feat: Refactor game station launch scripts and update session management

ansible/files/game_station/system/launch_session.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+set -euo pipefail
+LOGFILE="$HOME/.local/logs/gamescope.log"
+
+log() { echo "[$(date --iso-8601=seconds)] $*" | tee -a "$LOGFILE"; }
+
+CONF_FILE="$HOME/.config/gamescope/gamescope.conf"
+[ -f "$CONF_FILE" ] && source "$CONF_FILE"
+
+OUTPUT_CONNECTOR=${OUTPUT_CONNECTOR:-HDMI-A-1}
+FRAMERATE=${FRAMERATE:-60}
+RESOLUTION=${RESOLUTION:-1920x1080}
+WIDTH="${RESOLUTION%x*}"
+HEIGHT="${RESOLUTION#*x}"
+
+start_gamescope() {
+  log "Starting Gamescope session..."
+
+  export __GL_GSYNC_ALLOWED=1
+  export __GL_VRR_ALLOWED=1
+  # export __GL_THREADED_OPTIMIZATIONS=1
+  export __GL_SHADER_DISK_CACHE=1
+  export __GL_SYNC_TO_VBLANK=0
+
+  GAMESCOPE_BIN="$(command -v gamescope || true)"
+  if [ -z "$GAMESCOPE_BIN" ]; then
+    log "ERROR: gamescope not found in PATH"
+    exit 127
+  fi
+
+  HDR_FLAG=""
+  if [[ "$HDR_ENABLED" == "1" || "$HDR_ENABLED" == "true" || "$HDR_ENABLED" == "yes" ]]; then
+      HDR_FLAG="--hdr-enabled"
+      log "HDR flag added: --hdr-enabled"
+  else
+      log "HDR disabled, no HDR flag added"
+  fi
+
+  GAMESCOPE_ARGS="--generate-drm-mode fixed --fade-out-duration 200 --cursor-scale-height 720 -f -w $WIDTH -h $HEIGHT --rt --mangoapp -e -O \"$OUTPUT_CONNECTOR\" -r $FRAMERATE $HDR_FLAG"
+  log "Launching Gamescope: $GAMESCOPE_BIN $GAMESCOPE_ARGS -- $@"
+  exec "$GAMESCOPE_BIN" ${GAMESCOPE_ARGS} -- "$@" >>"$LOGFILE" 2>&1
+}
+
+start_kwin() {
+  log "Starting KWin session..."
+  KWIN_BIN="$(command -v kwin_wayland || true)"
+  if [ -z "$KWIN_BIN" ]; then
+    log "ERROR: kwin_wayland not found in PATH"
+    exit 127
+  fi
+
+  KWIN_ARGS="--width $WIDTH --height $HEIGHT"
+  log "Launching KWin: $KWIN_BIN"
+  exec "$KWIN_BIN" ${KWIN_ARGS} "$@" >>"$LOGFILE" 2>&1
+}
+
+if [[ -f "$HOME/.desktop-session-plasma" ]]; then
+  log "Plasma session selected."
+  rm "$HOME/.desktop-session-plasma"
+  start_kwin /usr/local/bin/launch_kde.sh
+else
+  log "Gamescope session selected."
+  start_gamescope /usr/local/bin/launch_steam.sh
+fi