feat: add Kimi K2.5 model (#738)

Co-authored-by: Letta <noreply@letta.com>

src/models.json

@@ -532,7 +532,7 @@
     "id": "kimi-k2",
     "handle": "openrouter/moonshotai/kimi-k2-0905",
     "label": "Kimi K2",
-    "description": "Kimi's latest model",
+    "description": "Kimi's K2 model",
     "updateArgs": {
       "context_window": 262144
     }
@@ -548,6 +548,16 @@
       "temperature": 1.0
     }
   },
+  {
+    "id": "kimi-k2.5",
+    "handle": "openrouter/moonshotai/kimi-k2.5",
+    "label": "Kimi K2.5",
+    "description": "Kimi's latest coding model",
+    "isFeatured": true,
+    "updateArgs": {
+      "context_window": 262144
+    }
+  },
   {
     "id": "deepseek-chat-v3.1",
     "handle": "openrouter/deepseek/deepseek-chat-v3.1",