fix(editor): NPC default scale 3x, right-side panels track window resize

- NPC default scale changed from 1.0 to 3.0 so creatures are visible
  from typical editing altitude (WoW creature models are very small at
  scale 1.0)
- Properties/Info panel uses ImGuiCond_Always for position so it stays
  pinned to the right edge when the window is resized (was getting lost
  off-screen before)

tools/editor/npc_spawner.hpp

@@ -40,7 +40,7 @@ struct CreatureSpawn {
     uint32_t faction = 0; // 0 = neutral
 
     // Display
-    float scale = 1.0f;
+    float scale = 3.0f;
 
     // Behavior
     CreatureBehavior behavior = CreatureBehavior::Stationary;