A launchd-spawned process gets separate TCC attribution from the LaunchServices
app, so the out-of-process refresher prompted for "access data from other apps"
on every run regardless of the GUI's grant. Remove it entirely: the in-app loop
(timer survives sleep, popover-open recovery) is the source of truth and now
writes menubar-status.json on each successful refresh. On upgrade, any leftover
com.codeburn.refresh LaunchAgent is unloaded and deleted.
Run CodeBurn's own signed binary in --refresh-once mode under the LaunchAgent
so the spawned CLI inherits CodeBurn's TCC grant. The bare-node shell script
prompted "node would like to access data from other apps" because launchd-
spawned children lose the signed app's TCC attribution. Drops the generated
shell script, scriptEnvironment, and per-period regeneration; the plist is now
static and period is read from UserDefaults at refresh time.
