Add battlefield visuals and camp talk slice

data/scenarios/001_yellow_turbans.json

@@ -18,9 +18,20 @@
     "lines": [
       "Yellow Turban rebels have gathered near Yingchuan.",
       "Cao Cao and Xiahou Dun must break their formation before the revolt spreads."
+    ],
+    "camp_dialogue": [
+      { "speaker": "Cao Cao", "side": "left", "text": "Yingchuan is a spark in dry grass. If we move decisively, the court may still believe order can return." },
+      { "speaker": "Xiahou Dun", "side": "right", "text": "The men are ready. Give me the front, and I will keep the rebels fixed while you cut their nerve." }
     ]
   },
   "shop": {
+    "merchant": {
+      "name": "Camp Merchant",
+      "lines": [
+        "Roadside stores are thin, my lord, but I saved beans and antidotes for your column.",
+        "The northern woods have rumors of a hidden cache, if your scouts can reach it."
+      ]
+    },
     "items": ["bean", "antidote"]
   },
   "roster": {
@@ -33,9 +44,10 @@
   "map": {
     "width": 10,
     "height": 8,
+    "background": "res://art/backgrounds/battlefield_frontier.png",
     "terrain": [
-      "GGGGGGGGGG",
-      "GGGFFFFGGG",
+      "GGGGGGGGCC",
+      "GGGFFFFGCC",
       "GGGFFFGGGG",
       "GGGRRGGGGG",
       "GGGRRGGHHG",