Scenario modularization proof.

A redacted or synthetic refactor plan for Make/n8n scenarios that have grown into brittle all-in-one builds. It separates safe module boundaries from risky side effects, then assigns idempotency keys, error paths, and reviewer actions.

Refactor Ledger CSV Error Paths CSV Scenario Inventory CSV Module Boundaries CSV Idempotency Plan CSV Naming Runbook CSV Runbook Source Script Reference Patterns Ask If This Fits

Input

Four mock Make/n8n scenario families and six proposed sub-scenario boundaries.

Output

A refactor ledger with extract, dry-run, review-gate, and keep-inline decisions.

Guardrail

Five reusable boundaries move forward; one stays inline because reuse is not proven yet.

Boundary	Scenario	Decision	First Action	Idempotency Key	Reviewer Action
BND-01 webhook-ingress-normalizer	lead-webhook-router	extract_first	Extract before changing downstream writes.	tenant_id:request_id	Approve extraction after three sample payload tests.
BND-02 lead-eligibility-gate	lead-webhook-router	extract_with_review_gate	Extract behind a reviewable blocked-row ledger.	tenant_id:request_id:eligibility	Review blocked reasons before enabling live writes.
BND-03 enrichment-cache-lookup	enrichment-batch-cleanup	extract_first	Extract before changing downstream writes.	source_record_id:profile_version	Approve cache TTL and stale profile behavior.
BND-04 vendor-enrichment-worker	enrichment-batch-cleanup	dry_run_before_live	Run as a dry-run module until usage and ledger counts match.	source_record_id:vendor:run_date	Dry-run first and compare usage counts before live update.
BND-05 invoice-preflight-ledger	invoice-intake-approval	extract_with_review_gate	Extract behind a reviewable blocked-row ledger.	vendor_id:invoice_number:amount	Approve exception categories and replay rule.
BND-06 exec-report-builder	daily-exec-report	document_inline	Keep inline for now; add naming and runbook standard only.	report_window:channel	Leave inline and document naming only.