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Maurice
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Two thirds of be-weather-airports-fold. weatherService (513 LOC, a process cache and a setInterval at import) is left for its own PR. airportService split along the line that was already there. The dataset lookup touches no database — it reads one JSON file and keeps it in memory — and both MCP registrars call it from outside the container, so findByIata/searchAirports are free functions in nest/airports/airports.data.ts. backfillFlightEndpoints needs the connection and became a method on AirportsService. That backfill was the interesting part. db/database.ts ran it at module eval through a bare require() back into services/, so the module graph closed a cycle that only held because `db` happened to be initialised by the time the require resolved. It runs in onApplicationBootstrap now: it repairs rows, nothing boots on it, and the container is fully built by then. The cycle had a visible cost. tests/setup.console-noise.ts carried a suppression for `Cannot find module '../services/airportService'`, because vitest's transform pipeline could not resolve that require at all — it fired in roughly sixty test files. That suppression is now narrowed to the only case left: an e2e TestingModule whose fixture DB has no reservations table. distanceService split the same way: haversineKm is arithmetic and moved to common/geo.ts; getFlightDistanceKm reads the database and became a private method on AuthService, its only caller. AirportsModule imports DatabaseModule explicitly. @Global only reaches modules that are in the graph, and the airports e2e builds its container from AirportsModule alone — exactly the trap the nest README now documents. The search ranking gets its first direct tests. It sat in services/, outside the coverage gate, and only ever ran incidentally through the route; moving it into src/nest made the gap measurable (16% branches). The ten cases pin the scoring ladder — exact IATA short-circuit, ICAO over prefix, IATA prefix over city prefix, city prefix over substring — and the missing-dataset fallback, which no test had reached. 90% branches now.