add: full multi-tenancy control

app/Http/Controllers/SuperAdmin/TenantController.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Http\Controllers\SuperAdmin;
+
+use App\Http\Controllers\Controller;
+use App\Models\Tenant;
+use Illuminate\Http\Request;
+
+use Illuminate\Support\Facades\Auth;
+
+class TenantController extends Controller
+{
+    public function index()
+    {
+        $tenants = Tenant::all();
+        return view('super-admin.tenants.index', compact('tenants'));
+    }
+
+    public function create()
+    {
+        return view('super-admin.tenants.create');
+    }
+
+    public function store(Request $request)
+    {
+        $validated = $request->validate([
+            'id' => 'required|string|unique:mysql.tenants',
+            'domain' => 'required|string|unique:mysql.domains,domain',
+        ]);
+
+        $tenant = Tenant::create([
+            'id' => $validated['id'],
+            'last_updated_by' => Auth::user()->name ?? 'Super Admin',
+        ]);
+
+        $tenant->domains()->create([
+            'domain' => $validated['domain'],
+        ]);
+
+        return redirect()->route('super-admin.tenants.index')
+            ->with('success', 'Tenant created successfully.');
+    }
+
+    public function destroy($id)
+    {
+        $tenant = Tenant::findOrFail($id);
+        $tenant->delete();
+
+        return redirect()->route('super-admin.tenants.index')
+            ->with('success', 'Tenant deleted successfully.');
+    }
+}