Windows desktop build must be compiled on a Windows machine
(Flutter Windows toolchain is not available on macOS).

  cd apps/lipochat
  flutter pub get
  dart run flutter_launcher_icons
  flutter build windows --release --dart-define=API_BASE=https://www.lipochat.com

Output: build/windows/x64/runner/Release/
Zip as Lipochat-windows.zip → dist/apps/ + public_html/downloads/

API: https://www.lipochat.com

v1.4.0+10 — Instant native UX + visitor message beep:
- Crash-safe Android startup (notifications/FGS after first frame / login)
- No full-screen chat spinner — shell (header + compose) shows immediately
- Inbox keeps previous list visible while polling (~1s)
- Chat message poll ~800ms; in-memory cache for instant reopen
- Images: multipart upload + Image.network thumbnails + Lightshot paste
- Inbox badge uses server unread_count
- Chat header shows website domain/name
- More → Billing (plan, balance, expiry, plans, upgrade via web)
- Optimistic message send retained
- Visitor message beep (message-beep.mp3) — new open chat once + every visitor message
- Primary Android download: lipochatnewapk.apk

NOTE: No prebuilt Windows EXE is hosted yet — rebuild on Windows from this
source tree so the visitor-message beep is included.