add Carte Blanche trinket: equip system, gatekeeper multi-slot, mini tooltip portal; new token type Token.CARTE ('carte') with fa-money-check icon; migrations 0010-0012:

CARTE type, User.equipped_trinket FK, Token.slots_claimed field; post_save signal sets
equipped_trinket=COIN for new users, PASS for staff; kit bag now shows only the equipped
trinket in Trinkets section; Game Kit applet mini tooltip portal shows Equipped or Equip
Trinket per token; AJAX POST equip-trinket id updates equippedId in-place; equip btn
now works for COIN, PASS, and CARTE (data-token-id added to all three); Gatekeeper CARTE
flow: drop_token sets current_room (no slot reserved); each empty slot up to
slots_claimed+1 gets a drop-token-btn; slots_claimed high-water mark advances on fill,
never decrements; highest CARTE-filled slot gets NVM (release_slot); token_return_btn
resets current_room + slots_claimed + un-fills all CARTE slots; gate_status always returns
full template so launch-game-btn persists via HTMX when gate_status == OPEN; room.html
includes gatekeeper when GATHERING or OPEN; new FT test_trinket_carte_blanche.py (2
tests, both passing); 299 tests green

src/static_src/scss/_gameboard.scss

@@ -6,7 +6,7 @@ body.page-gameboard {
     overflow: hidden;
 
     .container {
-        overflow: hidden;
+        overflow: clip;
         display: flex;
         flex-direction: column;
         flex: 1;
@@ -109,6 +109,18 @@ body.page-gameboard {
     &.active { display: block; }
 }
 
+#id_mini_tooltip_portal {
+    position: fixed;
+    z-index: 9999;
+    font-size: 0.8em;
+    font-style: italic;
+    width: fit-content;
+    white-space: nowrap;
+    text-align: right;
+
+    &.active { display: block; }
+}
+
 @media (max-height: 500px) {
     body.page-gameboard {
         .container {