Checkpoint 2: integrate native Editor, MCP, gameplay builds and standalone export

assets/ui/dark.json

@@ -0,0 +1,16 @@
+{
+  "background": [0.073, 0.078, 0.090, 1],
+  "surface": [0.102, 0.108, 0.122, 1],
+  "raised": [0.145, 0.151, 0.169, 1],
+  "hover": [0.19, 0.197, 0.219, 1],
+  "border": [0.24, 0.25, 0.278, 1],
+  "text": [0.88, 0.889, 0.91, 1],
+  "muted": [0.59, 0.61, 0.65, 1],
+  "accent": [0.65, 0.60, 0.88, 1],
+  "selection": [0.26, 0.245, 0.35, 1],
+  "danger": [0.92, 0.39, 0.38, 1],
+  "font_size": 14,
+  "row_height": 28,
+  "padding": 8,
+  "gap": 4
+}

assets/ui/editor-layout.json

@@ -0,0 +1,19 @@
+{
+  "root": {
+    "id": "root", "kind": "column", "layout": {"gap": 1},
+    "children": [
+      {"id": "menubar", "kind": "panel", "layout": {"height": 34, "padding": 3}},
+      {"id": "toolbar", "kind": "panel", "layout": {"height": 40, "padding": 5}},
+      {"id": "workspace", "kind": "row", "layout": {"flex": 1, "gap": 1}, "children": [
+        {"id": "scene_panel", "kind": "panel", "layout": {"width": 224, "min_width": 150, "gap": 0}},
+        {"id": "left_divider", "kind": "divider", "layout": {"width": 5}},
+        {"id": "viewport", "kind": "viewport", "layout": {"flex": 1, "min_width": 180}},
+        {"id": "right_divider", "kind": "divider", "layout": {"width": 5}},
+        {"id": "inspector_panel", "kind": "panel", "layout": {"width": 300, "min_width": 210, "gap": 0}}
+      ]},
+      {"id": "bottom_divider", "kind": "divider", "layout": {"height": 5}},
+      {"id": "bottom_panel", "kind": "panel", "layout": {"height": 184, "min_height": 90, "gap": 0}},
+      {"id": "statusbar", "kind": "panel", "layout": {"height": 26, "padding": 0}}
+    ]
+  }
+}