tarot card icons + ranks; sig fallback for pre-sync Characters; DECKS label sizing — TDD

- migration 0011: The Nomad (0) → fa-hat-cowboy; The Schizo (1) → fa-hat-wizard
- corner_rank: non-MAJOR pip card 1 → 'A' (Ace); court unchanged (M/J/Q/K); TDD
- 17 unit model tests for corner_rank + suit_icon
- _role_select_context: my_tray_sig falls back to seat.significator when
  confirmed_char.significator is None (Characters created before natus_save sync)
- _card-deck.scss: DECKS label bigger (1rem, 0.32em letter-spacing) to fill
  stack height; sea-stack-name: opacity 0.6, scaleY(1.5), margin-top -0.4rem
  partially under face; sea-stack-face z-index:1

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

src/apps/epic/tests/integrated/test_views.py

@@ -1855,6 +1855,16 @@ class PickSeaRenderingTest(TestCase):
         self.assertIn("user_polarity", response.context)
         self.assertEqual(response.context["user_polarity"], "levity")  # PC is levity
 
+    def test_my_tray_sig_falls_back_to_seat_when_char_sig_is_none(self):
+        """Characters created before the sig-sync fix have significator=None; fall back to seat."""
+        Character.objects.create(
+            seat=self.pc_seat,
+            significator=None,
+            confirmed_at=timezone.now(),
+        )
+        response = self.client.get(self.url)
+        self.assertEqual(response.context["my_tray_sig"], self.sig_card)
+
     def test_my_tray_sig_comes_from_character_significator_when_confirmed(self):
         """When sky_confirmed, my_tray_sig reads from Character.significator (not TableSeat)."""
         char = Character.objects.create(