feat(ai): 实现聊天记录预处理管道

- 新增 preprocessor 模块：数据清洗(XML卡片)、黑名单过滤、智能去噪、连续发言合并、数据脱敏
- 内置多国脱敏规则（中国手机号/身份证、美国SSN、日韩号码等）+ 自定义规则支持
- 工具层统一 wrapWithPreprocessing 包装，自动对 rawMessages 执行预处理+格式化
- 昵称匿名化：用 U{id} 替代真实昵称，跨工具调用一致
- SQL 查询补充 senderId/senderPlatformId
- PreprocessConfig 类型定义（preload + 主进程）

electron/main/ai/tools/definitions/get-conversation-between.ts

@@ -4,7 +4,7 @@ import type { ToolContext } from '../types'
 import { timeParamProperties } from '../utils/schemas'
 import * as workerManager from '../../../worker/workerManager'
 import { parseExtendedTimeParams } from '../utils/time-params'
-import { formatTimeRange, formatMessageCompact, t } from '../utils/format'
+import { formatTimeRange, t } from '../utils/format'
 
 const schema = Type.Object({
   member_id_1: Type.Number({ description: 'ai.tools.get_conversation_between.params.member_id_1' }),
@@ -51,7 +51,7 @@ export function createTool(context: ToolContext): AgentTool<typeof schema> {
         member1: result.member1Name,
         member2: result.member2Name,
         timeRange: formatTimeRange(effectiveTimeFilter, locale),
-        conversation: result.messages.map((m) => formatMessageCompact(m, locale)),
+        rawMessages: result.messages,
       }
 
       return {