fix(traffic): считать общий пик по совпадающим интервалам

lib/traffic-observations.test.ts

@@ -12,3 +12,7 @@ const stale=projectTrafficObservations({...row,observations:obs},at+90_001);asse
 assert.equal(projectTrafficObservations({...row,observations:{...obs,currentState:"error"}},at).rxNow,null)
 for(const change of [{rxNow:-1},{observations:{...obs,sampledAt:"bad"}},{observations:{...obs,sampledAt:null}},{observations:{...obs,rxSeries:[]}}])assert.throws(()=>projectTrafficObservations({...row,...change},at))
 console.log("traffic observations nullable/zero/gaps/expiry guards tests ok")
+const noPeak=projectTrafficObservations({...row,volumeUnit:"GiB",observations:{...obs,rxPeak:false,txPeak:false}},at)
+assert.equal(noPeak.rxPeak,null);assert.equal(noPeak.txPeak,null);assert.equal(noPeak.rxTotal,0)
+assert.equal(projectTrafficObservations({...row,observations:{...obs,rxPeak:true,txPeak:true}},at).rxPeak,0)
+console.log('aggregate peak confidence overrides bucket confidence; measured zero and volumes retained')