Expand Link app with analytics, settings, and custom domains.

Add Bitly-style branded domain support via Ladill Domains SSL API,
account analytics dashboard, settings page with default domain picker,
and fix SSO/dashboard issues from QR Plus template leftovers.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Http/Controllers/Link/CustomDomainController.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace App\Http\Controllers\Link;
+
+use App\Http\Controllers\Controller;
+use App\Models\LinkCustomDomain;
+use App\Services\CustomDomain\DomainsSslClient;
+use App\Services\CustomDomain\LinkCustomDomainService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class CustomDomainController extends Controller
+{
+    public function __construct(
+        private readonly LinkCustomDomainService $service,
+        private readonly DomainsSslClient $domains,
+    ) {}
+
+    public function index(Request $request): View
+    {
+        $account = ladill_account();
+
+        return view('links.domains.index', [
+            'domains' => $account->linkCustomDomains()->latest()->get(),
+            'enabled' => $this->service->enabled(),
+            'serverIp' => (string) config('customdomain.server_ip'),
+            'publicDomain' => (string) config('link.public_domain', 'ladl.link'),
+        ]);
+    }
+
+    public function store(Request $request): RedirectResponse
+    {
+        abort_unless($this->service->enabled(), 404);
+
+        $data = $request->validate([
+            'host' => ['required', 'string', 'max:255', 'regex:/^(?!-)([a-z0-9-]+\.)+[a-z]{2,}$/i'],
+            'include_www' => ['nullable', 'boolean'],
+            'make_default' => ['nullable', 'boolean'],
+        ]);
+
+        $host = strtolower(preg_replace('/^www\./', '', trim($data['host'])));
+
+        if (LinkCustomDomain::where('host', $host)->exists()) {
+            return back()->withErrors(['host' => 'That domain is already connected.']);
+        }
+
+        $domain = $this->service->attach(
+            $request->user(),
+            $host,
+            (bool) ($data['include_www'] ?? true),
+            (bool) ($data['make_default'] ?? false),
+        );
+
+        $this->domains->registerConnected(
+            $host,
+            (string) $request->user()->public_id,
+            'Ladill Link',
+            route('link.domains.index'),
+        );
+
+        return back()->with('success', "Domain added. Point an A record for {$host} to ".config('customdomain.server_ip').', then click Verify.');
+    }
+
+    public function verify(Request $request, LinkCustomDomain $customDomain): RedirectResponse
+    {
+        abort_unless($customDomain->user_id === $request->user()->id, 403);
+
+        [$ok, $message] = $this->service->verifyAndProvision($customDomain);
+
+        return back()->with($ok ? 'success' : 'error', $message);
+    }
+
+    public function makeDefault(Request $request, LinkCustomDomain $customDomain): RedirectResponse
+    {
+        abort_unless($customDomain->user_id === $request->user()->id, 403);
+        abort_unless($customDomain->isLive(), 422);
+
+        $this->service->setDefault($customDomain);
+
+        return back()->with('success', $customDomain->host.' is now your default short-link domain.');
+    }
+
+    public function destroy(Request $request, LinkCustomDomain $customDomain): RedirectResponse
+    {
+        abort_unless($customDomain->user_id === $request->user()->id, 403);
+
+        $host = $customDomain->host;
+        $customDomain->delete();
+        $this->domains->removeConnected($host);
+
+        return back()->with('success', 'Custom domain removed.');
+    }
+}