Tear down the mise Hermes CLI on Remove Hermes

Remove Hermes dropped the desktop package and its ~/.hermes runtime but
never touched the mise CLI, on the assumption the install-time handoff
had already removed it. A CLI the app never superseded -- an interrupted
install, or the terminal CLI from before the app existed -- was left
stranded on PATH after uninstall.

Add a --remove mode to omarchy-install-hermes-cli that performs the same
teardown the desktop takeover already does (mise rm -g + mise uninstall,
and the marked stub), and call it from omarchy-remove-ai-hermes. The tool
spec and ownership marker stay defined in one place, so the takeover and
teardown paths cannot drift. Scoped to what Omarchy owns: a Hermes the
user installed themselves is left alone.

Co-Authored-By: Claude <noreply@anthropic.com>

bin/omarchy-install-hermes-cli

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # omarchy:summary=Install the Hermes CLI as a mise-backed wrapper in ~/.local/bin
-# omarchy:args=[--check|--now|--owns]
+# omarchy:args=[--check|--now|--owns|--remove]
 # omarchy:examples=omarchy install hermes cli | omarchy install hermes cli --now
 
 # Hermes pins every one of its dependencies exactly and declares
@@ -112,6 +112,25 @@ if [[ $mode == "--owns" ]]; then
   if ours; then exit 0; else exit 1; fi
 fi
 
+# --remove tears down a Hermes CLI this installer put in place -- the mise tool
+# it installs and the stub it marks -- so Remove Hermes clears a CLI the app
+# never superseded (an interrupted install, or the terminal CLI from before the
+# app existed) rather than leaving it stranded on PATH. Scoped to what is ours:
+# the tool spec is this installer's, and the stub goes only when it carries the
+# marker, so a Hermes the user installed themselves is untouched. Idempotent --
+# nothing installed means nothing to do -- and it is the same teardown the
+# desktop takeover above performs, kept in one place so the two cannot drift.
+if [[ $mode == "--remove" ]]; then
+  mise rm -g "$tool" >/dev/null 2>&1 || true
+  mise uninstall --all "$tool" >/dev/null 2>&1 || true
+
+  if ours; then
+    rm -f "$HOME/.local/bin/hermes"
+  fi
+
+  exit 0
+fi
+
 # --check lets callers tell a cold stub from a working one before they commit
 # to a path that assumes Hermes is ready.
 if [[ $mode == "--check" ]]; then