Harden Steam Big Picture launch configuration.

Run Steam from its installation root with UTF-8 locale and temporary directory setup, and remove Desktop fallback entries to keep Sunshine launching a single stable app profile.

Co-authored-by: Cursor <cursoragent@cursor.com>

players/p1_config/apps.json

@@ -3,14 +3,10 @@
     "PATH": "$(PATH):$(HOME)/.local/bin:/usr/games"
   },
   "apps": [
-    {
-      "name": "Desktop",
-      "image-path": "desktop.png"
-    },
     {
       "name": "Steam Big Picture",
       "detached": [
-        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; mkdir -p /home/steam/.local/share/Steam /tmp/xdg-steam; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam LANG=C LC_ALL=C /usr/games/steam -tenfoot -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing >/home/steam/steam-app.log 2>&1 < /dev/null &'"
+        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; ROOT=/home/steam/.local/share/Steam/debian-installation; mkdir -p ${ROOT} /tmp/xdg-steam /home/steam/tmp; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam TMPDIR=/home/steam/tmp LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 bash -lc \"cd ${ROOT} && /usr/games/steam -gamepadui -fullscreen -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing\" >/home/steam/steam-app.log 2>&1 < /dev/null &'"
       ],
       "prep-cmd": [
         {

players/p2_config/apps.json

@@ -3,14 +3,10 @@
     "PATH": "$(PATH):$(HOME)/.local/bin:/usr/games"
   },
   "apps": [
-    {
-      "name": "Desktop",
-      "image-path": "desktop.png"
-    },
     {
       "name": "Steam Big Picture",
       "detached": [
-        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; mkdir -p /home/steam/.local/share/Steam /tmp/xdg-steam; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam LANG=C LC_ALL=C /usr/games/steam -tenfoot -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing >/home/steam/steam-app.log 2>&1 < /dev/null &'"
+        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; ROOT=/home/steam/.local/share/Steam/debian-installation; mkdir -p ${ROOT} /tmp/xdg-steam /home/steam/tmp; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam TMPDIR=/home/steam/tmp LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 bash -lc \"cd ${ROOT} && /usr/games/steam -gamepadui -fullscreen -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing\" >/home/steam/steam-app.log 2>&1 < /dev/null &'"
       ],
       "prep-cmd": [
         {

players/p3_config/apps.json

@@ -3,14 +3,10 @@
     "PATH": "$(PATH):$(HOME)/.local/bin:/usr/games"
   },
   "apps": [
-    {
-      "name": "Desktop",
-      "image-path": "desktop.png"
-    },
     {
       "name": "Steam Big Picture",
       "detached": [
-        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; mkdir -p /home/steam/.local/share/Steam /tmp/xdg-steam; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam LANG=C LC_ALL=C /usr/games/steam -tenfoot -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing >/home/steam/steam-app.log 2>&1 < /dev/null &'"
+        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; ROOT=/home/steam/.local/share/Steam/debian-installation; mkdir -p ${ROOT} /tmp/xdg-steam /home/steam/tmp; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam TMPDIR=/home/steam/tmp LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 bash -lc \"cd ${ROOT} && /usr/games/steam -gamepadui -fullscreen -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing\" >/home/steam/steam-app.log 2>&1 < /dev/null &'"
       ],
       "prep-cmd": [
         {

players/p4_config/apps.json

@@ -3,14 +3,10 @@
     "PATH": "$(PATH):$(HOME)/.local/bin:/usr/games"
   },
   "apps": [
-    {
-      "name": "Desktop",
-      "image-path": "desktop.png"
-    },
     {
       "name": "Steam Big Picture",
       "detached": [
-        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; mkdir -p /home/steam/.local/share/Steam /tmp/xdg-steam; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam LANG=C LC_ALL=C /usr/games/steam -tenfoot -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing >/home/steam/steam-app.log 2>&1 < /dev/null &'"
+        "bash -lc 'id steam >/dev/null 2>&1 || useradd -m -s /bin/bash steam; ROOT=/home/steam/.local/share/Steam/debian-installation; mkdir -p ${ROOT} /tmp/xdg-steam /home/steam/tmp; ln -sfn /home/steam/.local/share/Steam /home/steam/.steam; chown -R steam:steam /home/steam /tmp/xdg-steam; runuser -u steam -- nohup env DISPLAY=:99 HOME=/home/steam XDG_RUNTIME_DIR=/tmp/xdg-steam TMPDIR=/home/steam/tmp LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 bash -lc \"cd ${ROOT} && /usr/games/steam -gamepadui -fullscreen -no-cef-sandbox -cef-disable-gpu -cef-disable-gpu-compositing\" >/home/steam/steam-app.log 2>&1 < /dev/null &'"
       ],
       "prep-cmd": [
         {