feat(llm): agent模型下拉返回个人选择selected标记

wwwroot/api/agent_model_options.dspy

@@ -1,8 +1,10 @@
 # agent_model_options.dspy - 返回 active 模型列表（供 AgentIO 模型选择下拉）
 # llm 表是 pipeline 库的通用配置，产线无关
 # org_id 多租户隔离：非系统级机构只看到本机构的模型（不含系统级兜底）
+# 返回每项带 selected 标记，标识个人之前选择的默认模型（default_llm_id）
 
 dbname = get_module_dbname('pipeline_core')
+uid = await get_user()
 org_id = (await get_userorgid()) or ''
 
 async with DBPools().sqlorContext(dbname) as sor:
@@ -14,6 +16,14 @@ async with DBPools().sqlorContext(dbname) as sor:
     sql += " ORDER BY name"
     recs = await sor.sqlExe(sql, params)
 
+    # 个人之前选择的默认模型
+    current_llm_id = ''
+    if uid:
+        _s = await sor.sqlExe(
+            "SELECT default_llm_id FROM pipeline_agent_settings WHERE user_id=${u}$", {"u": uid})
+        if _s:
+            current_llm_id = getattr(_s[0], 'default_llm_id', '') or ''
+
 rows = []
 for r in recs:
     rows.append({
@@ -22,6 +32,7 @@ for r in recs:
         'provider': r.provider,
         'model_id': r.model_id,
         'capabilities': r.capabilities or 'text',
+        'selected': r.id == current_llm_id,
     })
 
 return rows