Fix combat interaction, creature skin fallback, clipping, and minimap marker anchoring

- Right-click attack fallback for non-interactable hostile creatures
- Robust creature skin path resolution for WotLK/non-humanoid display skin fields
- Strengthened client-side anti-overlap spacing for active melee targets (including wolf/worg models)
- Minimap questgiver markers now use live minimap view radius and exact minimap center to prevent player-relative drift

include/rendering/minimap.hpp

@@ -39,6 +39,7 @@ public:
 
     void setSquareShape(bool square) { squareShape = square; }
     bool isSquareShape() const { return squareShape; }
+    float getViewRadius() const { return viewRadius; }
 
     void zoomIn() { viewRadius = std::max(100.0f, viewRadius - 50.0f); }
     void zoomOut() { viewRadius = std::min(800.0f, viewRadius + 50.0f); }