Revert "hardening: pre-push hook blocks tag pushes without release token"

This reverts commit e05d23f34e.

docs/CONTRIBUTING.org

@@ -94,17 +94,6 @@ ln -sf ../../scripts/pre-commit-repl-check .git/hooks/pre-commit
 #+end_src
 Runs automatically on ~git commit~.
 
-* Pre-Push Hook (Release Guard)
-
-Blocks tag pushes (~git push --tags~) without a release token:
-#+begin_src bash
-ln -sf ../../scripts/pre-push-release-guard .git/hooks/pre-push
-#+end_src
-To authorize a release: ~touch /tmp/passepartout-release-approved~
-The token is consumed on first successful push.  This prevents automated
-release tagging without human approval — a hard enforcement of the
-AGENTS.md release-permission rule.
-
 * Testing Tools
 
 ** TUI REPL (~/eval~)