docs(cli): document cloud push/pull and Personal-only sync/bisync

Update docs/cloud-cli.md for the docs site:
- Add a Team Workspaces push/pull section (additive, git-style transfers,
  the --on-conflict {fail|keep-local|keep-cloud|keep-both} resolution, and the
  no-baseline limitations tracked by #862).
- Mark `sync` and `bisync` as Personal-workspace-only mirrors and point Team
  users at push/pull, with a Personal-vs-Team overview table.
- Fix stale command namespace: `bm project sync|bisync|check|bisync-reset` ->
  `bm cloud ...` (these live under `bm cloud`, not `bm project`).
- Add push/pull to the command reference and the summary workflows.

Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez