feat: moodboard card reordering via drag handle

Grip handle (⠿) appears on hover, drag to reorder cards.
Separate from image repositioning (which uses direct mousedown on image).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/index.html

@@ -299,6 +299,11 @@ window.dispatchEvent(new Event('tiptap-loaded'));
   .mood-card-caption { padding: 8px 10px; font-size: 13px; color: var(--text); min-height: 32px; }
   .mood-card-remove { position: absolute; top: 4px; right: 4px; display: none; background: rgba(139,48,48,0.8); color: #fff; border: none; border-radius: 50%; width: 20px; height: 20px; font-size: 12px; cursor: pointer; align-items: center; justify-content: center; z-index: 2; }
   .mood-card:hover .mood-card-remove { display: flex; }
+  .mood-card-handle { position: absolute; top: 4px; left: 4px; display: none; background: rgba(0,0,0,0.5); color: #fff; border: none; border-radius: 4px; width: 22px; height: 22px; font-size: 14px; cursor: grab; align-items: center; justify-content: center; z-index: 2; user-select: none; }
+  .mood-card:hover .mood-card-handle { display: flex; }
+  .mood-card-handle:active { cursor: grabbing; }
+  .mood-card.drag-over { outline: 2px solid var(--accent); outline-offset: -2px; }
+  .mood-card.dragging-card { opacity: 0.4; }
   .mood-add { border: 1px dashed var(--border); background: transparent; display: flex; flex-direction: column; align-items: center; justify-content: center; cursor: pointer; min-height: 120px; border-radius: 10px; }
   .mood-add:hover { background: var(--bg-alt); }
   .mood-add-icon { font-size: 24px; color: var(--text-hint); }
@@ -1287,7 +1292,44 @@ function renderMoodboard() {
     removeBtn.innerHTML = '×';
     removeBtn.onclick = (e) => { e.stopPropagation(); removeMoodItem(i); };
 
+    // Drag handle for reordering
+    const handle = document.createElement('div');
+    handle.className = 'mood-card-handle';
+    handle.innerHTML = '⠿';
+    if (hasImg) {
+      card.draggable = false;
+      handle.addEventListener('mousedown', () => { card.draggable = true; });
+      window.addEventListener('mouseup', () => { card.draggable = false; });
+      card.addEventListener('dragstart', (e) => {
+        moodDragIndex = i;
+        card.classList.add('dragging-card');
+        e.dataTransfer.effectAllowed = 'move';
+      });
+      card.addEventListener('dragend', () => {
+        card.classList.remove('dragging-card');
+        card.draggable = false;
+        moodDragIndex = -1;
+        container.querySelectorAll('.mood-card').forEach(c => c.classList.remove('drag-over'));
+      });
+      card.addEventListener('dragover', (e) => {
+        e.preventDefault();
+        e.dataTransfer.dropEffect = 'move';
+        card.classList.add('drag-over');
+      });
+      card.addEventListener('dragleave', () => { card.classList.remove('drag-over'); });
+      card.addEventListener('drop', (e) => {
+        e.preventDefault();
+        card.classList.remove('drag-over');
+        if (moodDragIndex < 0 || moodDragIndex === i) return;
+        const moved = items.splice(moodDragIndex, 1)[0];
+        items.splice(i, 0, moved);
+        saveVisionSection('moodboard', JSON.stringify(items));
+        renderMoodboard();
+      });
+    }
+
     card.appendChild(removeBtn);
+    card.appendChild(handle);
     card.appendChild(imgDiv);
     card.appendChild(caption);
     container.appendChild(card);
@@ -1305,6 +1347,7 @@ function renderMoodboard() {
 }
 
 let moodUploadTarget = -1;
+let moodDragIndex = -1;
 document.addEventListener('DOMContentLoaded', () => {
   const moodInput = document.getElementById('mood-file-input');
   if (moodInput) moodInput.addEventListener('change', function() {