pi: bump model to gpt-6-sol and add compaction package

.pi/agent/models.json

@@ -75,6 +75,22 @@
           }
         }
       ]
+    },
+    "bonsai": {
+      "baseUrl": "http://127.0.0.1:8080/v1",
+      "api": "openai-completions",
+      "apiKey": "local",
+      "models": [
+        {
+          "id": "bonsai-27b",
+          "name": "Local Bonsai 27B (PQ2_0)",
+          "reasoning": true,
+          "input": ["text"],
+          "contextWindow": 16384,
+          "maxTokens": 2048,
+          "cost": {"input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0}
+        }
+      ]
     }
   }
 }