feat: 集成 AI 对话与只读查询工具

apps/server/src/agent-tools/tools/get-dashboard-stats.tool.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@nestjs/common';
+import { DashboardService } from '../../dashboard/dashboard.service';
+import { AgentBusinessScopeFactory } from '../agent-business-scope.factory';
+import type { AgentToolContext, ToolDef, ToolInputResult } from '../agent-tool.types';
+import { rejectUnknownKeys } from './tool-input';
+
+@Injectable()
+export class GetDashboardStatsTool implements ToolDef<Record<string, never>> {
+  readonly name = 'get_dashboard_stats'; readonly requiredPermission = 'dashboard:view';
+  readonly description = '获取当前用户数据范围内的学生、班级和今日考勤概览。';
+  readonly inputSchema = { type: 'object', properties: {}, additionalProperties: false };
+  constructor(private readonly service: DashboardService, private readonly scopes: AgentBusinessScopeFactory) {}
+  validate(raw: Record<string, unknown>): ToolInputResult<Record<string, never>> {
+    const invalid = rejectUnknownKeys(raw, []); return invalid ?? { ok: true, value: {} };
+  }
+  execute(_input: Record<string, never>, context: AgentToolContext) {
+    return this.service.agentGetDashboardStats(context.userId, this.scopes.canManageAllDashboard(context));
+  }
+}