feat(mesh): device-detected setup modal with board images + full radio settings

Plugging in a LoRa radio now pops a global two-step setup modal on any
page: step 1 shows the ACTUAL detected board (25 board SVGs vendored
from the Meshtastic web-flasher, GPL-3.0; matched by USB product string
on native-USB boards, vid:pid heuristics for bridge chips, animated
fallback otherwise); step 2 configures with Archipelago presets — the
LoRa region pre-selected from the node's location (new lat/lon→region
mapping), channel 'archipelago', node name, and an advanced firmware
pin. Options adapt per protocol: region+channel program Meshtastic;
MeshCore shows its community frequency plan (firmware owns RF); RNode
defers to the Reticulum daemon config.

Backend: mesh.configure now accepts lora_region (validated against the
driver's region table) and device_kind (probe pin); mesh.status returns
the persisted values plus per-port USB identity (sysfs vid/pid/product)
for board identification. The Mesh Device tab gains a full settings
form (region with duty-cycle/legality hints, firmware pin, channel,
name, identity broadcast) replacing the read-only panel; the old
Mesh-page-only onboarding modal is superseded by the global flow.

Mock backend: stateful mesh config so the dev UI demos the full
detect→configure round-trip (disable mesh → modal fires with Heltec V3).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/App.vue

@@ -37,6 +37,9 @@
     <!-- PWA Install Prompt (Install app, not just Add to Home Screen) -->
     <PWAInstallPrompt />
 
+    <!-- Global "mesh device detected" setup flow (fires on any page) -->
+    <MeshDeviceSetupModal />
+
     <!-- Global persistent audio player (bottom bar) -->
     <GlobalAudioPlayer />
 
@@ -88,6 +91,8 @@ import ToastStack from './components/ToastStack.vue'
 import Screensaver from './components/Screensaver.vue'
 import HelpGuideModal from './components/HelpGuideModal.vue'
 import GlobalAudioPlayer from './components/GlobalAudioPlayer.vue'
+import MeshDeviceSetupModal from './components/mesh/MeshDeviceSetupModal.vue'
+import { useMeshStore } from './stores/mesh'
 
 import { useControllerNav } from '@/composables/useControllerNav'
 import { playKeyboardTypingSound } from '@/composables/useLoginSounds'
@@ -360,6 +365,9 @@ function onVisibilityChange() {
 
 onMounted(async () => {
   syncKioskSafeArea()
+  // Light app-wide mesh poll so a freshly plugged-in radio surfaces the
+  // setup modal on any page (the Mesh view's own poll takes over there).
+  useMeshStore().startGlobalDetection()
   document.addEventListener('visibilitychange', onVisibilityChange)
   window.addEventListener('keydown', onKeyDown, true)
   window.addEventListener('mousemove', onUserActivity)