feat(ui): show per-inbound live speed (#5261)

* feat(utils): add speedFormat utility and tests

* feat(inbounds): add InboundSpeedEntry type

* feat(inbounds): add speed column to inbound list

* feat(inbounds): show speed in inbound stats modal

* feat(inbounds): compute inbound speed from traffic deltas

* feat(inbounds): wire inbound speed through page

* feat(i18n): add speed translation for all locales

* refactor(inbounds): dedupe live-speed UI and harden formatting

Extract a shared InboundSpeedTag component and isActiveSpeed guard used by the speed column and stats modal, unify InboundSpeedEntry into a single type, and route speedFormat through sizeFormat.

Also guard sizeFormat against non-finite input (no more "NaN PB/s") and clear stale per-inbound speeds when a traffic poll returns no deltas.

---------

Co-authored-by: Sanaei <ho3ein.sanaei@gmail.com>

frontend/src/pages/inbounds/list/InboundList.tsx

@@ -36,6 +36,7 @@ export default function InboundList({
   dbInbounds,
   clientCount,
   lastOnlineMap: _lastOnlineMap,
+  inboundSpeed,
   expireDiff,
   trafficDiff,
   pageSize,
@@ -124,6 +125,7 @@ export default function InboundList({
     hasActiveNode,
     nodesById,
     clientCount,
+    inboundSpeed,
     subEnable,
     expireDiff,
     trafficDiff,
@@ -271,6 +273,7 @@ export default function InboundList({
         hasActiveNode={hasActiveNode}
         nodesById={nodesById}
         clientCount={clientCount}
+        inboundSpeed={inboundSpeed}
         trafficDiff={trafficDiff}
         expireDiff={expireDiff}
         onClose={() => setStatsRecord(null)}