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/exchange/okx_orders_lib.py

@@ -1,6 +1,6 @@
 """
-OKX 挂单聚合：普通委托 + 算法单（conditional / oco / trigger）。
-交易所 App「止盈止损」页多为 orders-algo-pending，仅 fetch_open_orders 默认拿不到。
+OKX 挂单聚合:普通委托 + 算法单(conditional / oco / trigger).
+交易所 App「止盈止损」页多为 orders-algo-pending,仅 fetch_open_orders 默认拿不到.
 """
 from __future__ import annotations
 
@@ -22,7 +22,7 @@ def _okx_algo_cancel_id(order_id: str) -> str:
 
 
 def _okx_order_needs_stop_cancel_param(order: dict) -> bool:
-    """OKX 条件/算法单撤单须 params.stop=True，否则 cancel_order 走普通单接口会静默失败。"""
+    """OKX 条件/算法单撤单须 params.stop=True,否则 cancel_order 走普通单接口会静默失败."""
     if not isinstance(order, dict):
         return False
     info = order.get("info") or {}
@@ -40,7 +40,7 @@ def _okx_order_needs_stop_cancel_param(order: dict) -> bool:
 
 
 def fetch_okx_all_open_orders(ex, exchange_symbol: str) -> list[dict]:
-    """合并 OKX 普通挂单与算法挂单（去重）。"""
+    """合并 OKX 普通挂单与算法挂单(去重)."""
     if not exchange_symbol:
         return []
     ex.load_markets()
@@ -80,8 +80,8 @@ def fetch_okx_all_open_orders(ex, exchange_symbol: str) -> list[dict]:
 
 def cancel_okx_all_open_orders(ex, exchange_symbol: str) -> int:
     """
-    撤销某合约全部挂单（普通 + 条件/算法）。
-    OKX 止盈止损在 orders-algo-pending，必须用 stop=True 才能撤掉。
+    撤销某合约全部挂单(普通 + 条件/算法).
+    OKX 止盈止损在 orders-algo-pending,必须用 stop=True 才能撤掉.
     """
     if not exchange_symbol:
         return 0