@@ -0,0 +1,14 @@
+---
+'@objectstack/plugin-audit': patch
+---
+
+fix(plugin-audit): a user's own write to their own `sys_user_preference` row no longer adds a `sys_activity` row. The `sys_audit_log` row is written as before
+
+Clause-②: no
+
+The console saves the user's "recently visited" list (`ui.recent`), favourites and palette recents as `sys_user_preference` rows as they navigate. The audit writer mirrored each of those writes into `sys_activity`, and the bell's Activity tab lists the newest activity rows the caller may read. So every navigation came back to the user as `Updated User Preference "ui.recent"`, and a fresh user's bell showed nothing else.
+
+- **What changed.** For a per-user UI-state object, the writer skips the activity row when the acting user is the row's owner (`user_id`). The list of such objects is closed and declared beside the writer's exclusion list. Today it holds one object, `sys_user_preference`.
+- **What stays.** The `sys_audit_log` row for the same write is written exactly as before. Another actor's write to a user's preference row keeps its activity row: an organization administrator editing it from Setup, a system write with no user, or a write that gives the row a different owner. Writes to every other object are unchanged.
+- **Existing rows.** Activity rows written before this release are not deleted. They leave the feed when the `sys_activity` retention window (14 days) removes them.
+- **Nothing to migrate.** No configuration is needed.
@@ -686,6 +686,106 @@ describe('audit writers — enable.activities opt-out gate (#2707)', () => {
   });
 });
 
+/**
+ * [#22961] A user's own write to their own per-user UI-state row writes the
+ * ledger row and no activity row. Every other writer keeps today's rows.
+ *
+ * The rows below are the console's "recently visited" write as the real engine
+ * hands it to this hook: the session subject is the owner, and both `result`
+ * and the bound `previous` carry the full row with its `user_id`.
+ */
+describe('audit writers — a user\'s own per-user UI-state write is not mirrored (#22961)', () => {
+  const SCHEMA = {
+    sys_audit_log: SINGLE_TENANT.sys_audit_log,
+    sys_activity: SINGLE_TENANT.sys_activity,
+    sys_user_preference: ['id', 'user_id', 'key', 'value'],
+    crm_lead: ['id', 'name'],
+  };
+  const OWNER = 'u_alice';
+  const PREF = { id: 'pref-1', user_id: OWNER, key: 'ui.recent', value: [] as unknown[] };
+  const rowsOn = (created: CapturedRow[], table: string, object: string) =>
+    created.filter((c) => c.object === table && c.row.object_name === object);
+
+  const OWN_WRITES = [
+    { event: 'afterInsert', action: 'create', ctx: { input: { id: PREF.id }, result: PREF } },
+    {
+      event: 'afterUpdate',
+      action: 'update',
+      ctx: { input: { id: PREF.id }, previous: PREF, result: { ...PREF, value: [{ id: 'acc-1' }] } },
+    },
+    { event: 'afterDelete', action: 'delete', ctx: { input: { id: PREF.id }, previous: PREF, result: { id: PREF.id } } },
+  ] as const;
+
+  for (const w of OWN_WRITES) {
+    it(`the owner's own ${w.action} writes the sys_audit_log row and no sys_activity row`, async () => {
+      const { engine, fire, created } = makeEngine(SCHEMA);
+      installAuditWriters(engine as any, 'test.audit');
+
+      await fire(w.event, { object: 'sys_user_preference', ...w.ctx, session: { userId: OWNER } });
+
+      const ledger = rowsOn(created, 'sys_audit_log', 'sys_user_preference');
+      expect(ledger).toHaveLength(1);
+      expect(ledger[0].row.action).toBe(w.action);
+      expect(ledger[0].row.user_id).toBe(OWNER);
+      expect(ledger[0].row.record_id).toBe(PREF.id);
+      expect(created.filter((c) => c.object === 'sys_activity')).toHaveLength(0);
+    });
+  }
+
+  it('CONTROL: the same user\'s write to an ordinary audited object keeps its activity row', async () => {
+    const { engine, fire, created } = makeEngine(SCHEMA);
+    installAuditWriters(engine as any, 'test.audit');
+
+    await fire('afterUpdate', {
+      object: 'crm_lead',
+      input: { id: 'lead-1' },
+      previous: { id: 'lead-1', name: 'Acme' },
+      result: { id: 'lead-1', name: 'Acme Corp' },
+      session: { userId: OWNER },
+    });
+
+    expect(rowsOn(created, 'sys_audit_log', 'crm_lead')).toHaveLength(1);
+    const activity = rowsOn(created, 'sys_activity', 'crm_lead');
+    expect(activity).toHaveLength(1);
+    expect(activity[0].row.actor_id).toBe(OWNER);
+  });
+
+  const OTHER_WRITERS = [
+    // An organization admin editing the row from Setup's User Preferences grid.
+    { who: 'a write by another user (an admin)', session: { userId: 'u_admin' }, previous: PREF, result: PREF, actor: 'u_admin' },
+    // A system or service write: no acting user at all.
+    { who: 'a system write with no user', session: { isSystem: true }, previous: PREF, result: PREF, actor: null },
+    // The owner moving the row to someone else: not purely their own row.
+    {
+      who: 'the owner moving the row to another user',
+      session: { userId: OWNER },
+      previous: PREF,
+      result: { ...PREF, user_id: 'u_bob' },
+      actor: OWNER,
+    },
+  ] as const;
+
+  for (const w of OTHER_WRITERS) {
+    it(`CONTROL: on a user's preference row, ${w.who} keeps its activity row`, async () => {
+      const { engine, fire, created } = makeEngine(SCHEMA);
+      installAuditWriters(engine as any, 'test.audit');
+
+      await fire('afterUpdate', {
+        object: 'sys_user_preference',
+        input: { id: PREF.id },
+        previous: w.previous,
+        result: { ...w.result, value: [{ id: 'acc-2' }] },
+        session: w.session,
+      });
+
+      expect(rowsOn(created, 'sys_audit_log', 'sys_user_preference')).toHaveLength(1);
+      const activity = rowsOn(created, 'sys_activity', 'sys_user_preference');
+      expect(activity).toHaveLength(1);
+      expect(activity[0].row.actor_id).toBe(w.actor);
+    });
+  }
+});
+
 describe('audit writers — enable.feeds server-side enforcement (#2707)', () => {
   const SCHEMA = {
     sys_audit_log: SINGLE_TENANT.sys_audit_log,
 
@@ -155,6 +155,8 @@ export interface AuditWriterOptions {
  * Skip rules avoid recursion and noise:
  *  - Never audit the audit/activity tables themselves.
  *  - Never audit session/presence/auth tables (high-frequency, low value).
+ *  - A user's own write to their own per-user UI-state row writes the ledger
+ *    row and no activity row (`PER_USER_UI_STATE_OWNER_FIELD`).
  *  - Read-only operations (`afterFind`) are not audited BY THIS WRITER. Since
  *    #8992 the `read` action has its own writer in `read-audit.ts`, installed
  *    separately and only over the objects a deployment opts in: record-detail
@@ -260,6 +262,67 @@ const SKIP_OBJECTS = new Set<string>([
  */
 export const AUDIT_EXCLUDED_OBJECTS: string[] = [...SKIP_OBJECTS];
 
+/**
+ * [#22961] Per-user UI-state objects: the ledger row stays, and the activity
+ * mirror is skipped for the owning user's OWN write only.
+ *
+ * The rule: what reaches a user's bell is another actor's act or something the
+ * user needs, never the user's own UI state. A `sys_activity` row reaches the
+ * bell (its Activity tab lists the newest rows the caller may read). A per-user
+ * UI-state row is re-saved by the client as a side effect of using the
+ * interface, and RLS keeps it private to its user, so the one reader of its
+ * activity row is the user who just caused it. Mirrored, every navigation came
+ * back as `Updated User Preference "ui.recent"`, and a fresh user's bell held
+ * nothing else.
+ *
+ *  - CLOSED and DECLARED: an object is a member only by being listed here,
+ *    mapped to the field that names its owning user. ⛔ Never a name heuristic.
+ *    No spec key means "per-user UI state"; `enable.activities: false` mutes
+ *    every writer, which is wider than this rule.
+ *  - OWN WRITES ONLY: the user the activity row would name (`actor_id`) must be
+ *    the owner on every side of the row the write carries. Another actor's
+ *    write keeps its activity row: an organization admin editing the row from
+ *    Setup's User Preferences grid (`modifyAllRecords` passes the self-only
+ *    RLS), a system write with no user, a write that moves the row to another
+ *    owner.
+ *  - ACTIVITY ONLY: the `sys_audit_log` row is written exactly as before. That
+ *    is why this is not `SKIP_OBJECTS`, which drops the ledger row too and is
+ *    the `AUDIT_EXCLUDED_OBJECTS` list the hook registration and `read-audit.ts`
+ *    share.
+ *
+ * Membership as measured: the console keeps all of its per-user UI state
+ * (`ui.recent`, `ui.favorites`, `ui.flow.palette.recents`) on
+ * `sys_user_preference`, and no other per-user UI-state object exists. A new
+ * one joins by a line here.
+ */
+const PER_USER_UI_STATE_OWNER_FIELD: ReadonlyMap<string, string> = new Map([
+  ['sys_user_preference', 'user_id'],
+]);
+
+/**
+ * Whether this write is a user's own write to their own per-user UI-state row
+ * ({@link PER_USER_UI_STATE_OWNER_FIELD}): the object is listed, an acting user
+ * is known, and every side of the row that names an owner names that user.
+ * A side without the owner field (a delete's result is often just `{ id }`) is
+ * not evidence either way; no side naming an owner at all answers `false`.
+ */
+function isOwnUiStateWrite(
+  object: string,
+  actorUserId: string | undefined,
+  before: unknown,
+  after: unknown,
+): boolean {
+  const ownerField = PER_USER_UI_STATE_OWNER_FIELD.get(object);
+  if (!ownerField || !actorUserId) return false;
+  const owners: string[] = [];
+  for (const side of [before, after]) {
+    if (!side || typeof side !== 'object') continue;
+    const owner = (side as Record<string, unknown>)[ownerField];
+    if (owner !== undefined && owner !== null) owners.push(String(owner));
+  }
+  return owners.length > 0 && owners.every((owner) => owner === actorUserId);
+}
+
 /** Fields that are noise in diffs (always change, never user-meaningful). */
 const NOISE_FIELDS = new Set<string>([
   'updated_at',
@@ -2012,14 +2075,19 @@ export function installAuditWriters(
     // lever for activity-row growth (ADR-0057). The compliance audit row is
     // NOT gated — sys_audit_log capture stays unconditional.
     const activitiesEnabled = getObjectDef(ctx.object)?.enable?.activities !== false;
+    // [#22961] A user's own write to their own per-user UI-state row is not
+    // mirrored either (PER_USER_UI_STATE_OWNER_FIELD states the rule). Judged
+    // on `userId`, the same value `actor_id` would carry. The ledger row is
+    // untouched.
+    const mirrorsActivity = activitiesEnabled && !isOwnUiStateWrite(ctx.object, userId, before, after);
     // [#22510, #22527] The name and avatar of the user `actor_id` names — the
     // SAME `userId`, so the columns cannot disagree about who acted — from one
     // memoized `sys_user` read. Read only when an activity row will be
     // written. No user ⇒ no name and no avatar: ADR-0118 D1 keeps the system
     // actor `null`, and rendering it as "System" (with its icon) is the UI's
     // rule, not data this writer persists.
     const actor: ActorSnapshot =
-      activitiesEnabled && userId ? await resolveActorSnapshot(api, userId) : NO_ACTOR_SNAPSHOT;
+      mirrorsActivity && userId ? await resolveActorSnapshot(api, userId) : NO_ACTOR_SNAPSHOT;
 
     const activityRow: Record<string, any> = {
       type: activityType,
@@ -2055,7 +2123,7 @@ export function installAuditWriters(
       activityRow.organization_id = tenantId ?? null;
     }
 
-    const activityRowToWrite = activitiesEnabled ? activityRow : undefined;
+    const activityRowToWrite = mirrorsActivity ? activityRow : undefined;
     // [#21262] The ledger row is written first; the writer advances this
     // before the activity row, so after a throw it names the refused table.
     const progress: AuditTrailWriteProgress = { writing: 'sys_audit_log' };