fix: Ensure onboarding triggers for new users

- Explicitly set has_completed_onboarding to false during user registration
- Update middleware to handle null values defensively
- This ensures new users are properly redirected to onboarding flow

Author: vijaythecoder

app/Http/Controllers/Auth/RegisteredUserController.php

@@ -40,6 +40,7 @@ public function store(Request $request): RedirectResponse
             'name' => $request->name,
             'email' => $request->email,
             'password' => Hash::make($request->password),
+            'has_completed_onboarding' => false,
         ]);
 
         event(new Registered($user));

app/Http/Middleware/EnsureOnboardingCompleted.php

@@ -21,7 +21,7 @@ public function handle(Request $request, Closure $next): Response
         }
 
         // Check if user has completed onboarding
-        if ($request->user() && ! $request->user()->has_completed_onboarding) {
+        if ($request->user() && $request->user()->has_completed_onboarding !== true) {
             return redirect()->route('onboarding.show');
         }