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Field setups often relay through a phone/gateway that owns the MQTT connection, so the publishing credential and the instrument are now separate concepts: - Points messages carry a "serial" identifying the locator receiver; unknown serials are auto-registered as devices in the publisher's org (name "Locator <serial>"). Device.mqttUsername is now optional and serialNumber is unique per org. - LocatePoint gains standard receiver telemetry: frequencyHz, currentMa, signalDb, gainDb, locateMode (PEAK/NULL/BROAD_PEAK/SONDE), phaseDeg, compassDeg, distortionPct, plus GPS quality columns vAccuracy, satellites, hdop. All optional; raw payload still kept. - Migration hand-edited to preserve the generated geom column and its GIST index (Prisma diff wanted to drop both). - REST create/point DTOs, map tooltips, job-detail latest-point readout, devices settings form, seed, and the sample publisher all carry the new fields. - Added .dockerignore for backend/web: COPY . . was clobbering the image's freshly generated Prisma client with the host's stale node_modules, breaking image builds after schema changes. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>