Fix NPC movement animation sync and minimap marker behavior

- Use interpolated moveInstanceTo() for normal server NPC position deltas so walk/run animations play instead of visual sliding
- Keep hard snaps only for dead units and large corrections/teleports
- Add per-creature render position cache to drive interpolation safely across frames and clear it on spawn/despawn/reset
- Keep minimap controls visible regardless of quest-status availability
- Correct minimap NPC/quest marker projection mapping to match minimap shader transform
- Add optional nearby NPC minimap dots setting (default OFF), exposed in Gameplay > Interface and persisted in settings

include/ui/game_screen.hpp

@@ -97,6 +97,7 @@ private:
     int pendingUiOpacity = 65;
     bool pendingMinimapRotate = false;
     bool pendingMinimapSquare = false;
+    bool pendingMinimapNpcDots = false;
     bool pendingSeparateBags = true;
     bool pendingAutoLoot = false;
     bool pendingUseOriginalSoundtrack = true;
@@ -105,6 +106,7 @@ private:
     float uiOpacity_ = 0.65f;
     bool minimapRotate_ = false;
     bool minimapSquare_ = false;
+    bool minimapNpcDots_ = false;
     bool minimapSettingsApplied_ = false;
     bool volumeSettingsApplied_ = false;  // True once saved volume settings applied to audio managers