v1.2.3-fork — more Windows pet mode fixes

Second round of Windows pet-mode fixes, targeting DWM composition stalls that survive v1.2.2:

• Skip the opacity-0 transition on Windows: dropping a transparent window's opacity to 0 can permanently stall DWM composition (especially under virtualized/software rendering), freezing the app on its last frame.
• Keep the pet-mode window 1px short of the full screen height on Windows: an exactly screen-sized transparent window triggers the DWM fullscreen optimization, which stops compositing it.

Unsigned installer: SmartScreen will warn on first run — click More info → Run anyway.

v1.2.2-fork — pet mode fix for Windows

Fixes pet mode on Windows: frozen avatar, opaque overlay, and full mouse passthrough with no way back to window mode.

• Disable Chromium's native window occlusion tracking on Windows (it paused the renderer once the pet-mode window became transparent and click-through, deadlocking the mode-change handshake)
• Disable background throttling so the mode-change handshake keeps running
• Fallback timers: even if the renderer stalls, mode changes complete and the window is never left invisible — tray > Window Mode always recovers the app
• Window is created transparent from the start (mid-session background switches are unreliable on Windows DWM)
• Skip setFocusable(false) on Windows so hover detection works in pet mode
• Platform-aware mouse passthrough (Windows/X11 with forwarding, macOS/Wayland without)

Unsigned installer: SmartScreen will warn on first run — click More info → Run anyway.

Open-LLM-VTuber frontend 1.2.1 (fork) — Windows installer

Windows installer built from feat/frontend-full (ce67ef6), including the streamed-audio jitter cushion improvements.

Install: download open-llm-vtuber-1.2.1-setup.exe and run it. The installer is unsigned, so Windows SmartScreen will show "Windows protected your PC" on first run — click More info → Run anyway. A desktop shortcut is created automatically.