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

training/cosmic_env.py

@@ -19,10 +19,27 @@ TRAINING_SCENE = "res://scenes/training.tscn"
 
 
 class CosmicClashEnv(GodotEnv):
-    """GodotEnv that launches `godot --path Game res://scenes/training.tscn`."""
+    """GodotEnv that launches either the project from source or an exported binary.
 
-    # env_path is a Godot binary, not an exported game: skip the suffix and
-    # platform checks stock GodotEnv applies to exported executables.
+    Source mode (default): `godot --path Game res://scenes/training.tscn` — the
+    positional scene argument overrides the project's normal main scene.
+    Exported mode (`exported=True`): `env_path` is a pre-built game executable
+    (see training/export_linux.sh, "Linux Training" preset) — no `--path` and
+    no scene override needed or possible: official Godot export templates have
+    path/scene overrides compiled out (`--scene`/a positional scene argument
+    hard-aborts with "compiled without support for path overrides"), so the
+    binary instead boots straight into training.tscn on its own via
+    project.godot's `run/main_scene.training` feature-tag override, activated
+    by that preset's `custom_features="training"`.
+    """
+
+    def __init__(self, *args, exported: bool = False, **kwargs):
+        self.exported = exported
+        super().__init__(*args, **kwargs)
+
+    # env_path is a Godot binary (or, in exported mode, a game executable we
+    # built ourselves), not a stock godot_rl exported-project path: skip the
+    # suffix and platform checks stock GodotEnv applies to those.
     def _set_platform_suffix(self, env_path: str) -> str:
         return env_path
 
@@ -32,11 +49,10 @@ class CosmicClashEnv(GodotEnv):
     def _launch_env(self, env_path, port, show_window, framerate, seed, action_repeat, speedup, **kwargs):
         # sync.gd reads --key=value pairs from the raw command line; they must
         # NOT go after a `--` separator or OS.get_cmdline_args() drops them.
-        cmd = [
-            env_path,
-            "--path",
-            str(GAME_DIR),
-            TRAINING_SCENE,
+        cmd = [env_path]
+        if not self.exported:
+            cmd += ["--path", str(GAME_DIR), TRAINING_SCENE]
+        cmd += [
             f"--port={port}",
             f"--env_seed={seed}",
         ]