feat: add default systemPromptMappings for Qwen models

- Add default systemPromptMappings configuration for qwen3-coder-plus model
- Support DashScope compatible mode API endpoints
- Include Qwen coder system prompt template with git repository and sandbox placeholders
- Add comprehensive test coverage for default and custom systemPromptMappings
- Update documentation to reflect the new default configuration behavior
- Ensure backward compatibility with existing user configurations

packages/core/src/config/config.ts

@@ -154,6 +154,11 @@ export interface ConfigParameters {
     temperature?: number;
     max_tokens?: number;
   };
+  systemPromptMappings?: Array<{
+    baseUrls?: string[];
+    modelNames?: string[];
+    template?: string;
+  }>;
 }
 
 export class Config {
@@ -204,6 +209,11 @@ export class Config {
     temperature?: number;
     max_tokens?: number;
   };
+  private readonly systemPromptMappings?: Array<{
+    baseUrls?: string[];
+    modelNames?: string[];
+    template?: string;
+  }>;
   private modelSwitchedDuringSession: boolean = false;
   private readonly maxSessionTurns: number;
   private readonly listExtensions: boolean;
@@ -258,6 +268,7 @@ export class Config {
     this.ideMode = params.ideMode ?? false;
     this.enableOpenAILogging = params.enableOpenAILogging ?? false;
     this.sampling_params = params.sampling_params;
+    this.systemPromptMappings = params.systemPromptMappings;
 
     if (params.contextFileName) {
       setGeminiMdFilename(params.contextFileName);
@@ -540,6 +551,16 @@ export class Config {
     return this.enableOpenAILogging;
   }
 
+  getSystemPromptMappings():
+    | Array<{
+        baseUrls?: string[];
+        modelNames?: string[];
+        template?: string;
+      }>
+    | undefined {
+    return this.systemPromptMappings;
+  }
+
   async refreshMemory(): Promise<{ memoryContent: string; fileCount: number }> {
     const { memoryContent, fileCount } = await loadServerHierarchicalMemory(
       this.getWorkingDir(),

packages/core/src/core/client.ts

@@ -238,7 +238,10 @@ export class GeminiClient {
     ];
     try {
       const userMemory = this.config.getUserMemory();
-      const systemInstruction = getCoreSystemPrompt(userMemory);
+      const systemPromptMappings = this.config.getSystemPromptMappings();
+      const systemInstruction = getCoreSystemPrompt(userMemory, {
+        systemPromptMappings,
+      });
       const generateContentConfigWithThinking = isThinkingSupported(
         this.config.getModel(),
       )
@@ -354,7 +357,10 @@ export class GeminiClient {
       model || this.config.getModel() || DEFAULT_GEMINI_FLASH_MODEL;
     try {
       const userMemory = this.config.getUserMemory();
-      const systemInstruction = getCoreSystemPrompt(userMemory);
+      const systemPromptMappings = this.config.getSystemPromptMappings();
+      const systemInstruction = getCoreSystemPrompt(userMemory, {
+        systemPromptMappings,
+      });
       const requestConfig = {
         abortSignal,
         ...this.generateContentConfig,
@@ -470,7 +476,10 @@ export class GeminiClient {
 
     try {
       const userMemory = this.config.getUserMemory();
-      const systemInstruction = getCoreSystemPrompt(userMemory);
+      const systemPromptMappings = this.config.getSystemPromptMappings();
+      const systemInstruction = getCoreSystemPrompt(userMemory, {
+        systemPromptMappings,
+      });
 
       const requestConfig = {
         abortSignal,

packages/core/src/core/prompts.ts

@@ -18,7 +18,20 @@ import process from 'node:process';
 import { isGitRepository } from '../utils/gitUtils.js';
 import { MemoryTool, GEMINI_CONFIG_DIR } from '../tools/memoryTool.js';
 
-export function getCoreSystemPrompt(userMemory?: string): string {
+export interface ModelTemplateMapping {
+  baseUrls?: string[];
+  modelNames?: string[];
+  template?: string;
+}
+
+export interface SystemPromptConfig {
+  systemPromptMappings?: ModelTemplateMapping[];
+}
+
+export function getCoreSystemPrompt(
+  userMemory?: string,
+  config?: SystemPromptConfig,
+): string {
   // if GEMINI_SYSTEM_MD is set (and not 0|false), override system prompt from file
   // default path is .qwen/system.md but can be modified via custom path in GEMINI_SYSTEM_MD
   let systemMdEnabled = false;
@@ -34,13 +47,49 @@ export function getCoreSystemPrompt(userMemory?: string): string {
       throw new Error(`missing system prompt file '${systemMdPath}'`);
     }
   }
-  if (
-    process.env.OPENAI_MODEL?.startsWith('qwen3') &&
-    process.env.OPENAI_BASE_URL?.includes('dashscope')
-  ) {
-    const sandbox =
-      process.env.SANDBOX === 'sandbox-exec' ? 'sandbox-exec' : '';
-    return `SYSTEM_TEMPLATE:{"name":"qwen3_coder","params":{"is_git_repository":${isGitRepository(process.cwd())},"sandbox":"${sandbox}"}}`;
+
+  // Check for system prompt mappings from global config
+  if (config?.systemPromptMappings) {
+    const currentModel = process.env.OPENAI_MODEL || '';
+    const currentBaseUrl = process.env.OPENAI_BASE_URL || '';
+
+    const matchedMapping = config.systemPromptMappings.find((mapping) => {
+      const { baseUrls, modelNames } = mapping;
+      // Check if baseUrl matches (when specified)
+      if (
+        baseUrls &&
+        modelNames &&
+        baseUrls.includes(currentBaseUrl) &&
+        modelNames.includes(currentModel)
+      ) {
+        return true;
+      }
+
+      if (baseUrls && baseUrls.includes(currentBaseUrl) && !modelNames) {
+        return true;
+      }
+      if (modelNames && modelNames.includes(currentModel) && !baseUrls) {
+        return true;
+      }
+
+      return false;
+    });
+
+    if (matchedMapping?.template) {
+      const sandbox =
+        process.env.SANDBOX === 'sandbox-exec' ? 'sandbox-exec' : '';
+      const isGitRepo = isGitRepository(process.cwd());
+
+      // Replace placeholders in template
+      let template = matchedMapping.template;
+      template = template.replace(
+        '{RUNTIME_VARS_IS_GIT_REPO}',
+        String(isGitRepo),
+      );
+      template = template.replace('{RUNTIME_VARS_SANDBOX}', sandbox);
+
+      return template;
+    }
   }
 
   const basePrompt = systemMdEnabled