Summary of Fixes

Issue 1: Slot Name Mismatch
  - Equipment modal used armor, accessory but API uses chest, accessory_1
  - Updated to all 8 API slots: weapon, off_hand, helmet, chest, gloves, boots, accessory_1, accessory_2

  Issue 2: HTMX Request Not Firing (the real blocker)
  - onclick=closeModal() was removing the button from DOM before HTMX could send the request
  - Changed to hx-on::after-request=closeModal() so modal closes after the request completes

public_web/app/views/game_views.py

@@ -1323,6 +1323,10 @@ def inventory_equip(session_id: str):
     if not item_id:
         return '<div class="error">No item selected</div>', 400
 
+    if not slot:
+        logger.warning("equip_missing_slot", item_id=item_id)
+        return '<div class="error">No equipment slot specified</div>', 400
+
     try:
         # Get session to find character
         session_response = client.get(f'/api/v1/sessions/{session_id}')
@@ -1333,17 +1337,14 @@ def inventory_equip(session_id: str):
             return '<div class="error">No character found</div>', 400
 
         # Equip the item via API
-        payload = {'item_id': item_id}
-        if slot:
-            payload['slot'] = slot
-
+        payload = {'item_id': item_id, 'slot': slot}
         client.post(f'/api/v1/characters/{character_id}/inventory/equip', payload)
 
         # Return updated character panel
         return redirect(url_for('game.character_panel', session_id=session_id))
 
     except APIError as e:
-        logger.error("failed_to_equip_item", session_id=session_id, item_id=item_id, error=str(e))
+        logger.error("failed_to_equip_item", session_id=session_id, item_id=item_id, slot=slot, error=str(e))
         return f'<div class="error">Failed to equip item: {e}</div>', 500