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/trade/compensating_close_lib.py

@@ -1,16 +1,16 @@
-"""开仓后挂 TP/SL 失败时的补偿平仓（避免裸仓）。"""
-from __future__ import annotations
-
-from typing import Callable
-
-
-def log_compensating_close_error(prefix: str, exc: BaseException) -> None:
-    print(f"[{prefix}] {exc}", flush=True)
-
-
-def run_compensating_close(close_fn: Callable[[], None], *, log_prefix: str = "compensating_close") -> None:
-    """执行补偿平仓；二次失败只打日志，不掩盖原始异常。"""
-    try:
-        close_fn()
-    except Exception as e:
-        log_compensating_close_error(log_prefix, e)
+"""开仓后挂 TP/SL 失败时的补偿平仓(避免裸仓)."""
+from __future__ import annotations
+
+from typing import Callable
+
+
+def log_compensating_close_error(prefix: str, exc: BaseException) -> None:
+    print(f"[{prefix}] {exc}", flush=True)
+
+
+def run_compensating_close(close_fn: Callable[[], None], *, log_prefix: str = "compensating_close") -> None:
+    """执行补偿平仓;二次失败只打日志,不掩盖原始异常."""
+    try:
+        close_fn()
+    except Exception as e:
+        log_compensating_close_error(log_prefix, e)