v0.2.9.0 — Windows desktop tray ships; unified Agents & Enrollment page

Desktop:
- Windows tray cross-compiled (cargo-xwin), installed with per-user
  autostart Run key; tray actions trigger_scan/approve_update wired to
  the local API
- Linux tray off the service child-spawn path — XDG autostart only, kills
  the double-launch
- signalDesktopRestart no longer no-ops on Windows (taskkill /F /IM)
- server serves /desktop/:platform/:arch

Web:
- TokenManagement + AgentManagement folded into one Agents & Enrollment
  settings page (useRegistrationTokens hook)

Agent/server:
- platform-aware self-update staging (constants/paths.go), no more
  hardcoded /var/lib/redflag
- consumer helper gated: sudo systemd-run on Linux, child proc elsewhere
- migration 060 drops the never-used token_seats table
- droppage of dead constructors and orphaned windows.go service methods

web/package.json

@@ -23,7 +23,7 @@
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-hot-toast": "^2.6.0",
-    "react-router-dom": "^6.30.0",
+    "react-router-dom": "6.30.4",
     "tailwind-merge": "^2.0.0",
     "zustand": "^5.0.8"
   },