fix: complete directional CouchDB status integration

Keep editor comparison counters compact with their directional CSS classes,
and document selector migration plus an optional CSS animation snippet.

Extend real Obsidian coverage for push comparison with zero transfers,
independent expiry, idle and error states, and the documented snippet.
Prepare the fixture editor before loading the plug-in so the UI scenario
owns its setup order.

styles.css

@@ -857,7 +857,8 @@ body.is-mobile .livesync-compatibility-review-notice {
     ~ .livesync-stat-item:not(
         .livesync-stat-push-remaining,
         .livesync-stat-pull-remaining,
-        .livesync-stat-ff,
+        .livesync-stat-ff-push,
+        .livesync-stat-ff-pull,
         .livesync-stat-p2p
     ) {
     margin-inline-start: 1em;