Module quality 

Encode quality scoring: Stealth (Ghost) and Robustness (Armor).

After encoding, these functions compute a 0-100% quality score that indicates how well-hidden (Ghost) or how robust (Armor) the encoded message is. The score is displayed in the mobile app HUD and encode success screen.

Structs

ArmorMetrics

Inputs for Armor robustness score computation.

EncodeQuality

Encode quality result returned alongside stego bytes.

GhostMetrics

Inputs for Ghost stealth score computation.

Functions

armor_robustness_score

Compute Armor robustness score (0-100).

ghost_stealth_score

Compute Ghost stealth score (0-100).