deck contribution sprint 2 + Carte Blanche safeguards — TDD

Sprint 2 UI (game kit applet):
- _applet-game-kit.html: in-use deck → two disabled × buttons, .tt-deck-game-name;
  in-use Carte Blanche → two disabled × buttons, data-current-room-name,
  .tt-token-room-name; tooltip content mirrors kit bag panel (Default, card count,
  description, Stock version)
- gameboard.js buildMiniContent: 'In-Use' for tokens w. data-current-room-name set
- _kit_bag_panel.html: Deck section always renders (placeholder when unequipped)

View safeguards:
- select_role: look up existing deck from prior seat in same room before
  equipped_deck (Carte Blanche multi-seat); only unequip when using equipped_deck
- drop_token Carte: reject 409 if token.current_room is a different room;
  unequip from equipped_trinket on drop

ITs: SelectRoleMultiSeatTest (2), DropTokenViewTest +3 (carte drop, unequip, lock)

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

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

@@ -4,7 +4,7 @@ from django.test import TestCase
 from django.urls import reverse
 
 from apps.applets.models import Applet, UserApplet
-from apps.epic.models import DeckVariant
+from apps.epic.models import DeckVariant, Room, TableSeat
 from apps.lyric.models import Token, User
 
 
@@ -61,6 +61,45 @@ class GameboardViewTest(TestCase):
         [_] = self.parsed.cssselect("#id_game_kit #id_kit_dice_set")
 
 
+class GameboardDeckInUseTest(TestCase):
+    """Sprint 2: game kit applet renders in-use state for a deck assigned to an active seat."""
+
+    def setUp(self):
+        self.user = User.objects.create(email="gamer@test.io")
+        self.client.force_login(self.user)
+        Applet.objects.get_or_create(slug="game-kit", defaults={"name": "Game Kit", "context": "gameboard"})
+        self.earthman = DeckVariant.objects.get(slug="earthman")
+        self.room = Room.objects.create(name="Wildfire", owner=self.user)
+        self.seat = TableSeat.objects.create(
+            room=self.room, gamer=self.user, slot_number=1,
+            deck_variant=self.earthman,
+        )
+        response = self.client.get("/gameboard/")
+        self.parsed = lxml.html.fromstring(response.content)
+
+    def test_in_use_deck_don_is_disabled(self):
+        [don] = self.parsed.cssselect("#id_kit_earthman_deck .btn-equip")
+        self.assertIn("btn-disabled", don.get("class", ""))
+
+    def test_in_use_deck_doff_is_absent(self):
+        active_doff = self.parsed.cssselect(
+            "#id_kit_earthman_deck .btn-unequip:not(.btn-disabled)"
+        )
+        self.assertEqual(len(active_doff), 0)
+
+    def test_in_use_deck_tooltip_shows_game_name(self):
+        [label] = self.parsed.cssselect("#id_kit_earthman_deck .tt-deck-game-name")
+        self.assertIn("Wildfire", label.text_content())
+
+    def test_non_in_use_deck_has_normal_don(self):
+        fiorentine = DeckVariant.objects.get(slug="fiorentine-minchiate")
+        self.user.unlocked_decks.add(fiorentine)
+        response = self.client.get("/gameboard/")
+        parsed = lxml.html.fromstring(response.content)
+        [don] = parsed.cssselect("#id_kit_fiorentine_deck .btn-equip")
+        self.assertNotIn("btn-disabled", don.get("class", ""))
+
+
 class ToggleGameAppletsViewTest(TestCase):
     def setUp(self):
         self.user = User.objects.create(email="gamer@test.io")