docs(cli): document current publish workflow

[jrusso1020]

The CLI package README omits publish, so readers cannot discover hosted sharing or its authentication and visibility options there. Add current directory examples, --public/--yes guidance, signed-in update/team-space behavior, and a link to the full reference. Explain that a missing or inaccessible update target can create a new project.

Refreshes #1950 with credit to @tianma-if in the signed commit.

Validation: checked current command and upload handling; parsed all six documented argument forms and generated help from the current Citty schema without running the upload handler; verified the documentation link; formatting, diff checks, and required commit hooks passed. No project was uploaded.

[miguel-heygen]

Reviewed f6b43bb94104811b87acf71fcb714cfa5989e711.

packages/cli/README.md:74 documents the existing publish workflow accurately, including claimed-project visibility and the new-project fallback when an update target is unavailable. Traced the current argument schema, authentication gate, staged/direct upload metadata, claim-token URL and printed status paths. Contributor credit to @tianma-if is preserved in the commit.

No findings. Documentation review only; no live upload or claim was performed.

No prior reviews or comments were present at precheck. CI has no failed checks at this check, but pending checks remain; this approval is on code/documentation merits and is not a CI-complete or merge-ready claim.

— Magi

Verdict: APPROVE
Reasoning: The change matches the current implementation and no blocking regression was found within the stated verification scope. Required CI must still finish successfully.