Improve runtime stutter handling and ground clutter performance

- reduce per-tile ground clutter generation pressure and enforce tighter caps to avoid spikes

- remove expensive detail dedupe scans from the hot render path

- add progressive/lazy clutter updates around player movement to smooth frame pacing

- lower noisy runtime INFO logging to DEBUG/throttled paths

- keep terrain/game screen updates responsive while preserving existing behavior

src/rendering/character_renderer.cpp

@@ -2156,7 +2156,7 @@ bool CharacterRenderer::attachWeapon(uint32_t charInstanceId, uint32_t attachmen
     wa.offset = offset;
     charInstance.weaponAttachments.push_back(wa);
 
-    core::Logger::getInstance().info("Attached weapon model ", weaponModelId,
+    core::Logger::getInstance().debug("Attached weapon model ", weaponModelId,
         " to instance ", charInstanceId, " at attachment ", attachmentId,
         " (bone ", boneIndex, ", offset ", offset.x, ",", offset.y, ",", offset.z, ")");
     return true;