Ask the installer who owns the Hermes wrapper

Three files spelled out the line that marks ~/.local/bin/hermes as Omarchy's:
the installer that writes it, Remove Preinstalls, and the migration. Two of
them were copies, and a change to what ownership means would have left them
matching a line nobody writes any more -- Remove Preinstalls quietly sweeping
nothing, the migration mistaking Omarchy's own wrapper for a stranger's.

omarchy-install-hermes-cli --owns answers it now, and the other two ask. The
installer's own metadata was also a flag behind: --check has been there since
this landed and was never listed.

A test pins the marker to one file, so a second copy fails rather than drifts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

migrations/1787760281.sh

@@ -15,12 +15,11 @@ fi
 
 # Anything already answering to hermes that this installer did not write --
 # an official install, a hand-rolled wrapper, even a dangling link -- belongs to
-# the user and stays exactly as it is.
+# the user and stays exactly as it is. The installer is asked rather than
+# matched against here, so there is one answer to who owns that wrapper.
 wrapper="$HOME/.local/bin/hermes"
-if [[ -e $wrapper || -L $wrapper ]]; then
-  if [[ -L $wrapper || ! -f $wrapper ]] || ! grep -qxF '# Written by omarchy-install-hermes-cli.' "$wrapper"; then
-    exit 0
-  fi
+if [[ -e $wrapper || -L $wrapper ]] && ! omarchy-install-hermes-cli --owns; then
+  exit 0
 fi
 
 omarchy-install-hermes-cli