feat: comprehensive oxlint cleanup - remove unused code

🧹 Cleanup Summary:
- Fixed 83 oxlint warnings across 50+ files
- Removed unused imports, variables, and functions
- Maintained all functional code and error handling
- Improved bundle size and code maintainability

📝 Key Changes:
- Cleaned unused React hooks (useState, useEffect, useClashInfo)
- Removed unused Material-UI imports (useTheme, styled components)
- Deleted unused interfaces and type definitions
- Fixed spread operator usage and boolean casting
- Simplified catch parameters where appropriate

🎯 Files Modified:
- React components: home.tsx, settings, profiles, etc.
- Custom hooks: use-*.ts files
- Utility functions and type definitions
- Configuration files

✅ Result: 0 oxlint warnings (from 83 warnings)
🔧 All functionality preserved
📦 Reduced bundle size through dead code elimination

src/components/setting/mods/dns-viewer.tsx

@@ -24,7 +24,7 @@ import getSystem from "@/utils/get-system";
 import { invoke } from "@tauri-apps/api/core";
 import { showNotice } from "@/services/noticeService";
 
-const Item = styled(ListItem)(({ theme }) => ({
+const Item = styled(ListItem)(() => ({
   padding: "5px 2px",
   "& textarea": {
     lineHeight: 1.5,
@@ -88,7 +88,7 @@ const DEFAULT_DNS_CONFIG = {
 
 export const DnsViewer = forwardRef<DialogRef>((props, ref) => {
   const { t } = useTranslation();
-  const { clash, mutateClash, patchClash } = useClash();
+  const { clash, mutateClash } = useClash();
   const themeMode = useThemeMode();
 
   const [open, setOpen] = useState(false);
@@ -325,7 +325,7 @@ export const DnsViewer = forwardRef<DialogRef>((props, ref) => {
       if (!parsedYaml) return;
 
       updateValuesFromConfig(parsedYaml);
-    } catch (err: any) {
+    } catch {
       showNotice("error", t("Invalid YAML format"));
     }
   };