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

modules/tts/tts-text.js

@@ -218,13 +218,53 @@ function splitTextForFree(text, maxLength = FREE_MAX_TEXT) {
     const chunks = [];
     const paragraphs = String(text || '').split(/\n\s*\n/).map(s => s.replace(/\n+/g, '\n').trim()).filter(Boolean);
 
+    let current = '';
+    const pushCurrent = () => {
+        if (!current) return;
+        chunks.push(current);
+        current = '';
+    };
+
     for (const para of paragraphs) {
-        if (para.length <= maxLength) {
-            chunks.push(para);
+        if (!para) continue;
+
+        if (para.length > maxLength) {
+            // Flush buffered short paragraphs before handling a long paragraph.
+            pushCurrent();
+            const longParts = splitLongTextBySentence(para, maxLength);
+            for (const part of longParts) {
+                const t = String(part || '').trim();
+                if (!t) continue;
+                if (!current) {
+                    current = t;
+                    continue;
+                }
+                if (current.length + t.length + 2 <= maxLength) {
+                    current += `\n\n${t}`;
+                    continue;
+                }
+                pushCurrent();
+                current = t;
+            }
             continue;
         }
-        chunks.push(...splitLongTextBySentence(para, maxLength));
+
+        if (!current) {
+            current = para;
+            continue;
+        }
+
+        // Cross-paragraph merge: keep fewer requests while preserving paragraph boundary.
+        if (current.length + para.length + 2 <= maxLength) {
+            current += `\n\n${para}`;
+            continue;
+        }
+
+        pushCurrent();
+        current = para;
     }
+
+    pushCurrent();
     return chunks;
 }