feat: allow super admin to update candidate tenant on profile page

app/Http/Controllers/CandidateController.php

@@ -84,10 +84,11 @@ class CandidateController extends Controller
             'attempts.quiz', 
             'attempts.answers.question',
             'attempts.answers.option',
-            'jobPosition'
+            'jobPosition',
+            'tenant'
         ]);
 
-        return \Inertia\Inertia::render('Admin/Candidates/Show', [
+        $data = [
             'candidate' => $candidate,
             'jobPositions' => \App\Models\JobPosition::all(),
             'ai_config' => [
@@ -99,7 +100,13 @@ class CandidateController extends Controller
                     'gemini' => !empty(env('GEMINI_API_KEY')),
                 ], function($v) { return $v; })
             ]
-        ]);
+        ];
+
+        if (auth()->user()->isSuperAdmin()) {
+            $data['tenants'] = \App\Models\Tenant::orderBy('name')->get();
+        }
+
+        return \Inertia\Inertia::render('Admin/Candidates/Show', $data);
     }
 
     public function destroy(Candidate $candidate)
@@ -174,6 +181,30 @@ class CandidateController extends Controller
         return back()->with('success', 'Fiche de poste associée au candidat.');
     }
 
+    public function updateTenant(Request $request, Candidate $candidate)
+    {
+        if (!auth()->user()->isSuperAdmin()) {
+            abort(403);
+        }
+
+        $request->validate([
+            'tenant_id' => 'nullable|exists:tenants,id',
+        ]);
+
+        $candidate->update([
+            'tenant_id' => $request->tenant_id,
+        ]);
+
+        // Also update the associated user's tenant_id if it exists
+        if ($candidate->user) {
+            $candidate->user->update([
+                'tenant_id' => $request->tenant_id,
+            ]);
+        }
+
+        return back()->with('success', 'Structure de rattachement mise à jour avec succès.');
+    }
+
     public function resetPassword(Candidate $candidate)
     {
         $password = Str::random(10);