Address security issues in the signup module#667

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vagisha wants to merge 8 commits into

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26.7_fb_signup-security

Commits on Jul 26, 2026

Hardened the signup enumeration response and added audit checks to the group-change test

vagisha
and
claude
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Addressed code-review findings on the signup security changes

vagisha
and
claude
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Removed unused import
vagisha
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Commits on Jul 27, 2026

SignUpController: added group ids to the self-service group-change audit message, matching the admin-config audit events
vagisha
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