Add rank, friends, fishing, and camp treasure with T2 studio models and skill presentation.

Co-authored-by: Cursor <cursoragent@cursor.com>

Config/Gameplay/greenfield.json

@@ -1019,6 +1019,43 @@
       "chapter": "属性挑战"
     }
   ],
+  "friends": {
+    "limit": 20,
+    "requestLimit": 20,
+    "blockLimit": 20,
+    "sendLimit": 5,
+    "receiveLimit": 5,
+    "gift": {
+      "coins": 20,
+      "candy": 0,
+      "balls": 0,
+      "tickets": 0
+    }
+  },
+  "fishing": {
+    "unlockStage": 1,
+    "ballCost": 1,
+    "dailyLimit": 5,
+    "duration": 20,
+    "grace": 3,
+    "fishCount": 8,
+    "windowMs": 900,
+    "tiers": [
+      {"minScore": 3, "reward": {"coins": 10, "candy": 0, "balls": 0, "tickets": 0}},
+      {"minScore": 5, "reward": {"coins": 20, "candy": 0, "balls": 0, "tickets": 0}},
+      {"minScore": 8, "reward": {"coins": 30, "candy": 5, "balls": 0, "tickets": 0}}
+    ]
+  },
+  "treasure": {
+    "unlockStage": 1,
+    "dailyLimit": 3,
+    "events": ["旗杆下的硬币", "花盆边的纸包", "路灯旁的小袋"],
+    "bands": [
+      {"minClears": 1, "reward": {"coins": 10, "candy": 0, "balls": 0, "tickets": 0}},
+      {"minClears": 4, "reward": {"coins": 20, "candy": 0, "balls": 0, "tickets": 0}},
+      {"minClears": 10, "reward": {"coins": 30, "candy": 5, "balls": 0, "tickets": 0}}
+    ]
+  },
   "stages": [
     {
       "id": 1,