feat: D.6 first-run wizard — detect, start, link, group, gek-init, pair

Desktop client guides new users through the full onboarding sequence
without a terminal: detect local node → start daemon (systemd with
direct-start fallback for dev) → link node key to hub → create group →
attach directories → gek-init → operator pair.

- node:detect returns configured field to distinguish missing vs stopped
- node:start tries systemctl first, checks is-active, falls back to
  spawning the binary directly when the unit crashes (dev mode)
- probeNode() extracts the shared config→token→fetch pattern
- SetupWelcome on empty HomePage links to /create-group
- CreateGroupWizard step 0 handles node detection and start
- platform.js exposes node.installed() and node.start()
- 12 setup.* i18n keys added to all 10 locales
- Integration test for node:start fallback logic

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
index d0c9649..f1c2b75 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
@@ -466,4 +466,18 @@ export default {
   'group.unmute': 'Unmute notifications',
   'profile.title': 'Profiel',
   'usermenu.profile': 'Profiel',
+
+  // First-run setup wizard
+  'setup.welcome_title': 'Welkom bij MeshBay',
+  'setup.welcome_message': 'Uw node host uw bestanden — versleuteld, op uw machine. Laten we hem starten en uw eerste groep aanmaken.',
+  'setup.node_detected': 'Lokale node gedetecteerd en actief.',
+  'setup.node_not_running': 'Uw node is geïnstalleerd maar draait niet.',
+  'setup.node_start': 'Node starten',
+  'setup.node_starting': 'Node wordt gestart…',
+  'setup.node_started': 'Node gestart.',
+  'setup.node_not_installed': 'meshbay-node is niet geïnstalleerd op deze machine.',
+  'setup.node_install_hint': 'Installeer het met uw pakketbeheerder en kom hier terug.',
+  'setup.skip': 'Overslaan — groep aanmaken zonder lokale node',
+  'setup.create_group': 'Eerste groep aanmaken',
+  'setup.dismiss': 'Installatie overslaan',
 };