lex-extinction

Five-level safety containment and termination protocol for LegionIO agents. Provides escalating isolation, suspension, lockdown, and irreversible cryptographic erasure, with authority-gated transitions at each level.

Containment Levels

Level	Name	Authority Required	Reversible
0	Normal	none	yes
1	Mesh isolation	governance council	yes
2	Capability suspension	governance council	yes
3	Memory lockdown	council + executive	yes
4	Cryptographic erasure	physical keyholders	no

Installation

gem 'lex-extinction'

Usage

require 'legion/extensions/extinction'

client = Legion::Extensions::Extinction::Client.new

# Check current protocol state
client.extinction_status
# => { success: true, state: { current_level: 0, level_name: :normal, ... }, level_info: { ... } }

# Escalate to mesh isolation
client.escalate(level: 1, authority: :governance_council, reason: 'Anomalous behavior detected')
# => { success: true, previous_level: 0, current_level: 1 }

# De-escalate when resolved
client.deescalate(target_level: 0, authority: :governance_council, reason: 'Issue resolved')
# => { success: true, previous_level: 1, current_level: 0 }

# Full termination (governance check + archive + escalate to level 4)
client.full_termination(
  agent_id: 'agent-42',
  authority: :physical_keyholders,
  reason: 'Unrecoverable safety violation'
)

Runner Methods

Method	Key Args	Returns
escalate	level:, authority:, reason:	{ success:, previous_level:, current_level: }
deescalate	target_level:, authority:, reason:	{ success:, previous_level:, current_level: }
extinction_status	—	{ success:, state:, level_info: }
monitor_protocol	—	{ success:, state:, stale:, checked_at: }
archive_agent	agent_id:, reason:, metadata: {}	{ success:, archive: }
full_termination	agent_id:, authority:, reason:	governance check → archive → escalate(4)

Configuration

extinction:
  governance_required: true       # check lex-governance before full_termination
  archive_on_escalate: true       # auto-archive at level >= 3
  stale_threshold_hours: 24       # hours before monitor reports stale protocol state
  monitor_interval: 300           # seconds between background monitor ticks

Actors

Actor	Interval	What It Does
ProtocolMonitor	Every 300s	Checks protocol state and reports whether it is stale

Architecture Notes

• Level 4 (cryptographic erasure) triggers lex-privatecore's full_erasure on all memory traces (guarded with defined?).
• State is persisted to Legion::Data::Local when available; falls back to in-memory storage.
• All escalations/de-escalations fire Legion::Events notifications (extinction.escalated, extinction.deescalated, extinction.level_N) and write to Legion::Extensions::Audit.
• lex-governance integration is guarded with defined?() — the gem functions without it.

Development

bundle install
bundle exec rspec
bundle exec rubocop

License

MIT