#265 desktop (fix): init git if project has no git

Description

Related Issues

Type of Change

• [ x] Bug fix
• [ x] New feature
• Documentation
• [ x] Refactor
• Other (please describe):

Testing

Screenshots (if applicable)

Additional Notes

Summary by CodeRabbit

• New Features

  • Initialize Git repositories from the app via a new dialog when opening non-repo folders.
  • New "init and open" flow: initialize a repo, determine its default branch, then open/create the project and workspace.

• Bug Fixes / Improvements

  • Clearer feedback when a folder needs Git initialization or when opening fails.
  • Project records now update default branch and last-opened timestamps automatically.
  • Worktree creation is remote-aware and falls back gracefully when no origin is present.

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