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/instance/instance_live_pnl_lib.py

@@ -1,4 +1,4 @@
-"""实例页：持仓未实现盈亏（实时盈亏）汇总。"""
+"""实例页:持仓未实现盈亏(实时盈亏)汇总."""
 from __future__ import annotations
 
 from collections.abc import Callable
@@ -8,7 +8,7 @@ from lib.hub.hub_position_metrics import parse_position_unrealized_pnl
 
 
 def position_row_contracts(pos: dict[str, Any]) -> float:
-    """持仓张数：与三所 app 内 _position_row_effective_contracts 规则一致。"""
+    """持仓张数:与三所 app 内 _position_row_effective_contracts 规则一致."""
     if not isinstance(pos, dict):
         return 0.0
     info = pos.get("info") or {}
@@ -67,7 +67,7 @@ def sum_unrealized_pnl_from_metrics(
     rows: list[dict[str, Any]] | list[Any],
     get_metrics_fn: Callable[[str, str], dict[str, Any] | None],
 ) -> float | None:
-    """按活跃监控单逐笔拉交易所 metrics 汇总（与持仓卡浮盈亏一致）。"""
+    """按活跃监控单逐笔拉交易所 metrics 汇总(与持仓卡浮盈亏一致)."""
     total = 0.0
     found = False
     for row in rows or []:
@@ -103,7 +103,7 @@ def resolve_instance_unrealized_pnl(
     active_rows: list[Any] | None,
     get_metrics_fn: Callable[[str, str], dict[str, Any] | None] | None,
 ) -> float | None:
-    """先全量持仓汇总，失败或无数据时回退到活跃监控单 metrics。"""
+    """先全量持仓汇总,失败或无数据时回退到活跃监控单 metrics."""
     total = fetch_unrealized_pnl(fetch_positions_fn)
     if total is not None:
         return total
@@ -113,7 +113,7 @@ def resolve_instance_unrealized_pnl(
 
 
 def merge_unrealized_pnl_components(*parts: float | None) -> float | None:
-    """合并永续与期权等多路未实现盈亏（任一路有值即参与合计）。"""
+    """合并永续与期权等多路未实现盈亏(任一路有值即参与合计)."""
     total = 0.0
     found = False
     for part in parts: