task: #3607839 Update Drupal core from ~11.3.0 to ~11.4.0 on the 10.1.x branch

Update the Drupal core constraint from ~11.3.0 to ~11.4.0 on the 10.1.x branch (used by Varbase 10.1.x) in composer.json and varbase_search.info.yml so it supports Drupal 11.4 (released 1 July 2026).

This MR also brings the module up to the strict-gating CI standard: the self-contained build+validate .gitlab-ci.yml is replaced with the drupalci template pipeline pinned to Drupal core 11.4.0 (IGNORE_PROJECT_DRUPAL_CORE_VERSION, _ALL_VALIDATE_ALLOW_FAILURE: "0"), where every validate job runs allow_failure: false. A webship-js (Playwright + Cucumber-js) BDD suite verifies Varbase Search end-to-end on a freshly installed Standard site (Search API DB server, content index, search results page, front-end search box).

Issue: https://www.drupal.org/i/3607839

Green pipeline: https://git.drupalcode.org/project/varbase_search/-/pipelines/874100 — all 7 jobs success, allow_failure:false (composer, composer-lint, cspell, eslint, phpcs, phpstan, webship-js-test — 5 scenarios / 29 steps passed). The stylelint and phpunit jobs are skipped by drupalci (no CSS, no PHPUnit tests).

AI-Generated: Yes (Claude Code)

Checkpoints

  • File an issue about this project
  • Addition/Change/Update/Fix to this project
  • Testing to ensure no regression
  • Automated unit/functional testing coverage
  • Developer Documentation support on feature change/addition
  • User Guide Documentation support on feature change/addition
  • UX/UI designer responsibilities
  • Accessibility and Readability
  • Reviewed by a human
  • Code review by maintainers
  • Full testing and approval
  • Credit contributors
  • Review with the product owner
  • Update Release Notes
  • Release
Edited by Rajab Natshah

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