setup_sig_session: wire deck contributions; _room_deck_variant replaces owner.equipped_deck

- setup_sig_session: drop _ensure_earthman() (deck seeded by migration); set
  deck_variant=earthman on all TableSeats; users get unlocked_decks add but
  equipped_deck=None (seat owns the deck); docstring documents role-pair mapping
- _room_deck_variant(room): new helper looks up deck from any seated deck_variant,
  falls back to owner.equipped_deck for legacy rooms
- sig_deck_cards / _sig_unique_cards: use _room_deck_variant instead of
  owner.equipped_deck — sig cards now work even when users have unequipped their deck
  after role confirmation

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

src/functional_tests/management/commands/setup_sig_session.py

@@ -2,8 +2,13 @@
 Management command for manual multi-user sig-select testing.
 
 Creates (or reuses) a room with all 6 gate slots filled, roles assigned,
-and table_status=SIG_SELECT.  Prints one pre-auth URL per gamer so you can
-paste them into 6 Firefox Multi-Account Container tabs.
+deck contributions wired, and table_status=SIG_SELECT.  Prints one pre-auth
+URL per gamer so you can paste them into 6 Firefox Multi-Account Container tabs.
+
+Deck contribution by role pair (same segment, levity vs gravity pole):
+  PC & BC → Brands + Crowns     (levity / gravity)
+  SC & AC → Blades + Grails     (levity / gravity)
+  NC & EC → Trumps              (levity / gravity)
 
 Usage:
     python src/manage.py setup_sig_session
@@ -15,7 +20,7 @@ from django.contrib.auth import BACKEND_SESSION_KEY, HASH_SESSION_KEY, SESSION_K
 from django.contrib.sessions.backends.db import SessionStore
 from django.core.management.base import BaseCommand
 
-from apps.epic.models import DeckVariant, GateSlot, Room, TableSeat, TarotCard
+from apps.epic.models import DeckVariant, GateSlot, Room, TableSeat
 from apps.lyric.models import User
 
 
@@ -31,28 +36,6 @@ GAMERS = [
 ROLES = ["PC", "NC", "EC", "SC", "AC", "BC"]
 
 
-def _ensure_earthman():
-    """Return (or create) the Earthman DeckVariant with enough sig-deck cards seeded."""
-    earthman, _ = DeckVariant.objects.get_or_create(
-        slug="earthman",
-        defaults={"name": "Earthman Deck", "card_count": 108, "is_default": True},
-    )
-    _NAME = {11: "Maid", 12: "Jack", 13: "Queen", 14: "King"}
-    for suit in ("WANDS", "PENTACLES", "SWORDS", "CUPS"):
-        for number in (11, 12, 13, 14):
-            TarotCard.objects.get_or_create(
-                deck_variant=earthman,
-                slug=f"{_NAME[number].lower()}-of-{suit.lower()}-em",
-                defaults={
-                    "arcana": "MINOR",
-                    "suit": suit,
-                    "number": number,
-                    "name": f"{_NAME[number]} of {suit.capitalize()}",
-                },
-            )
-    return earthman
-
-
 def _make_session(user):
     session = SessionStore()
     session[SESSION_KEY] = str(user.pk)
@@ -71,7 +54,7 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         base_url = options["base_url"].rstrip("/")
-        earthman = _ensure_earthman()
+        earthman = DeckVariant.objects.get(slug="earthman")
 
         # ── Users ────────────────────────────────────────────────────────────
         users = []
@@ -79,9 +62,11 @@ class Command(BaseCommand):
             user, _ = User.objects.get_or_create(email=email)
             user.is_staff = True
             user.is_superuser = True
-            if not user.equipped_deck:
-                user.equipped_deck = earthman
+            # Deck will be assigned to seat below; ensure it's in unlocked_decks
+            # but leave equipped_deck=None (seat assignment owns it)
+            user.equipped_deck = None
             user.save()
+            user.unlocked_decks.add(earthman)
             users.append(user)
 
         # ── Room ─────────────────────────────────────────────────────────────
@@ -104,11 +89,21 @@ class Command(BaseCommand):
         room.gate_status = Room.OPEN
         room.save()
 
-        # ── Table seats + roles ──────────────────────────────────────────────
+        # ── Table seats + roles + deck contributions ─────────────────────────
+        # PC/NC/SC → levity pole; BC/EC/AC → gravity pole.
+        # Each role pair shares a deck segment:
+        #   PC & BC → Brands + Crowns
+        #   SC & AC → Blades + Grails
+        #   NC & EC → Trumps
         for i, (user, role) in enumerate(zip(users, ROLES), start=1):
             TableSeat.objects.update_or_create(
                 room=room, slot_number=i,
-                defaults={"gamer": user, "role": role, "role_revealed": True},
+                defaults={
+                    "gamer": user,
+                    "role": role,
+                    "role_revealed": True,
+                    "deck_variant": earthman,
+                },
             )
 
         room.table_status = Room.SIG_SELECT