Open DMs during sync catch-up instead of blocking on parent maps.

Prefer the direct route for m.direct rooms and allow joined space children before roomToParents finishes backfilling.

src/index.css

@@ -887,6 +887,12 @@ body.stationery-dark-theme {
   width: calc(100% + 25px) !important;
   max-width: none !important;
   box-sizing: border-box !important;
+  /* Gutter is only for post-it overflow paint — do not steal clicks from page-nav */
+  pointer-events: none;
+}
+
+.stationery [data-sidebar-scroll] > * {
+  pointer-events: auto;
 }
 
 .stationery [data-sidebar] > *,