changes to series order system. add artist retagging tool

app/templates/_gallery_modal.html

@@ -12,6 +12,7 @@
       </div>
 
       <div id="modalTagEditor" class="tag-editor" data-image-id="">
+        <!-- Shown when image IS in a series -->
         <div id="modalSeriesInfo" class="modal-series-info" style="display: none;">
           <div class="series-info-row">
             <span class="series-info-label">📚 Page</span>
@@ -22,6 +23,20 @@
             <span id="pageUpdateStatus" class="page-update-status"></span>
           </div>
         </div>
+        <!-- Shown when image is NOT in a series -->
+        <div id="modalAddToSeries" class="modal-add-to-series" style="display: none;">
+          <div class="add-series-header">
+            <span class="series-info-label">📚 Add to Series</span>
+          </div>
+          <div class="add-series-controls">
+            <select id="seriesSelect" class="series-select">
+              <option value="">Select series...</option>
+            </select>
+            <input type="number" id="addSeriesPageNumber" min="1" value="1" class="series-page-input" placeholder="#">
+            <button id="addToSeriesBtn" class="btn-small" disabled>Add</button>
+          </div>
+          <span id="addToSeriesStatus" class="page-update-status"></span>
+        </div>
         <div id="modalTagList" class="tags"></div>
         <form id="modalTagForm" class="tag-form" autocomplete="off">
           <div class="tag-form-wrapper">

app/templates/settings.html

@@ -55,6 +55,7 @@
           <button id="retryFailedBtn" class="btn warning-btn">Retry Failed Tasks</button>
           <button id="clearCompletedBtn" class="btn secondary-btn">Clear Completed</button>
           <button id="regenMissingThumbsBtn" class="btn secondary-btn">Regenerate Missing Thumbnails</button>
+          <button id="reapplyArtistTagsBtn" class="btn secondary-btn">Reapply Artist Tags from Paths</button>
         </div>
 
         <div id="celeryWorkerInfo" style="margin-top: 1rem;">
@@ -733,6 +734,34 @@ document.addEventListener('DOMContentLoaded', () => {
     }
   });
 
+  // Reapply Artist Tags from Paths
+  document.getElementById('reapplyArtistTagsBtn').addEventListener('click', async () => {
+    const btn = document.getElementById('reapplyArtistTagsBtn');
+
+    if (!confirm('This will re-apply artist tags to all images based on their file paths. Continue?')) {
+      return;
+    }
+
+    btn.disabled = true;
+    btn.textContent = 'Processing...';
+
+    try {
+      const r = await fetch('/api/reapply-artist-tags', { method: 'POST' });
+      const data = await r.json();
+
+      if (data.ok) {
+        alert(`Artist tags reapplied!\n\nUpdated: ${data.updated}\nSkipped: ${data.skipped}\nTotal images: ${data.total}`);
+      } else {
+        alert('Failed: ' + (data.error || 'Unknown error'));
+      }
+    } catch (e) {
+      alert('Failed: ' + e.message);
+    } finally {
+      btn.disabled = false;
+      btn.textContent = 'Reapply Artist Tags from Paths';
+    }
+  });
+
   // Load import settings
   fetch('/api/import-settings')
     .then(r => r.json())