chore: consolidate platform split checks

.gitignore

@@ -136,6 +136,18 @@ dist
 .yarn/install-state.gz
 .pnp.*
 
+# Local WebUI test/build scratch directories
+.component-test-build/
+.module-test-build/
+.policy-test-build/
+.template-preview-test-build/
+.import-test-build/
+webui/.component-test-build/
+webui/.module-test-build/
+webui/.policy-test-build/
+webui/.template-preview-test-build/
+webui/.import-test-build/
+
 # ---> Python
 # Byte-compiled / optimized / DLL files
 __pycache__/