Contagion — Contact-Based Outbreak Engine

Initial release.

• Contact-based transmission with radius, distance falloff and optional line-of-sight checks
• Incubation window with optional silent carriers
• Unlimited configurable symptom stages with potion effects, messages and contagiousness multipliers
• Turned end state with permanent effects, glowing and a server broadcast
• Cylindrical quarantine zones with block-transmission and deny-infected-entry flags
• Craftable antidote identified by a persistent data tag, with a configurable shaped recipe
• Outbreak start/stop commands with random patient zero selection
• Action bar HUD showing the current stage and time remaining
• Timestamp-based progression that keeps running while players are offline
• SQLite storage with automatic YAML fallback
• Developer API: ContagionInfectEvent, ContagionStageChangeEvent, ContagionCureEvent