fix(ts-oss): isolate entity store from memory store by default (#4829)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>

mem0-ts/src/oss/src/config/defaults.ts

@@ -22,7 +22,7 @@ export const DEFAULT_MEMORY_CONFIG: MemoryConfig = {
     config: {
       baseURL: "https://api.openai.com/v1",
       apiKey: process.env.OPENAI_API_KEY || "",
-      model: "gpt-4.1-nano-2025-04-14",
+      model: "gpt-5-mini",
       modelProperties: undefined,
     },
   },

mem0-ts/src/oss/src/llms/azure.ts

@@ -18,7 +18,7 @@ export class AzureOpenAILLM implements LLM {
       endpoint: endpoint as string,
       ...rest,
     });
-    this.model = config.model || "gpt-4";
+    this.model = config.model || "gpt-5-mini";
   }
 
   async generateResponse(

mem0-ts/src/oss/src/llms/openai.ts

@@ -11,7 +11,7 @@ export class OpenAILLM implements LLM {
       apiKey: config.apiKey,
       baseURL: config.baseURL,
     });
-    this.model = config.model || "gpt-4.1-nano-2025-04-14";
+    this.model = config.model || "gpt-5-mini";
   }
 
   async generateResponse(

mem0-ts/src/oss/src/llms/openai_structured.ts

@@ -8,7 +8,7 @@ export class OpenAIStructuredLLM implements LLM {
 
   constructor(config: LLMConfig) {
     this.openai = new OpenAI({ apiKey: config.apiKey });
-    this.model = config.model || "gpt-4-turbo-preview";
+    this.model = config.model || "gpt-5-mini";
   }
 
   async generateResponse(