v1.1.3 — EasyAdmin integration audit

This release includes the merged EasyAdmin integration audit (PR #6). It adds regression tests for missing and unauthorized records, and documents the integration responsibilities between EasyAdmin, the bundle, and the host application. No runtime behavior or public API changes. Verified by 27 PHPUnit tests (90 assertions), PHPStan level 8, and green GitHub Actions for PHP 8.4 (lowest/highest dependencies) and PHP 8.5 (highest dependencies). Existing session-level concurrency and distributed exactly-once limitations remain documented.