chore(release): prepare 4.2.2

fix(release): keep Finder metadata off app

fix(release): retry transient timestamp failures

release: publish Peekaboo 4.0.0

@steipete/peekaboo@4.0.0 is live on npm, so the source now claims a release
that exists. Restores the dated 4.0.0 changelog headings and shipped-tense
copy reverted by openclaw#372, and adds the signed 4.0.0 Sparkle appcast item.

chore(release): update appcast for 3.10.0

chore(release): publish 3.9.10 appcast

test(dock): cover bounded process waits

chore(release): prepare 3.9.8

chore(release): add 3.9.7 appcast

fix(release): strip debug entitlement from CLI artifacts