justfile: add install-tv for Chromecast with Google TV (network adb over WiFi)

Adds an adb variable (from nixpkgs android-tools), an install-tv <ip> recipe
that adb-connects to :5555 and installs the debug APK, and tv-disconnect.

justfile

@@ -11,6 +11,10 @@
 pkg := ".?submodules=1#moonlight-android"
 build_flags := "--builders '' --print-build-logs"
 
+# adb from nixpkgs (no system install needed). The adb server daemon persists
+# between invocations, so `connect` in one recipe line carries to the next.
+adb := "nix run nixpkgs#android-tools -- adb"
+
 # list available recipes
 default:
     @just --list
@@ -27,9 +31,19 @@ build:
 apk: build
     @ls -l result/app-nonRoot-debug.apk
 
-# install the built debug APK onto a connected device/emulator (needs adb + USB debugging)
+# install the built debug APK onto a USB-connected device/emulator (needs USB debugging)
 install: build
-    nix run nixpkgs#android-tools -- adb install -r result/app-nonRoot-debug.apk
+    {{ adb }} install -r result/app-nonRoot-debug.apk
+
+# install over WiFi to a Chromecast with Google TV (enable Developer options -> USB debugging first): just install-tv 192.168.1.x
+install-tv ip: build
+    {{ adb }} connect {{ ip }}:5555
+    {{ adb }} -s {{ ip }}:5555 install -r result/app-nonRoot-debug.apk
+    @echo "Installed. Launch Moonlight from the TV's app list (apps row / 'See all apps')."
+
+# disconnect a network adb device (e.g. the TV) when done
+tv-disconnect ip:
+    {{ adb }} disconnect {{ ip }}:5555
 
 # regenerate the offline Maven lockfile (deps.json) after changing dependencies
 deps: