feat(web): 增量自动刷新、结构区修复与默认指标/周期

自动刷新常态只拉 recent 尾部 K，每 1 分钟全量重算缠论；修复结构区缓存导入；默认指标/4h·1h·15m/近30天；同步 ECR-009 screener 相关改动。

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

web/tests/test_analyze_contract.py

@@ -64,11 +64,33 @@ def test_analyze_route_registered():
 
     rules = {r.rule for r in app.url_map.iter_rules()}
     assert "/api/analyze" in rules
+    assert "/api/klines/recent" in rules
     assert "/api/chart_metadata" in rules
     assert "/" in rules
     assert "/chan_tv" in rules
 
 
+def test_klines_recent_returns_tail_only():
+    from app import app
+
+    df = make_ohlcv(n=30)
+    # analyze 蓝图 star-import 后绑定在 api.analyze 命名空间
+    with patch("api.analyze.get_kl_data", return_value=df):
+        client = app.test_client()
+        resp = client.get(
+            "/api/klines/recent",
+            query_string={"symbol": "BTC/USDT:USDT", "timeframe": "5m", "limit": 2},
+        )
+    assert resp.status_code == 200
+    body = resp.get_json()
+    assert body.get("partial") is True
+    assert body.get("limit") == 2
+    assert isinstance(body.get("kline_data"), list)
+    assert len(body["kline_data"]) == 2
+    assert "bi_list" not in body
+    assert "wyckoff" not in body
+
+
 def test_contract_keys_stable():
     assert "bi_list" in CONTRACT_KEYS and "seg_list" in CONTRACT_KEYS
     for k in ("kline_data", "macd", "zs_list", "bsp_list", "chan_macd"):