diff --git a/sidecar/index.ts b/sidecar/index.ts
index 23f6ea9..cf9e0f0 100644
--- a/sidecar/index.ts
+++ b/sidecar/index.ts
@@ -5,6 +5,7 @@ import { handleBytesRoute, handleOfficerRoute } from './routes';
 import { getConfig, probe } from './upstream';
 import { API_URL } from '@@/officer-url.mjs';
 import { setProvisionableUsers } from './user-list';
+import { provisionForAccountChange } from './provision-run';
 
 // The officer-jellyfin sidecar. Owns the whole Jellyfin contract for Officer: the instance URL, the access
 // token, the Jellyfin user it belongs to and the DeviceId its sessions are keyed by. The platform API is a
@@ -146,6 +147,10 @@ function handleCommand(cmd: SidecarCommand, reply: ReplyFn) {
     // not a question.
     case 'users:list':
       setProvisionableUsers(cmd.users);
+      // And act on it. Detached deliberately: this reaches out to Jellyfin and can take seconds, while the
+      // command handler is on the socket the platform is waiting on. Nothing replies to `users:list`, so
+      // there is no answer to delay — but blocking here would stall every later message on this socket.
+      void provisionForAccountChange();
       break;
     default:
       reply({
diff --git a/sidecar/provision-run.ts b/sidecar/provision-run.ts
index 2a94417..e24bae6 100644
--- a/sidecar/provision-run.ts
+++ b/sidecar/provision-run.ts
@@ -1,7 +1,13 @@
-import { listJellyfinAccounts, linkJellyfinAccount, setJellyfinAccountToken } from '../db';
+import { OWNER_USER_ID } from 'officerdb';
+import {
+  getActiveJellyfinCredentials,
+  listJellyfinAccounts,
+  linkJellyfinAccount,
+  setJellyfinAccountToken,
+} from '../db';
 import { mintTokenForLinked, provision, type ProvisionOutcome } from './provision';
 import { getProvisionableUsers, hasProvisionableUsers } from './user-list';
-import { invalidateConfig, type UpstreamTarget } from './upstream';
+import { invalidateConfig, normalizeBase, type UpstreamTarget } from './upstream';
 
 // The one place that turns "an admin just connected" into accounts on the server.
 //
@@ -165,3 +171,57 @@ export async function backfillAccountTokens(params: {
 
   return report;
 }
+
+/**
+ * Provision because the ACCOUNT LIST changed, rather than because somebody asked.
+ *
+ * This is what makes an Officer account created next month reach Video without anyone remembering that a
+ * plugin needed telling. `users:list` arrives on every create and delete — and on every sidecar
+ * registration, so a restart is also a reconciliation.
+ *
+ * `runProvisioning` logs its plan either way, so a restart prints a few lines describing the world as this
+ * plugin sees it; only the "something changed" summary below is suppressed when nothing did.
+ *
+ * Safe unattended because of what `runProvisioning` already does and does not do: it creates the accounts
+ * that are missing and gives each a token, and it RECORDS an adopted account without touching it. Minting
+ * for an adopted account is the destructive path — it resets a password its owner knows — and that stays
+ * behind `backfillAccountTokens({ includeAdopted: true })`, which only a person can ask for.
+ *
+ * Never throws. It runs detached from the command handler, and a plugin failing to provision must not take
+ * down the socket carrying the message.
+ */
+export async function provisionForAccountChange(): Promise<void> {
+  try {
+    // The server members inherit is the owner's selected one. A member who registered a Jellyfin of their
+    // own is not a provisioning target — that is their connection, not a shared library.
+    const creds = await getActiveJellyfinCredentials(OWNER_USER_ID);
+    if (!creds) return; // nothing connected yet; connecting is itself a provisioning trigger
+
+    const report = await runProvisioning({
+      userId: OWNER_USER_ID,
+      serverId: creds.id,
+      base: normalizeBase(creds.url),
+      token: creds.accessToken,
+      jellyfinUserId: creds.jellyfinUserId,
+      deviceId: creds.deviceId,
+    });
+
+    if (!report.ran) {
+      console.log(`[jellyfin:provision] not run — ${report.reason}`);
+      return;
+    }
+    if (report.created === 0 && report.linked === 0 && report.failed.length === 0) return; // nothing changed
+
+    console.log(
+      `[jellyfin:provision] account list changed: ${report.created} created, ${report.linked} linked`,
+    );
+    if (report.linked > 0) {
+      console.log(
+        '[jellyfin:provision]   a linked account had a Jellyfin login already and has no token yet — ' +
+          'POST /_config/<id>/provision with { "includeAdopted": true } to give it one.',
+      );
+    }
+  } catch (error) {
+    console.error('[jellyfin:provision] automatic run failed:', error instanceof Error ? error.message : error);
+  }
+}