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

locales/en.json

@@ -223,7 +223,11 @@
             "noCreditRequired": "No Credit Required",
             "allowSellingGeneratedContent": "Allow Selling",
             "noTags": "No tags",
-            "clearAll": "Clear All Filters"
+            "clearAll": "Clear All Filters",
+            "any": "Any",
+            "all": "All",
+            "tagLogicAny": "Match any tag (OR)",
+            "tagLogicAll": "Match all tags (AND)"
         },
         "theme": {
             "toggle": "Toggle theme",