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/common/static/instance_settings_prefs.js

@@ -1,5 +1,5 @@
 /**
- * 实例：导航显示、env 配置、改密、PM2 重启。
+ * 实例:导航显示,env 配置,改密,PM2 重启.
  */
 (function (global) {
   const DISPLAY = () => global.__INSTANCE_DISPLAY__ || {};
@@ -135,7 +135,7 @@
         body: JSON.stringify({ display }),
       });
       applyDisplayToNav(data.display || display);
-      setStatus(status, "已保存，导航已更新");
+      setStatus(status, "已保存,导航已更新");
     } catch (e) {
       setStatus(status, e.message || "保存失败", true);
     }
@@ -194,7 +194,7 @@
           cur.appendChild(masked);
           row.appendChild(cur);
         }
-        input.placeholder = field.has_value ? "修改时填写新值，留空不修改" : "请输入";
+        input.placeholder = field.has_value ? "修改时填写新值,留空不修改" : "请输入";
       } else {
         input.type = "text";
         input.value = field.current || field.default || "";
@@ -239,7 +239,7 @@
       if (group.has_restart) {
         const hint = document.createElement("p");
         hint.className = "env-panel-hint";
-        hint.textContent = "本组含需重启项，修改后请点「保存并重启」。";
+        hint.textContent = "本组含需重启项,修改后请点「保存并重启」.";
         panel.appendChild(hint);
       }
       const grid = document.createElement("div");
@@ -303,12 +303,12 @@
       });
       const needRestart = restartAfter || data.restart_required;
       if (needRestart) {
-        setStatus(status, "已保存，正在重启实例…");
+        setStatus(status, "已保存,正在重启实例…");
         await restartInstance();
         setStatus(status, "保存并重启完成");
         await loadEnvConfig();
       } else {
-        setStatus(status, "已保存（即时生效项已应用）");
+        setStatus(status, "已保存(即时生效项已应用)");
         await loadEnvConfig();
       }
     } catch (e) {
@@ -344,9 +344,9 @@
         body: JSON.stringify(body),
       });
       if (data.restart_required) {
-        setStatus(status, "密码已保存，正在重启…");
+        setStatus(status, "密码已保存,正在重启…");
         await restartInstance();
-        setStatus(status, "密码已更新，请用新密码登录");
+        setStatus(status, "密码已更新,请用新密码登录");
       } else {
         setStatus(status, "密码已更新");
       }