AK annual-tax ingestion completed in the isolated handoff worktree; it adds deterministic, privacy-minimized East Hampton tax evidence and truthful tax-under-price UI without any remote mutation.

Scope

• Host: rdmsm4x
• Worktree: /Users/richh/dev/_handoff/codex-out/amagansett-ak-tax-ingestion-20260828
• Branch: codex/ak-tax-ingestion-20260828
• No deployment, remote D1, DNS, Cloudflare, Access, or external-content change was performed.

Changed files

• packages/ak-tax-ingestion/index.mjs and index.d.mts: deterministic address-only parser, jurisdiction gate, ambiguity guard, idempotent migration renderer.
• scripts/ak-tax-ingestion.ts, packages/data/ak-annual-tax-evidence.generated.ts, and migrations/0010_ak_annual_tax_evidence.sql: reproducible evidence output and unexecuted additive migration.
• packages/data/seed.ts, packages/core/types.ts: local-seed consumption so verified tax does not regress on a source rebuild.
• worker/src/platform-fragments.ts, sites/ak/src/site.css, and AK tests: exact annual tax below listing price on card/detail, otherwise pending verification.
• docs/AK-ANNUAL-TAX-INGESTION-20260828.md: counts, authority/provenance, rollback, Southampton portal boundary, and verification receipt.

Evidence and validation

• Official East Hampton 2025-2026 roll run: 20,160 records, 20,156 unique parcels; 202 verified, 9 ambiguous, 572 unmatched from 783 candidates after jurisdiction gating.
• Locked evidence: compass-60-alewife is parcel 472489 073.000-0005-002.000, bill 0108093, annual tax $6,964.98.
• CI=1 npm run verify passed: 28 Vitest files / 203 tests, typecheck, builds, dry-run Worker check, local preview contract, and 33 Playwright tests.
• The generated migration was run twice only against a disposable local SQLite database; it retained exact decimal tax and produced 202 evidence rows. It was not run against D1.
• Mobile screenshot evidence is transient and uncommitted: test-results/ak-tax-under-price-mobile.png.

Undo / next action

• Do not run the generated migration without an authorized remote D1 backup and review. Rollback restores properties values from _migration_0010_ak_annual_tax_backup, then deletes the matching property_annual_tax_evidence rows.
• Southampton candidates remain pending: official portal terms/automation permission and a stable annual-total source need review before an adapter exists.