feat(filter): add tag logic toggle (OR/AND) for include tags filtering

Add a segmented toggle in the Filter Panel to switch between 'Any' (OR)
and 'All' (AND) logic when filtering by multiple include tags.

Changes:
- Backend: Add tag_logic field to FilterCriteria and ModelFilterSet
- Backend: Parse tag_logic parameter in model handlers
- Frontend: Add segmented toggle UI in filter panel header
- Frontend: Add interaction logic and state management for tag logic
- Add translations for all supported languages
- Add comprehensive tests for the new feature

Closes #802

static/css/components/search-filter.css

@@ -673,6 +673,57 @@
 
 
 
+/* Tag Logic Toggle Styles */
+.filter-section-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 8px;
+}
+
+.filter-section-header h4 {
+    margin: 0;
+}
+
+.tag-logic-toggle {
+    display: flex;
+    background-color: var(--lora-surface);
+    border: 1px solid var(--border-color);
+    border-radius: var(--border-radius-sm);
+    overflow: hidden;
+}
+
+.tag-logic-option {
+    background: none;
+    border: none;
+    padding: 2px 8px;
+    font-size: 11px;
+    cursor: pointer;
+    color: var(--text-color);
+    opacity: 0.7;
+    transition: all 0.2s ease;
+    font-weight: 500;
+}
+
+.tag-logic-option:hover {
+    opacity: 1;
+    background-color: var(--lora-surface-hover);
+}
+
+.tag-logic-option.active {
+    background-color: var(--lora-accent);
+    color: white;
+    opacity: 1;
+}
+
+.tag-logic-option:first-child {
+    border-right: 1px solid var(--border-color);
+}
+
+.tag-logic-option.active:first-child {
+    border-right: 1px solid rgba(255, 255, 255, 0.3);
+}
+
 /* Mobile adjustments */
 @media (max-width: 768px) {
     .search-options-panel,