[feat] Vue node lifecycle management implementation

Implements reactive position tracking, viewport culling, and event-driven
node management for Vue-based node rendering system.

Ready for demo and developer handoff.

.husky/pre-commit.backup

@@ -0,0 +1,5 @@
+if [[ "$OS" == "Windows_NT" ]]; then
+  npx.cmd lint-staged
+else
+  npx lint-staged
+fi