Add web front-end and fix API issues

node_modules/concurrently/dist/bin/normalize-cli-command.js

@@ -0,0 +1,15 @@
+export function normalizeCliCommand(command) {
+    if (command.length < 2) {
+        return command;
+    }
+    const quote = command[0];
+    const last = command.at(-1);
+    if ((quote !== '"' && quote !== "'") || last !== quote) {
+        return command;
+    }
+    const inner = command.slice(1, -1);
+    if (inner.includes(quote)) {
+        return command;
+    }
+    return inner;
+}