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/strategy/templates/order_focus_v2.html

@@ -25,9 +25,9 @@
             </div>
             <div class="row">
                 <a class="btn" href="/">返回首页</a>
-                <strong class="focus-title">实盘下单放大（100根K线）</strong><span class="exchange-tag">{{ exchange_display }}</span>
+                <strong class="focus-title">实盘下单放大(100根K线)</strong><span class="exchange-tag">{{ exchange_display }}</span>
             </div>
-            <div class="status">最近刷新：<span id="updated-at">--</span></div>
+            <div class="status">最近刷新:<span id="updated-at">--</span></div>
         </div>
         {% if orders %}
         <div class="row" style="margin-top:10px">
@@ -49,7 +49,7 @@
             <span id="load-status" class="status"></span>
         </div>
         {% else %}
-        <div class="empty">当前没有激活订单，无法展示放大K线。</div>
+        <div class="empty">当前没有激活订单,无法展示放大K线.</div>
         {% endif %}
     </div>