Order the migration notifier after graphical-session.target

omarchy-migrate-notify.service is a Type=oneshot wanted by
graphical-session.target, and systemd complements a target's Wants= with an
implicit After=, so the target waited for the notifier to exit. The notifier
does not exit quickly: it sends the notification through systemd-run --scope,
which is synchronous, and omarchy-notification-send -a blocks until the user
clicks. The target stayed in activating for as long as the toast was up.

wayland-wm-app-daemon.service is After=graphical-session.target and nothing
wants it, so uwsm-app starts it on demand. Clicking the notification runs
omarchy-launch-floating-terminal-with-presentation, which execs uwsm-app,
which blocks on a systemctl --user restart of that daemon -- a job queued
behind the very target the clicked notifier was holding open. The terminal
never opened; uwsm-app gave up on its own pipe timeout instead.

Declaring After= on the wanted unit suppresses the implicit dependency rather
than forming a cycle, so the target is reached without waiting and the
notifier runs behind it.

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

docs/update-process.md

@@ -150,7 +150,8 @@ sudo pacman -Syu
   ├─ pre-transaction guard aborts and tells the user to run omarchy update
   └─ if explicitly bypassed, upgrades omarchy and related packages
   └─ at that user's next login
-       ├─ omarchy-migrate-notify.service starts with graphical-session.target
+       ├─ graphical-session.target starts
+       ├─ omarchy-migrate-notify.service starts after it
        ├─ omarchy-migrate-notify checks omarchy-migrate --pending
        ├─ if this user has missing migration state, show notification
        └─ click opens terminal: omarchy-migrate
@@ -173,6 +174,9 @@ Fallbacks:
   migration that repoints it only runs for users who run an update — the
   opposite of who the notifier is for. The alias can be dropped once installs
   have run migration `1785095882`.
+- The notifier is ordered after `graphical-session.target`, so an action that
+  launches through `uwsm-app` cannot block the target that gates UWSM's app
+  daemon.
 - The notifier waits for a live notification server before sending, because
   `graphical-session.target` can be reached before the shell claims
   `org.freedesktop.Notifications`.