feat: 大量优化和bug修复

server/api/search.ts

@@ -22,6 +22,7 @@ import { prisma } from "~~/server/utils/db";
 import { createApiLogger, toSafeLogError } from "~~/server/utils/logging";
 import { askAnswerStream } from "~~/server/utils/openai";
 import { addQaRecord, lookupCachedAnswer } from "~~/server/utils/runtimeState";
+import { getUserEffectiveApiConfig } from "~~/server/utils/sysConfig";
 
 /**
  * 把 query/body/form 中的值统一转成字符串
@@ -166,6 +167,10 @@ export default defineEventHandler(async (event) => {
       return createOcsErrorResponse("请先登录或提供有效 token");
     }
 
+    // 读取用户生效配置：如果用户开启了自定义 API 且完整填写，则使用自定义 base+key
+    // 否则完全回退到系统配置，保证系统 key 不流向用户自定义的 endpoint
+    const effectiveCfg = await getUserEffectiveApiConfig(userId);
+
     logger.info("read_question", {
       questionLength: params.title.length,
       type: params.type,
@@ -196,7 +201,8 @@ export default defineEventHandler(async (event) => {
     );
     const streamResult = await askAnswerStream({
       prompt,
-      systemPrompt: ANSWER_SYSTEM_PROMPT
+      systemPrompt: ANSWER_SYSTEM_PROMPT,
+      cfg: effectiveCfg
     });
     const processedAnswer = extractAnswer(streamResult.answer, params.type);