fix: two-handed weapons no longer show off-hand slot option in Equipment tab

docs/circular-deps.txt

@@ -1,4 +1,4 @@
 # Circular Dependencies
-Generated: 2026-05-27T09:18:37.387Z
+Generated: 2026-05-27T09:26:33.586Z
 
 No circular dependencies found. ✅

docs/dependency-graph.json

@@ -1,6 +1,6 @@
 {
   "_meta": {
-    "generated": "2026-05-27T09:18:35.464Z",
+    "generated": "2026-05-27T09:26:31.763Z",
     "description": "Import dependency graph for src/lib/game. Keys are files, values are arrays of files they import.",
     "usage": "To find what a file affects, search for its path in the VALUES. To find what a file depends on, look at its KEY entry."
   },

src/lib/game/data/equipment/utils.ts

@@ -46,9 +46,9 @@ export function getValidSlotsForCategory(category: EquipmentCategory): Equipment
 
 // Get valid slots for a specific equipment type (considers 2-handed weapons)
 export function getValidSlotsForEquipmentType(equipType: EquipmentType): EquipmentSlot[] {
-  // 2-handed weapons occupy both main hand and offhand
+  // 2-handed weapons can only be equipped in the main hand (they occupy both hands)
   if (equipType.twoHanded) {
-    return ['mainHand', 'offHand'];
+    return ['mainHand'];
   }
   
   // Otherwise use category-based slots