031: a window of unacknowledged declarations is drained to the newest; the
rest are set aside and reported as superseded. 035: a file resource may say
create-once — written when absent, kept untouched when present (ADR 0087).
054: the bundle installs nftables and loads a base ruleset before the store
and broker, in the table the filter module later replaces (ADR 0088).
