feat: AI市场分析功能

- 后端：AI分析服务、工具调用、定时任务
- 前端：报告列表、详情页、Mermaid图表支持
- 支持OpenAI API兼容模型
- 收盘后自动分析生成报告

src/lib/ai-analysis-api.ts

@@ -0,0 +1,59 @@
+// AI 分析报告 API 客户端
+
+import { getApiBaseUrl } from "./api-client";
+
+const API_BASE = getApiBaseUrl();
+
+export interface AiReport {
+  id: number;
+  trade_date: string;
+  report_type: string;
+  title: string;
+  content: string;
+  summary: string | null;
+  toolsUsed: string[];
+  model: string;
+  tokens_used: number;
+  created_at: string;
+}
+
+export async function fetchAiReports(): Promise<AiReport[]> {
+  const resp = await fetch(`${API_BASE}/api/ai-analysis`);
+  if (!resp.ok) throw new Error(`请求失败 (${resp.status})`);
+  const result = await resp.json();
+  return result.data || [];
+}
+
+export async function fetchAiReport(id: number): Promise<AiReport> {
+  const resp = await fetch(`${API_BASE}/api/ai-analysis/${id}`);
+  if (!resp.ok) throw new Error(`请求失败 (${resp.status})`);
+  const result = await resp.json();
+  return result.data;
+}
+
+export async function checkAiReport(tradeDate: string): Promise<boolean> {
+  const resp = await fetch(`${API_BASE}/api/ai-analysis/check/${tradeDate}`);
+  if (!resp.ok) return false;
+  const result = await resp.json();
+  return result.data?.hasReport || false;
+}
+
+export async function triggerAiAnalysis(): Promise<{ id: number; tokens_used: number }> {
+  const resp = await fetch(`${API_BASE}/api/ai-analysis/trigger`, { method: "POST" });
+  if (!resp.ok) {
+    const err = await resp.json().catch(() => ({}));
+    throw new Error(err.detail || "触发失败");
+  }
+  const result = await resp.json();
+  return result.data;
+}
+
+export async function regenerateAiReport(id: number): Promise<{ id: number; tokens_used: number }> {
+  const resp = await fetch(`${API_BASE}/api/ai-analysis/${id}/regenerate`, { method: "POST" });
+  if (!resp.ok) {
+    const err = await resp.json().catch(() => ({}));
+    throw new Error(err.detail || "重新生成失败");
+  }
+  const result = await resp.json();
+  return result.data;
+}