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/hub/price_snapshot_lib.py

@@ -1,4 +1,4 @@
-"""price_snapshot 共用：订单行情价兜底，避免 get_price 失败时整单不入 order_prices。"""
+"""price_snapshot 共用:订单行情价兜底,避免 get_price 失败时整单不入 order_prices."""
 from __future__ import annotations
 
 from typing import Any, Callable, Mapping, Optional, Sequence
@@ -17,10 +17,10 @@ def resolve_order_snapshot_price(
     fallback_entry: float | None = None,
 ) -> float | None:
     """
-    解析下单监控轮询用的现价/标记价，优先级：
+    解析下单监控轮询用的现价/标记价,优先级:
     1. 已批量拉取的 ticker last
-    2. get_symbol_mark_price（含 mark）
-    3. 交易所持仓 mark（parse_ccxt_position_metrics / parse_position_mark_price）
+    2. get_symbol_mark_price(含 mark)
+    3. 交易所持仓 mark(parse_ccxt_position_metrics / parse_position_mark_price)
     4. 计划成交价 trigger_price
     """
     sym = (symbol or "").strip()
@@ -82,7 +82,7 @@ def seed_prices_from_positions(
     *,
     resolve_ex_sym_fn: Callable[[Any], str],
 ) -> None:
-    """用持仓标记价补全 prices 字典（symbol 与 order_monitors 行对齐）。"""
+    """用持仓标记价补全 prices 字典(symbol 与 order_monitors 行对齐)."""
     if not all_positions or not order_rows:
         return
     try: