feat: windows installer with remote updates and remote management added.

build.bat

@@ -0,0 +1,16 @@
+@echo off
+echo Building series3-watcher.exe...
+pip install pyinstaller pystray Pillow
+
+REM Check whether icon.ico exists alongside this script.
+REM If it does, include it; otherwise build without a custom icon.
+if exist "%~dp0icon.ico" (
+    pyinstaller --onefile --windowed --name series3-watcher --icon="%~dp0icon.ico" series3_tray.py
+) else (
+    echo [INFO] icon.ico not found -- building without custom icon.
+    pyinstaller --onefile --windowed --name series3-watcher series3_tray.py
+)
+
+echo.
+echo Done. Check dist\series3-watcher.exe
+pause