KeyStoneMastery

## [1.9.0] - 2026-04-29

### Fixed

- Hardened startup bootstrap event registration by routing initial `ADDON_LOADED` and `PLAYER_LOGIN` binds through the guarded safe-register path, avoiding direct `frame:RegisterEvent` calls in taint-sensitive sessions.

- Hardened chat command fallback parsing with a guarded normalization path so unreadable/secret payloads fail closed instead of attempting direct string normalization.

- Tightened chat payload readability checks to rely on guarded access/type checks before command parsing.