* Exec: cover unicode obfuscation cases * Exec: normalize unicode obfuscation detection * Changelog: note exec detection hardening * Exec: strip unicode tag character obfuscation * Exec: harden unicode suppression and length guards * Exec: require path boundaries for safe URL suppressions
* security(exec): add obfuscated command detector * test(exec): cover obfuscation detector patterns * security(exec): enforce obfuscation approval on gateway host * security(exec): enforce obfuscation approval on node host * test(exec): prevent obfuscation timeout bypass * chore(changelog): credit obfuscation security fix