adding in sandbox

bin/dev

@@ -80,6 +80,20 @@ class DevCommand(GiteaCommand, RenderDocCommand, ShadersCommand, TracyCommand):
         os.chdir(preset_dir)
         os.execv(binary, [binary, *args])
 
+    ##
+    # Builds the debug preset (incrementally), then runs the raw Vulkan
+    # sandbox from build/debug. Any arguments are passed through.
+    #   dev sandbox [args...]
+    def sandbox(self, *args, **kwargs):
+        preset = self.DEFAULT_PRESET
+        self._build_preset(preset, fresh=False)
+
+        preset_dir = os.path.join(self._project_root(), "build", preset)
+        binary = os.path.join(preset_dir, "bin", "sandbox")
+        print(f"Running: {shlex.join([binary, *args])}")
+        os.chdir(preset_dir)
+        os.execv(binary, [binary, *args])
+
     # Custom helpers
 
     def ownit(self, *args, **kwargs):