Add Sishui Gate camp content

data/scenarios/002_sishui_gate.json

@@ -18,9 +18,55 @@
     "lines": [
       "The coalition gathers to challenge Dong Zhuo.",
       "Cao Cao leads a small vanguard to test Hua Xiong's defenses."
+    ],
+    "camp_conversations": [
+      {
+        "id": "sishui_coalition_reading",
+        "group": "officer",
+        "officer_id": "cao_cao",
+        "label": "Cao Cao - Coalition Nerve",
+        "speaker": "Cao Cao",
+        "summary": "Measure the coalition before challenging Hua Xiong.",
+        "lines": [
+          { "speaker": "Cao Cao", "side": "left", "text": "The coalition has banners enough to shade the pass, yet every lord waits for another to move first." },
+          { "speaker": "Xiahou Dun", "side": "right", "text": "Then let them watch us move. Hua Xiong will learn which banner has teeth." }
+        ]
+      },
+      {
+        "id": "sishui_xiahou_yuan_ridge",
+        "group": "officer",
+        "officer_id": "xiahou_yuan",
+        "label": "Xiahou Yuan - Ridge Line",
+        "speaker": "Xiahou Yuan",
+        "summary": "Discuss the archers watching the road.",
+        "lines": [
+          { "speaker": "Xiahou Yuan", "side": "right", "text": "Their archers favor the ridge above the road. If we let them settle, the vanguard will bleed before touching Hua Xiong." },
+          { "speaker": "Cao Cao", "side": "left", "text": "Keep their eyes busy. A single opened flank will make the pass feel wider than it is." }
+        ]
+      },
+      {
+        "id": "sishui_quartermaster_antidote",
+        "group": "topic",
+        "label": "Quartermaster's Bundle",
+        "summary": "Check the last useful supplies before the gate.",
+        "lines": [
+          { "speaker": "Coalition Quartermaster", "side": "left", "text": "My lord, the western stores are crowded with borrowed seals and empty promises. I found one antidote bundle that is actually useful." },
+          { "speaker": "Cao Ren", "side": "right", "text": "Take it. A single clean cure can keep a line from folding." }
+        ],
+        "effects": [
+          { "type": "grant_item", "item_id": "antidote", "count": 1, "text": "The quartermaster adds an Antidote to the field supplies." }
+        ]
+      }
     ]
   },
   "shop": {
+    "merchant": {
+      "name": "Coalition Merchant",
+      "lines": [
+        "Every lord at Sishui wants credit, but only the first vanguard buys enough bandages.",
+        "I have robes, armor, bows, and spears. If Hua Xiong breaks through, nobody will ask where they came from."
+      ]
+    },
     "items": [
       "bean",
       "antidote",