test(ui): adapt SWR contract tests to the cached-resource layer — 692/692

The keeps-data-visible-while-refreshing tests for PeerFiles, Server, and
LightningChannels mounted without Pinia (the converted components now
pull the resources store in setup) — add createPinia to the mounts.
LightningChannelsPanel: refresh the main channel list before the closed
history so the primary entry gets the first response, and null-guard
both fetchers' response shapes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/components/LightningChannelsPanel.vue

@@ -474,9 +474,9 @@ const channelsRes = useCachedResource<ChannelsData>({
       method: 'lnd.listchannels', timeout: 15000, signal, dedup: true, maxRetries: 1,
     })
     return {
-      channels: result.channels || [],
-      total_inbound: result.total_inbound || 0,
-      total_outbound: result.total_outbound || 0,
+      channels: result?.channels || [],
+      total_inbound: result?.total_inbound || 0,
+      total_outbound: result?.total_outbound || 0,
     }
   },
 })
@@ -486,7 +486,7 @@ const closedRes = useCachedResource<ClosedChannel[]>({
     const closed = await rpcClient.call<{ channels: ClosedChannel[] }>({
       method: 'lnd.closedchannels', timeout: 15000, signal, dedup: true, maxRetries: 1,
     })
-    return closed.channels || []
+    return closed?.channels || []
   },
 })
 const loading = computed(() =>
@@ -570,8 +570,9 @@ function capacityPercent(amount: number, capacity: number): number {
 }
 
 function loadChannels(): Promise<void> {
+  const main = channelsRes.refresh()
   void closedRes.refresh()
-  return channelsRes.refresh()
+  return main
 }
 
 function feeParams(): { target_conf?: number; sat_per_vbyte?: number } | null {