refactor(navigation): scrollToFocusedNote takes an options object

Smooth-scroll for the anchor jump when the target note is already
stacked, instant otherwise. While threading the new flag, the four
positional params got hard to read, so collapse them into
{ noteId, notes, hash, smoothHash } and update all call sites.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/StackedPublicNote.vue

@@ -97,7 +97,7 @@ watch(
   >
     <a
       class="title-stacked-note-link"
-      @click.prevent="scrollToFocusedNote(didrkey)"
+      @click.prevent="scrollToFocusedNote({ noteId: didrkey })"
     >
       <div
         class="title-stacked-note breadcrumbs text-sm"