Fix Proton-GE install path breaking first Steam launch (v13.0-KDE)

install_proton_ge_from_github() was creating ~/.steam/steam/compatibilitytools.d
via mkdir -p before Steam had ever been launched. That forces ~/.steam/steam
to exist as a real directory — which then prevents Steam, on first launch,
from creating it as a symlink to ~/.local/share/Steam. Result: desktop Steam
fails with "can't configure Steam data" / "Steam needs to be online to update".

Switch the install target to ~/.local/share/Steam/compatibilitytools.d/ (the
real Steam data dir). When Steam first runs it sets up ~/.steam/steam as a
symlink → ~/.local/share/Steam, so Proton-GE is picked up automatically.

Also check the legacy ~/.steam/steam/compatibilitytools.d path in the
idempotency probe so re-runs on previously-installed boxes don't redownload.

Bump version 12.27-KDE → 13.0-KDE (covers this fix plus the 2026-05-16
plasma-login-manager / AUR-reliability update which never bumped the string).

super-alt-s.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -Euo pipefail
 
-Super_Shift_S_VERSION="12.27-KDE"
+Super_Shift_S_VERSION="13.0-KDE"
 
 CONFIG_FILE="/etc/gaming-mode.conf"
 [[ -f "$HOME/.gaming-mode.conf" ]] && CONFIG_FILE="$HOME/.gaming-mode.conf"
@@ -860,16 +860,24 @@ install_proton_ge_from_github() {
     return 0
   fi
 
-  local install_dir="$user_home/.steam/steam/compatibilitytools.d"
+  # Write to the real Steam data dir, NOT ~/.steam/steam. The latter is a
+  # symlink that Steam itself creates on first launch (→ ~/.local/share/Steam).
+  # If we mkdir -p ~/.steam/steam before Steam has ever run, it becomes a real
+  # directory and Steam refuses to start with "can't configure Steam data".
+  local install_dir="$user_home/.local/share/Steam/compatibilitytools.d"
+  local legacy_dir="$user_home/.steam/steam/compatibilitytools.d"
 
   # Idempotent: if any GE-Proton* directory already exists (from AUR pkg,
   # protonup-qt, or a previous run of this function), don't reinstall.
-  if compgen -G "$install_dir/GE-Proton*" > /dev/null 2>&1; then
+  # Check both the real path and the legacy symlink path.
+  for check_dir in "$install_dir" "$legacy_dir"; do
+    if compgen -G "$check_dir/GE-Proton*" > /dev/null 2>&1; then
       local existing
-    existing=$(basename "$(compgen -G "$install_dir/GE-Proton*" | head -1)")
+      existing=$(basename "$(compgen -G "$check_dir/GE-Proton*" | head -1)")
       info "Proton-GE already installed: $existing — skipping"
       return 0
     fi
+  done
 
   echo ""
   echo "================================================================"