feat: 404 page with dir list

Author: Kinfe123

README.md

@@ -7,6 +7,7 @@ A minimal dev server with HMR (Hot Module Replacement) for TypeScript, TSX, CSS,
 - **Zero config** — Works out of the box
 - **Config file** — Optional `mini-dev.config.ts` or `mini-dev.config.js`
 - **public/ directory** — Static assets (favicon, images, robots.txt) served at `/`
+- **404 page** — Custom 404 with a list of visitable paths when a route is not found
 - **TypeScript/TSX** — On-the-fly transpilation via esbuild
 - **HMR** — Hot module replacement without full page reload
 - **Simple API** — Programmatic and CLI usage

dist/dev-server.d.ts

@@ -33,6 +33,8 @@ export declare class DevServer {
     stop(): Promise<void>;
     private handleRequest;
     private redirect;
+    private listVisitablePaths;
+    private serve404;
     private servePublic;
     private serveHMRClient;
     private serveHtml;