feat: AI 自然语言选股（GLM）+ 全市场数据管道 + 远程 PostgreSQL

- 首页双入口（智能选股/策略回测）：引入 vue-router，顶部导航
- 智能选股：自然语言 -> LLM 解析结构化条件（智谱 GLM，OpenAI 兼容，/v4 兼容）-> SQL 快照预筛 + pandas 指标过滤（复用 indicators 单一事实源）
- 条件模型：指标 vs 常数/指标（value_indicator，如 DIF>DEA、close<布林下轨）、lookback+match 表达连续N天/近N天任一天、市值/PE/PB/换手率快照条件、默认排除 ST/退市/北交所
- 全市场数据同步：按 trade_date 批量拉取未复权日线（与回测 candles qfq 隔离），交易日历/股票列表本地缓存，daily_basic 仅最新截面，Tushare 限频兜底（分钟级重试/小时级降级）
- 存储：DATABASE_URL 切远程 PostgreSQL（cirry.cn/stock），本地 SQLite 已移除
- .env 入库（私有仓库）；smoke_test 扩展选股链路

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/stores/screener.ts

@@ -0,0 +1,70 @@
+import { defineStore } from 'pinia';
+import { ref } from 'vue';
+import { getScreenerSyncStatus, runScreener, startScreenerSync } from '@/api/client';
+import type { ScreenerRunResponse, ScreenerSyncStatus } from '@/api/types';
+
+export const useScreenerStore = defineStore('screener', () => {
+  const loading = ref(false);
+  const stage = ref<'idle' | 'parsing' | 'screening'>('idle');
+  const note = ref<string | null>(null);
+  const error = ref<string | null>(null);
+  const result = ref<ScreenerRunResponse | null>(null);
+  const syncStatus = ref<ScreenerSyncStatus | null>(null);
+  let pollTimer: ReturnType<typeof setInterval> | null = null;
+
+  async function run(text: string) {
+    loading.value = true;
+    error.value = null;
+    result.value = null;
+    note.value = 'AI 解析条件中…';
+    stage.value = 'parsing';
+    try {
+      // 条件解析与全市场筛选在后端一气呵成；切到筛选阶段给个过渡提示
+      setTimeout(() => {
+        if (loading.value && stage.value === 'parsing') {
+          stage.value = 'screening';
+          note.value = '全市场筛选中…';
+        }
+      }, 1200);
+      result.value = await runScreener({ text });
+    } catch (e) {
+      error.value = e instanceof Error ? e.message : '选股失败';
+    } finally {
+      loading.value = false;
+      stage.value = 'idle';
+      note.value = null;
+    }
+  }
+
+  async function fetchStatus() {
+    try {
+      syncStatus.value = await getScreenerSyncStatus();
+    } catch {
+      /* 静默：状态拉取失败不阻塞页面 */
+    }
+  }
+
+  function stopPolling() {
+    if (pollTimer) {
+      clearInterval(pollTimer);
+      pollTimer = null;
+    }
+  }
+
+  async function startSync(days = 90) {
+    error.value = null;
+    try {
+      await startScreenerSync({ days });
+      await fetchStatus();
+      stopPolling();
+      pollTimer = setInterval(async () => {
+        await fetchStatus();
+        if (syncStatus.value && !syncStatus.value.running) stopPolling();
+      }, 2000);
+    } catch (e) {
+      error.value = e instanceof Error ? e.message : '启动同步失败';
+    }
+  }
+
+  return { loading, stage, note, error, result, syncStatus, run, fetchStatus, startSync, stopPolling };
+});