New scripts/release_control/format_staged_frontend.py mirrors the staged
Go formatter: formats staged frontend-modern/src {ts,tsx,css,json} blobs
through prettier --stdin-filepath, writes results back to the index
directly (no broad restaging), syncs the worktree only when it matches
the previously staged content, and iterates to a fixed point to absorb
prettier's occasional non-idempotence. Skips gracefully when prettier is
not installed (fresh clones, linked worktrees without node_modules).
Wired into .husky/pre-commit after the Go formatter, with unit tests in
the governance battery, a README note, and a .gitignore allowlist entry.
With the one-time sweep in the previous commits, prettier drift can no
longer re-accumulate and make format stays clean on a clean tree.
rcourtman
d89e3e3163