* fix(ui): block renaming config map keys that still hold redacted secrets
Renaming a map entry whose value is the server redaction sentinel moves
the sentinel to a new key. The gateway's exact-key restore then fails
closed forever (dead-end draft with a Retry that can never succeed), and
when the rename is folded with a delete of the target key inside one
autosave window, the restore silently binds the deleted entry's old
credential under the new name and drops the intended one — a green
Saved with the wrong secret.
The rename handler is the only owner that knows a sentinel was moved
rather than typed, so it now rejects the rename like the existing
duplicate-key guard and explains the retype path via input validity.
Plain values rename exactly as before.
* chore(ui): record startup JS growth for the redacted-rename guard string
The renameRedactedBlocked validity message in the startup en locale adds
65 gzip bytes over the recorded baseline; record the CI-measured size
per the established baseline pattern.