[Release] Emby Theater 4.0.0 for Linux & Raspberry Pi (Tauri rewrite)

[hatharry 118]

Hi all,

I've been building a Emby Theater client for Linux, and v4.0.0
is now available. It's a ground-up rewrite of the Theater lineage (the old
Electron app ended at 3.0.21) — this one is built on Tauri + WebKitGTK, so
there's no bundled Chromium: ~2.6 MB packages and a fraction of the memory
footprint.

GitHub: https://github.com/hatharry/emby-theater-tauri
Release: https://github.com/hatharry/emby-theater-tauri/releases/tag/4.0.0

What you get
- The real Emby Theater TV web client in a native window (TV layout, remote
  friendly), plus a desktop layout
- Hardware-accelerated playback through GStreamer (VA-API/NVDEC on x86,
  V4L2 MPP on Pi/RK platforms), with per-device profiles tuned for the
  Raspberry Pi
- HDMI-CEC support: control playback with your TV remote (volume, navigation,
  power commands)
- Wake-on-LAN and automatic server discovery on the login screen
- Shutdown/restart of the host from the in-app back menu

Platforms & packages
- amd64: .deb, .rpm, and a self-contained .AppImage (90 MB, bundles
  GStreamer — runs on any x86_64 distro)
- arm64: .deb (Raspberry Pi OS 64-bit, other aarch64)
- armhf: .deb (Raspberry Pi OS 32-bit)

Raspberry Pi notes
Tested on a Pi 4 (1 GB+) running Raspberry Pi OS (bookworm/trixie, labwc or
GNOME). H.264 decodes in hardware; HEVC falls back to H.264 (the Pi 4 has
no HEVC block). Subtitles (embedded and external) render through the
client's own parsers.

Install (Debian/Ubuntu/Raspberry Pi OS):
    sudo apt install ./emby-theater_4.0.0_amd64.deb     # pick your arch
Run:
    emby-theater

Feedback welcome — especially from Pi 5 / RK3588 users on how the device
profiles behave.