feat(CLI Tool): Clean up output of Canvas Create
- Rename CLI prompts, docs, and internal context from app to project.
- Improve setup and error output for template, install, Git init, and agent compatibility flows.
- Add a note when agent setup is skipped in non-interactive mode.
- Update supported agent definitions to match
vercel-labs/skillsv1.5.9.
Closes #3591610 (closed). Code is authored with an AI coding agent.