feat: implement browser extension UI with WebAssembly integration

docs/kvstore.md

@@ -54,7 +54,7 @@ async fn main() {
 use kvstore::{KVStore, WasmStore};
 
 // Must be called from an async context (e.g., JS Promise)
-let store = WasmStore::open("mydb").await.unwrap();
+let store = WasmStore::open("vault").await.unwrap();
 store.set("foo", b"bar").await.unwrap();
 let val = store.get("foo").await.unwrap();
 // Use the value as needed