DRY_RUN now uses 1/0 instead of "true"/"false" across all onboard scripts.
common.sh: add run() — wraps mutations; prints "[dry-run] would: ..." when
DRY_RUN=1. Exported via `export -f run` so child bash processes inherit it.
onboard.sh: remove the `--dry-run → dryrun "Would execute" → continue` bypass.
Steps now always execute; DRY_RUN=1 is exported so each step's own run()
calls handle simulation. The orchestrator no longer needs to know step internals.
remote.sh: update DRY_RUN checks to [ "${DRY_RUN:-0}" = 1 ] for consistency.
00-access.sh: remove all if/else DRY_RUN blocks; replace with:
- Mutations (ssh-copy-id, curl install, tailscale up) wrapped in run()
- Probes (SSH BatchMode test, command -v, _ts_state) run unconditionally
so dry-run reports real current state ("key present → skip" vs "would: ...")
- Stage 3 verify runs always; SSH failure is die in live mode, warn in
dry-run (Tailscale not yet joined is expected on a fresh node)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>