fix(uptime): точно разбирать составные длительности RTT

docs/ux-ui/acceptance/ping-duration-local-2026-10-12.json

@@ -0,0 +1,78 @@
+{
+  "date": "2026-10-12",
+  "block": "12.5.176",
+  "passed": true,
+  "method": "offline replay of two real native CHR payloads recorded in173; no new native requests",
+  "checks": [
+    "ping-measurement.test.ts",
+    "backend production build"
+  ],
+  "sourceHashes": {
+    "backend/src/services/uptime-collector.ts": "d9ce980220022eef40f8b98e1cee688f743b662f3e097714b7a246418e254b5e",
+    "backend/src/services/ping-measurement.test.ts": "dc74e2fe004bf11874c18ccba7cd34ffc5f44f199fe59ea9ec6755d2fdcd5c29"
+  },
+  "cases": [
+    {
+      "sourceId": 1,
+      "observations": [
+        {
+          "raw": "53ms561us",
+          "parsedMs": 53.561
+        },
+        {
+          "raw": "53ms191us",
+          "parsedMs": 53.191
+        },
+        {
+          "raw": "53ms352us",
+          "parsedMs": 53.352
+        },
+        {
+          "raw": "53ms231us",
+          "parsedMs": 53.231
+        }
+      ],
+      "parsed": {
+        "avgRtt": 53,
+        "loss": 0,
+        "status": "up",
+        "measured": true
+      }
+    },
+    {
+      "sourceId": 2,
+      "observations": [
+        {
+          "raw": "53ms593us",
+          "parsedMs": 53.593
+        },
+        {
+          "raw": "53ms153us",
+          "parsedMs": 53.153
+        },
+        {
+          "raw": "53ms301us",
+          "parsedMs": 53.301
+        },
+        {
+          "raw": "53ms409us",
+          "parsedMs": 53.409
+        }
+      ],
+      "parsed": {
+        "avgRtt": 53,
+        "loss": 0,
+        "status": "up",
+        "measured": true
+      }
+    }
+  ],
+  "deployed": false,
+  "networkRequests": 0,
+  "databaseWrites": 0,
+  "routerWrites": 0,
+  "remote": {
+    "backend": "ux-traffic175",
+    "frontend": "ux-ping173"
+  }
+}