Add missing test coverage for MeilisearchService, AnalyticsCryptoService, AccountController and AdminController

- MeilisearchServiceTest: add test for invalidateSearchCache()
- AnalyticsCryptoService: mark unreachable tryDecryptJsFormat guard
  with @codeCoverageIgnore (decrypt already checks strlen >= 28)
- AccountControllerTest: add test for tickets search query (tq param)
- AdminControllerTest: add test for infra page with snapshot data file

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/Service/MeilisearchServiceTest.php

@@ -248,6 +248,19 @@ class MeilisearchServiceTest extends TestCase
         self::assertSame(['events', 'users'], $indexes);
     }
 
+    public function testInvalidateSearchCache(): void
+    {
+        $item = $this->cache->getItem('test_key');
+        $item->set('value');
+        $this->cache->save($item);
+
+        self::assertTrue($this->cache->hasItem('test_key'));
+
+        $this->service->invalidateSearchCache();
+
+        self::assertFalse($this->cache->hasItem('test_key'));
+    }
+
     public function testListIndexesEmpty(): void
     {
         $response = $this->createMock(ResponseInterface::class);