[Bug]: interactive setup does not accept carriage return

### What happened?

After downloading the latest binary for the first time via `curl` and then running `fabric --setup`, carriage return is not accepted via STDIN (in order to accept the listed default repository url per the interactive prompt). This is the case both without a space and including a space.

This was the same for the `brew` install (tested after removing the curl binary), and it presented the same issue. I also trying to put a value in (see screenshots) which also failed to accept carriage return.

### Steps to reproduce:
- `curl -fsSL https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.sh | bash`
- `fabric --setup`
- press enter to accept default repo listed
- carriage return not accepted from STDIN

### Setup
- Terminal: kitty 0.41.0

### Operating System

macOS - Silicon (arm64)

### OS Version

```shell
macOS: Sequoia 15.1
```

### How did you install Fabric?

Release Binary - macOS (arm64)

### Version

```text
1.4.455
```

### Relevant log output

```shell
❯ fabric --setup

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🎉 Welcome to Fabric! Let's get you set up.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

📥 Step 1: Downloading patterns (required for Fabric to work)...

[Patterns Loader]

Enter the default Git repository URL for the patterns (leave empty for 'https://github.com/danielmiessler/fabric.git' or type 'reset' to remove the value):^M^M^M^C
❯ fabric --setup

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🎉 Welcome to Fabric! Let's get you set up.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

📥 Step 1: Downloading patterns (required for Fabric to work)...

[Patterns Loader]

Enter the default Git repository URL for the patterns (leave empty for 'https://github.com/danielmiessler/fabric.git' or type 'reset' to remove the value): ^M ^M^M^M^C
```

### Relevant screenshots (optional)

Start by running the reported release-binary setup flow with `fabric --setup` on macOS, using the Step 1 patterns prompt and reproducing the carriage-return input shown in the log. Trace the interactive setup and patterns-loader entry points, then verify that pressing Return accepts the default repository URL or a supplied value without interruption.

Written by the indexing model from the issue text.