perfect. Now also update the PowerShell version of the Linux setup script in setup.ps1 and setup-beta.ps1

Updated the PowerShell setup scripts (setup.ps1 and setup-beta.ps1) with the same logic - they now accept Enter key as default 'Y', and only exit on explicit 'n' or 'N' responses. Fixed in commit 697d821.

[waldekmastykarz]

Update all scripts so that:

• pressing Y, y or Enter continues installation
• pressing anything else cancels it
• there's no need to confirm the key with an enter (eg. Y + Enter), just press one key

[Copilot]

Update all scripts so that:

• pressing Y, y or Enter continues installation...

Updated all setup scripts to require single key press only:

• Bash scripts (setup.sh, setup-beta.sh): Now use -n1 flag to read single character and only accept Y, y, or Enter
• PowerShell scripts (setup.ps1, setup-beta.ps1): Now use [Console]::ReadKey($true) for single key input and only accept Y, y, or Enter
• Any other key (including n, N, or text) will cancel installation
• No need to press Enter after Y/y - just single key press

Fixed in commit 4842174.