✨ feat: Add tag-based filtering & refactor filter counts logic

Overview:
• Introduced a new “Model Tag” filter across pricing screens
• Refactored `usePricingFilterCounts` to eliminate duplicated logic
• Improved tag handling to be case-insensitive and deduplicated
• Extended utilities to reset & persist the new filter

Details:
1. Added `filterTag` state to `useModelPricingData` and integrated it into all filtering paths.
2. Created reusable `PricingTags` component using `SelectableButtonGroup`.
3. Incorporated tag filter into `PricingSidebar` and mobile `PricingFilterModal`, including reset support.
4. Enhanced `resetPricingFilters` (helpers/utils) to restore tag filter defaults.
5. Refactored `usePricingFilterCounts.js`:
   • Centralized predicate `matchesFilters` to remove redundancy
   • Normalized tag parsing via `normalizeTags` helper
   • Memoized model subsets with concise filter calls
6. Updated lints – zero errors after refactor.

Result:
Users can now filter models by custom tags with consistent UX, and internal logic is cleaner, faster, and easier to extend.

web/src/i18n/locales/en.json

@@ -1876,6 +1876,7 @@
   "全部分组": "All groups",
   "全部类型": "All types",
   "全部端点": "All endpoints",
+  "全部标签": "All tags",
   "显示倍率": "Show ratio",
   "表格视图": "Table view",
   "模型的详细描述和基本特性": "Detailed description and basic characteristics of the model",
@@ -1914,5 +1915,6 @@
   "精确名称匹配": "Exact name matching",
   "前缀名称匹配": "Prefix name matching",
   "后缀名称匹配": "Suffix name matching",
-  "包含名称匹配": "Contains name matching"
+  "包含名称匹配": "Contains name matching",
+  "展开更多": "Expand more"
 }