feat(*): Add exported Linux binary training path for faster parallel instances

training/export_linux.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Build the exported Linux training binary from the "Linux Training" preset in
+# Game/export_presets.cfg. That preset's custom_features="training" activates
+# project.godot's `run/main_scene.training` override, so the resulting binary
+# boots straight into training.tscn on its own — official Godot export
+# templates have path/scene overrides compiled out, so this can't be done at
+# launch time via --scene. Re-run any time training-relevant scripts/scenes
+# change — an exported binary is a snapshot, not a live view of the source.
+# See TRAINING_LINUX.md.
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+GODOT_VERSION="4.7.1"
+GODOT_BIN="${GODOT_BIN:-$HOME/ai-training/godot/Godot_v${GODOT_VERSION}-stable_linux.x86_64}"
+OUT="build/CosmicClash.x86_64"
+
+mkdir -p build
+"$GODOT_BIN" --headless --path ../Game --export-release "Linux Training" "$(pwd)/$OUT"
+chmod +x "$OUT"
+echo "Exported: training/$OUT"