feat(server): use faster model in ci test (#13038)

fix AI-329

packages/backend/server/src/plugins/copilot/prompt/prompts.ts

@@ -338,7 +338,7 @@ Convert a multi-speaker audio recording into a structured JSON format by transcr
   {
     name: 'Rerank results',
     action: 'Rerank results',
-    model: 'gpt-4.1-mini',
+    model: 'gpt-4.1',
     messages: [
       {
         role: 'system',
@@ -1677,7 +1677,7 @@ This sentence contains information from the first source[^1]. This sentence refe
 Before starting Tool calling, you need to follow:
 - DO NOT explain what operation you will perform.
 - DO NOT embed a tool call mid-sentence.
-- When searching for unknown information or keyword, prioritize searching the user's workspace.
+- When searching for unknown information, personal information or keyword, prioritize searching the user's workspace rather than the web.
 - Depending on the complexity of the question and the information returned by the search tools, you can call different tools multiple times to search.
 </tool-calling-guidelines>
 

packages/backend/server/src/plugins/copilot/prompt/service.ts

@@ -53,8 +53,11 @@ export class PromptService implements OnApplicationBootstrap {
    * @returns prompt messages
    */
   async get(name: string): Promise<ChatPrompt | null> {
-    const cached = this.cache.get(name);
-    if (cached) return cached;
+    // skip cache in dev mode to ensure the latest prompt is always fetched
+    if (!env.dev) {
+      const cached = this.cache.get(name);
+      if (cached) return cached;
+    }
 
     const prompt = await this.db.aiPrompt.findUnique({
       where: {