Add client-side spell column sorting and improve inventory search

- Implement client-side sorting for all columns including spell_names
- Add computed_spell_names CTE for server-side sort fallback
- Add resizable columns with localStorage persistence
- Add Cloak slot detection by name pattern
- Increase items limit to 50000 for full inventory loading
- Increase proxy timeout to 60s for large queries
- Remove pagination (all items loaded at once for sorting)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/inventory.html

@@ -265,6 +265,7 @@
             border-collapse: collapse;
             font-size: 10px;
             color: #000;
+            table-layout: fixed;
         }
 
         .results-table th {
@@ -276,11 +277,36 @@
             position: sticky;
             top: 0;
             font-size: 9px;
+            position: relative;
+            user-select: none;
+        }
+
+        /* Resizable column handle */
+        .results-table th .resize-handle {
+            position: absolute;
+            right: 0;
+            top: 0;
+            bottom: 0;
+            width: 5px;
+            cursor: col-resize;
+            background: transparent;
+        }
+
+        .results-table th .resize-handle:hover,
+        .results-table th .resize-handle.resizing {
+            background: #666;
+        }
+
+        .results-table th.resizing {
+            background: #b0b0b0;
         }
 
         .results-table td {
             padding: 1px 3px;
             border: 1px solid #ddd;
+            overflow: hidden;
+            text-overflow: ellipsis;
+            white-space: nowrap;
         }
 
         .results-table tbody tr:hover {
@@ -542,6 +568,9 @@
                             <option value="Right Wrist">Right Wrist</option>
                             <option value="Trinket">Trinket</option>
                         </optgroup>
+                        <optgroup label="Other Slots">
+                            <option value="Cloak">Cloak</option>
+                        </optgroup>
                     </select>
                 </div>
             </div>
@@ -944,6 +973,10 @@
                         <input type="checkbox" id="slot_trinket" value="Trinket">
                         <label for="slot_trinket">Trinket</label>
                     </div>
+                    <div class="checkbox-item">
+                        <input type="checkbox" id="slot_cloak" value="Cloak">
+                        <label for="slot_cloak">Cloak</label>
+                    </div>
                 </div>
                 </div>
             </div>