refactor(status): reuse plugin-sdk status helpers

extensions/nostr/src/channel.ts

@@ -1,5 +1,7 @@
 import {
   buildChannelConfigSchema,
+  collectStatusIssuesFromLastError,
+  createDefaultChannelRuntimeState,
   DEFAULT_ACCOUNT_ID,
   formatPairingApproveHint,
   type ChannelPlugin,
@@ -157,28 +159,8 @@ export const nostrPlugin: ChannelPlugin<ResolvedNostrAccount> = {
   },
 
   status: {
-    defaultRuntime: {
-      accountId: DEFAULT_ACCOUNT_ID,
-      running: false,
-      lastStartAt: null,
-      lastStopAt: null,
-      lastError: null,
-    },
-    collectStatusIssues: (accounts) =>
-      accounts.flatMap((account) => {
-        const lastError = typeof account.lastError === "string" ? account.lastError.trim() : "";
-        if (!lastError) {
-          return [];
-        }
-        return [
-          {
-            channel: "nostr",
-            accountId: account.accountId,
-            kind: "runtime" as const,
-            message: `Channel error: ${lastError}`,
-          },
-        ];
-      }),
+    defaultRuntime: createDefaultChannelRuntimeState(DEFAULT_ACCOUNT_ID),
+    collectStatusIssues: (accounts) => collectStatusIssuesFromLastError("nostr", accounts),
     buildChannelSummary: ({ snapshot }) => ({
       configured: snapshot.configured ?? false,
       publicKey: snapshot.publicKey ?? null,