Normalize fullwidth punctuation to ASCII across codebase.

Add scripts/normalize_ambiguous_unicode.py; fix corrupted patch_instance_theme_templates.py. Preserves curly quotes in string literals; removes Git homoglyph warnings on .env.example.

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

lib/strategy/strategy_trend_exchange.py

@@ -1,4 +1,4 @@
-"""趋势回调：各交易所止损刷新、市价加/平仓（通过 app 模块能力探测）。"""
+"""趋势回调:各交易所止损刷新,市价加/平仓(通过 app 模块能力探测)."""
 from __future__ import annotations
 
 import time
@@ -76,7 +76,7 @@ def trend_market_close(cfg: dict, exchange_symbol: str, direction: str, pos_qty:
 
 
 def trend_replace_tpsl(cfg: dict, order_row: dict, stop_loss: float, take_profit: float) -> None:
-    """趋势保本移交：先撤条件单再挂保本止损 + 计划止盈（与下单监控一致）。"""
+    """趋势保本移交:先撤条件单再挂保本止损 + 计划止盈(与下单监控一致)."""
     m = _m(cfg)
     fn = getattr(m, "replace_active_monitor_tpsl_on_exchange", None)
     if not callable(fn):