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>

manual_trading_hub/static/plan.js

@@ -1,5 +1,5 @@
 /**
- * 开仓计划：新建 / 进行中 / 历史 / 胜率统计
+ * 开仓计划:新建 / 进行中 / 历史 / 胜率统计
  */
 (function () {
   const page = document.getElementById("page-plan");
@@ -217,7 +217,7 @@
           '<label class="plan-field plan-field-inline"><span>盈亏</span>' +
           '<input class="plan-close-pnl" data-id="' +
           esc(p.id) +
-          '" type="number" step="any" placeholder="U（可选）" value="' +
+          '" type="number" step="any" placeholder="U(可选)" value="' +
           (p.pnl_amount != null ? esc(p.pnl_amount) : "") +
           '" /></label>' +
           '<button type="button" class="primary plan-btn-archive" data-id="' +
@@ -584,7 +584,7 @@
         const id = t.getAttribute("data-id");
         if (!id) return;
         if (t.classList.contains("plan-btn-del")) {
-          if (!window.confirm("确定删除该进行中的计划？")) return;
+          if (!window.confirm("确定删除该进行中的计划?")) return;
           api("/api/entry-plans/" + id, { method: "DELETE" })
             .then(function () {
               toast("已删除");
@@ -609,12 +609,12 @@
           const schemeEl = card && card.querySelector('.plan-active-scheme[data-id="' + id + '"]');
           const result = resultEl && resultEl.value;
           if (!result) {
-            toast("请先选择结果（盈/亏）", true);
+            toast("请先选择结果(盈/亏)", true);
             return;
           }
           const scheme = schemeEl && schemeEl.value;
           if (!scheme) {
-            toast("请先选择入场方案（根据实际进场填写）", true);
+            toast("请先选择入场方案(根据实际进场填写)", true);
             return;
           }
           const payload = { result: result, entry_scheme: scheme };