Add a custom "/scotty" command to OpenCode CLI that prints out an ASCII art of Scotty

[zrusekko-cmu]

Issue for this PR

Closes #2

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

This PR adds a custom /scotty command to the OpenCode CLI. Running the command opens a dialog displaying an ASCII art of Scotty. The command is registered in the TUI command list and uses a new dialog-scotty component to display the artwork. The changes are limited to the files needed for the new command and do not modify any unrelated functionality.

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AI Usage

I used AI assistance during the implementation of this feature.

How did you verify your code works?

I ran the OpenCode CLI locally and tested the /scotty command to verify that the command is available and that the Scotty dialog opens and displays correctly. I also ran bun test in the TUI package as well as bun lint for the specific files changed (i.e., packages/tui/src/component/dialog-scotty.tsx and packages/tui/src/app.tsx), both passing successfully.

Output of running bun test in the TUI package:

Output of running bun lint for the specific files changed:

Screenshots / recordings

If this is a UI change, please include a screenshot or recording.

/scotty command now available in OpenCode:

Scotty ASCII art displayed after running /scotty command in OpenCode:

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

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