feat: add basic-jsx and basic-template examples

- basic-jsx: Counter + Clock with defineComponent() + JSX
- basic-template: Counter + Clock with .vue SFC + <template>
- Both demonstrate HMR via vue-tui dev
- Fix vite-plugin: strip build.lib and external config for bundledDev,
  add node builtins resolveId to prevent browser-external shimming
- Remove old hmr-demo example (superseded by basic-template)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/cli/src/vite-plugin.ts

@@ -1,29 +1,48 @@
 import type { Plugin } from "vite";
+import { builtinModules } from "node:module";
 
 export interface VueTuiDevPluginOptions {
   entry?: string;
 }
 
-export function vueTuiDevPlugin(options?: VueTuiDevPluginOptions): Plugin {
-  return {
-    name: "vue-tui:dev",
-    config() {
-      return {
-        experimental: { bundledDev: true },
-        build: {
-          modulePreload: false,
-          ...(options?.entry ? { lib: { entry: options.entry } } : {}),
-        },
-        define: {
-          __VUE_TUI_DEV__: "true",
-        },
-        resolve: {
-          conditions: ["node"],
-        },
-        server: {
-          strictPort: true,
-        },
-      };
+const nodeBuiltins = new Set([...builtinModules, ...builtinModules.map((m) => `node:${m}`)]);
+
+export function vueTuiDevPlugin(_options?: VueTuiDevPluginOptions): Plugin[] {
+  return [
+    {
+      name: "vue-tui:node-builtins",
+      enforce: "pre",
+      resolveId(id) {
+        if (nodeBuiltins.has(id)) {
+          return { id: id.startsWith("node:") ? id : `node:${id}`, external: true };
+        }
+      },
     },
-  };
+    {
+      name: "vue-tui:dev",
+      config(config) {
+        // bundledDev uses index.html as entry, not build.lib
+        if (config.build?.lib) {
+          config.build.lib = undefined;
+        }
+        // bundledDev bundles everything — strip user's external config
+        if (config.build?.rollupOptions) {
+          config.build.rollupOptions.external = undefined;
+        }
+
+        return {
+          experimental: { bundledDev: true },
+          build: {
+            modulePreload: false,
+          },
+          define: {
+            __VUE_TUI_DEV__: "true",
+          },
+          server: {
+            strictPort: true,
+          },
+        };
+      },
+    },
+  ];
 }