AFTER: measured runtime evidence
Each launch exited normally with code 0.
Registration helpers exclude unrelated directory-handler queries.

Launch 1: initial launch; registration helpers {'updateDesktopDatabase': 1, 'xdgMimeDefault': 1}
Launch 2: unchanged relaunch; registration helpers {'updateDesktopDatabase': 0, 'xdgMimeDefault': 0}
  desktop entry: mtime_ns 1794370311038379819 -> 1794370311038379819; identical bytes=True; write opens=0
  persistent icon: mtime_ns 1794370311033379895 -> 1794370311033379895; identical bytes=True; write opens=0
  MIME cache: mtime_ns 1794370320918233564 -> 1794370320918233564; identical bytes=True; write opens=0
Launch 3: missing MIME cache; registration helpers {'updateDesktopDatabase': 1, 'xdgMimeDefault': 1}
Launch 4: stale MIME cache; registration helpers {'updateDesktopDatabase': 1, 'xdgMimeDefault': 1}
Launch 5: changed desktop entry; registration helpers {'updateDesktopDatabase': 1, 'xdgMimeDefault': 1}
Launch 6: changed default; registration helpers {'updateDesktopDatabase': 0, 'xdgMimeDefault': 0}
Launch 7: damaged persistent icon; registration helpers {'updateDesktopDatabase': 0, 'xdgMimeDefault': 0}
Launch 8: unchanged after repair; registration helpers {'updateDesktopDatabase': 0, 'xdgMimeDefault': 0}
  desktop entry: mtime_ns 1794370432382939311 -> 1794370432382939311; identical bytes=True; write opens=0
  persistent icon: mtime_ns 1794370477829579980 -> 1794370477829579980; identical bytes=True; write opens=0
  MIME cache: mtime_ns 1794370434067924371 -> 1794370434067924371; identical bytes=True; write opens=0