diff --git a/.github/workflows/backend-ci.yaml b/.github/workflows/backend-ci.yaml
index 2d3bc563..ef9f7626 100644
--- a/.github/workflows/backend-ci.yaml
+++ b/.github/workflows/backend-ci.yaml
@@ -1,10 +1,11 @@
-name: CI
+name: Backend CI
 
 on:
     push:
         branches:
             - '[0-9]+.[0-9]+'
     pull_request: ~
+    workflow_dispatch: ~
 
 jobs:
     cs-fix:
@@ -19,38 +20,17 @@ jobs:
 
             -   uses: ibexa/gh-workflows/actions/composer-install@main
                 with:
+                    php-version: ${{ matrix.php }}
                     gh-client-id: ${{ secrets.AUTOMATION_CLIENT_ID }}
                     gh-client-secret: ${{ secrets.AUTOMATION_CLIENT_SECRET }}
                     satis-network-key: ${{ secrets.SATIS_NETWORK_KEY }}
                     satis-network-token: ${{ secrets.SATIS_NETWORK_TOKEN }}
 
             -   name: Run code style check
-                run: composer run-script check-cs -- --format=checkstyle | cs2pr
-
-    rector:
-        name: Run rector
-        runs-on: "ubuntu-24.04"
-        strategy:
-            matrix:
-                php:
-                    - '8.3'
-        steps:
-            -   uses: actions/checkout@v6
-
-            -   name: Setup PHP Action
-                uses: shivammathur/setup-php@v2
-                with:
-                    php-version: ${{ matrix.php }}
-                    coverage: none
-                    extensions: 'pdo_sqlite, gd'
-                    tools: cs2pr
-
-            -   uses: ramsey/composer-install@v3
-                with:
-                    dependency-versions: highest
-
-            -   name: Run rector
-                run: vendor/bin/rector process --dry-run --ansi
+                shell: bash
+                run: |
+                    set -euo pipefail
+                    composer run-script check-cs -- --format=checkstyle | cs2pr
 
     tests:
         name: Unit tests & SQLite integration tests
@@ -69,6 +49,7 @@ jobs:
 
             -   uses: ibexa/gh-workflows/actions/composer-install@main
                 with:
+                    php-version: ${{ matrix.php }}
                     gh-client-id: ${{ secrets.AUTOMATION_CLIENT_ID }}
                     gh-client-secret: ${{ secrets.AUTOMATION_CLIENT_SECRET }}
                     satis-network-key: ${{ secrets.SATIS_NETWORK_KEY }}
diff --git a/.github/workflows/browser-tests.yaml b/.github/workflows/browser-tests.yaml
index 687cff07..668a8290 100644
--- a/.github/workflows/browser-tests.yaml
+++ b/.github/workflows/browser-tests.yaml
@@ -3,7 +3,6 @@ name: Browser tests
 on:
     push:
         branches:
-            - main
             - '[0-9]+.[0-9]+'
     pull_request: ~
 
diff --git a/.github/workflows/pr-assign.yaml b/.github/workflows/pr-assign.yaml
deleted file mode 100644
index 302423e3..00000000
--- a/.github/workflows/pr-assign.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-name: Assign Pull Request to maintainers
-
-on:
-    pull_request_target:
-
-jobs:
-    assign:
-        uses: ibexa/gh-workflows/.github/workflows/pr-assign.yml@main
-        secrets:
-            robot-token: ${{ secrets.EZROBOT_PAT }}
diff --git a/.github/workflows/rector.yaml b/.github/workflows/rector.yaml
new file mode 100644
index 00000000..804802ae
--- /dev/null
+++ b/.github/workflows/rector.yaml
@@ -0,0 +1,17 @@
+name: Rector PHP
+on:
+    push:
+        branches:
+            - '[0-9]+.[0-9]+'
+    pull_request: ~
+jobs:
+    rector:
+        name: Run rector
+        uses: ibexa/gh-workflows/.github/workflows/rector.yml@main
+        with:
+            php-version: '8.3'
+        secrets:
+            AUTOMATION_CLIENT_ID: ${{ secrets.AUTOMATION_CLIENT_ID }}
+            AUTOMATION_CLIENT_SECRET: ${{ secrets.AUTOMATION_CLIENT_SECRET }}
+            SATIS_NETWORK_KEY: ${{ secrets.SATIS_NETWORK_KEY }}
+            SATIS_NETWORK_TOKEN: ${{ secrets.SATIS_NETWORK_TOKEN }}
diff --git a/composer.json b/composer.json
index 9caff30a..83d6749f 100644
--- a/composer.json
+++ b/composer.json
@@ -50,6 +50,7 @@
         "ibexa/rector": "~5.0.x-dev",
         "ibexa/rest": "~5.0.x-dev",
         "ibexa/search": "~5.0.x-dev",
+        "ibexa/test-core": "~5.0.x-dev",
         "matthiasnoback/symfony-dependency-injection-test": "^5.0",
         "phpstan/phpstan": "^2.0",
         "phpstan/phpstan-phpunit": "^2.0",
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index eff8e4e8..fdfee57d 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -6,35 +6,10 @@
  */
 declare(strict_types=1);
 
-use Ibexa\Contracts\Core\Test\Persistence\Fixture\FixtureImporter;
-use Ibexa\Tests\Core\Repository\LegacySchemaImporter;
-use Ibexa\Tests\Integration\User\IbexaTestKernel;
-use Symfony\Bundle\FrameworkBundle\Console\Application;
-use Symfony\Component\Console\Input\ArrayInput;
+use Ibexa\Contracts\Test\Core\Bootstrapper\Bootstrapper;
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
 chdir(__DIR__ . '/..');
 
-$kernel = new IbexaTestKernel('test', true);
-$kernel->boot();
-
-$application = new Application($kernel);
-$application->setAutoExit(false);
-
-$application->run(new ArrayInput([
-    'command' => 'doctrine:database:create',
-]));
-
-/** @var \Psr\Container\ContainerInterface $testContainer */
-$testContainer = $kernel->getContainer()->get('test.service_container');
-
-$schemaImporter = $testContainer->get(LegacySchemaImporter::class);
-foreach ($kernel->getSchemaFiles() as $file) {
-    $schemaImporter->importSchema($file);
-}
-
-$fixtureImporter = $testContainer->get(FixtureImporter::class);
-foreach ($kernel->getFixtures() as $fixture) {
-    $fixtureImporter->import($fixture);
-}
+(new Bootstrapper())->bootstrap();
diff --git a/tests/integration/IbexaTestKernel.php b/tests/integration/IbexaTestKernel.php
index d328e521..c816d7cd 100644
--- a/tests/integration/IbexaTestKernel.php
+++ b/tests/integration/IbexaTestKernel.php
@@ -10,9 +10,10 @@
 
 use Ibexa\Bundle\ContentForms\IbexaContentFormsBundle;
 use Ibexa\Bundle\Notifications\IbexaNotificationsBundle;
+use Ibexa\Bundle\Test\Core\IbexaTestCoreBundle;
 use Ibexa\Bundle\User\IbexaUserBundle;
 use Ibexa\ContentForms\Form\ActionDispatcher\UserDispatcher;
-use Ibexa\Contracts\Core\Test\IbexaTestKernel as BaseIbexaTestKernel;
+use Ibexa\Contracts\Test\Core\IbexaTestKernel as BaseIbexaTestKernel;
 use Ibexa\Contracts\User\Invitation\InvitationService;
 use LogicException;
 use Symfony\Component\Config\Loader\LoaderInterface;
@@ -22,21 +23,13 @@
 
 final class IbexaTestKernel extends BaseIbexaTestKernel
 {
-    #[\Override]
-    public function getSchemaFiles(): iterable
-    {
-        yield from parent::getSchemaFiles();
-
-        yield from [
-            $this->locateResource('@IbexaUserBundle/Resources/config/storage/schema.yaml'),
-        ];
-    }
-
     #[\Override]
     public function registerBundles(): iterable
     {
         yield from parent::registerBundles();
 
+        yield new IbexaTestCoreBundle();
+
         yield from [
             new IbexaUserBundle(),
             new IbexaNotificationsBundle(),