feat(i18n): integrate i18next for internationalization support and add initial translation setup

frontend/src/pages/OptimizerPage.tsx

@@ -625,10 +625,16 @@ const getMainStatLabel = (target: 'necklace' | 'ring' | 'boots', value: MainStat
         }
     }, [setPickerOpen]);
 
-    const resetFilters = () => {
+    const resetSetsAndAttrs = () => {
-        setStatFilters(emptyFilters);
         setSetFilters(emptySetFilters);
+        setStatFilters(emptyFilters);
         setMainStatFilters({necklace: 'All', ring: 'All', boots: 'All'});
+        setResults([]);
+        setSelectedResult(null);
+        setTotalCombos(0);
+    };
+
+    const resetPreferences = () => {
         setWeightValues({
             atk: 3,
             def: 3,
@@ -1000,18 +1006,21 @@ const getMainStatLabel = (target: 'necklace' | 'ring' | 'boots', value: MainStat
                                 </div>
                                 </div>
                             </div>
-                            <Button icon={<ReloadOutlined/>} onClick={loadLatestData} loading={loading}>
+                            <div style={{display: 'flex', gap: 8}}>
-                                重新加载数据
+                                <Button icon={<ReloadOutlined/>} onClick={loadLatestData} loading={loading}>
-                            </Button>
+                                    重新加载数据
+                                </Button>
+                                <Button icon={<ReloadOutlined/>} onClick={resetSetsAndAttrs}>
+                                    {'\u91cd\u7f6e\u5957\u88c5'}
+                                </Button>
+                                <Button icon={<FilterOutlined/>} onClick={resetPreferences}>
+                                    {'\u91cd\u7f6e\u504f\u597d'}
+                                </Button>
+                                <Button type="primary" icon={<AppstoreOutlined/>} onClick={buildResults}>
+                                    {'\u5f00\u59cb\u914d\u88c5'}
+                                </Button>
+                            </div>
                         </Col>
-                        <div style={{position: 'absolute', right: 24, bottom: 16, display: 'flex', gap: 8}}>
-                            <Button type="primary" icon={<AppstoreOutlined/>} onClick={buildResults}>
-                                开始配装
-                            </Button>
-                            <Button icon={<FilterOutlined/>} onClick={resetFilters}>
-                                重置筛选
-                            </Button>
-                        </div>
                     </Row>
                 </Card>