feat(mcp): подготовить сервер и доступ к приёмке

lib/speed-probe-snapshot.ts

@@ -0,0 +1,15 @@
+import { emptySpeedProbeObservations, sameSpeedMeasurement, type SpeedMeasurementParameters, type SpeedProbeRead } from "@mmapp/contracts"
+type Observations = Pick<SpeedProbeRead, keyof typeof emptySpeedProbeObservations>
+type Pair = { id: string } & SpeedMeasurementParameters
+/** Publish confirmed configuration while preserving the latest snapshot only for the same measurement parameters. */
+export function publishSpeedProbeSnapshots<T extends Pair & Partial<Observations>>(previous: readonly T[], next: readonly T[]) {
+  const byId = new Map(previous.map(row => [row.id, row]))
+  return next.map(row => {
+    const old = byId.get(row.id)
+    if (!old || !sameSpeedMeasurement(old, row)) {
+      return { ...row, ...emptySpeedProbeObservations }
+    }
+    const observations = Object.fromEntries(Object.keys(emptySpeedProbeObservations).map(key => [key, old[key as keyof Observations] ?? null])) as Observations
+    return { ...row, ...observations }
+  })
+}