feat: add Oh My Pi provider support

[kalugny]

I'd like to contribute Oh My Pi provider support but PR creation is restricted to collaborators.

My changes are on my fork branch:
https://github.com/kalugny/agent-os/tree/feature/oh-my-pi-support

Changes

• Add Oh My Pi to the provider registry
• Update README with Oh My Pi provider entry
• Update types and project settings dialog for new provider

Commit: aaaed80 (1 commit, 69 additions / 11 deletions, 7 files)

Pre-commit checks (formatting + tsc --noEmit) pass.

Please add me as a collaborator or pull the changes directly. Thanks!

[saadnvd1]

thanks so much, this has been added