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/hub_strategy_lib.py

@@ -1,4 +1,4 @@
-"""中控「策略说明」：读取 docs/strategy MD + checklists JSON。"""
+"""中控「策略说明」:读取 docs/strategy MD + checklists JSON."""
 
 from __future__ import annotations
 
@@ -47,7 +47,7 @@ def _md_path(exchange_key: str) -> Path:
 
 
 def _parse_version(md_text: str) -> str:
-    m = re.search(r">\s*\*\*状态\*\*[：:]\s*(v[\d.]+)", md_text)
+    m = re.search(r">\s*\*\*状态\*\*[::]\s*(v[\d.]+)", md_text)
     if m:
         return m.group(1)
     m = re.search(r"\|\s*v([\d.]+)\s*\|", md_text)
@@ -409,7 +409,7 @@ def build_print_html(exchange_key: str, part: str = "doc") -> str:
   <p class="doc-meta">{escape_html(label)} · {escape_html(version)} · 打印 {escape_html(now)}</p>
 </header>
 <div class="doc-body">{payload.get("strategy_html") or ""}</div>
-<footer class="doc-foot">文档：{escape_html(str(source))}{(" · " + escape_html(version)) if version else ""}</footer>
+<footer class="doc-foot">文档:{escape_html(str(source))}{(" · " + escape_html(version)) if version else ""}</footer>
 </article>"""
     else:
         raise KeyError(part)