diff --git a/frontend/editor-poc.html b/frontend/editor-poc.html
index d9614b6..13d17dd 100644
--- a/frontend/editor-poc.html
+++ b/frontend/editor-poc.html
@@ -491,6 +491,7 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
     if (!fileVault || !filePath) {
       // Demo mode
       ta.value = '# Demo Document\n\nType **/** for commands. Select text for formatting.\n\n## Features\n\n- Slash commands: type / at start of line\n- Bubble menu: select text\n- AI actions: use the sparkle button or slash /ai\n- Preview: click the eye button\n';
+      autoHeight();
       statFile.textContent = 'Demo mode';
       document.title = 'ObsiGate Forge — Demo';
       originalContent = ta.value;
@@ -506,6 +507,7 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
       })
       .then(function(data) {
         ta.value = data.raw || '';
+        autoHeight();
         originalContent = ta.value;
         // Extract title from first # heading or filename
         var title = filePath.split('/').pop().replace(/\.md$/, '');
@@ -1058,10 +1060,14 @@ body { font-family: var(--sans); background: var(--bg); color: var(--text); heig
 
   ta.addEventListener('input', function() {
     updateStats(); markDirty();
-    // Auto-height: grow textarea to fit content (no double scrollbar)
+    autoHeight();
+  });
+
+  // ---- Auto-height textarea ----
+  function autoHeight() {
     ta.style.height = 'auto';
     ta.style.height = ta.scrollHeight + 'px';
-  });
+  }
   ta.addEventListener('mouseup', function() { setTimeout(showBubble, 50); });
   // Bubble follows cursor on any selection change (keyboard too)
   document.addEventListener('selectionchange', function() {