fix: move Wulf logo to left navbar, correct spelling to Wulf

- Replaced Pulse icon with Wulf logo on left side of navbar
- Removed duplicate logo from right side
- Corrected alt text from 'Wulff' to 'Wulf'
- Logo now appears next to Pulse branding on left

components/navigation/app-navigation.tsx

@@ -99,9 +99,11 @@ export function AppNavigation() {
         <div className="flex flex-1 items-center justify-center">
           {/* Logo and App Name */}
           <Link href="/" className="flex items-center space-x-3 absolute left-4">
-            <div className="flex h-9 w-9 items-center justify-center rounded-lg bg-gradient-to-br from-blue-600 to-blue-700 text-white shadow-lg">
-              <Activity className="h-5 w-5" />
-            </div>
+            <img 
+              src="/wulff-logo.png" 
+              alt="Wulf Consulting" 
+              className="h-10 w-auto"
+            />
             <div className="hidden sm:block">
               <h1 className="text-xl font-semibold tracking-tight">
                 Pulse
@@ -172,13 +174,6 @@ export function AppNavigation() {
           {/* Right Side Actions */}
           <div className="flex items-center gap-3 absolute right-4">
             <ThemeToggle />
-            <Link href="/" className="flex items-center">
-              <img 
-                src="/wulff-logo.png" 
-                alt="Wulff Consulting" 
-                className="h-10 w-auto"
-              />
-            </Link>
           </div>
         </div>
       </div>