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+# n-link Desktop — Vue 3 Frontend Port (Plan B)
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Replace Plan A's throwaway verification harness with the real n-link UI, ported from Vue 2 class components to Vue 3 `<script setup>`, running on Vite.
+
+**Architecture:** `n-link-core`'s 8 components and `desktop/src`'s store and views are rewritten as Vue 3 Composition API. The IPC contract stays frozen, so the Rust backend from Plan A is untouched except for one deliberate fix (making blocking USB commands async). `n-link-core` remains a source-only package consumed through a Vite alias — it has no build step of its own.
+
+**Tech Stack:** Vue 3.5.40, Vite 8.1.5, vue-router 4.6.4, element-plus 2.14.3, Tailwind 3.4.19, @tailwindcss/forms 0.5.11, sass 1.101.3, TypeScript, Tauri 2.11.5.
+
+**Source of truth:** `docs/superpowers/specs/2026-07-19-desktop-tauri2-vue3-port-design.md`
+**Predecessor:** `docs/superpowers/plans/2026-07-19-desktop-tauri2-backend.md` (complete, verified)
+
+## Global Constraints
+
+- Branch: `port/tauri2-vue3`. Do not commit to `main`. Remote `origin` is the fork `jjureta/n-link`; `upstream` is `lights0123/n-link`.
+- **The IPC contract is frozen.** 13 commands: `enumerate`, `open_device`, `close_device`, `update_device`, `list_dir`, `download_file`, `upload_file`, `upload_os`, `delete_file`, `delete_dir`, `create_nspire_dir`, `move_file`, `copy`. 3 events: `addDevice`, `removeDevice`, `progress`. Payloads are camelCase. Do not rename anything on either side.
+- Tauri 2 import paths: `@tauri-apps/api/core` for `invoke` (NOT the v1 `@tauri-apps/api/tauri`), `@tauri-apps/api/event` for `listen`, `@tauri-apps/plugin-dialog` for `open`, `@tauri-apps/plugin-shell` for `open`.
+- **Tailwind 3**, not 4. Decision recorded 2026-07-21: the existing theme is a JS config with 16 `@apply`/`theme()` uses inside scoped SCSS; Tailwind 4's CSS-first rewrite would layer a second migration on top of the Vue one.
+- `web/` is out of scope and knowingly broken. Do not modify any file under `web/`.
+- `nlink-cli/` and `vendor/` are supporting trees. Do not modify them.
+- Do not commit `target/`, `node_modules/`, or `dist/`.
+- No test framework. Verification is compilation plus manual checks against the connected CX II, per the spec.
+
+**Hardware reality (from Plan A, verified 2026-07-21):**
+- `enumerate` works — reads USB descriptors only, no libnspire transfer.
+- `open_device` works — returns full device info.
+- `list_dir` **hangs** against current CX II firmware. This is a known upstream libnspire limitation the user owns. It is NOT a defect in this work, and it means the file browser cannot be end-to-end verified. Build it correctly; verify what can be verified.
+
+---
+
+### Task 1: Make blocking USB commands async
+
+**Files:**
+- Modify: `desktop/src-tauri/src/commands.rs`
+
+**Interfaces:**
+- Consumes: the Plan A backend.
+- Produces: the same 13 commands, with the blocking ones no longer able to wedge the command queue. No signature change visible to the frontend.
+
+**Why this is first:** Plan A's verification found that `close_device` — which does no I/O at all — timed out because a hung `list_dir` blocked it. All 13 commands are synchronous, and Tauri runs sync commands on the main thread, so one stuck USB operation freezes every subsequent command. Since `list_dir` reliably hangs on this hardware, the UI is untestable until this is fixed.
+
+- [ ] **Step 1: Confirm the current state**
+
+Run: `cd /home/jjureta/Projects/n-link/desktop/src-tauri && grep -c "async fn" src/commands.rs`
+Expected: `0` — all commands are currently synchronous.
+
+- [ ] **Step 2: Move blocking commands onto the blocking pool**
+
+The commands that perform libnspire I/O must not run on the main thread. Wrap each body in `tauri::async_runtime::spawn_blocking`. Apply to exactly these 11: `open_device`, `update_device`, `list_dir`, `download_file`, `upload_file`, `upload_os`, `delete_file`, `delete_dir`, `create_nspire_dir`, `move_file`, `copy`.
+
+Leave `enumerate` and `close_device` synchronous — neither performs a libnspire transfer (`enumerate` reads USB descriptors; `close_device` only takes a write lock and sets an enum).
+
+The pattern, shown for `list_dir`:
+
+```rust
+#[tauri::command]
+pub async fn list_dir<R: Runtime>(
+  bus_number: u8,
+  address: u8,
+  path: String,
+  window: WebviewWindow<R>,
+) -> Result<Vec<FileInfo>, SerializedError> {
+  tauri::async_runtime::spawn_blocking(move || {
+    let dev = DevId {
+      bus_number,
+      address,
+    };
+    let handle = get_open_dev(&dev)?;
+    let handle = handle.lock().unwrap();
+    let dir = err_wrap(handle.list_dir(&path), dev, &window)?;
+
+    Ok(
+      dir
+        .iter()
+        .map(|file| FileInfo {
+          path: file.name().to_string_lossy().to_string(),
+          is_dir: file.entry_type() == EntryType::Directory,
+          date: file.date(),
+          size: file.size(),
+        })
+        .collect::<Vec<_>>(),
+    )
+  })
+  .await
+  .map_err(|e| SerializedError::from(e))?
+}
+```
+
+Three things change per command and they are easy to get wrong:
+
+1. `pub fn` becomes `pub async fn`.
+2. **The return type must become concrete.** `impl Serialize` cannot cross an async boundary here. Replace `Result<impl Serialize, SerializedError>` with the actual type: `Vec<FileInfo>` for `list_dir`, `libnspire::info::Info` for `open_device` and `update_device`, and `()` for all the mutating commands (`download_file`, `upload_file`, `upload_os`, `delete_file`, `delete_dir`, `create_nspire_dir`, `move_file`, `copy`).
+3. The closure must own its arguments — `move ||`, and `window` moves in.
+
+- [ ] **Step 3: Verify it compiles**
+
+Run: `cd /home/jjureta/Projects/n-link/desktop/src-tauri && cargo check`
+Expected: compiles clean.
+
+If you hit a lifetime error on `progress_sender(&window, ...)`, that is expected: it borrows `window`. Because `window` is moved into the closure, the borrow is now inside the closure and valid. If the compiler still objects, the closure is not taking ownership — check for a missing `move`.
+
+- [ ] **Step 4: Confirm the frontend contract did not change**
+
+Run: `grep -oE "pub async fn [a-z_]+|pub fn [a-z_]+" src/commands.rs | sed 's/pub async fn //;s/pub fn //' | sort | tr '\n' ' '`
+Expected exactly these 13 names: `close_device copy create_nspire_dir delete_dir delete_file download_file enumerate list_dir move_file open_device update_device upload_file upload_os`
+
+Command names and payloads are unchanged, so `invoke('list_dir', ...)` on the frontend behaves identically — it just no longer blocks its siblings.
+
+- [ ] **Step 5: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add desktop/src-tauri/src/commands.rs
+git commit -m "fix(desktop): run blocking USB commands on the blocking pool
+
+Plan A verification found close_device timing out despite doing no I/O:
+all commands were synchronous, Tauri runs sync commands on the main
+thread, so a hung list_dir blocked every subsequent command.
+
+The 11 libnspire-touching commands now spawn_blocking. enumerate and
+close_device stay sync — neither performs a transfer. Return types become
+concrete because impl Serialize cannot cross the async boundary. No
+change to command names or payloads."
+```
+
+---
+
+### Task 2: Frontend foundation — Tailwind 3, Vite aliases, shared types
+
+**Files:**
+- Modify: `desktop/package.json`, `desktop/vite.config.ts`
+- Create: `desktop/tailwind.config.js`, `desktop/postcss.config.js`
+- Modify: `n-link-core/package.json`, `n-link-core/tailwind.config.js`
+- Create: `n-link-core/components/devices.ts` (replace the Vue 2 module augmentation)
+- Delete: `n-link-core/shims-vue.d.ts`, `n-link-core/shims-tsx.d.ts`
+
+**Interfaces:**
+- Consumes: nothing from Task 1.
+- Produces:
+  - A Vite alias `n-link-core` → `../n-link-core`, so components import as `n-link-core/components/Foo.vue`.
+  - Working Tailwind 3 with the original theme.
+  - `n-link-core/components/devices.ts` exporting the shared types (`DevId`, `Version`, `Lcd`, `HardwareType`, `RunLevel`, `Battery`, `Info`, `FileInfo`, `Progress`, `PartialCmd`, `Cmd`, `Device`, `GenericDevices`) with the Vue 2 `declare module 'vue/types/vue'` block replaced by a Vue 3 `ComponentCustomProperties` augmentation.
+
+- [ ] **Step 1: Install frontend dependencies**
+
+```bash
+cd /home/jjureta/Projects/n-link
+npm install --workspace desktop --legacy-peer-deps \
+  vue-router@4.6.4 element-plus@2.14.3 filesize@10 feather-icons@4.29.2
+npm install --workspace desktop --legacy-peer-deps --save-dev \
+  tailwindcss@3.4.19 @tailwindcss/forms@0.5.11 postcss autoprefixer sass@1.101.3
+```
+
+`--legacy-peer-deps` is required while `n-link-core` still declares Vue 2 peers; Step 6 fixes that.
+
+- [ ] **Step 2: Configure Vite**
+
+Replace `desktop/vite.config.ts`. Keep the existing Tauri-specific settings (fixed port 1420, `strictPort`, the HMR block, ignoring `src-tauri`) — those come from the scaffold and Tauri depends on them. Add the alias and SCSS support:
+
+```ts
+import { defineConfig } from "vite";
+import vue from "@vitejs/plugin-vue";
+import { fileURLToPath, URL } from "node:url";
+
+const host = process.env.TAURI_DEV_HOST;
+
+export default defineConfig(async () => ({
+  plugins: [vue()],
+  resolve: {
+    alias: {
+      "n-link-core": fileURLToPath(new URL("../n-link-core", import.meta.url)),
+      "@": fileURLToPath(new URL("./src", import.meta.url)),
+    },
+  },
+  // Vite ignores watching src-tauri; Tauri expects a fixed port.
+  clearScreen: false,
+  server: {
+    port: 1420,
+    strictPort: true,
+    host: host || false,
+    hmr: host ? { protocol: "ws", host, port: 1421 } : undefined,
+    watch: { ignored: ["**/src-tauri/**"] },
+  },
+}));
+```
+
+Do not change the port — `tauri.conf.json`'s `devUrl` is `http://localhost:1420` and they must agree.
+
+- [ ] **Step 3: Add Tailwind 3 config to desktop**
+
+Create `desktop/tailwind.config.js`:
+
+```js
+module.exports = {
+  content: [
+    './index.html',
+    './src/**/*.{vue,js,ts}',
+    '../n-link-core/components/**/*.{vue,js,ts}',
+  ],
+  presets: [require('../n-link-core/tailwind.config.js')],
+};
+```
+
+Create `desktop/postcss.config.js`:
+
+```js
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
+```
+
+- [ ] **Step 4: Migrate the core Tailwind config from 1.x to 3.x**
+
+Replace `n-link-core/tailwind.config.js`. The theme is preserved exactly; only the 1.x-era plumbing changes:
+
+```js
+module.exports = {
+  theme: {
+    fontFamily: {
+      sans: [
+        'Cantarell',
+        'Roboto',
+        'system-ui',
+        '-apple-system',
+        'BlinkMacSystemFont',
+        '"Segoe UI"',
+        '"Helvetica Neue"',
+        'Arial',
+        '"Noto Sans"',
+        'sans-serif',
+        '"Apple Color Emoji"',
+        '"Segoe UI Emoji"',
+        '"Segoe UI Symbol"',
+        '"Noto Color Emoji"',
+      ],
+    },
+    extend: {
+      inset: {
+        '1/8': '0.125em',
+      },
+      boxShadow: {
+        even: '0 2px 12px 0 #0000001a',
+        error: '0 0 0 3px #F56C6CA0',
+      },
+      padding: {
+        '2.5': '0.625em',
+        '3/2': '0.375em',
+      },
+      colors: {
+        ui: {
+          background: 'var(--color-ui-background)',
+          emph: 'var(--color-ui-emph)',
+          sidebar: 'var(--color-ui-sidebar)',
+          text: 'var(--color-ui-text)',
+          'text-inv': 'var(--color-ui-text-inv)',
+          primary: 'var(--color-ui-primary)',
+          border: 'var(--color-ui-border)',
+          blockquote: 'var(--color-ui-blockquote)',
+        },
+      },
+      height: {
+        min: 'min-content',
+      },
+    },
+  },
+  plugins: [require('@tailwindcss/forms')],
+};
+```
+
+Four deliberate changes:
+- `future: {...}` removed — those flags became default behaviour in Tailwind 2.
+- `variants: {}` removed — Tailwind 3 generates all variants on demand.
+- `purge: {...}` removed — replaced by `content` in the consuming config (Step 3). The old block was `web`-specific and is dead here.
+- `@tailwindcss/custom-forms` → `@tailwindcss/forms`. **This changes class names**: `.form-checkbox` becomes a bare `<input type="checkbox">` styled by the plugin's base styles. Task 9 handles the one usage in `Home.vue`.
+
+- [ ] **Step 5: Verify the gray-400 colour used by `theme()` still resolves**
+
+`FileBrowser.vue` and `Home.vue` use `theme('colors.gray.400')` in SCSS. Tailwind 3 renamed the default palette's `gray` to `gray` (unchanged) but the shades differ slightly from 1.x. This is cosmetic and acceptable; do not add a compatibility shim.
+
+- [ ] **Step 6: Update n-link-core's package manifest for Vue 3**
+
+Replace `n-link-core/package.json`:
+
+```json
+{
+  "name": "n-link-core",
+  "version": "0.0.0",
+  "peerDependencies": {
+    "element-plus": "^2.14.3",
+    "vue": "^3.5.40"
+  },
+  "devDependencies": {
+    "tailwindcss": "^3.4.19",
+    "@tailwindcss/forms": "^0.5.11"
+  }
+}
+```
+
+`element-ui`, `vue-class-component`, and `vue-property-decorator` are all removed — nothing will import them after this plan.
+
+- [ ] **Step 7: Rewrite the shared types module**
+
+Replace `n-link-core/components/devices.ts`. Keep every type exactly as-is (the backend serializes to these shapes), and replace only the trailing Vue 2 augmentation:
+
+```ts
+export type DevId = { address: number; busNumber: number };
+
+export type Version = { major: number; minor: number; patch: number; build: number };
+export type Lcd = { width: number; height: number; bpp: number; sample_mode: number };
+export type HardwareType =
+    | "Cas"
+    | "NonCas"
+    | "CasCx"
+    | "NonCasCx"
+    | { Unknown: number };
+// The current state of the calculator.
+export type RunLevel =
+    | "Recovery"
+    | "Os"
+    | { Unknown: number };
+export type Battery =
+    | "Powered"
+    | "Low"
+    | "Ok"
+    | { Unknown: number };
+export type Info = { free_storage: number; total_storage: number; free_ram: number; total_ram: number; version: Version; boot1_version: Version; boot2_version: Version; hw_type: HardwareType; clock_speed: number; lcd: Lcd; os_extension: string; file_extension: string; name: string; id: string; run_level: RunLevel; battery: Battery; is_charging: boolean };
+
+export type FileInfo = { path: string; isDir: boolean; date: number; size: number };
+
+export type Progress = { remaining: number; total: number };
+
+export type PartialCmd = { action: 'download'; path: [string, number]; dest?: string }
+    | { action: 'upload'; path: string } & ({ src: string } | { file: File })
+    | { action: 'uploadOs' } & ({ src: string } | { file: File })
+    | { action: 'deleteFile'; path: string }
+    | { action: 'deleteDir'; path: string }
+    | { action: 'createDir'; path: string }
+    | { action: 'move'; src: string; dest: string }
+    | { action: 'copy'; src: string; dest: string };
+
+export type Cmd = { id: number } & PartialCmd;
+
+export type Device = { name: string; isCxIi: boolean; needsDrivers: boolean; info?: Info; progress?: Progress; queue?: Cmd[]; running?: boolean };
+
+export interface GenericDevices {
+    devices: Record<string, Device>;
+    enumerating: boolean;
+    hasEnumerated: boolean;
+    errorHandler?: (e: DOMException) => void;
+
+    enumerate(): Promise<void>;
+    open(dev: string): Promise<void>;
+    close(dev: string): Promise<void>;
+    update(dev: string): Promise<void>;
+    listDir(dev: DevId | string, path: string): Promise<FileInfo[]>;
+    uploadFiles(dev: DevId | string, path: string, files: File[]): Promise<void>;
+    promptUploadFiles(dev: DevId | string, path: string): Promise<void>;
+    uploadOs(dev: DevId | string, filter: string): Promise<void>;
+    uploadOsFile(dev: DevId | string, file: File): Promise<void>;
+    downloadFiles(dev: DevId | string, files: [string, number][]): Promise<void>;
+    delete(dev: DevId | string, files: FileInfo[]): Promise<void>;
+    createDir(dev: DevId | string, path: string): Promise<void>;
+    copy(dev: DevId | string, src: string, dest: string): Promise<void>;
+    move(dev: DevId | string, src: string, dest: string): Promise<void>;
+}
+
+import type { InjectionKey } from 'vue';
+
+/**
+ * n-link-core is consumed by more than one host (the Tauri desktop app and
+ * the WebUSB web app), each of which supplies its own GenericDevices
+ * implementation. Core components must therefore never import a concrete
+ * store — they inject this key. The host provides it at startup.
+ */
+export const DEVICES_KEY = Symbol('devices') as InjectionKey<GenericDevices>;
+
+declare module 'vue' {
+    interface ComponentCustomProperties {
+        $devices: GenericDevices;
+    }
+}
+
+export {};
+```
+
+Two separate mechanisms, and both are needed:
+
+- **`ComponentCustomProperties`** replaces the Vue 2 `declare module 'vue/types/vue' { interface Vue { ... } }`. It is what keeps `$devices` type-checked *in templates*, which is where the vast majority of usages are.
+- **`DEVICES_KEY`** is for `<script setup>` blocks, which have no `this` and therefore no access to `globalProperties`. A core component whose *script* needs the store injects it:
+  ```ts
+  import { inject } from 'vue';
+  import { DEVICES_KEY, type GenericDevices } from './devices';
+  const devices = inject(DEVICES_KEY) as GenericDevices;
+  ```
+
+Do **not** make a core component `import devices from '.../desktop/src/components/devices'`. That would hard-wire the shared package to the desktop implementation and permanently break the web consumer.
+
+- [ ] **Step 8: Delete the Vue 2 shims**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git rm --quiet n-link-core/shims-vue.d.ts n-link-core/shims-tsx.d.ts
+```
+
+`shims-vue.d.ts` declared the `vue-async-computed` interfaces, which Task 7 removes entirely. `shims-tsx.d.ts` declared the Vue 2 TSX global namespace, unused.
+
+- [ ] **Step 9: Verify the build still runs**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds. The harness `App.vue` from Plan A is still in place and still compiles; components arrive in later tasks.
+
+- [ ] **Step 10: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add desktop/package.json desktop/vite.config.ts desktop/tailwind.config.js \
+        desktop/postcss.config.js n-link-core/package.json \
+        n-link-core/tailwind.config.js n-link-core/components/devices.ts \
+        n-link-core/shims-vue.d.ts n-link-core/shims-tsx.d.ts package-lock.json
+git commit -m "feat(frontend): Vue 3 foundation — Tailwind 3, Vite alias, shared types
+
+Migrates n-link-core's Tailwind config from 1.x to 3.x (drops future/
+variants/purge, swaps custom-forms for @tailwindcss/forms) and replaces
+the Vue 2 'vue/types/vue' augmentation with Vue 3
+ComponentCustomProperties. Deletes the Vue 2 shims."
+```
+
+---
+
+### Task 3: Port FileIcon.vue — asset resolution
+
+**Files:**
+- Modify: `n-link-core/components/FileIcon.vue`
+
+**Interfaces:**
+- Consumes: nothing.
+- Produces: `<file-icon :path="string" :dir="boolean" :width="number" />` — same props as before. Used by `FileView` (Task 4).
+
+**Why this is its own task:** it contains 30 `require()` calls, which Vite cannot execute. This is the single largest mechanical change in the plan and it either works completely or fails completely.
+
+- [ ] **Step 1: Rewrite the component**
+
+Replace `n-link-core/components/FileIcon.vue`. The extension-to-icon mapping is preserved exactly; only the lookup mechanism changes.
+
+```vue
+<template>
+  <img :width="width" :src="icon" alt=""/>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue';
+
+const props = withDefaults(defineProps<{
+  path: string;
+  dir?: boolean;
+  width?: number;
+}>(), {
+  dir: false,
+  width: 64,
+});
+
+// Vite replacement for webpack's require(). Eagerly resolves every SVG in
+// assets/ to its emitted URL at build time, keyed by module path.
+const assets = import.meta.glob<string>('../assets/**/*.svg', {
+  eager: true,
+  query: '?url',
+  import: 'default',
+});
+
+function asset(name: string): string {
+  const key = `../assets/${name}`;
+  const found = assets[key];
+  if (!found) throw new Error(`missing icon asset: ${key}`);
+  return found;
+}
+
+const FOLDER_ICONS: Record<string, string> = {
+  games: 'games',
+  images: 'images',
+  photos: 'images',
+  music: 'music',
+  sound: 'music',
+  sounds: 'music',
+  script: 'scripts',
+  scripts: 'scripts',
+  program: 'scripts',
+  programs: 'scripts',
+  template: 'templates',
+  templates: 'templates',
+  video: 'video',
+  videos: 'video',
+};
+
+const EXT_ICONS: Record<string, string> = {
+  bin: 'binary',
+  ical: 'calendar', ics: 'calendar', ifb: 'calendar', icalendar: 'calendar',
+  cfg: 'cfg',
+  vcf: 'contact',
+  csv: 'csv', log: 'csv', logs: 'csv',
+  sql: 'db', db: 'db', sqlite: 'db',
+  epub: 'epub',
+  eot: 'font', otf: 'font', ttf: 'font', woff: 'font', woff2: 'font',
+  png: 'image', bmp: 'image', jpg: 'image', jpeg: 'image', jpe: 'image',
+  jif: 'image', jfif: 'image', jfi: 'image', jp2: 'image', j2k: 'image',
+  jpf: 'image', jpx: 'image', jpm: 'image', mj2: 'image', gif: 'image',
+  tiff: 'image', tif: 'image', ppm: 'image', pgm: 'image', pbm: 'image',
+  pnm: 'image', webp: 'image', heif: 'image', heifs: 'image', heic: 'image',
+  heics: 'image', avci: 'image', avcs: 'image', avif: 'image', avifs: 'image',
+  ico: 'image', icon: 'image', icns: 'image', pcx: 'image', pgf: 'image',
+  tga: 'image', psd: 'image', xcf: 'image',
+  js: 'js', mjs: 'js',
+  json: 'json', json5: 'json',
+  lua: 'lua',
+  pdf: 'pdf',
+  py: 'python',
+  rom: 'rom', '89u': 'rom', smc: 'rom', sfc: 'rom', srm: 'rom', img: 'rom',
+  svg: 'svg', svgz: 'svg',
+  txt: 'txt',
+  mp4: 'video',
+  xml: 'xml',
+  zip: 'zip', tar: 'zip', gz: 'zip',
+};
+
+const name = computed(() => props.path.split('/').pop() as string);
+
+const ext = computed(() => {
+  const parts = name.value.split('.');
+  if (parts[parts.length - 1] === 'tns') parts.pop();
+  if (parts.length < 2) return '';
+  return parts.pop() as string;
+});
+
+const icon = computed(() => {
+  if (props.dir) {
+    const key = FOLDER_ICONS[name.value.trim().toLowerCase()] ?? 'folder';
+    return asset(`folders/${key}.svg`);
+  }
+  if (name.value === 'ndless_resources.tns') return asset('files/resources.svg');
+  if (name.value.startsWith('ndless_installer')) return asset('files/installer.svg');
+  return asset(`files/${EXT_ICONS[ext.value.toLowerCase()] ?? 'unknown'}.svg`);
+});
+</script>
+```
+
+Note the original had `alt="name"` — a literal string, not a binding, so it rendered the word "name" for every icon. These are decorative icons beside a filename label, so `alt=""` is correct. This is a deliberate fix, not an oversight.
+
+- [ ] **Step 2: Verify every mapped asset exists**
+
+The lookup now throws on a missing file rather than failing silently at build time. Confirm the mapping matches what is on disk:
+
+```bash
+cd /home/jjureta/Projects/n-link/n-link-core/assets
+ls files/ folders/
+```
+
+Expected in `folders/`: `folder.svg games.svg images.svg music.svg scripts.svg templates.svg video.svg`
+Expected in `files/`: `binary.svg calendar.svg cfg.svg contact.svg csv.svg db.svg epub.svg exec.svg font.svg image.svg installer.svg js.svg json.svg lua.svg pdf.svg python.svg resources.svg rom.svg svg.svg txt.svg unknown.svg video.svg xml.svg zip.svg`
+
+`exec.svg` is present but unreferenced by the original mapping. Leave it unreferenced — do not invent a mapping for it.
+
+- [ ] **Step 3: Verify it compiles**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds. `FileIcon` is not yet imported by anything, so this only proves it parses and type-checks.
+
+- [ ] **Step 4: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add n-link-core/components/FileIcon.vue
+git commit -m "feat(core): port FileIcon to Vue 3, replace require() with import.meta.glob
+
+30 webpack require() calls replaced by a single eager import.meta.glob.
+The extension-to-icon mapping is preserved exactly, restructured from a
+switch chain into lookup tables. Fixes alt=\"name\" rendering the literal
+string 'name'."
+```
+
+---
+
+### Task 4: Port CalcInfo.vue and FileView.vue
+
+**Files:**
+- Modify: `n-link-core/components/CalcInfo.vue`, `n-link-core/components/FileView.vue`
+
+**Interfaces:**
+- Consumes: `FileIcon` (Task 3), types from `devices.ts` (Task 2).
+- Produces:
+  - `<calc-info :info="Info" :dev="string" :native-upload="boolean" />`
+  - `<file-view :files="FileInfo[]" :show-hidden="boolean" @nav="path => void" @select="FileInfo[] => void" />`
+
+- [ ] **Step 1: Read the current sources**
+
+Both files are Vue 2 class components. Read them in full before editing:
+`n-link-core/components/CalcInfo.vue` and `n-link-core/components/FileView.vue`.
+
+- [ ] **Step 2: Port CalcInfo.vue**
+
+Convert to `<script setup lang="ts">`. The template is unchanged except for the `$refs` usage. Specifics:
+
+- `@Prop({type: Object, required: true}) info!: Info` → `defineProps<{ info: Info; dev: string; nativeUpload?: boolean }>()` with `withDefaults` for `nativeUpload: false`.
+- `refreshing = false` → `const refreshing = ref(false)`.
+- `formatSize`, `formatVersion`, `refresh`, `uploadNative` become plain functions.
+- `$refs.upload` → `const upload = ref<HTMLInputElement | null>(null)` plus `ref="upload"` in the template; call `upload.value?.click()`.
+- `import fileSize from "filesize"` — filesize 10 changed its export shape. Use `import { filesize } from 'filesize'` and call `filesize(size, { round: 1 })`.
+- `$devices` in the **template** still resolves via `globalProperties` (registered in Task 9) — leave template usages alone. The `refresh()` and `uploadNative()` functions need the store in **script**, where there is no `this`: inject it with `const devices = inject(DEVICES_KEY) as GenericDevices` (Task 2). Do not import the desktop store directly — that would break the web consumer.
+
+- [ ] **Step 3: Port FileView.vue**
+
+Convert to `<script setup lang="ts">`. Specifics:
+
+- Props via `defineProps` + `withDefaults`: `files: FileInfo[]` default `[]`, `showHidden?: boolean` default `false`.
+- `defineEmits<{ nav: [path: string]; select: [files: FileInfo[]] }>()`.
+- `selected: number[] = []` → `const selected = ref<number[]>([])`.
+- `@Watch('selected', {deep: true, immediate: true})` → `watch(selected, ..., { deep: true, immediate: true })` emitting `select`.
+- `@Watch('files')` → `watch(() => props.files, () => { selected.value = [] })`.
+- `filteredFiles` and `formatPath` become `computed` / a function.
+- The template's mouse modifiers (`@mousedown.exact`, `.ctrl.stop`, `.shift.stop`, `@dblclick`) are all still valid in Vue 3 — leave them.
+
+- [ ] **Step 4: Verify**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds.
+
+- [ ] **Step 5: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add n-link-core/components/CalcInfo.vue n-link-core/components/FileView.vue
+git commit -m "feat(core): port CalcInfo and FileView to Vue 3 script setup"
+```
+
+---
+
+### Task 5: Port DeviceSelect.vue and DeviceQueue.vue — element-plus
+
+**Files:**
+- Modify: `n-link-core/components/DeviceSelect.vue`, `n-link-core/components/DeviceQueue.vue`
+
+**Interfaces:**
+- Consumes: types from `devices.ts`.
+- Produces:
+  - `<device-select v-model:selected="string | null" :scan-hint="boolean" />`
+  - `<device-queue :device="Device" />`
+
+- [ ] **Step 1: Port DeviceSelect.vue**
+
+Four distinct migrations in this one file:
+
+1. **`@PropSync('selected')`** has no Vue 3 equivalent. Replace with `const selectedCalculator = defineModel<string | null>('selected')`. At the call site this changes `:selected.sync="x"` to `v-model:selected="x"` (Task 9 updates `Home.vue`).
+2. **element-ui → element-plus.** Replace
+   `import ElPopover from 'element-ui/packages/popover/src/main.vue'` and
+   `import 'element-ui/lib/theme-chalk/popover.css'`
+   with
+   `import { ElPopover } from 'element-plus'` and
+   `import 'element-plus/es/components/popover/style/css'`.
+3. **Popover visibility binding.** element-ui used `v-model="active"`; element-plus uses `v-model:visible="active"`.
+4. **Slot syntax.** `<div slot="reference">` is Vue 2. Replace with `<template #reference><div>…</div></template>`.
+
+Also replace the webpack tilde image:
+`<img src="~feather-icons/dist/icons/refresh-cw.svg" class="w-5"/>`
+becomes an ESM import — `import refreshCw from 'feather-icons/dist/icons/refresh-cw.svg'` — bound as `<img :src="refreshCw" class="w-5"/>`.
+
+The `active` ref, `select()`, and the `calc` / `anyCalcs` computeds convert mechanically. Keep both `<style>` blocks (scoped and unscoped `.dev-select-pop`) as they are.
+
+- [ ] **Step 2: Port DeviceQueue.vue**
+
+Same element-plus popover migration and the same tilde-image fix (`x-circle.svg`). `@Prop({type: Object}) device` → `defineProps<{ device: Device }>()`.
+
+- [ ] **Step 3: Verify**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds.
+
+- [ ] **Step 4: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add n-link-core/components/DeviceSelect.vue n-link-core/components/DeviceQueue.vue
+git commit -m "feat(core): port DeviceSelect and DeviceQueue to Vue 3 + element-plus
+
+@PropSync -> defineModel, element-ui popover -> element-plus
+(v-model:visible), slot=\"reference\" -> #reference, and webpack tilde
+image paths -> ESM imports."
+```
+
+---
+
+### Task 6: Port FileData.vue
+
+**Files:**
+- Modify: `n-link-core/components/FileData.vue`
+
+**Interfaces:**
+- Consumes: types from `devices.ts`; element-plus popover pattern from Task 5.
+- Produces: `<file-data :files="FileInfo[]" :show-hidden="boolean" :dev="string" :path="string" :native-upload="boolean" />`
+
+This is the most involved component: three `el-popover` instances (file info, delete confirmation, create-directory), each needing the Task 5 treatment.
+
+- [ ] **Step 1: Read the source in full**
+
+`n-link-core/components/FileData.vue`, 163 lines.
+
+- [ ] **Step 2: Port it**
+
+Every change this file needs, enumerated — do not infer them from other tasks:
+
+**Imports.** Replace
+```ts
+import { Component, Prop, Vue } from 'vue-property-decorator';
+import ElPopover from 'element-ui/packages/popover/src/main.vue';
+import 'element-ui/lib/theme-chalk/popover.css';
+```
+with
+```ts
+import { computed, inject, ref } from 'vue';
+import { ElPopover } from 'element-plus';
+import 'element-plus/es/components/popover/style/css';
+import { DEVICES_KEY, type GenericDevices, type FileInfo } from './devices';
+
+const devices = inject(DEVICES_KEY) as GenericDevices;
+```
+
+**Props.** The class had `@Prop` declarations for `files`, `showHidden`, `dev`, `path`, and `nativeUpload`. Replace with:
+```ts
+const props = withDefaults(defineProps<{
+  files: FileInfo[];
+  dev: string;
+  path: string;
+  showHidden?: boolean;
+  nativeUpload?: boolean;
+}>(), {
+  showHidden: false,
+  nativeUpload: false,
+});
+```
+
+**State.** `deletePopup`, `createDirPopup`, and `newName` become `ref(false)`, `ref(false)`, and `ref('')`.
+
+**Computeds.** Every `get x()` on the class becomes `const x = computed(() => ...)`. Inside the script, referencing a prop needs `props.`, and referencing a ref needs `.value` — the class form had neither.
+
+**Template — three popovers.** Each `<el-popover>` needs two changes:
+1. `v-model="deletePopup"` → `v-model:visible="deletePopup"` (element-plus renamed the binding). Same for `createDirPopup`. The first popover has no `v-model` — leave it.
+2. Any `<x slot="reference">` → `<template #reference><x>…</x></template>`.
+
+`@show="newName = ''"` on the create-directory popover is still valid in element-plus — keep it.
+
+**`$refs`.** If the file uses `this.$refs.<name>`, replace with a matching `ref<HTMLElement | null>(null)` and access `.value`.
+
+Template `$devices` usages stay as they are — `globalProperties` resolves them.
+
+- [ ] **Step 3: Verify**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds.
+
+- [ ] **Step 4: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add n-link-core/components/FileData.vue
+git commit -m "feat(core): port FileData to Vue 3 + element-plus"
+```
+
+---
+
+### Task 7: Port FileBrowser.vue — replace vue-async-computed
+
+**Files:**
+- Modify: `n-link-core/components/FileBrowser.vue`
+
+**Interfaces:**
+- Consumes: `FileView` (Task 4), `FileData` (Task 6), `DeviceQueue` (Task 5).
+- Produces: `<file-browser :dev="string" :show-hidden="boolean" :native-upload="boolean" />`
+
+**Why this is its own task:** it is the only consumer of `vue-async-computed`, a Vue 2–only library with no Vue 3 successor. It provides both the async directory listing and the spinner state (`$asyncComputed.files.updating`).
+
+- [ ] **Step 1: Replace the async computed with an explicit watcher**
+
+Do not add a dependency for this. One call site does not justify `@vueuse/core`. Hand-roll it:
+
+```ts
+import { inject, ref, watch } from 'vue';
+import { DEVICES_KEY, type GenericDevices, type FileInfo } from './devices';
+
+const devices = inject(DEVICES_KEY) as GenericDevices;
+
+const files = ref<FileInfo[] | null>(null);
+const loading = ref(false);
+const updateIndex = ref(0);
+
+async function loadFiles() {
+  loading.value = true;
+  try {
+    const contents = await devices.listDir(props.dev, path.value);
+    files.value = contents.map((file) => ({
+      ...file,
+      path: `${path.value}/${file.path}`,
+    }));
+  } catch (e) {
+    console.error(e);
+    files.value = null;
+  } finally {
+    loading.value = false;
+  }
+}
+
+watch([() => props.dev, path, updateIndex], loadFiles, { immediate: true });
+```
+
+This preserves the original's three behaviours: it re-runs when `path` changes, it re-runs when `goToIndex` bumps `updateIndex` (that counter exists so clicking the *current* breadcrumb forces a refresh), and it exposes a `loading` flag for the spinner.
+
+One deliberate behavioural difference: the original let the error propagate out of the async computed, which left the previous listing on screen. Setting `files.value = null` instead shows the empty state. Given `list_dir` currently hangs rather than erroring on this hardware, neither path is reachable today — the explicit null is the clearer contract.
+
+- [ ] **Step 2: Convert the rest of the component**
+
+`path`, `selected` become refs; `parts` becomes a computed; `@Watch('path')` clearing `selected` becomes a `watch`; `goToIndex` stays a function. Replace the tilde image (`chevron-right.svg`) with an ESM import as in Task 5.
+
+- [ ] **Step 3: Remove the dependency**
+
+Confirm nothing else references it:
+
+```bash
+cd /home/jjureta/Projects/n-link
+grep -rn "asyncComputed\|vue-async-computed" n-link-core desktop/src desktop/package.json || echo "clean"
+```
+
+Expected: `clean`. If `desktop/package.json` still lists `vue-async-computed`, remove it.
+
+- [ ] **Step 4: Verify**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds.
+
+- [ ] **Step 5: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add n-link-core/components/FileBrowser.vue desktop/package.json
+git commit -m "feat(core): port FileBrowser to Vue 3, drop vue-async-computed
+
+Replaces the Vue 2-only async computed with an explicit watch + refs,
+preserving the path/updateIndex re-fetch triggers and the loading flag."
+```
+
+---
+
+### Task 8: Port the device store
+
+**Files:**
+- Modify: `desktop/src/components/devices.ts`
+
+**Interfaces:**
+- Consumes: types and `GenericDevices` from `n-link-core/components/devices.ts`.
+- Produces: a default-exported reactive store implementing `GenericDevices`, registered globally in Task 9.
+
+**Why this carries the most risk:** it holds ~10 `$set`/`$delete` calls. Vue 3's proxy reactivity makes them unnecessary, so they are deleted rather than translated — and a mistake here produces silent non-reactivity rather than an error.
+
+- [ ] **Step 1: Convert the class to a reactive object**
+
+The Vue 2 form was `@Component class Devices extends Vue` instantiated with `new Devices()`. Vue 3 has no such pattern. Replace with `reactive()`:
+
+```ts
+import { reactive } from 'vue';
+import { invoke } from '@tauri-apps/api/core';
+import { listen } from '@tauri-apps/api/event';
+import { open as openDialog } from '@tauri-apps/plugin-dialog';
+import type { GenericDevices, Device, DevId, FileInfo, PartialCmd, Cmd } from 'n-link-core/components/devices';
+
+const state = reactive<GenericDevices>({
+  devices: {},
+  enumerating: false,
+  hasEnumerated: false,
+  // ...methods assigned below
+} as GenericDevices);
+```
+
+Note the import path changes: `@tauri-apps/api/tauri` → `@tauri-apps/api/core`, and `@tauri-apps/api/dialog` → `@tauri-apps/plugin-dialog`.
+
+- [ ] **Step 2: Delete every `$set` / `$delete`**
+
+Each has a direct plain-JS equivalent:
+
+| Vue 2 | Vue 3 |
+|---|---|
+| `this.$set(this.devices, str, value)` | `state.devices[str] = value` |
+| `this.$delete(this.devices, str)` | `delete state.devices[str]` |
+| `this.$set(device, 'progress', payload)` | `device.progress = payload` |
+| `this.$delete(device, 'progress')` | `delete device.progress` |
+| `this.$set(device, 'queue', [])` | `device.queue = []` |
+| `this.$set(device, 'running', true)` | `device.running = true` |
+
+Verify none remain:
+
+```bash
+grep -n '\$set\|\$delete' desktop/src/components/devices.ts || echo "clean"
+```
+Expected: `clean`.
+
+- [ ] **Step 3: Preserve the queue semantics exactly**
+
+`runQueue` is the subtlest logic in the file. Keep these behaviours:
+- the early return when `!device?.queue || device.running`
+- the `while (true)` loop that exits when `this.devices[dev]` disappears (device removed mid-queue)
+- `device.running = false` and return when the queue empties
+- `console.error` on a failed command, then continue to the next
+- deleting `progress` and shifting the queue after each command
+- the trailing `await this.update(dev)`
+
+Replace `this.` with `state.` throughout. `queueId` stays a module-level counter.
+
+- [ ] **Step 4: Keep the dialog calls current**
+
+`openDialog({ filters: [...], multiple: true })` and `openDialog({ directory: true })` keep the same shape in the v2 plugin. Their return types are `string | string[] | null`; the original's `as string | null` casts still apply. Preserve the null checks — `promptUploadFiles` iterates the result, so guard against `null` before looping.
+
+- [ ] **Step 5: Verify**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds.
+
+- [ ] **Step 6: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add desktop/src/components/devices.ts
+git commit -m "feat(desktop): port device store to Vue 3 reactive
+
+Replaces the Vue 2 component-as-store (new Devices() extending Vue) with
+reactive(). All ~10 \$set/\$delete calls are deleted — Vue 3 proxy
+reactivity tracks plain assignment and delete. Tauri 2 import paths."
+```
+
+---
+
+### Task 9: Port the app shell and delete the harness
+
+**Files:**
+- Modify: `desktop/src/App.vue`, `desktop/src/main.ts`
+- Create: `desktop/src/views/Home.vue`, `desktop/src/views/About.vue`, `desktop/src/router/index.ts`
+- Delete: `desktop/src/assets/vue.svg`, `desktop/public/vite.svg`, `desktop/public/tauri.svg`
+
+**Interfaces:**
+- Consumes: every component from Tasks 3–7, the store from Task 8.
+- Produces: the running application. This task removes Plan A's verification harness.
+
+- [ ] **Step 1: Port the router to vue-router 4**
+
+Create `desktop/src/router/index.ts`:
+
+```ts
+import { createRouter, createWebHashHistory } from 'vue-router';
+import Home from '../views/Home.vue';
+
+export default createRouter({
+  history: createWebHashHistory(),
+  routes: [
+    { path: '/', name: 'Home', component: Home },
+    { path: '/about', name: 'About', component: () => import('../views/About.vue') },
+  ],
+});
+```
+
+`new VueRouter({ mode: 'history' })` becomes `createRouter({ history: ... })`, and `Vue.use(VueRouter)` is gone. **Use hash history, not web history**: the app is served from a custom protocol in production, where path-based history has no server to resolve deep links against. The original's `process.env.BASE_URL` is a Vue CLI variable that does not exist under Vite.
+
+- [ ] **Step 2: Port Home.vue**
+
+Copy the template from `git show 0472908:desktop/src/views/Home.vue` and convert the script. Specifics:
+
+- `:selected.sync="selectedCalculator"` → `v-model:selected="selectedCalculator"` (matches Task 5's `defineModel`).
+- The three `@Watch` decorators become `watch` calls. `@Watch('$devices.hasEnumerated')` and `@Watch('$devices.devices')` watch the imported store directly: `watch(() => devices.hasEnumerated, ...)` and `watch(() => devices.devices, ..., { deep: true })`.
+- `import { open } from '@tauri-apps/api/shell'` → `import { open } from '@tauri-apps/plugin-shell'`.
+- `class="form-checkbox h-5 w-5 text-blue-600 cursor-pointer"` — `@tailwindcss/forms` styles bare inputs rather than providing `.form-checkbox`. Drop `form-checkbox` and keep the rest.
+- `navigator.platform` is deprecated but functional; keep it. The `isLinux` branch shows udev instructions and is correct on this machine.
+- Keep the `sleep(1000)` race-avoidance in `onDeviceChange` — it exists so a device arriving slightly after enumeration still gets auto-selected.
+
+- [ ] **Step 3: Port App.vue**
+
+```vue
+<template>
+  <div id="app" class="h-screen">
+    <router-view/>
+  </div>
+</template>
+
+<style lang="scss">
+@import 'n-link-core/assets/tailwind.css';
+
+#app {
+  user-select: none;
+  font-family: Avenir, Helvetica, Arial, sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  color: #2c3e50;
+}
+</style>
+```
+
+The webpack tilde in `@import '~n-link-core/assets/tailwind.css'` is dropped — the Vite alias from Task 2 resolves the bare specifier.
+
+This replaces Plan A's harness. That is the intended end of the harness's life.
+
+- [ ] **Step 4: Port main.ts and register the store globally**
+
+```ts
+import { createApp } from 'vue';
+import App from './App.vue';
+import router from './router';
+import devices from './components/devices';
+import { DEVICES_KEY } from 'n-link-core/components/devices';
+import 'n-link-core/assets/tailwind.css';
+
+const app = createApp(App);
+app.use(router);
+// Two registrations, both required:
+//   globalProperties -> templates across n-link-core reference $devices
+//   provide          -> <script setup> blocks have no `this`, so they inject
+app.config.globalProperties.$devices = devices;
+app.provide(DEVICES_KEY, devices);
+app.mount('#app');
+```
+
+Both lines are load-bearing. Omitting `provide` makes every core component that injects the store receive `undefined` and fail at runtime with a confusing null-property error rather than a build error. Omitting `globalProperties` makes every `$devices` reference in a template silently render nothing.
+
+`new Vue({ render: h => h(App) }).$mount('#app')` becomes `createApp(App).mount('#app')`. `Vue.use(AsyncComputed)` is gone (Task 7). `Vue.config.productionTip` no longer exists in Vue 3.
+
+`app.config.globalProperties.$devices` is what makes `$devices` resolve in templates; the `ComponentCustomProperties` augmentation from Task 2 is what makes TypeScript accept it.
+
+- [ ] **Step 5: Port About.vue and remove scaffold assets**
+
+`About.vue` is 5 lines — copy it from `git show 0472908:desktop/src/views/About.vue`, converting if it has any script block.
+
+```bash
+cd /home/jjureta/Projects/n-link/desktop
+git rm --quiet src/assets/vue.svg public/vite.svg public/tauri.svg
+```
+
+Check `index.html` for a `<link rel="icon" href="/vite.svg">` and remove it if present.
+
+- [ ] **Step 6: Verify the build**
+
+Run: `cd /home/jjureta/Projects/n-link && npm run build --workspace desktop`
+Expected: succeeds with no unresolved imports.
+
+- [ ] **Step 7: Commit**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git add desktop/src desktop/index.html desktop/public
+git commit -m "feat(desktop): port app shell to Vue 3, replace verification harness
+
+Router to vue-router 4 with hash history (custom protocol has no server
+for path-based deep links). createApp replaces new Vue. The device store
+is registered on globalProperties so n-link-core templates keep resolving
+\$devices. Removes Plan A's temporary harness and scaffold assets."
+```
+
+---
+
+### Task 10: Verify against the calculator
+
+**Files:** none (verification only)
+
+**Interfaces:**
+- Consumes: the complete application.
+- Produces: evidence, recorded in the commit message and the progress ledger.
+
+- [ ] **Step 1: Launch**
+
+```bash
+cd /home/jjureta/Projects/n-link/desktop && npm run tauri dev
+```
+
+**Do not run this from a snap-confined terminal** (for example VS Code installed as a snap) — snap injects an `LD_LIBRARY_PATH` whose `libpthread` shadows the system one and the binary dies with `undefined symbol: __libc_pthread_init`. Use a normal terminal.
+
+- [ ] **Step 2: Verify the device list**
+
+Expected: the sidebar's device dropdown lists the CX II by name ("TI-Nspire CX II CAS" once opened, "TI-Nspire(tm) CX II Handheld" before). The refresh button re-enumerates.
+
+This exercises `DeviceSelect`, the store's `enumerate`, and the `addDevice` listener.
+
+- [ ] **Step 3: Verify device info renders**
+
+Expected: `CalcInfo` shows the name, OS version (6.4.0.74), the ID string, and two progress bars for storage and RAM with plausible values (roughly 22MB of 96MB storage used, per Plan A's verified `open_device` output).
+
+This exercises `open_device` end to end through the new store and the Vue 3 reactivity — if `$set` removal broke anything, the panel will stay blank or fail to update.
+
+- [ ] **Step 4: Verify hotplug**
+
+Unplug the calculator. Expected: it disappears from the dropdown and the info panel clears. Replug. Expected: it reappears.
+
+This exercises `removeDevice`/`addDevice` and — importantly — reactive deletion, the riskiest part of Task 8.
+
+- [ ] **Step 5: Confirm the known file-browser limitation**
+
+Expected: the file browser shows its loading spinner and does not populate, because `list_dir` hangs against this firmware.
+
+**This is the known upstream libnspire limitation, not a defect in this port.** Two things to confirm, both of which are about *this* work:
+- The spinner appears — proving the `loading` ref from Task 7 is wired correctly.
+- The rest of the UI stays responsive: the dropdown still opens, the refresh button still works. This proves Task 1's async fix worked. If the whole window freezes, Task 1 is incomplete.
+
+- [ ] **Step 6: Verify the release build**
+
+```bash
+cd /home/jjureta/Projects/n-link/desktop && npm run tauri build
+./src-tauri/target/release/n-link
+```
+
+Expected: the real UI renders. A blank window means a CSP regression — Plan A's final review confirmed the current CSP allows all of this UI's images (bundled SVGs resolve to same-origin or `data:` URLs), so a blank screen would mean something new was introduced.
+
+- [ ] **Step 7: Record the results**
+
+```bash
+cd /home/jjureta/Projects/n-link
+git commit --allow-empty -m "test(desktop): verify Vue 3 UI against CX II
+
+Device enumeration, selection, and info panel verified against hardware.
+Hotplug add/remove verified. File browser hangs at list_dir — known
+upstream libnspire limitation, confirmed the UI stays responsive during
+the hang (Task 1's async fix working)."
+```
+
+---
+
+## Definition of Done
+
+- [ ] All 8 `n-link-core` components are Vue 3 `<script setup>`; no `vue-class-component`, `vue-property-decorator`, or `vue-async-computed` remains
+- [ ] No `$set` / `$delete` anywhere in `desktop/src`
+- [ ] No `require()` or webpack `~` specifiers in any ported file
+- [ ] element-ui is fully replaced by element-plus
+- [ ] `npm run build --workspace desktop` and `npm run tauri build` both succeed
+- [ ] The device list, info panel, and hotplug all work against the CX II
+- [ ] The UI stays responsive while `list_dir` hangs
+- [ ] Plan A's harness `App.vue` is gone
+- [ ] `web/` is untouched
+- [ ] All work is on `port/tauri2-vue3`
+
+## Known limitations carried forward
+
+- **`list_dir` hangs** against current CX II firmware (frozen upstream libnspire). The file browser cannot be verified end to end. Owned by the user, out of scope here.
+- **`web/` remains broken.** It imports `n-link-core`, which is Vue 3 after this plan while `web` is Nuxt 2. This was accepted in the spec and is deferred to its own project.
+- **`{Unknown: n}` firmware enums.** `hw_type`, `run_level`, and `battery` deserialize to `{Unknown: n}` on 2026 firmware. Verified harmless: `CalcInfo` does not render any of them.