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/urls.py

@@ -28,4 +28,5 @@ urlpatterns = [
     path('room/<uuid:room_id>/natus/preview', views.natus_preview, name='natus_preview'),
     path('room/<uuid:room_id>/natus/save', views.natus_save, name='natus_save'),
     path('room/<uuid:room_id>/sea/partial', views.sea_partial, name='sea_partial'),
+    path('room/<uuid:room_id>/sea/deck', views.sea_deck, name='sea_deck'),
 ]