refactor(ai-chat): 移除 excel_analyze/office_analyze 工具与 OfficeKit 依赖

- 删除 excel_analyze/office_analyze 两个 A2UI 工具（schema、分发、执行器、测试）
- 附件分析改为依赖上传时自动提取的文本与 preflight_import 报告 errorSamples
- 移除 @officecli/officecli 依赖及 OfficeCliService（PPT 上传不再自动提取文本）
- 保留 AiExcelReaderService（附件文本提取与导入预检仍使用）

apps/server/src/ai-chat/ai-chat.tool-actions.ts

@@ -10,7 +10,6 @@ import {
 import type { AiChatServiceContext, AiSseEmitter, ModelToolCall } from './ai-chat.types';
 import type { AgentToolContext } from './ai-chat.tools';
 import { finishToolRun, startToolRun } from './ai-chat.tools';
-export { executeOfficeAnalyze, buildOfficeCliArgs } from './ai-chat.tool-office';
 
 function isExcelAttachment(attachment: {
   mimeType: string;
@@ -93,81 +92,6 @@ export async function executePreflightImport(
   }
 }
 
-export async function executeExcelAnalyze(
-  context: AiChatServiceContext,
-  messageId: number,
-  call: ModelToolCall,
-  userId: number,
-  emit: AiSseEmitter,
-): Promise<string> {
-  const { run, parsedArgs, startedAt } = await startToolRun(context, messageId, call, emit, {
-    toolName: 'excel_analyze',
-    skillKey: null,
-    argumentsData: null,
-  });
-
-  try {
-    const parsedRecord =
-      parsedArgs && typeof parsedArgs === 'object' && !Array.isArray(parsedArgs)
-        ? (parsedArgs as Record<string, unknown>)
-        : {};
-    const attachmentId =
-      typeof parsedRecord.attachmentId === 'number' ? parsedRecord.attachmentId : undefined;
-    if (!Number.isInteger(attachmentId) || (attachmentId as number) <= 0) {
-      throw new Error('缺少附件 attachmentId');
-    }
-    const action = typeof parsedRecord.action === 'string' ? parsedRecord.action : '';
-    if (action !== 'overview' && action !== 'rows') {
-      throw new Error('action 只能是 overview 或 rows');
-    }
-    const [attachment] = await context.attachmentService.requireReadyOwned(userId, [
-      attachmentId as number,
-    ]);
-    if (!isExcelAttachment(attachment)) {
-      throw new Error('附件不是 Excel 文件，无法解析');
-    }
-    if (!context.excelReader) throw new Error('Excel 解析器未配置');
-    const buffer = await context.attachmentService.readStoredBuffer(attachment);
-
-    let data: unknown;
-    let summary: string;
-    if (action === 'overview') {
-      const overview = await context.excelReader.overview(buffer);
-      data = { sheets: overview.sheets, text: overview.text };
-      summary = `已解析 ${overview.sheets.length} 个工作表`;
-    } else {
-      const sheet = typeof parsedRecord.sheet === 'string' ? parsedRecord.sheet : undefined;
-      const startRow = Number(parsedRecord.startRow ?? 1);
-      const maxRows = Number(parsedRecord.maxRows ?? 20);
-      const maxColumns = Number(parsedRecord.maxColumns ?? 30);
-      if (!Number.isInteger(startRow) || startRow < 1) throw new Error('startRow 必须是 >=1 的整数');
-      if (!Number.isInteger(maxRows) || maxRows < 1) {
-        throw new Error('maxRows 必须是 >=1 的整数');
-      }
-      if (!Number.isInteger(maxColumns) || maxColumns < 1) {
-        throw new Error('maxColumns 必须是 >=1 的整数');
-      }
-      data = await context.excelReader.readRows(buffer, sheet, startRow, maxRows, maxColumns);
-      summary = `已读取工作表「${(data as { sheet: string }).sheet}」${(data as { rows: unknown[] }).rows.length} 行`;
-    }
-
-    await finishToolRun(context, run, call, startedAt, {
-      status: 'success',
-      summary,
-    }, emit);
-    return JSON.stringify({ status: 'success', data });
-  } catch (error) {
-    const summary =
-      error instanceof Error ? error.message.slice(0, 100) : 'Excel 解析失败';
-    await finishToolRun(context, run, call, startedAt, {
-      status: 'failed',
-      summary,
-      error: summary,
-    }, emit);
-    return JSON.stringify({ status: 'failed', error: run.resultSummary });
-  }
-}
-
 export async function executeStartImportWizard(
   context: AiChatServiceContext,
   messageId: number,