fix ena planner template selection and stream defaults; improve tts free text chunking

modules/ena-planner/ena-planner.html

@@ -558,11 +558,12 @@
       const sel = $('ep_tpl_select');
       sel.innerHTML = '<option value="">-- 选择模板 --</option>';
       const names = Object.keys(cfg?.promptTemplates || {});
+      const selectedName = names.includes(selected) ? selected : '';
       names.forEach(name => {
         const opt = document.createElement('option');
         opt.value = name;
         opt.textContent = name;
-        opt.selected = name === selected;
+        opt.selected = name === selectedName;
         sel.appendChild(opt);
       });
     }
@@ -675,7 +676,8 @@
 
       setBadge(toBool(cfg.enabled, true));
       updatePrefixModeUI();
-      renderTemplateSelect();
+      const keepSelectedTemplate = $('ep_tpl_select')?.value || '';
+      renderTemplateSelect(keepSelectedTemplate);
       renderPromptList();
       renderLogs();
     }
@@ -916,4 +918,4 @@
   </script>
 </body>
 
-</html>
+</html>