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openspec/archive/2026-04-19-enterprise-dmarc/proposal.md

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+# OpenSpec Change: enterprise-dmarc
+
+- **Change ID**: enterprise-dmarc
+- **Package**: `@suaveplan/dmarc`
+- **Category**: universal
+- **Target path**: `universal/email/dmarc`
+- **Status**: PROPOSED
+- **Date**: 2026-04-19
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/dmarc.md`
+
+## Summary
+Parses DMARC aggregate (RUA) and forensic (RUF) reports into typed structures. Input: raw XML or `application/gzip`-wrapped XML as produced by Google / Microsoft / Yahoo aggregate reporters. Output: `DmarcAggregateReport` / `DmarcForensicReport`. Leaf package — useful to deliverability analytics.
+
+## Current-state audit (genesis)
+Package does not exist yet — fresh build.
+
+## Dependencies
+- Workspace: none (leaf)
+- External (via catalog): `fast-xml-parser`, `fflate`, `zod`, `tslib`, `@opentelemetry/api`
+- Dev (via catalog): `vitest`, `@vitest/coverage-istanbul`, `fast-check`, `mitata`
+
+## Preserved public surface
+- `parseDmarcAggregate(input, options?): DmarcAggregateReport`
+- `parseDmarcForensic(input, options?): DmarcForensicReport`
+- Types: `DmarcAggregateReport`, `DmarcForensicReport`, `DmarcRecord`, `DmarcPolicyPublished`, `DmarcAuthResult`, `DmarcDateRange`, `DmarcIdentifier`, `DmarcReportMetadata`, `AlignmentMode`, `DispositionMode`
+
+## New genesis additions
+- Codes: `DMARC.PARSE_ERROR`, `DMARC.INVALID_REPORT`, `DMARC.UNSUPPORTED_ENCODING`.
+- Zod schemas for each report type.
+- OTel counter `dmarc.parse.total{kind}`, histogram `dmarc.parse.duration_ms{kind}`.
+- Property tests on random but structurally valid XML trees.
+
+## Impact
+- Adds one new package: `universal/email/dmarc`
+- Adds one new spec capability: `dmarc`