Write session action receipts

Write audit receipt for every session with state-changing actions

When you need an immutable audit trail of what changed in a session and whether it's rollback-eligible.

• · action type (file:write, api:call, deploy, etc.)
• · target, summary, status, duration

• · receipts/YYYY-MM-DD-HH-MM-SS-[action-type].json (audit trail)

• · Session performed mutations (file writes, API calls, deploys, emails)
• · receipts/ directory can be created

• · Receipt written for read-only operations (incorrect usage)
• · Missing anomalies array when unexpected occurred
• · Rollback falsely marked as available for deployed/sent actions

• · Sequence + timestamp ordering enforced
• · Anomaly tracking for unexpected outcomes
• · TypeScript + Python templates provided