fix: host key updates not syncing, metrics 404 race on first connect

Host key writes never bumped updatedAt so sync never picked them up.
Also retry the first metrics fetch briefly instead of failing right away.

src/backend/database/repositories/host-resolution-repository.ts

@@ -1,4 +1,4 @@
-import { and, eq, inArray, isNotNull } from "drizzle-orm";
+import { and, eq, inArray, isNotNull, sql } from "drizzle-orm";
 import { hosts, sshCredentials, sshFolders } from "../db/schema.js";
 import type { DatabaseContext } from "./database-context.js";
 import { DataCrypto } from "../../utils/data-crypto.js";
@@ -326,6 +326,7 @@ export class HostResolutionRepository {
         hostKeyAlgorithm: algorithm,
         hostKeyFirstSeen: now,
         hostKeyLastVerified: now,
+        updatedAt: sql`CURRENT_TIMESTAMP`,
       })
       .where(eq(hosts.id, hostId));
     await this.afterWrite();
@@ -347,6 +348,7 @@ export class HostResolutionRepository {
         hostKeyAlgorithm: algorithm,
         hostKeyLastVerified: now,
         hostKeyChangedCount: currentChangeCount + 1,
+        updatedAt: sql`CURRENT_TIMESTAMP`,
       })
       .where(eq(hosts.id, hostId));
     await this.afterWrite();
@@ -358,7 +360,7 @@ export class HostResolutionRepository {
   ): Promise<void> {
     await this.context.drizzle
       .update(hosts)
-      .set({ hostKeyLastVerified: now })
+      .set({ hostKeyLastVerified: now, updatedAt: sql`CURRENT_TIMESTAMP` })
       .where(eq(hosts.id, hostId));
     await (this.onLazyWrite?.() ?? this.afterWrite());
   }

src/ui/features/host-metrics/HostMetricsTab.tsx

@@ -373,7 +373,15 @@ function HostMetricsInner({
       if (result.viewerSessionId) setViewerSessionId(result.viewerSessionId);
     }
 
-    const data = await getServerMetricsById(currentHostConfig.id);
+    // The connect above only opens the SSH session; the first real sample is
+    // collected asynchronously on the backend (status check, then metrics
+    // exec), so it isn't ready the instant the connection succeeds. Give it
+    // a few short retries before treating the initial fetch as a failure.
+    let data = await getServerMetricsById(currentHostConfig.id);
+    for (let i = 0; !data && i < 5; i++) {
+      await new Promise((resolve) => setTimeout(resolve, 1500));
+      data = await getServerMetricsById(currentHostConfig.id);
+    }
     if (!data) {
       throw new Error(t("hostMetrics.connectionFailed"));
     }