fix: restrict deep_link to relative paths and http(s)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCrwHHnGCB5XH968Nxokqw

core/app/Http/Controllers/InboxController.php

@@ -70,7 +70,7 @@ class InboxController extends Controller
             'state' => $e->state->value,
             'title' => $e->payload['title'],
             'subtitle' => $e->payload['subtitle'] ?? null,
-            'link' => $e->payload['deep_link'] ?? null,
+            'link' => self::safeLink($e->payload['deep_link'] ?? null),
             'done_label' => $e->payload['done_label'] ?? 'Сделано',
             'can_remind' => $e->state !== EventState::Scheduled,
             'source' => self::sourceLabel($e->source->name),
@@ -88,6 +88,12 @@ class InboxController extends Controller
         return $name === 'manual' ? 'вручную' : $name;
     }
 
+    /** Пропускает только относительные пути и http(s)-ссылки; прочее (напр. javascript:) отбрасывает. */
+    public static function safeLink(?string $link): ?string
+    {
+        return $link !== null && preg_match('#^(/|https?://)#i', $link) === 1 ? $link : null;
+    }
+
     public static function relative(int $diff): string
     {
         $days = fn (int $n) => $n % 10 === 1 && $n % 100 !== 11 ? 'день' : ($n % 10 >= 2 && $n % 10 <= 4 && ($n % 100 < 12 || $n % 100 > 14) ? 'дня' : 'дней');