docs: setup-instance step 15 names --no-push for a local-only first publish; gates.md and a docstring follow #159

Files changed:
- CHANGES.md
- VERSION
- instructions/gates.md
- instructions/setup-instance.md
- tools/chemenu/commands/git_publish.py

tools/chemenu/commands/git_publish.py

@@ -914,7 +914,7 @@ def rebase_review_message(outcome: ReconcileOutcome, remote: str, branch: str, c
 
 def _reconcile_summary(outcome: ReconcileOutcome, remote: str, branch: str) -> str:
     """One line for the outcomes that do not fail or gate - what to tell the caller, or "" for
-    the ones not worth narrating every time (`up-to-date`, no remote)."""
+    `conflict` and `needs-review`, which `apply_reconcile` raises on instead."""
     if outcome.status == "fast-forwarded":
         return f"Pulled {len(outcome.pulled_commits)} commit(s) from {remote}/{branch}."
     if outcome.status == "local-ahead":