[jkrenge]

Superseded by consolidated postal geocoding PR #124. This PR's head commit is retained in the combined branch. Combined CI passes on Node.js 24/26 and static checks.

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Summary

Add Luxembourg postal points for approximate delivery-to-return distance analysis.

ACT BD-Adresses CSV (CC0, 2026-11-02)
  → distinct coordinate pairs per postal code
  → mean WGS84 point
  → 4,200 full postal-code lookups

Source: official dataset and license, retrieved 2026-11-04. The 179,768 source address rows produce 4,200 unique postal records. docs/geocode-LUX.md records the snapshot, hashes, method, source checks, and limits. The Python generator uses only the standard library and includes assert-based checks.

Evidence

• Before: LUX was unsupported; coordinates('LUX', '1135') returned undefined.
  After: it returns ['6.112139', '49.611600'] in the existing longitude-first string format.
• 98 tests pass, including full dataset checks and actual LUX lookups for Luxembourg, Hupperdange, and Wemperhardt.
• npm run lint, npm run format:check, and npm run validate:data pass. Data validation retains the existing AUT/BEL warnings.

Merge Danger

Door: two-way

Blast Radius: LUX

Only LUX data, tests, generator, documentation, and one geocode allowlist entry change. Other country behavior and exports remain unchanged. The allowlist file overlaps other country PRs; retain their entries when resolving conflicts.

The source is incomplete. Points are means of distinct available address positions, not official postal centroids. Six decimal places are storage precision, not guaranteed accuracy. Unknown codes and L--prefixed input remain unsupported; no fallback center is added. No merge, deployment, or publication is included.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-04T22:03:37.609975Z	7319519	PR opened

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