refactor: 将共用代码迁入 lib/ 模块化目录

统一 strategy、key_monitor、trade、hub 等共用库到 lib/ 子包，并补充 lib-structure 文档，便于四所与中控维护。

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

tests/test_trade_result_lib.py

@@ -1,30 +1,30 @@
-from trade_result_lib import normalize_result_with_pnl, normalize_display_result, is_winning_pnl
-
-
-def test_stop_loss_with_profit_becomes_trailing_tp():
-    assert normalize_result_with_pnl("止损", 4.33) == "移动止盈"
-
-
-def test_manual_close_unchanged_even_with_profit():
-    assert normalize_result_with_pnl("手动平仓", 10) == "手动平仓"
-
-
-def test_stop_loss_with_loss_unchanged():
-    assert normalize_result_with_pnl("止损", -2.5) == "止损"
-
-
-def test_take_profit_unchanged():
-    assert normalize_result_with_pnl("止盈", 5) == "止盈"
-
-
-def test_external_close_becomes_manual_close():
-    assert normalize_display_result("外部平仓") == "手动平仓"
-    assert normalize_result_with_pnl("外部平仓", 2.5) == "手动平仓"
-    assert normalize_result_with_pnl("外部平仓（自动同步）", -1) == "手动平仓"
-
-
-def test_winning_pnl_positive_only():
-    assert is_winning_pnl(2.96) is True
-    assert is_winning_pnl(0) is False
-    assert is_winning_pnl(-1.05) is False
-    assert is_winning_pnl(None) is False
+from lib.trade.trade_result_lib import normalize_result_with_pnl, normalize_display_result, is_winning_pnl
+
+
+def test_stop_loss_with_profit_becomes_trailing_tp():
+    assert normalize_result_with_pnl("止损", 4.33) == "移动止盈"
+
+
+def test_manual_close_unchanged_even_with_profit():
+    assert normalize_result_with_pnl("手动平仓", 10) == "手动平仓"
+
+
+def test_stop_loss_with_loss_unchanged():
+    assert normalize_result_with_pnl("止损", -2.5) == "止损"
+
+
+def test_take_profit_unchanged():
+    assert normalize_result_with_pnl("止盈", 5) == "止盈"
+
+
+def test_external_close_becomes_manual_close():
+    assert normalize_display_result("外部平仓") == "手动平仓"
+    assert normalize_result_with_pnl("外部平仓", 2.5) == "手动平仓"
+    assert normalize_result_with_pnl("外部平仓（自动同步）", -1) == "手动平仓"
+
+
+def test_winning_pnl_positive_only():
+    assert is_winning_pnl(2.96) is True
+    assert is_winning_pnl(0) is False
+    assert is_winning_pnl(-1.05) is False
+    assert is_winning_pnl(None) is False