Clean up sunshine-bin-debug too when falling back to source build

When sunshine-bin trips the ldd check and we switch to the source build,
the prior install left sunshine-bin-debug behind. The source package
includes its own sunshine-debug which collides on
/usr/lib/debug/usr/bin/sunshine.debug, so pacman refuses the install.

Remove both sunshine-bin and sunshine-bin-debug before yay -S sunshine.
uninstall.sh similarly drops all four variants.

lib/packages.sh

@@ -35,7 +35,14 @@ install_sunshine() {
       warn "sunshine-bin has unresolved shared library deps (rolling-Arch library drift)."
       warn "Falling back to the source build (AUR 'sunshine'). This takes ~5-10 minutes."
       ldd "$(command -v sunshine)" 2>/dev/null | grep 'not found' | sed 's/^/    /' >&2 || true
-      as_root pacman -Rns --noconfirm sunshine-bin
+      # Remove both sunshine-bin AND its sibling sunshine-bin-debug, otherwise
+      # the source build's sunshine-debug package collides on
+      # /usr/lib/debug/usr/bin/sunshine.debug.
+      for stale in sunshine-bin-debug sunshine-bin; do
+        if pacman -Qi "$stale" >/dev/null 2>&1; then
+          as_root pacman -Rns --noconfirm "$stale"
+        fi
+      done
       SUNSHINE_PKG="sunshine"
       yay_install sunshine
       if ! sunshine_runtime_deps_ok; then