PICK SEA Sprint B: deck stacks, OK btn, card draw, LOCK HAND/DEL — TDD

- _sea_overlay.html: DEAL btn replaced by two .sea-deck-stack--levity/gravity
  piles; .sea-pos-cover + .sea-pos-cross overlaid on center sig slot; LOCK HAND
  (disabled) + DEL (.btn-danger) in .sea-form-actions; data-sea-deck-url attr
- sea overlay inline JS: _fetchDeck() loads shuffled piles from sea_deck endpoint;
  stack click → _showOk(); click elsewhere → _hideOk(); OK click → _fillPos()
  in next spread-order position; DEL → _reset(); LOCK HAND enables at 6 fills
- SPREAD_ORDER constants for waite-smith + escape-velocity spread types
- sea_deck view: shuffles full equipped deck minus all seated Significators,
  splits into levity (first half) + gravity (second half) JSON arrays
- epic:sea_deck URL registered
- sea_partial view: ctx['room'] = room added (fixes NoReverseMatch for sea_deck URL)
- _card-deck.scss: .sea-card-slot--filled; .sea-pos-cover/cross absolute overlay;
  .sea-deck-stack + .sea-stack-face; .sea-form-actions layout; removed old DEAL rule
- 9 Sprint B FTs green; 3 Sprint A FTs green; 730 ITs green

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

@@ -1108,6 +1108,40 @@ def natus_save(request, room_id):
     return JsonResponse({'id': char.id, 'confirmed': char.is_confirmed})
 
 
+@login_required
+def sea_deck(request, room_id):
+    """Shuffled deck lists (levity + gravity halves) for PICK SEA draw.
+
+    Excludes all Significators already claimed by seated gamers.
+    Returns {levity: [{id, name, arcana, suit, number, levity_qualifier,
+             gravity_qualifier}], gravity: [...]}
+    """
+    import random as _random
+    room = Room.objects.get(id=room_id)
+    seat = _canonical_user_seat(room, request.user)
+    if seat is None:
+        return HttpResponse(status=403)
+
+    deck = seat.deck_variant
+    if not deck:
+        return JsonResponse({'levity': [], 'gravity': []})
+
+    sig_ids = set(
+        room.table_seats.exclude(significator__isnull=True)
+        .values_list('significator_id', flat=True)
+    )
+
+    available = list(
+        TarotCard.objects.filter(deck_variant=deck)
+        .exclude(id__in=sig_ids)
+        .values('id', 'name', 'arcana', 'suit', 'number',
+                'levity_qualifier', 'gravity_qualifier')
+    )
+    _random.shuffle(available)
+    mid = len(available) // 2
+    return JsonResponse({'levity': available[:mid], 'gravity': available[mid:]})
+
+
 @login_required
 def sea_partial(request, room_id):
     """Return the rendered sea overlay partial for in-page injection after sky confirm."""
@@ -1115,5 +1149,6 @@ def sea_partial(request, room_id):
     ctx = _role_select_context(room, request.user)
     if not ctx.get('sky_confirmed'):
         return HttpResponse(status=403)
+    ctx['room'] = room
     return render(request, 'apps/gameboard/_partials/_sea_overlay.html', ctx)