PICK SEA Sprint C: sea stage card viewer — FLIP in, SPIN/FYI, deposit/re-expand — TDD

- sea.js: SeaDeal module — openStage() shows big card viewer w. flip-in animation;
  SPIN toggles stage-card--reversed; FYI shows energies/operations (Energy/Operation
  titles, PRV/NXT nav); backdrop click deposits card to slot; click deposited slot
  re-opens stage; resetHand() clears hand on DEL
- sea_deck view: adds name_group/name_title/reversal/keywords_upright/keywords_reversed/
  energies/operations to each card dict (full sig-select stage data set)
- _sea_overlay.html: data-sea-user-polarity attr; sea stage HTML (sig-stage-card shell
  + fan-card-face-upright/reversal structure + sea-stat-block w. SPIN/FYI/PRV/NXT);
  FLIP click calls SeaDeal.openStage(); _fillPos removed (sea.js handles slot fill);
  _reset calls SeaDeal.resetHand()
- room.html: sea.js included alongside sig-select.js
- _card-deck.scss: sea-stage layout (fixed overlay, backdrop, content row); sea-stage-card
  w. @keyframes sea-flip-in (3D rotateY perspective); sea-stat-block scoped styles
  incl. SPIN/FYI btns, stat faces, sig-info FYI panel
- SeaDealSpec.js: 20 Jasmine specs — openStage, SPIN, FYI, backdrop dismiss, slot re-expand

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

src/static/tests/SpecRunner.html

@@ -22,6 +22,7 @@
     <script src="RoleSelectSpec.js"></script>
     <script src="TraySpec.js"></script>
     <script src="SigSelectSpec.js"></script>
+    <script src="SeaDealSpec.js"></script>
     <script src="NatusWheelSpec.js"></script>
     <script src="NoteSpec.js"></script>
     <script src="NotePageSpec.js"></script>
@@ -32,6 +33,7 @@
     <script src="/static/apps/epic/role-select.js"></script>
     <script src="/static/apps/epic/tray.js"></script>
     <script src="/static/apps/epic/sig-select.js"></script>
+    <script src="/static/apps/epic/sea.js"></script>
     <script src="/static/apps/gameboard/d3.min.js"></script>
     <script src="/static/apps/gameboard/natus-wheel.js"></script>
     <!-- Jasmine env config (optional) -->