Add web front-end and fix API issues

node_modules/concurrently/dist/bin/console-codepage.d.ts

@@ -0,0 +1,13 @@
+import { spawnSync as baseSpawnSync } from 'node:child_process';
+export type SpawnSync = typeof baseSpawnSync;
+/**
+ * On Windows, concurrently pipes child-process output through a freshly-allocated console whose
+ * codepage may not be UTF-8, garbling non-ASCII output from commands that rely on it (see
+ * open-cli-tools/concurrently#302). This sets the console's codepage to UTF-8 once, which spawned
+ * children then inherit, and returns a function that restores the original codepage.
+ *
+ * No-ops (and never throws) if not on Windows, if the codepage is already UTF-8, or if reading/setting
+ * it fails for any reason -- this is a best-effort convenience, never something that should block
+ * concurrently from running.
+ */
+export declare function ensureUtf8Codepage(spawnSync?: SpawnSync, process?: Pick<NodeJS.Process, 'platform'>): () => void;