Strip advisory identifiers (GHSA-*) from describe blocks, test
docblocks, and inline comments. Replace with plain descriptive
labels. Also clean up FQCNs to use imported class names and minor
style fixes (string concatenation spacing).
Replace mt_rand/rand with random_int for stronger randomness guarantees
in verification code generation and Blade component keying.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>