docs(vscode-extension): add comments for clarity in sendToExtension and onMessage functions

Author: Ivanruii

apps/web/src/core/vscode/vscode-bridge.helpers.ts

@@ -15,14 +15,16 @@ const handlers = new Map<string, Set<AnyHandler>>();
 
 export const sendToExtension = (msg: AppMessage): void => {
   if (!isVSCodeEnv()) return;
+  // In VS Code webviews the parent origin is not a stable app URL.
+  // We post to parent and rely on origin/source checks in the bridge listeners.
   window.parent.postMessage(msg, '*');
 };
 
 export const onMessage = <T extends HostMessage['type']>(
   type: T,
   handler: HandlerFor<T>
 ): (() => void) => {
-  if (!isVSCodeEnv()) return () => {};
+  if (!isVSCodeEnv()) return () => { };
 
   const existing = handlers.get(type) ?? new Set<AnyHandler>();
   existing.add(handler as AnyHandler);