Add try repo to publish experiments to GitHub

[elalemanyo]

Experiments deserve a home. Sometimes, later, they deserve a git repo too 🙂

This adds try repo, a small workflow for publishing a plain try directory to a fresh GitHub repository using the GitHub CLI. It keeps the lightweight “organized chaos” flow intact: start with a dated experiment folder, and if it grows up, give it a remote without manually doing the git init / first commit / gh repo create dance.

What changed

• Add try repo [path-or-name] [repo-name] [--private|--public]
• Add try exec repo ... for shell-wrapper/manual script usage
• Add Ctrl-U in the TUI to publish the selected try
• Default repo name strips the leading YYYY-MM-DD- prefix
• Default visibility is private, with --public and TUI toggle support
• Refuse directories that already contain .git to avoid touching existing history
• Remove the temporary local .git after a successful gh repo create --push
• Leave .git in place if any git/gh step fails, so the user can inspect and retry

Example

try repo 2025-08-17-my-app
# creates a private GitHub repo named my-app

try repo 2025-08-17-my-app better-name --public
# creates a public GitHub repo named better-name

Why

try is great at giving messy experiments a real place to live. This adds the next step for experiments that become worth sharing, backing up, or continuing somewhere else.

It does not replace graduate/local project workflows. It only publishes a plain try folder to GitHub.

Tests

• Added repo command coverage in spec/tests/test_38_repo.sh
• Covered CLI script generation, default private repos, public repos, custom names, relative path resolution, existing .git refusal, TUI publishing, TUI visibility toggle, and cancellation.