Refine PII fields in anonymization job and handle anon. records in app

[rzueger]

• Add privacyPolicyAcceptedAt (consent timestamp per movement)
• Add paymentMethod/invoiceRecipientName (nested PII)
• Remove aircraftType, mtow (not PII without immatriculation)
• Remove carriageVoucher (boolean, not PII)

https://claude.ai/code/session_01KHZDkEfyznUCcoGCWrGdsY

[rzueger]

@claude review pr

[claude]

Claude finished @rzueger's task in 1m 17s —— View job

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PR Review

• Gather context
• Read changed files
• Provide review feedback

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Overall this is a clean, well-reasoned change with good test coverage. A few observations:

functions/anonymizeMovements.js

The PII field decisions are sound:

• Removing aircraftType / mtow makes sense — without immatriculation these fields are not linkable to an individual
• Removing carriageVoucher (boolean) is correct — not PII
• Adding privacyPolicyAcceptedAt is correct — it's a per-person consent timestamp

The nested paymentMethod.invoiceRecipientName handling is correct. The guard val.paymentMethod && val.paymentMethod.invoiceRecipientName !== undefined properly handles all cases (no paymentMethod, cash with no name, invoice with name). The method field is correctly preserved.

src/util/movements.ts — type not updated

immatriculation is still typed as string (non-nullable) in the Movement interface (movements.ts:11), even though anonymized records will have immatriculation: null in the DB. The tests work around this with as any casts. It would be more accurate to update the interface:

// movements.ts:11
immatriculation: string | null;

This would make the null guards in compareDescending/compareAscending type-safe without the as any workaround. Fix this →

src/util/LandingsReport.ts

The early return if (!immatriculation) return; (line 70) correctly skips anonymized arrivals. As a consequence, the sort fallback at line 95 — (a1.immatriculation || '').localeCompare(a2.immatriculation || '') — is now dead code since no null immatriculations can reach the sort. Not a bug, just slightly misleading defensive code. Up to you whether to simplify back to a1.immatriculation.localeCompare(a2.immatriculation).

Test coverage

Good tests added:

• Verifies invoiceRecipientName is nulled when present
• Verifies no spurious update when invoiceRecipientName is absent (cash method)
• Verifies null immatriculation doesn't crash comparators
• Verifies aircraftType / mtow are explicitly not anonymized

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Summary: Approve with the optional suggestion to update the Movement interface. The logic is correct and all edge cases are covered.