Embed app icon and polish Windows build

scripts/build-linux-docker.sh

@@ -8,7 +8,5 @@ container_id="$(docker create pysentry-linux-builder)"
 mkdir -p "$(dirname "$output")"
 docker cp "${container_id}:/out/pysentry" "$output"
 docker rm "$container_id" >/dev/null
-rm -rf "$(dirname "$output")/assets"
-cp -R assets "$(dirname "$output")/assets"
 
 echo "Built $output"

scripts/build-linux.sh

@@ -9,7 +9,5 @@ export GOOS=linux
 export GOARCH=amd64
 
 go build -trimpath -ldflags "-s -w" -o "$output" ./cmd/pysentry
-rm -rf "$(dirname "$output")/assets"
-cp -R assets "$(dirname "$output")/assets"
 
 echo "Built $output"

scripts/build-windows.bat

@@ -21,9 +21,7 @@ if %ERRORLEVEL%==0 (
     windres.exe -O coff -o cmd\pysentry\rsrc_windows_amd64.syso packaging\windows\pysentry.rc
 )
 
-"%GOEXE%" build -trimpath -ldflags "-s -w" -o "%OUTPUT%" .\cmd\pysentry
+"%GOEXE%" build -trimpath -ldflags "-s -w -H=windowsgui" -o "%OUTPUT%" .\cmd\pysentry
 if errorlevel 1 exit /b 1
 
-xcopy /E /I /Y assets "%OUTDIR%assets" >nul
-
 echo Built %OUTPUT%