Authentication and Security Hardening
Hardened Google account linking, session invalidation, 2FA changes, same-origin mutations, and baseline security headers.
#What's Changed
- [Security] Restricted Google sign-in and account linking to explicit, verified account states.
- [Security] Revoked active sessions after password resets and required confirmation before disabling 2-Step Verification.
- [Security] Added same-origin mutation protection and baseline browser security headers.