feat(asl): Complete Deep Research V2.0 core development

Backend:
- Add SSE streaming client (unifuncsSseClient) replacing async polling
- Add paragraph-based reasoning parser with mergeConsecutiveThinking
- Add requirement expansion service (DeepSeek-V3 PICOS+MeSH)
- Add Word export service with Pandoc, inline hyperlinks, reference link expansion
- Add deep research V2 worker with 2s log flush and Chinese source prompt
- Add 5 curated data sources config (PubMed/ClinicalTrials/Cochrane/CNKI/MedJournals)
- Add 4 API endpoints (generate-requirement/tasks/task-status/export-word)
- Update Prisma schema with 6 new V2.0 fields on AslResearchTask
- Add DB migration for V2.0 fields
- Simplify ASL_DEEP_RESEARCH_EXPANSION prompt (remove strategy section)

Frontend:
- Add waterfall-flow DeepResearchPage (phase 0-4 progressive reveal)
- Add LandingView, SetupPanel, StrategyConfirm, AgentTerminal, ResultsView
- Add react-markdown + remark-gfm for report rendering
- Add custom link component showing visible URLs after references
- Add useDeepResearchTask polling hook
- Add deep research TypeScript types

Tests:
- Add E2E test, smoke test, and Chinese data source test scripts

Docs:
- Update ASL module status (v2.0 - core features complete)
- Update system status (v6.1 - ASL V2.0 milestone)
- Update Unifuncs DeepSearch API guide (v2.0 - SSE mode + Chinese source results)
- Update module auth specification (test script guidelines)
- Update V2.0 development plan

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-v2/src/modules/asl/api/index.ts

@@ -478,6 +478,56 @@ export async function getResearchTaskStatus(
   return request(`/research/tasks/${taskId}/status`);
 }
 
+// ==================== Deep Research V2.0 API ====================
+
+import type {
+  DataSourceConfig,
+  GenerateRequirementRequest,
+  GenerateRequirementResponse,
+  DeepResearchTask,
+} from '../types/deepResearch';
+
+/**
+ * 获取数据源配置列表
+ */
+export async function getDeepResearchDataSources(): Promise<ApiResponse<DataSourceConfig[]>> {
+  return request('/research/data-sources');
+}
+
+/**
+ * 需求扩写（PICOS + MeSH）
+ */
+export async function generateRequirement(
+  data: GenerateRequirementRequest
+): Promise<ApiResponse<GenerateRequirementResponse>> {
+  return request('/research/generate-requirement', {
+    method: 'POST',
+    body: JSON.stringify(data),
+  });
+}
+
+/**
+ * 启动异步执行
+ */
+export async function executeDeepResearchTask(
+  taskId: string,
+  confirmedRequirement: string
+): Promise<ApiResponse<void>> {
+  return request(`/research/tasks/${taskId}/execute`, {
+    method: 'PUT',
+    body: JSON.stringify({ confirmedRequirement }),
+  });
+}
+
+/**
+ * 获取 V2.0 任务详情（状态 + 日志 + 结果）
+ */
+export async function getDeepResearchTask(
+  taskId: string
+): Promise<ApiResponse<DeepResearchTask>> {
+  return request(`/research/tasks/${taskId}`);
+}
+
 // ==================== 统一导出API对象 ====================
 
 /**
@@ -525,7 +575,13 @@ export const aslApi = {
   // 健康检查
   healthCheck,
   
-  // 智能文献检索 (DeepSearch)
+  // 智能文献检索 (DeepSearch V1.x)
   createResearchTask,
   getResearchTaskStatus,
+
+  // Deep Research V2.0
+  getDeepResearchDataSources,
+  generateRequirement,
+  executeDeepResearchTask,
+  getDeepResearchTask,
 };