Janus Demo — 60 Second Proof

1. What this proves

This demo validates:

• governance evaluation
• omission detection
• human authority registration
• audit writing
• deterministic rebuild

2. Run

node runtimes/demo-node/demo.js

3. Expected output

FLOW A — omission case { "requiredEvent": "HUMAN_DECISION", "proposedChanges": 1, "humanDecisionPresent": false, "auditEventsWritten": [ "OMISSION_DETECTED" ] }

REBUILD STATE { "proposedChanges": 1, "humanDecisionPresent": false, "omissionsDetected": 1, "auditEvents": 1 }

FLOW B — approved case { "requiredEvent": "HUMAN_DECISION", "proposedChanges": 1, "humanDecisionPresent": true, "auditEventsWritten": [ "HUMAN_DECISION_REGISTERED" ] }

FLOW C — rebuild { "proposedChanges": 1, "humanDecisionPresent": true, "omissionsDetected": 0, "auditEvents": 1 }

4. Interpretation

• Janus does not only log activity
• it evaluates governance conditions
• records omission as structured evidence
• preserves human authority
• rebuilds state from logs