fix: improve error handling and type safety

- Replaced 'any' types with proper TypeScript types
- Improved error handling with instanceof checks
- Removed unused imports (calculateExpectedTeamScore)
- Updated error messages to be more descriptive
- Removed deprecated eslint.config.mjs file

src/components/MatchEditor.tsx

@@ -20,7 +20,7 @@ interface MatchData {
   table: string
 }
 
-export default function MatchEditor({ tournamentId, players, matches }: MatchEditorProps) {
+export default function MatchEditor({ tournamentId, players }: MatchEditorProps) {
   const [formData, setFormData] = useState<MatchData>({
     team1P1Id: null,
     team1P2Id: null,
@@ -120,7 +120,7 @@ export default function MatchEditor({ tournamentId, players, matches }: MatchEdi
       setTimeout(() => {
         window.location.reload()
       }, 1000)
-    } catch (err) {
+    } catch {
       setError("An error occurred. Please try again.")
       setIsLoading(false)
     }