PR Review: chore(geoip): update GeoLite2-Country.mmdb

This is a routine automated weekly update of the embedded GeoLite2-Country database. The change is straightforward — a single-line replacement of the brotli-compressed, base64-encoded mmdb blob in server/geoip/data.ts.

What this PR does

The workflow downloads the .mmdb file from P3TERX/GeoLite.mmdb, then runs scripts/update-mmdb.mjs to compress it with Brotli and embed it as a base64 string in a TypeScript source file. The consumer (server/services/geoip.ts) decompresses and opens it via @maxmind/geoip2-node.

Concerns

Supply chain risk (worth considering)

The database is pulled from a third-party mirror (P3TERX/GeoLite.mmdb) rather than the official MaxMind distribution. This is a common workaround since MaxMind requires account registration, but it means the project is trusting a third-party to faithfully mirror the upstream database. A compromised or tampered mirror could silently introduce incorrect geolocation data.

Recommendation: Consider verifying the integrity of the downloaded .mmdb file (e.g., comparing a checksum against a known-good reference, or cross-checking against another mirror) as part of the update workflow. Even a simple size sanity check would help catch obvious corruption.

No test coverage for the updated data

There are no automated tests that validate the newly embedded database (e.g., spot-checking that a known IP maps to the expected country). If the database were corrupt or truncated, this would only surface at runtime.

Recommendation: A lightweight test that performs one or two known lookups against server/services/geoip.ts would catch regressions from bad database updates.

Everything else looks fine

• The embedding strategy (Brotli + base64 in a TS file) is consistent with the existing pattern.
• Auto-merge with squash is appropriate for this type of automated dependency update.
• The PR description clearly documents the source and the generation process.

This is low-risk for the actual change, but the supply chain and validation gaps are worth addressing in the workflow itself rather than blocking this individual PR.