diff --git a/artifacts/api-server/src/routes/groups.ts b/artifacts/api-server/src/routes/groups.ts
index 7ff4ad71..06114e16 100644
--- a/artifacts/api-server/src/routes/groups.ts
+++ b/artifacts/api-server/src/routes/groups.ts
@@ -395,11 +395,6 @@ router.patch("/groups/:id", requireAdmin, async (req, res): Promise<void> => {
 // Sub-resource assignment endpoints — explicit add/remove for users, apps, roles.
 // These complement the aggregate PATCH /groups/:id by exposing single-link writes.
 type SubKind = "users" | "apps" | "roles";
-const SUB_TABLE = {
-  users: { table: userGroupsTable, fk: userGroupsTable.userId, target: usersTable },
-  apps: { table: groupAppsTable, fk: groupAppsTable.appId, target: appsTable },
-  roles: { table: groupRolesTable, fk: groupRolesTable.roleId, target: rolesTable },
-} as const;
 
 function isSubKind(k: string): k is SubKind {
   return k === "users" || k === "apps" || k === "roles";
@@ -410,6 +405,41 @@ async function ensureGroup(id: number) {
   return g;
 }
 
+// Capture the human-readable name for the linked record so audit log entries
+// remain meaningful even after the user/app/role is later deleted.
+async function loadSubResourceNameFields(
+  kind: SubKind,
+  targetId: number,
+): Promise<Record<string, unknown> | null> {
+  if (kind === "users") {
+    const [row] = await db
+      .select({ id: usersTable.id, username: usersTable.username })
+      .from(usersTable)
+      .where(eq(usersTable.id, targetId));
+    if (!row) return null;
+    return { username: row.username };
+  }
+  if (kind === "apps") {
+    const [row] = await db
+      .select({
+        id: appsTable.id,
+        slug: appsTable.slug,
+        nameAr: appsTable.nameAr,
+        nameEn: appsTable.nameEn,
+      })
+      .from(appsTable)
+      .where(eq(appsTable.id, targetId));
+    if (!row) return null;
+    return { appSlug: row.slug, appNameAr: row.nameAr, appNameEn: row.nameEn };
+  }
+  const [row] = await db
+    .select({ id: rolesTable.id, name: rolesTable.name })
+    .from(rolesTable)
+    .where(eq(rolesTable.id, targetId));
+  if (!row) return null;
+  return { roleName: row.name };
+}
+
 router.post("/groups/:id/:kind/:targetId", requireAdmin, async (req, res): Promise<void> => {
   const id = Number(req.params.id);
   const targetId = Number(req.params.targetId);
@@ -423,9 +453,8 @@ router.post("/groups/:id/:kind/:targetId", requireAdmin, async (req, res): Promi
     res.status(404).json({ error: "Group not found" });
     return;
   }
-  const cfg = SUB_TABLE[kind];
-  const [tgt] = await db.select({ id: cfg.target.id }).from(cfg.target).where(eq(cfg.target.id, targetId));
-  if (!tgt) {
+  const nameFields = await loadSubResourceNameFields(kind, targetId);
+  if (!nameFields) {
     res.status(404).json({ error: `${kind.slice(0, -1)} not found` });
     return;
   }
@@ -462,6 +491,7 @@ router.post("/groups/:id/:kind/:targetId", requireAdmin, async (req, res): Promi
       metadata: {
         groupName: group.name,
         [`${subject}Id`]: targetId,
+        ...nameFields,
       },
     });
   }
@@ -505,6 +535,10 @@ router.delete("/groups/:id/:kind/:targetId", requireAdmin, async (req, res): Pro
   }
   if (removed.length > 0) {
     const subject = kind === "users" ? "user" : kind === "apps" ? "app" : "role";
+    // Best-effort: if the linked record still exists capture its name so the
+    // log entry stays readable after a future delete. If it's already gone
+    // we just record the id as before.
+    const nameFields = (await loadSubResourceNameFields(kind, targetId)) ?? {};
     await db.insert(auditLogsTable).values({
       actorUserId: req.session.userId ?? null,
       action: `group.${subject}.remove`,
@@ -513,6 +547,7 @@ router.delete("/groups/:id/:kind/:targetId", requireAdmin, async (req, res): Pro
       metadata: {
         groupName: group.name,
         [`${subject}Id`]: targetId,
+        ...nameFields,
       },
     });
   }
diff --git a/artifacts/tx-os/public/opengraph.jpg b/artifacts/tx-os/public/opengraph.jpg
index 5fc27c2a..6fc17434 100644
Binary files a/artifacts/tx-os/public/opengraph.jpg and b/artifacts/tx-os/public/opengraph.jpg differ
diff --git a/artifacts/tx-os/src/locales/ar.json b/artifacts/tx-os/src/locales/ar.json
index 9f4d43e3..71dee099 100644
--- a/artifacts/tx-os/src/locales/ar.json
+++ b/artifacts/tx-os/src/locales/ar.json
@@ -627,6 +627,7 @@
         "app": {
           "create": "تم إنشاء التطبيق '{{name}}'",
           "update": "تم تعديل التطبيق '{{name}}' ({{changes}})",
+          "rename": "تمت إعادة تسمية التطبيق من '{{previousName}}' إلى '{{name}}'",
           "delete": "تم حذف التطبيق '{{name}}'",
           "forceDelete": "تم حذف التطبيق '{{name}}' قسراً (تأثرت {{groups}})"
         },
@@ -636,14 +637,21 @@
         "group": {
           "create": "تم إنشاء المجموعة '{{name}}' ({{members}}، {{apps}})",
           "update": "تم تعديل المجموعة '{{name}}' ({{changes}})",
+          "rename": "تمت إعادة تسمية المجموعة من '{{previousName}}' إلى '{{name}}'",
           "delete": "تم حذف المجموعة '{{name}}'",
           "forceDelete": "تم حذف المجموعة '{{name}}' قسراً ({{members}})",
-          "userAdd": "تمت إضافة المستخدم #{{userId}} إلى المجموعة '{{name}}'",
-          "userRemove": "تمت إزالة المستخدم #{{userId}} من المجموعة '{{name}}'",
-          "appAdd": "تمت إضافة التطبيق #{{appId}} إلى المجموعة '{{name}}'",
-          "appRemove": "تمت إزالة التطبيق #{{appId}} من المجموعة '{{name}}'",
-          "roleAdd": "تمت إضافة الدور #{{roleId}} إلى المجموعة '{{name}}'",
-          "roleRemove": "تمت إزالة الدور #{{roleId}} من المجموعة '{{name}}'"
+          "userAdd": "تمت إضافة المستخدم @{{username}} إلى المجموعة '{{name}}'",
+          "userAddById": "تمت إضافة المستخدم #{{userId}} إلى المجموعة '{{name}}'",
+          "userRemove": "تمت إزالة المستخدم @{{username}} من المجموعة '{{name}}'",
+          "userRemoveById": "تمت إزالة المستخدم #{{userId}} من المجموعة '{{name}}'",
+          "appAdd": "تمت إضافة التطبيق '{{appName}}' إلى المجموعة '{{name}}'",
+          "appAddById": "تمت إضافة التطبيق #{{appId}} إلى المجموعة '{{name}}'",
+          "appRemove": "تمت إزالة التطبيق '{{appName}}' من المجموعة '{{name}}'",
+          "appRemoveById": "تمت إزالة التطبيق #{{appId}} من المجموعة '{{name}}'",
+          "roleAdd": "تمت إضافة الدور '{{roleName}}' إلى المجموعة '{{name}}'",
+          "roleAddById": "تمت إضافة الدور #{{roleId}} إلى المجموعة '{{name}}'",
+          "roleRemove": "تمت إزالة الدور '{{roleName}}' من المجموعة '{{name}}'",
+          "roleRemoveById": "تمت إزالة الدور #{{roleId}} من المجموعة '{{name}}'"
         },
         "role": {
           "create": "تم إنشاء الدور '{{name}}'",
@@ -658,7 +666,11 @@
           "forceDelete": "تم حذف الخدمة '{{name}}' قسراً (تأثرت {{orders}})"
         },
         "settings": {
-          "update": "تم تحديث إعدادات النظام ({{changes}})"
+          "update": "تم تحديث إعدادات النظام ({{changes}})",
+          "registrationOpened": "تم فتح التسجيل العام",
+          "registrationClosed": "تم إغلاق التسجيل العام",
+          "registrationOpenedWith": "تم فتح التسجيل العام و{{others}}",
+          "registrationClosedWith": "تم إغلاق التسجيل العام و{{others}}"
         },
         "user": {
           "delete": "تم حذف المستخدم @{{username}}",
diff --git a/artifacts/tx-os/src/locales/en.json b/artifacts/tx-os/src/locales/en.json
index 6212a068..b2a09ec0 100644
--- a/artifacts/tx-os/src/locales/en.json
+++ b/artifacts/tx-os/src/locales/en.json
@@ -564,6 +564,7 @@
         "app": {
           "create": "Created app '{{name}}'",
           "update": "Updated app '{{name}}' ({{changes}})",
+          "rename": "Renamed app '{{previousName}}' to '{{name}}'",
           "delete": "Deleted app '{{name}}'",
           "forceDelete": "Force-deleted app '{{name}}' (affected {{groups}})"
         },
@@ -573,14 +574,21 @@
         "group": {
           "create": "Created group '{{name}}' ({{members}}, {{apps}})",
           "update": "Updated group '{{name}}' ({{changes}})",
+          "rename": "Renamed group '{{previousName}}' to '{{name}}'",
           "delete": "Deleted group '{{name}}'",
           "forceDelete": "Force-deleted group '{{name}}' ({{members}})",
-          "userAdd": "Added user #{{userId}} to group '{{name}}'",
-          "userRemove": "Removed user #{{userId}} from group '{{name}}'",
-          "appAdd": "Added app #{{appId}} to group '{{name}}'",
-          "appRemove": "Removed app #{{appId}} from group '{{name}}'",
-          "roleAdd": "Added role #{{roleId}} to group '{{name}}'",
-          "roleRemove": "Removed role #{{roleId}} from group '{{name}}'"
+          "userAdd": "Added @{{username}} to group '{{name}}'",
+          "userAddById": "Added user #{{userId}} to group '{{name}}'",
+          "userRemove": "Removed @{{username}} from group '{{name}}'",
+          "userRemoveById": "Removed user #{{userId}} from group '{{name}}'",
+          "appAdd": "Added app '{{appName}}' to group '{{name}}'",
+          "appAddById": "Added app #{{appId}} to group '{{name}}'",
+          "appRemove": "Removed app '{{appName}}' from group '{{name}}'",
+          "appRemoveById": "Removed app #{{appId}} from group '{{name}}'",
+          "roleAdd": "Added role '{{roleName}}' to group '{{name}}'",
+          "roleAddById": "Added role #{{roleId}} to group '{{name}}'",
+          "roleRemove": "Removed role '{{roleName}}' from group '{{name}}'",
+          "roleRemoveById": "Removed role #{{roleId}} from group '{{name}}'"
         },
         "role": {
           "create": "Created role '{{name}}'",
@@ -595,7 +603,11 @@
           "forceDelete": "Force-deleted service '{{name}}' (affected {{orders}})"
         },
         "settings": {
-          "update": "Updated system settings ({{changes}})"
+          "update": "Updated system settings ({{changes}})",
+          "registrationOpened": "Opened public registration",
+          "registrationClosed": "Closed public registration",
+          "registrationOpenedWith": "Opened public registration and {{others}}",
+          "registrationClosedWith": "Closed public registration and {{others}}"
         },
         "user": {
           "delete": "Deleted user @{{username}}",
diff --git a/artifacts/tx-os/src/pages/admin.tsx b/artifacts/tx-os/src/pages/admin.tsx
index 6567c276..6b82f936 100644
--- a/artifacts/tx-os/src/pages/admin.tsx
+++ b/artifacts/tx-os/src/pages/admin.tsx
@@ -4310,6 +4310,13 @@ function appName(meta: Record<string, unknown>, lang: string, fallbackId: AuditL
   return preferred ?? slug ?? `#${fallbackId ?? "?"}`;
 }
 
+function linkedAppName(meta: Record<string, unknown>, lang: string): string | null {
+  const en = asString(meta.appNameEn);
+  const ar = asString(meta.appNameAr);
+  const slug = asString(meta.appSlug);
+  return (lang === "ar" ? ar ?? en : en ?? ar) ?? slug ?? null;
+}
+
 function plainName(meta: Record<string, unknown>, fallbackId: AuditLogEntry["targetId"]): string {
   return asString(meta.name) ?? `#${fallbackId ?? "?"}`;
 }
@@ -4347,11 +4354,29 @@ function formatAuditSummary(
       return t("admin.audit.summary.app.create", {
         name: appName(meta, lang, targetId),
       });
-    case "app.update":
+    case "app.update": {
+      const name = appName(meta, lang, targetId);
+      const changes = asRecord(meta.changes);
+      const order = lang === "ar"
+        ? ["nameAr", "nameEn", "slug"]
+        : ["nameEn", "nameAr", "slug"];
+      for (const field of order) {
+        if (!(field in changes)) continue;
+        const change = asRecord(changes[field]);
+        const previousName = asString(change.from);
+        const nextName = asString(change.to);
+        if (previousName && nextName && previousName !== nextName) {
+          return t("admin.audit.summary.app.rename", {
+            previousName,
+            name: nextName,
+          });
+        }
+      }
       return t("admin.audit.summary.app.update", {
-        name: appName(meta, lang, targetId),
+        name,
         changes: unitLabel(t, "change", changeCount(meta)),
       });
+    }
     case "app.delete": {
       const name = appName(meta, lang, targetId);
       if (meta.force) {
@@ -4373,11 +4398,21 @@ function formatAuditSummary(
         members: unitLabel(t, "member", asNumber(meta.memberCount) ?? 0),
         apps: unitLabel(t, "app", asNumber(meta.appCount) ?? 0),
       });
-    case "group.update":
+    case "group.update": {
+      const name = plainName(meta, targetId);
+      const previousName = asString(meta.previousName);
+      const fieldsChanged = changeCount(meta);
+      if (previousName && previousName !== name && fieldsChanged <= 1) {
+        return t("admin.audit.summary.group.rename", {
+          previousName,
+          name,
+        });
+      }
       return t("admin.audit.summary.group.update", {
-        name: plainName(meta, targetId),
-        changes: unitLabel(t, "change", Math.max(1, changeCount(meta))),
+        name,
+        changes: unitLabel(t, "change", Math.max(1, fieldsChanged)),
       });
+    }
     case "group.delete": {
       const name = plainName(meta, targetId);
       if (meta.force) {
@@ -4389,36 +4424,66 @@ function formatAuditSummary(
       }
       return t("admin.audit.summary.group.delete", { name });
     }
-    case "group.user.add":
-      return t("admin.audit.summary.group.userAdd", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        userId: asNumber(meta.userId) ?? "?",
-      });
-    case "group.user.remove":
-      return t("admin.audit.summary.group.userRemove", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        userId: asNumber(meta.userId) ?? "?",
-      });
-    case "group.app.add":
-      return t("admin.audit.summary.group.appAdd", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        appId: asNumber(meta.appId) ?? "?",
-      });
-    case "group.app.remove":
-      return t("admin.audit.summary.group.appRemove", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        appId: asNumber(meta.appId) ?? "?",
-      });
-    case "group.role.add":
-      return t("admin.audit.summary.group.roleAdd", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        roleId: asNumber(meta.roleId) ?? "?",
-      });
-    case "group.role.remove":
-      return t("admin.audit.summary.group.roleRemove", {
-        name: asString(meta.groupName) ?? `#${targetId ?? "?"}`,
-        roleId: asNumber(meta.roleId) ?? "?",
-      });
+    case "group.user.add": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const username = asString(meta.username);
+      return username
+        ? t("admin.audit.summary.group.userAdd", { name: groupName, username })
+        : t("admin.audit.summary.group.userAddById", {
+            name: groupName,
+            userId: asNumber(meta.userId) ?? "?",
+          });
+    }
+    case "group.user.remove": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const username = asString(meta.username);
+      return username
+        ? t("admin.audit.summary.group.userRemove", { name: groupName, username })
+        : t("admin.audit.summary.group.userRemoveById", {
+            name: groupName,
+            userId: asNumber(meta.userId) ?? "?",
+          });
+    }
+    case "group.app.add": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const appNm = linkedAppName(meta, lang);
+      return appNm
+        ? t("admin.audit.summary.group.appAdd", { name: groupName, appName: appNm })
+        : t("admin.audit.summary.group.appAddById", {
+            name: groupName,
+            appId: asNumber(meta.appId) ?? "?",
+          });
+    }
+    case "group.app.remove": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const appNm = linkedAppName(meta, lang);
+      return appNm
+        ? t("admin.audit.summary.group.appRemove", { name: groupName, appName: appNm })
+        : t("admin.audit.summary.group.appRemoveById", {
+            name: groupName,
+            appId: asNumber(meta.appId) ?? "?",
+          });
+    }
+    case "group.role.add": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const roleName = asString(meta.roleName);
+      return roleName
+        ? t("admin.audit.summary.group.roleAdd", { name: groupName, roleName })
+        : t("admin.audit.summary.group.roleAddById", {
+            name: groupName,
+            roleId: asNumber(meta.roleId) ?? "?",
+          });
+    }
+    case "group.role.remove": {
+      const groupName = asString(meta.groupName) ?? `#${targetId ?? "?"}`;
+      const roleName = asString(meta.roleName);
+      return roleName
+        ? t("admin.audit.summary.group.roleRemove", { name: groupName, roleName })
+        : t("admin.audit.summary.group.roleRemoveById", {
+            name: groupName,
+            roleId: asNumber(meta.roleId) ?? "?",
+          });
+    }
     case "role.create":
       return t("admin.audit.summary.role.create", {
         name: plainName(meta, targetId),
@@ -4469,10 +4534,31 @@ function formatAuditSummary(
         name: asString(meta.nameEn) ?? `#${targetId ?? "?"}`,
         orders: unitLabel(t, "order", asNumber(meta.orderCount) ?? 0),
       });
-    case "settings.update":
+    case "settings.update": {
+      const changes = asRecord(meta.changes);
+      const totalChanges = Object.keys(changes).length;
+      if ("registrationOpen" in changes) {
+        const change = asRecord(changes.registrationOpen);
+        const opened = change.to === true;
+        const otherCount = totalChanges - 1;
+        if (otherCount <= 0) {
+          return t(
+            opened
+              ? "admin.audit.summary.settings.registrationOpened"
+              : "admin.audit.summary.settings.registrationClosed",
+          );
+        }
+        return t(
+          opened
+            ? "admin.audit.summary.settings.registrationOpenedWith"
+            : "admin.audit.summary.settings.registrationClosedWith",
+          { others: unitLabel(t, "change", otherCount) },
+        );
+      }
       return t("admin.audit.summary.settings.update", {
-        changes: unitLabel(t, "change", changeCount(meta)),
+        changes: unitLabel(t, "change", Math.max(1, totalChanges)),
       });
+    }
     case "user.delete": {
       const username = asString(meta.username) ?? `#${targetId ?? "?"}`;
       return meta.force