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/rule/provider-button.tsx

@@ -14,7 +14,6 @@ import {
   Divider,
   alpha,
   styled,
-  useTheme,
 } from "@mui/material";
 import { useTranslation } from "react-i18next";
 import { useLockFn } from "ahooks";
@@ -47,7 +46,6 @@ const TypeBox = styled(Box)<{ component?: React.ElementType }>(({ theme }) => ({
 
 export const ProviderButton = () => {
   const { t } = useTranslation();
-  const theme = useTheme();
   const [open, setOpen] = useState(false);
   const { ruleProviders, refreshRules, refreshRuleProviders } = useAppData();
   const [updating, setUpdating] = useState<Record<string, boolean>>({});