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Add configurable password strength validation - #124
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Adds local password-strength validation with
it.HasPasswordStrength(), standalonevalidate.PasswordStrength, andvalidate.EstimatePasswordStrengthfor score displays. The default minimum is Medium (2), configurable from Weak (1) to VeryStrong (4).The estimator reproduces Symfony 8.0's byte-based entropy heuristic without dictionaries, sequence detection, normalization, dependencies, or network requests. README documents its limitations, including high scores for predictable sequences. Custom estimators can replace the algorithm; out-of-range scores and invalid minimums produce configuration errors, and nil estimators restore the default.
Nil pointers are skipped. Empty strings are evaluated and rejected by the default estimator, matching Symfony. Violations only receive strength/minimum parameters, never the password automatically. Includes customizable errors/messages, groups, generic This/Each support, English/Russian translations, examples, and an Unreleased changelog entry.
Validation:
bash scripts/test-all.shpassed (formatting, vet, golangci-lint v2.13.2, unit and race tests, module tidy and verification). Tests cover Symfony reference examples, all category/score thresholds, repeats and UTF-8 examples, custom estimators and invalid configurations, empty input, translations, and absence of password data in violation parameters.Closes #109.