my_sea_visit: share the owner picker styling (--duoUser felt + fill) when showing the draw — TDD

The bud-sea (visitor) VIEW DRAW rendered the cross but kept data-phase=landing,
so it sat on the --priUser landing bg instead of the owner's --duoUser picker
felt, and its #id_my_sea_visit_draw wrapper wasn't a flex container so the
picker didn't fill/centre like the owner's.

DRY fix (no new visit-only styling):
- VIEW DRAW toggle now flips .my-sea-page data-phase landing<->picker, so the
  cross reuses the shared .my-sea-page[data-phase=picker] --duoUser felt rule.
- .my-sea-visit-draw is display:contents, so its .my-sea-picker child becomes a
  direct flex item of .my-sea-page and fills/centres via the existing
  .my-sea-picker sizing.

FT asserts the page flips to data-phase=picker on VIEW DRAW.

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/static_src/scss/_gameboard.scss

@@ -337,6 +337,15 @@ body.page-gameboard {
     min-height: 0;
 }
 
+// Spectator (bud-sea) draw wrapper — `display: contents` makes it layout-
+// transparent so its `.my-sea-picker` child becomes a direct flex item of
+// `.my-sea-page` and fills/centres EXACTLY like the owner's picker, with no
+// separate visit-only sizing rules (DRY). VIEW DRAW toggles its display + the
+// page's data-phase, so the cross rides the shared picker felt + layout.
+.my-sea-visit-draw {
+    display: contents;
+}
+
 .my-sea-picker {
     flex: 1;
     min-height: 0;