sec(auth): security enhancement & key management
sec(auth): JWT security enhancement & key management
- Enforce min 32-byte JWT_SIGNING_KEY in InitRequestUtils.
- Stop service startup on InitCoreModule errors.
- Enforce Bearer, exp, iss, sessionId, and HS256 in CheckToken.
- Add CheckTokenWithoutSession for session-less flows.
- Add SignClaims helper and JWT regression tests.