PICK SEA: modal w. Celtic Cross layout + spread select; PICK SKY swaps to PICK SEA after sky save — TDD

- _role_select_context: at SKY_SELECT, compute sky_confirmed (confirmed Character exists for seat) + user_polarity
- room.html: PICK SEA btn + _sea_overlay.html when sky_confirmed; PICK SKY + natus overlay otherwise
- _sea_overlay.html: transparent cards col (6-position cross, Sig at center) left; priUser form col (spread select) right; NVM cancel; JS open/close via html.sea-open
- _natus.scss: .sea-* rules mirror natus layout w. reversed columns; crossing slot rotated; dotted empty slots; sig slot solid; width/max-width replaces min() to avoid rem+vw unit mix
- select defaults: "Celtic Cross, Waite-Smith" for levity (PC/NC/SC); "Celtic Cross, Escape Velocity" for gravity (EC/AC/BC)

Code architected by Disco DeDisco <discodedisco@outlook.com>
Git commit message Co-Authored-By:
Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/epic/views.py

@@ -342,6 +342,24 @@ def _role_select_context(room, user):
             ctx["sig_cards"] = gravity_sig_cards(room)
         else:
             ctx["sig_cards"] = []
+
+    if room.table_status == Room.SKY_SELECT:
+        user_role = _canonical_seat.role if _canonical_seat else None
+        user_polarity = None
+        if user_role in _LEVITY_ROLES:
+            user_polarity = 'levity'
+        elif user_role in _GRAVITY_ROLES:
+            user_polarity = 'gravity'
+        ctx["user_polarity"] = user_polarity
+        sky_confirmed = bool(
+            _canonical_seat and Character.objects.filter(
+                seat=_canonical_seat,
+                confirmed_at__isnull=False,
+                retired_at__isnull=True,
+            ).exists()
+        )
+        ctx["sky_confirmed"] = sky_confirmed
+
     return ctx