Remove unused fields (log, rbacService, roleRepository, jwt), unused variables (agentTps, routeKeys, updated), unused imports (HttpHeaders, JdbcTemplate). Rename restricted identifier 'record' to 'auditRecord'/'event'. Return empty collections instead of null. Replace .collect(Collectors.toList()) with .toList(). Simplify conditional return in BootstrapTokenValidator. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>