feat(app): implement EVE SSO login and waypoint setting functionality

frontend/src/components/Header.tsx

@@ -1,14 +1,17 @@
 
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import { useNavigate } from 'react-router-dom';
 import {
-  Breadcrumb,
-  BreadcrumbItem,
-  BreadcrumbLink,
-  BreadcrumbList,
-  BreadcrumbPage,
-  BreadcrumbSeparator,
+    Breadcrumb,
+    BreadcrumbItem,
+    BreadcrumbLink,
+    BreadcrumbList,
+    BreadcrumbPage,
+    BreadcrumbSeparator,
 } from '@/components/ui/breadcrumb';
+import { Button } from '@/components/ui/button';
+import { toast } from '@/hooks/use-toast';
+import { StartESILogin, ESILoginStatus } from '@/wailsjs/go/main/App';
 
 interface HeaderProps {
   title: string;
@@ -20,6 +23,20 @@ interface HeaderProps {
 
 export const Header = ({ title, breadcrumbs = [] }: HeaderProps) => {
   const navigate = useNavigate();
+  const [status, setStatus] = useState<string>('');
+
+  useEffect(() => {
+    ESILoginStatus().then(setStatus).catch(() => setStatus(''));
+  }, []);
+
+  const handleLogin = async () => {
+    try {
+      await StartESILogin();
+      toast({ title: 'EVE Login', description: 'Complete login in your browser. Reopen menu to refresh status.' });
+    } catch (e: any) {
+      toast({ title: 'Login failed', description: String(e), variant: 'destructive' });
+    }
+  };
 
   return (
     <div className="flex-shrink-0 py-4 px-4 border-b border-purple-500/20">
@@ -52,8 +69,14 @@ export const Header = ({ title, breadcrumbs = [] }: HeaderProps) => {
         </div>
       )}
       
-      {/* Title */}
-      <h1 className="text-2xl font-bold text-white">{title}</h1>
+      {/* Title + EVE SSO */}
+      <div className="flex items-center justify-between">
+        <h1 className="text-2xl font-bold text-white">{title}</h1>
+        <div className="flex items-center gap-2">
+          <span className="text-sm text-slate-300">{status || 'EVE: not logged in'}</span>
+          <Button size="sm" className="bg-purple-600 hover:bg-purple-700" onClick={handleLogin}>Log in</Button>
+        </div>
+      </div>
     </div>
   );
 };