fix: PKGBUILD and makefile and rename binary

PKGBUILD

@@ -1,24 +1,22 @@
 pkgname=gsplash-git
 pkgver=0.1.0
 pkgrel=1
-pkgdesc="A lightweight SDL2 splash screen wrapper for game launchers."
+pkgdesc="A lightweight native SDL2 splash screen wrapper for game launchers."
 arch=('x86_64')
 depends=('sdl2' 'sdl2_image')
 makedepends=('make' 'gcc' 'pkgconf')
-source=('src/splash.c' 'Makefile')
-sha256sums=('SKIP' 'SKIP')
 
-prepare() {
-  mkdir -p "$srcdir/src"
-  cp "$srcdir/splash.c" "$srcdir/src/"
-}
+# Leave this empty so makepkg doesn't look for external downloads or local copies
+source=()
+sha256sums=()
 
 build() {
-  cd "$srcdir"
+  # Point directly to your active project folder where the Makefile lives
+  cd "$startdir"
   make
 }
 
 package() {
-  cd "$srcdir"
+  cd "$startdir"
   make DESTDIR="$pkgdir" PREFIX="/usr" install
-}
+}