feat(prompt): show project (folder) name in the interactive prompt

[adi07das]

The problem

When you're running multiple Code Puppy sessions across different terminal tabs/windows (one puppy working on repo A, another on repo B, maybe a third on some quick scratch dir), it's really hard to tell at a glance which puppy is working on which project.

Today, the only way to figure it out is to scroll up through the session history looking for the last 'cd' command or an early message that mentions the project. On busy sessions that can be a lot of scrolling.

The fix

The interactive prompt now displays the name of the folder the puppy is currently pointing to, right between the model badge and the full cwd path.

Before:
Booster [Code Puppy] [claude-sonnet-4-5] (~/workspace/repo-a) >>>

After:
Booster [Code Puppy] [claude-sonnet-4-5] repo-a (~/workspace/repo-a) >>>

Flip to another tab and you immediately see 'repo-b' instead of 'repo-a' without touching the scrollback. The label follows 'cd' — inside /workspace/repo-a/tests it shows 'tests', in /tmp it shows 'tmp', at $HOME it shows ''.

Implementation

• New '_get_project_name(cwd)' helper: basename of the current working directory, with a '~' shortcut for $HOME.
• New 'project' entry in PROMPT_STYLES so themes and the persistent bottom-bar prompt can style it consistently.
• The fragment carries 'class:tui.warning' so it visually pops against the model's 'class:tui.title', and a local Style rule ('bold ansired') keeps it colored even without a theme plugin.
• Zero new runtime dependencies. No subprocess or filesystem walking on every prompt render — just 'os.path.basename(os.path.normpath(cwd))'.

Tests

• '_get_project_name': cwd basename, nested subdirectory, and $HOME
• 'get_prompt_with_active_model': renders project name + carries the new 'class:project class:tui.warning' style token
• Existing prompt/statusline tests still green (236 tests pass locally)

Co-Author: Aditya Das aditya.das@walmart.com

[mpfaffenberger]

This is not redundant with showing the folder?

[adi07das]

Thanks for the review @mpfaffenberger . Looks like it was done as part of the latest update. However, have repurposed to display the base root folder to provide the user a good reference point.

Two coordinated additions:

1. Startup banner (right after the CODE PUPPY logo, on both
   code-puppy and code-puppy -i): (Mainly in cases where users trigger the Puppy from Terminal)

Working in project: my-repo (~/workspace/my-repo)

So the very first thing you see when opening a new terminal is which
project this puppy is pointing to.

2. Interactive prompt now carries the same project label between
   the model badge and the cwd:

Before:
Booster [Code Puppy] [claude-sonnet-4-5] (~/workspace/my-repo) >>>

After:
Booster [Code Puppy] [claude-sonnet-4-5] my-repo (~/workspace/my-repo) >>>

How the project name is resolved
────────────────────────────────

Preference order (in _get_project_name):

1. Basename of the nearest git worktree root. This is the key win:
   cd packages/api/src inside my-repo still displays my-repo, not
   src. Multi-tab users can eyeball each label and immediately know
   which project it belongs to.
2. Basename of the cwd itself when not inside a git repo.
3. ~ when sitting directly in $HOME.