fix: resolve ESLint errors in login and settings pages (CI failure)

- login/page.tsx: remove unused _setUser binding and useAuthStore import
- login/page.tsx: replace unused _err catch binding with bare catch {}
- settings/page.tsx: remove useEffect calling setProfileForm synchronously
  (react-hooks/set-state-in-effect error); form already initialised from
  user in useState so the effect was redundant
- npm run lint now exits 0 with no errors or warnings

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
Agent-Logs-Url: https://github.com/christianlouis/pop_puller_to_gmail/sessions/5140cd73-e2f0-41a8-ad3e-267d82d3700b

frontend/src/app/login/page.tsx

@@ -4,11 +4,9 @@ import { useState } from 'react';
 import { useRouter } from 'next/navigation';
 import Link from 'next/link';
 import { authApi } from '@/lib/api';
-import { useAuthStore } from '@/store/authStore';
 
 export default function LoginPage() {
   const router = useRouter();
-  const _setUser = useAuthStore((state) => state.setUser);
   const [email, setEmail] = useState('');
   const [password, setPassword] = useState('');
   const [error, setError] = useState('');
@@ -38,7 +36,7 @@ export default function LoginPage() {
       const redirectUri = `${window.location.origin}/auth/callback`;
       const authUrl = await authApi.getGoogleAuthUrl(redirectUri);
       window.location.href = authUrl;
-    } catch (_err: unknown) {
+    } catch {
       setError('Failed to initialize Google login');
     }
   };

frontend/src/app/settings/page.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
 import { AuthGuard } from '@/components/AuthGuard';
 import { DashboardLayout } from '@/components/DashboardLayout';
@@ -35,16 +35,6 @@ function SettingsContent() {
     initialData: user ?? undefined,
   });
 
-  // Sync form when server data arrives
-  useEffect(() => {
-    if (currentUser) {
-      setProfileForm({
-        full_name: currentUser.full_name || '',
-        email: currentUser.email || '',
-      });
-    }
-  }, [currentUser]);
-
   const updateProfileMutation = useMutation({
     mutationFn: (data: { full_name: string; email: string }) =>
       userApi.updateProfile(data),