One elapsed-time notation: ago() reads dur's units app-wide, health runs cell widened

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WgBfkm4rCmtd1T4vHWjEPx

frontend/src/components/Flow/EdgeInspector.tsx

@@ -6,6 +6,7 @@ import { Marquee } from "@/components/Common/Marquee"
 import { Button } from "@/components/ui/button"
 import { Popover, PopoverAnchor, PopoverContent } from "@/components/ui/popover"
 import useCustomToast from "@/hooks/useCustomToast"
+import { ago } from "@/lib/utils"
 import { displayName } from "./deriveEdges"
 import { useLiveValue } from "./liveStore"
 import { MessageSparkline } from "./MessageSparkline"
@@ -13,11 +14,7 @@ import { ValuePreview } from "./ValuePreview"
 
 export function relativeTime(ts: number | null | undefined): string {
   if (!ts) return "not seen yet"
-  const seconds = Math.max(0, Math.round(Date.now() / 1000 - ts))
-  if (seconds < 5) return "just now"
-  if (seconds < 60) return `${seconds}s ago`
-  if (seconds < 3600) return `${Math.round(seconds / 60)}m ago`
-  return `${Math.round(seconds / 3600)}h ago`
+  return Date.now() / 1000 - ts < 5 ? "just now" : ago(ts)
 }
 
 /**