fix(acp-ai-provider): update version to 0.1.25 and optimize language model instantiation

Author: yaonyan

packages/acp-ai-provider/deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@mcpc/acp-ai-provider",
-  "version": "0.1.24",
+  "version": "0.1.25",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/mcpc-tech/mcpc.git"

packages/acp-ai-provider/src/provider.ts

@@ -27,10 +27,11 @@ export class ACPProvider {
    * @returns A LanguageModelV2 instance
    */
   languageModel(): ACPLanguageModel {
-    const modelId = "acp-agent";
-    const model = new ACPLanguageModel(modelId, this.config);
-    this.model = model;
-    return model;
+    if (!this.model) {
+      const modelId = "acp-agent";
+      this.model = new ACPLanguageModel(modelId, this.config);
+    }
+    return this.model;
   }
 
   /**