Issue #3589186: Ignore known PHPStan false positives (upstream ai docblock...

Joshua Fernandesrequested to merge
issue/gemini_provider-3589186:3589186-fix-pre-existing-phpstan-failures-stale-drupalai-constraint-test-side-typedeprecation-issues into 1.x

Issue #3589186 (closed): Ignore known PHPStan false positives (upstream ai docblock typos, ProviderProxy __call, intentional deprecated-method tests).

Adds documented ignoreErrors rules to phpstan.neon so the job reports zero errors and can be made blocking:

  • "Drupal\ai\Operation..." invalid-type errors are inherited from the ai module's own typo'd @param/@var docblocks (drupal.org/i/3505528); this module's code correctly uses Drupal\ai\OperationType...
  • ProviderProxy exposes provider methods only via __call(), which PHPStan cannot resolve.
  • setChatSystemRole() is deprecated in ai:1.2.0 but still shipped in ai 1.x; the unit tests intentionally cover it.

Sets reportUnmatchedIgnoredErrors: false so the build stays green once the upstream ai fix lands.

Closes #3589186 (closed)

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