chore: v2.8.11 — switch a pool account's users from its Edit

Each account row in the Account pool card has a pencil: tick the users
whose sessions run on it (one moves off any other account, unticking sends
one back to the balancer). PUT /api/accounts/:name/users saves the set in one
transaction, audits each change and switches a Claude login into each added
user's home at once. The card-level switch button and pinned list are gone.

bin/agenthub.js

@@ -2855,8 +2855,8 @@ const COMMAND_GROUPS = [
       ],
       [
         "accounts",
-        "list|add|remove [name] [--tool codex]",
+        "list|add|remove [name]|pin <account> <user>|unpin <user> [--tool codex]",
-        "Claude/Codex account pool: new sessions spread over these accounts",
+        "Claude/Codex account pool: new sessions spread over these accounts; pin = one user always on one",
       ],
       ["repl", "", "Open the interactive shell (also: shell, i)"],
     ],
@@ -3814,7 +3814,7 @@ const SUBCOMMANDS = {
   service: ["install", "uninstall", "status"],
   server: ["setup", "off", "status"],
   users: ["list", "add", "passwd", "role", "disable", "enable", "assign", "audit"],
-  accounts: ["list", "add", "remove"],
+  accounts: ["list", "add", "remove", "pin", "unpin"],
   pricing: ["set", "delete", "reset"],
   webhooks: ["test"],
   import: ["rescan", "path"],
@@ -4286,7 +4286,18 @@ async function cmdCodexAccounts(sub, name, flags) {
   }
   pool.resetQuota();
   table(
-    ["codex account", "kind", "live", "$ 5h", "$ 7d", "tok 5h", "tok 7d", "quota", "state"],
+    [
+      "codex account",
+      "kind",
+      "live",
+      "$ 5h",
+      "$ 7d",
+      "tok 5h",
+      "tok 7d",
+      "quota",
+      "state",
+      "pinned",
+    ],
     pool
       .poolStatus()
       .map((a) => [
@@ -4301,10 +4312,64 @@ async function cmdCodexAccounts(sub, name, flags) {
           ? a.quota.windows.map((w) => `${w.label} ${Math.round(w.usedPercent)}%`).join(" ")
           : "–",
         a.full ? "full" : "ok",
+        pinnedUsers("codex", a.name),
       ])
   );
 }
 
+/**
+ * `agenthub accounts pin <account> <user>` / `unpin <user>` [--tool codex] —
+ * that user's new sessions run on that account (server/lib/account-pins.js).
+ */
+async function cmdAccountPin(sub, positional, tool) {
+  const pins = require(path.join(REPO_ROOT, "server", "lib", "account-pins.js"));
+  const [first, second] = positional;
+  const username = sub === "pin" ? second : first;
+  if (!username || (sub === "pin" && !first)) {
+    throw new Error("usage: agenthub accounts pin <account> <user> | unpin <user> [--tool codex]");
+  }
+  const user = require(path.join(REPO_ROOT, "server", "db.js"))
+    .db.prepare("SELECT id FROM users WHERE username = ?")
+    .get(username);
+  if (!user) throw new Error(`no user ${username}`);
+  const pin = pins.setPin(user.id, tool, sub === "pin" ? first : null);
+  if (!require(path.join(REPO_ROOT, "server", "lib", "auth.js")).isServerMode()) {
+    console.log(c.dim("  Pins apply in server mode only."));
+  }
+  if (!pin.account) {
+    console.log(`${c.green("✔")} ${pin.username} unpinned — new ${tool} sessions use the balancer`);
+    return;
+  }
+  const switched = await pins.applyPin(user.id, tool);
+  console.log(`${c.green("✔")} ${pin.username}'s ${tool} sessions run on ${pin.account}`);
+  console.log(c.dim(`  ${SWITCH_NOTE[switched] || SWITCH_NOTE["next-session"]}`));
+}
+
+/** What `applyPin` did, for the CLI. */
+const SWITCH_NOTE = {
+  switched: "Switched now: running sessions take it at their next login check, new ones at once.",
+  kept: "Their home already holds it.",
+  "own-login":
+    "They signed in with their own login, which is left alone: no pool login is written over it.",
+  expired: "That login has expired: new sessions fall back to the balancer until it is re-added.",
+  "next-session": "New sessions use it; running ones keep their account until they end.",
+};
+
+/** The `pinned` column: who an admin pinned to `account`. */
+function pinnedUsers(tool, account) {
+  try {
+    return (
+      require(path.join(REPO_ROOT, "server", "lib", "account-pins.js"))
+        .listPins(tool)
+        .filter((p) => p.account === account)
+        .map((p) => p.username)
+        .join(",") || "–"
+    );
+  } catch {
+    return "–";
+  }
+}
+
 /** `agenthub accounts …` — the Claude account pool (server/lib/claude-pool.js). */
 async function cmdAccounts(sub, positional, flags = {}) {
   serverAuth(); // the same settings + database the server reads
@@ -4316,6 +4381,8 @@ async function cmdAccounts(sub, positional, flags = {}) {
   if (flags.tool != null && flags.tool !== "claude" && flags.tool !== "codex") {
     throw new Error("--tool is claude (the default) or codex");
   }
+  if (sub === "pin" || sub === "unpin")
+    return cmdAccountPin(sub, positional, flags.tool || "claude");
   if (flags.tool === "codex") return cmdCodexAccounts(sub, name, flags);
   if (sub === "add") {
     console.log(
@@ -4337,7 +4404,18 @@ async function cmdAccounts(sub, positional, flags = {}) {
     await pool.refreshQuotas({ force: true });
     const pct = (w) => (w?.utilization != null ? `${Math.round(w.utilization)}%` : "–");
     table(
-      ["account", "live", "$ 5h", "$ 7d", "tok 5h", "tok 7d", "quota 5h", "quota wk", "state"],
+      [
+        "account",
+        "live",
+        "$ 5h",
+        "$ 7d",
+        "tok 5h",
+        "tok 7d",
+        "quota 5h",
+        "quota wk",
+        "state",
+        "pinned",
+      ],
       pool
         .poolStatus()
         .map((a) => [
@@ -4356,6 +4434,7 @@ async function cmdAccounts(sub, positional, flags = {}) {
               : a.quota?.error
                 ? `no quota (${a.quota.error})`
                 : "ok",
+          pinnedUsers("claude", a.name),
         ])
     );
     const codex = require(path.join(REPO_ROOT, "server", "lib", "codex-pool.js"));
@@ -4363,7 +4442,9 @@ async function cmdAccounts(sub, positional, flags = {}) {
     return;
   }
   console.error(
-    c.red("✖ Usage: agenthub accounts list | add <name> | remove <name> [--tool codex]")
+    c.red(
+      "✖ Usage: agenthub accounts list | add <name> | remove <name> | pin <account> <user> | unpin <user> [--tool codex]"
+    )
   );
   process.exitCode = 1;
 }

client/src/components/Switch.tsx

@@ -33,13 +33,16 @@ export function Switch({
       // On: the solid accent (white knob clears 3:1 in every theme). Off: a
       // border-light track with an inset fg-muted/80 ring (≥3:1 in every theme), so the control's edge
       // is visible on any surface (surface-4 alone was ~1:1 on a light card).
-      className={`relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 ${
+      // Hover darkens the track (enabled only), so it reads as clickable.
-        checked ? "bg-accent-solid" : "bg-border-light ring-1 ring-inset ring-fg-muted/80"
+      className={`relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 ${
+        checked
+          ? "bg-accent-solid enabled:hover:bg-accent-solid-hover"
+          : "bg-border-light ring-1 ring-inset ring-fg-muted/80 enabled:hover:ring-fg-secondary"
       }`}
     >
       <span
         aria-hidden
-        className={`inline-block h-4 w-4 rounded-full bg-white shadow transition-transform ${
+        className={`inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out ${
           checked ? "translate-x-[18px]" : "translate-x-0.5"
         }`}
       />

client/src/components/settings/AutostartSettings.tsx

@@ -9,17 +9,24 @@
  * boot/login while the switch is on. Between them, the status-area icon switch
  * (`GET/PUT /api/settings/tray`, on by default — server/lib/tray.js). Last,
  * **Uninstall AgentHub**: `POST /api/settings/uninstall` removes AgentHub from
- * the machine, database included (scripts/uninstall.js).
+ * the machine, database included (scripts/uninstall.js). Quit is a plain
+ * button and Uninstall a danger one, both the same width with an icon, and
+ * each spins while its request runs.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
+import { Loader2, Power, Trash2 } from "lucide-react";
 import { api, type AutostartStatus, type TrayStatus } from "../../lib/api";
 import { toast } from "../../lib/toast";
 import { confirmDialog } from "../../lib/confirm";
 import { SettingsRow, SettingsSection, SettingsSwitchRow } from "./SettingsRow";
 
+// The two action buttons share one width, so they line up under the switches.
+const ACTION = "min-w-[6.5rem] justify-center text-xs";
+const ICON = "h-3.5 w-3.5 shrink-0";
+
 export function AutostartSettings() {
   const { t } = useTranslation("settings");
   const [status, setStatus] = useState<AutostartStatus | null>(null);
@@ -126,9 +133,11 @@ export function AutostartSettings() {
             type="button"
             data-testid="quit-agenthub"
             disabled={quitting}
+            aria-busy={quitting}
             onClick={() => void quit()}
-            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+            className={`btn-secondary ${ACTION}`}
           >
+            {quitting ? <Loader2 className={ICON + " animate-spin"} /> : <Power className={ICON} />}
             {t("quit.button")}
           </button>
         }
@@ -141,9 +150,15 @@ export function AutostartSettings() {
             type="button"
             data-testid="uninstall-agenthub"
             disabled={uninstalling}
+            aria-busy={uninstalling}
             onClick={() => void uninstall()}
-            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+            className={`btn-danger ${ACTION}`}
           >
+            {uninstalling ? (
+              <Loader2 className={ICON + " animate-spin"} />
+            ) : (
+              <Trash2 className={ICON} />
+            )}
             {t("uninstall.button")}
           </button>
         }

client/src/components/settings/SettingsRow.tsx

@@ -4,7 +4,8 @@
  * switch row (`SettingsSwitchRow`) and a segmented radio group
  * (`SettingsSegmented`, arrow keys + one roving tab stop). Rows divide
  * themselves with a hairline, none after the last, so a section is just its
- * rows in order.
+ * rows in order. A string description shows its `backticked` words as code,
+ * and a `disabled` row dims its label, so an unavailable control reads as one.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -32,30 +33,55 @@ export function SettingsSection({
   );
 }
 
+/** `text` with every `backticked` run drawn as inline code (a command to type). */
+export function withCode(text: string): ReactNode {
+  const parts = text.split(/`([^`]+)`/);
+  if (parts.length === 1) return text;
+  return parts.map((p, i) =>
+    i % 2 ? (
+      <code
+        key={i}
+        className="whitespace-nowrap rounded border border-border bg-surface-2 px-1 py-px font-mono text-[11px] text-fg-secondary"
+      >
+        {p}
+      </code>
+    ) : (
+      p
+    )
+  );
+}
+
 export function SettingsRow({
   label,
   description,
   control,
   alignTop = false,
+  disabled = false,
   id,
 }: {
   label: ReactNode;
   description?: ReactNode;
   control: ReactNode;
   alignTop?: boolean;
+  /** The control cannot be used here: the label is dimmed with it. */
+  disabled?: boolean;
   /** A deep-link anchor (`#id`) for one row inside a grouped section. */
   id?: string;
 }) {
   return (
     <div
       id={id}
-      className={`${id ? "scroll-mt-24 " : ""}flex justify-between gap-4 border-b border-border/60 last:border-b-0 ${
+      className={`${id ? "scroll-mt-24 " : ""}flex justify-between gap-6 border-b border-border/60 last:border-b-0 ${
         description ? "py-3" : "py-2"
       } ${alignTop ? "items-start" : "items-center"}`}
     >
       <div className="min-w-0">
-        <p className="text-sm text-fg-secondary">{label}</p>
+        <p className={`text-sm ${disabled ? "text-fg-muted" : "text-fg-secondary"}`}>{label}</p>
-        {description && <p className="mt-0.5 text-xs text-fg-muted">{description}</p>}
+        {description && (
+          <p className="mt-0.5 text-xs leading-relaxed text-fg-muted">
+            {typeof description === "string" ? withCode(description) : description}
+          </p>
+        )}
       </div>
       <div className="shrink-0">{control}</div>
     </div>
@@ -82,6 +108,7 @@ export function SettingsSwitchRow({
       id={id}
       label={label}
       description={description}
+      disabled={disabled}
       control={<Switch checked={checked} onChange={onChange} label={label} disabled={disabled} />}
     />
   );

client/src/components/users/AccountPoolCard.tsx

@@ -8,26 +8,31 @@
  * `.credentials.json`, or a `claude setup-token` token; for Codex an OpenAI
  * API key or a pasted `auth.json` — or removes one, each time with their own
  * password again; an analyst only reads. The secret only goes IN: the server
- * never sends it back.
+ * never sends it back. An account's Edit (pencil) picks the users who run on
+ * it (`PUT /api/accounts/:name/users`): their sessions skip the balancer, and
+ * a Claude login goes into their home at once — no restart.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
 import { useCallback, useEffect, useState, type KeyboardEvent, type ReactNode } from "react";
 import { useTranslation } from "react-i18next";
 import type { TFunction } from "i18next";
-import { KeyRound, Plus, RefreshCw, Trash2 } from "lucide-react";
+import { KeyRound, Pencil, Plus, RefreshCw, Trash2 } from "lucide-react";
 import {
   api,
+  type AccountPin,
   type AccountPool,
   type PoolAccountInput,
   type PoolProfile,
   type PoolTool,
+  type ServerUserUsage,
 } from "../../lib/api";
 import { fmt, fmtCost, formatDateTime } from "../../lib/format";
 import { toast } from "../../lib/toast";
 import { isSubmitEnter } from "../../lib/keys";
 import { useSpin } from "../../hooks/useSpin";
 import { ConfirmModal } from "../ConfirmModal";
+import { Checkbox } from "../Checkbox";
 
 type Row = {
   tool: PoolTool;
@@ -59,6 +64,8 @@ function rowsOf(pool: AccountPool): Row[] {
   ];
 }
 
+const pinsOf = (pool: AccountPool, tool: PoolTool): AccountPin[] => pool.pins?.[tool] ?? [];
+
 function errorText(t: TFunction<"users">, e: unknown): string {
   const err = e as Error & { code?: string };
   return err.code && t(`pool.errors.${err.code}`, { defaultValue: "" })
@@ -72,6 +79,7 @@ export function AccountPoolCard({ isAdmin }: { isAdmin: boolean }) {
   const [error, setError] = useState<string | null>(null);
   const [adding, setAdding] = useState(false);
   const [removing, setRemoving] = useState<Row | null>(null);
+  const [editing, setEditing] = useState<Row | null>(null);
 
   const load = useCallback(
     (force = false) =>
@@ -148,6 +156,16 @@ export function AccountPoolCard({ isAdmin }: { isAdmin: boolean }) {
                     <div className="text-[11px] text-fg-muted">
                       {t("pool.added", { at: formatDateTime(r.addedAt) })}
                     </div>
+                    {pool && pinsOf(pool, r.tool).some((p) => p.account === r.name) && (
+                      <div className="text-[11px] text-fg-secondary">
+                        {t("pool.pinned", {
+                          users: pinsOf(pool, r.tool)
+                            .filter((p) => p.account === r.name)
+                            .map((p) => p.username)
+                            .join(", "),
+                        })}
+                      </div>
+                    )}
                   </td>
                   <td className="px-5 py-2.5 text-sm text-fg-secondary">
                     {t(`pool.kind.${r.kind}`)}
@@ -188,7 +206,16 @@ export function AccountPoolCard({ isAdmin }: { isAdmin: boolean }) {
                     </div>
                   </td>
                   {isAdmin && (
-                    <td className="px-5 py-2 text-right">
+                    <td className="px-5 py-2 text-right whitespace-nowrap">
+                      <button
+                        type="button"
+                        onClick={() => setEditing(r)}
+                        title={t("pool.edit", { name: r.name })}
+                        aria-label={t("pool.edit", { name: r.name })}
+                        className="btn-icon"
+                      >
+                        <Pencil className="h-4 w-4" />
+                      </button>
                       <button
                         type="button"
                         onClick={() => setRemoving(r)}
@@ -206,7 +233,6 @@ export function AccountPoolCard({ isAdmin }: { isAdmin: boolean }) {
           </table>
         </div>
       )}
-
       {adding && (
         <AddAccountDialog
           onClose={() => setAdding(false)}
@@ -228,10 +254,163 @@ export function AccountPoolCard({ isAdmin }: { isAdmin: boolean }) {
           }}
         />
       )}
+      {editing && pool && (
+        <EditAccountDialog
+          pool={pool}
+          row={editing}
+          onClose={() => setEditing(null)}
+          onDone={(r) => {
+            const left = r.added.filter(
+              (u) => u.switched === "own-login" || u.switched === "expired"
+            );
+            toast.success(t("pool.editDone", { name: editing.name }));
+            for (const u of left) {
+              toast.info(
+                t(`pool.pinDone.${u.switched}`, { user: u.username, account: editing.name })
+              );
+            }
+            setEditing(null);
+            void load();
+          }}
+        />
+      )}
     </section>
   );
 }
 
+/**
+ * One account's Edit: tick the users whose sessions run on it. A user already
+ * on another account of the tool moves here when ticked; unticking one sends
+ * them back to the least-used account. Saved in one request, password again.
+ */
+function EditAccountDialog({
+  pool,
+  row,
+  onClose,
+  onDone,
+}: {
+  pool: AccountPool;
+  row: Row;
+  onClose: () => void;
+  onDone: (r: Awaited<ReturnType<typeof api.accountPool.setUsers>>) => void;
+}) {
+  const { t } = useTranslation("users");
+  const pins = pinsOf(pool, row.tool);
+  const initial = pins.filter((p) => p.account === row.name).map((p) => p.userId);
+  const [users, setUsers] = useState<ServerUserUsage[] | null>(null);
+  const [chosen, setChosen] = useState<Set<number>>(() => new Set(initial));
+  const [current, setCurrent] = useState("");
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    api.users
+      .list()
+      .then((r) => setUsers(r.users))
+      .catch(() => setUsers([]));
+  }, []);
+
+  const changed = chosen.size !== initial.length || initial.some((id) => !chosen.has(id));
+  const ready = changed && current.length > 0;
+  const toggle = (id: number, on: boolean) =>
+    setChosen((prev) => {
+      const next = new Set(prev);
+      if (on) next.add(id);
+      else next.delete(id);
+      return next;
+    });
+
+  const submit = async () => {
+    if (!ready || busy) return;
+    setBusy(true);
+    setError(null);
+    try {
+      onDone(await api.accountPool.setUsers(row.tool, row.name, [...chosen], current));
+    } catch (e) {
+      setError(errorText(t, e));
+    } finally {
+      setBusy(false);
+    }
+  };
+
+  return (
+    <ConfirmModal
+      open
+      title={t("pool.edit", { name: row.name })}
+      message={t("pool.editHint")}
+      confirmLabel={t("pool.save")}
+      cancelLabel={t("common:cancel")}
+      destructive={false}
+      busy={busy}
+      disabled={!ready}
+      onConfirm={() => void submit()}
+      onCancel={onClose}
+    >
+      <div
+        className="mt-3 space-y-3"
+        onKeyDown={(e) => {
+          if ((e.target as HTMLElement).tagName === "INPUT" && isSubmitEnter(e)) {
+            e.preventDefault();
+            void submit();
+          }
+        }}
+      >
+        <div>
+          <span className="text-xs font-medium text-fg-secondary">{t("pool.users")}</span>
+          <div className="mt-1 max-h-56 overflow-y-auto rounded-md border border-border divide-y divide-border">
+            {users === null && (
+              <p className="px-3 py-2 text-xs text-fg-muted">{t("pool.loadingUsers")}</p>
+            )}
+            {users?.length === 0 && (
+              <p className="px-3 py-2 text-xs text-fg-muted">{t("pool.noUsers")}</p>
+            )}
+            {users?.map((u) => {
+              const elsewhere = pins.find((p) => p.userId === u.id && p.account !== row.name);
+              return (
+                <div key={u.id} className="px-3 py-2">
+                  <Checkbox
+                    checked={chosen.has(u.id)}
+                    onChange={(on) => toggle(u.id, on)}
+                    label={
+                      <span>
+                        {u.username}
+                        {u.disabled && (
+                          <span className="ml-1 text-fg-muted">({t("disabled")})</span>
+                        )}
+                        {elsewhere && (
+                          <span className="ml-1.5 text-[11px] text-fg-muted">
+                            {t("pool.onAccount", { account: elsewhere.account })}
+                          </span>
+                        )}
+                      </span>
+                    }
+                    labelClassName="text-sm text-fg-primary"
+                  />
+                </div>
+              );
+            })}
+          </div>
+        </div>
+        <Field label={t("yourPassword")} hint={t("yourPasswordHint")}>
+          <input
+            type="password"
+            className="input w-full text-sm"
+            value={current}
+            onChange={(e) => setCurrent(e.target.value)}
+            autoComplete="current-password"
+            aria-label={t("yourPassword")}
+          />
+        </Field>
+        {error && (
+          <p role="alert" className="text-xs text-status-danger">
+            {error}
+          </p>
+        )}
+      </div>
+    </ConfirmModal>
+  );
+}
+
 type ClaudeSource = "profile" | "credentials" | "token";
 
 function AddAccountDialog({

client/src/components/users/__tests__/AccountPoolCard.test.tsx

@@ -5,7 +5,8 @@
  * admin adds an account only with their own password typed (the token goes
  * in once and is not shown back) — a saved login moved in (the server's own
  * included), or a setup-token — and removes one the same way, and an analyst
- * sees no add or remove control.
+ * sees no add or remove control. An account's Edit ticks the users who run on
+ * it, saved with the admin's own password; the users show on the account.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -19,10 +20,12 @@ const accountPool = vi.hoisted(() => ({
   add: vi.fn(),
   remove: vi.fn(),
   profiles: vi.fn(),
+  setUsers: vi.fn(),
 }));
+const users = vi.hoisted(() => ({ list: vi.fn() }));
 vi.mock("../../../lib/api", async (importOriginal) => {
   const actual = await importOriginal<Record<string, unknown>>();
-  return { ...actual, api: { accountPool } };
+  return { ...actual, api: { accountPool, users } };
 });
 
 import { AccountPoolCard } from "../AccountPoolCard";
@@ -66,6 +69,12 @@ const POOL: AccountPool = {
 beforeEach(() => {
   for (const fn of Object.values(accountPool)) fn.mockReset();
   accountPool.list.mockResolvedValue(POOL);
+  users.list.mockResolvedValue({
+    users: [
+      { id: 7, username: "mia", disabled: false },
+      { id: 8, username: "leo", disabled: false },
+    ],
+  });
   accountPool.profiles.mockResolvedValue({
     profiles: [
       {
@@ -158,4 +167,43 @@ describe("AccountPoolCard", () => {
       expect(accountPool.remove).toHaveBeenCalledWith("codex", "cx-1", "boss-pass")
     );
   });
+
+  it("sets who runs on an account from its Edit, with the admin's own password", async () => {
+    accountPool.list.mockResolvedValue({
+      ...POOL,
+      pins: {
+        claude: [
+          { userId: 8, username: "leo", account: "team-1" },
+          { userId: 7, username: "mia", account: "team-0" },
+        ],
+        codex: [],
+      },
+    });
+    accountPool.setUsers.mockResolvedValue({
+      added: [{ userId: 7, username: "mia", switched: "switched" }],
+      removed: [{ userId: 8, username: "leo" }],
+    });
+    const user = userEvent.setup();
+    render(<AccountPoolCard isAdmin />);
+    expect(await screen.findByText("Used by: leo")).toBeInTheDocument();
+    expect(screen.queryByRole("button", { name: /switch a user/i })).toBeNull();
+    await user.click(screen.getByRole("button", { name: "Edit team-1" }));
+    const dialog = await screen.findByRole("dialog");
+    const leo = await screen.findByRole("checkbox", { name: /leo/ });
+    const mia = screen.getByRole("checkbox", { name: /mia/ });
+    expect(leo).toHaveAttribute("aria-checked", "true");
+    expect(mia).toHaveAttribute("aria-checked", "false");
+    expect(screen.getByText("now on team-0")).toBeInTheDocument();
+    await user.click(mia);
+    await user.click(leo);
+    const save = Array.from(dialog.querySelectorAll("button")).find(
+      (b) => b.textContent === "Save"
+    )!;
+    expect(save).toBeDisabled();
+    await user.type(screen.getByLabelText("Your password"), "boss-pass");
+    await user.click(save);
+    await waitFor(() =>
+      expect(accountPool.setUsers).toHaveBeenCalledWith("claude", "team-1", [7], "boss-pass")
+    );
+  });
 });

client/src/i18n/locales/en/users.json

@@ -166,7 +166,8 @@
       "EACTIVE": "This server's Claude Code keeps that login in the macOS Keychain. Switch it to another profile first.",
       "ENOTFOUND": "That saved login no longer exists.",
       "ESTALE": "That login was already refreshed elsewhere. Log in again and save it anew.",
-      "EUPSTREAM": "Anthropic could not be reached. Try again."
+      "EUPSTREAM": "Anthropic could not be reached. Try again.",
+      "ENOUSER": "That user no longer exists."
     },
     "source": "From",
     "sources": {
@@ -196,7 +197,20 @@
       "token": "The sk-ant-… that `claude setup-token` printed.",
       "codex": "An OpenAI API key (sk-…), or the whole ~/.codex/auth.json after `codex login` with a ChatGPT account."
     },
-    "refreshFailed": "refresh failed"
+    "refreshFailed": "refresh failed",
+    "pinned": "Used by: {{users}}",
+    "loadingUsers": "Loading…",
+    "pinDone": {
+      "own-login": "{{user}} signed in with their own login, which was left alone",
+      "expired": "{{account}} has expired — {{user}}'s new sessions fall back to the least-used account"
+    },
+    "edit": "Edit {{name}}",
+    "editHint": "Tick the users whose sessions run on this account instead of the least-used one — even when it is full. A user on another account moves here. A Claude login is written into their home at once: sessions already running move to it at their next login check, with no restart. A setup-token or Codex account applies to new sessions. Untick to send a user back to the least-used account.",
+    "save": "Save",
+    "users": "Users on this account",
+    "noUsers": "No users yet.",
+    "onAccount": "now on {{account}}",
+    "editDone": "{{name}} saved"
   },
   "delete": {
     "button": "Delete user",

client/src/i18n/locales/vi/users.json

@@ -166,7 +166,8 @@
       "EACTIVE": "Claude Code của server giữ login này trong macOS Keychain. Hãy chuyển nó sang profile khác trước.",
       "ENOTFOUND": "Login đã lưu đó không còn nữa.",
       "ESTALE": "Login này đã được làm mới ở nơi khác. Đăng nhập lại và lưu lại.",
-      "EUPSTREAM": "Không kết nối được Anthropic. Thử lại."
+      "EUPSTREAM": "Không kết nối được Anthropic. Thử lại.",
+      "ENOUSER": "User đó không còn tồn tại."
     },
     "source": "Nguồn",
     "sources": {
@@ -196,7 +197,20 @@
       "token": "Chuỗi sk-ant-… mà `claude setup-token` in ra.",
       "codex": "OpenAI API key (sk-…), hoặc toàn bộ ~/.codex/auth.json sau khi `codex login` bằng tài khoản ChatGPT."
     },
-    "refreshFailed": "làm mới lỗi"
+    "refreshFailed": "làm mới lỗi",
+    "pinned": "Đang dùng: {{users}}",
+    "loadingUsers": "Đang tải…",
+    "pinDone": {
+      "own-login": "{{user}} đang dùng login riêng của họ, nên không bị ghi đè",
+      "expired": "{{account}} đã hết hạn — phiên mới của {{user}} quay về tài khoản ít tải nhất"
+    },
+    "edit": "Sửa {{name}}",
+    "editHint": "Tick các user mà phiên của họ chạy trên tài khoản này thay vì tài khoản ít tải nhất — kể cả khi nó đã đầy. User đang ở tài khoản khác sẽ chuyển sang đây. Login Claude được ghi ngay vào home của họ: phiên đang chạy chuyển sang ở lần kiểm tra đăng nhập kế tiếp, không cần khởi động lại. Setup-token hoặc tài khoản Codex áp dụng cho phiên mới. Bỏ tick để trả user về tài khoản ít tải nhất.",
+    "save": "Lưu",
+    "users": "User dùng tài khoản này",
+    "noUsers": "Chưa có user nào.",
+    "onAccount": "đang ở {{account}}",
+    "editDone": "Đã lưu {{name}}"
   },
   "delete": {
     "button": "Xoá user",

client/src/lib/api.ts

@@ -676,9 +676,18 @@ export type CodexPoolAccount = {
   quotaPercent: number | null;
   full: boolean;
 };
+/** A user an admin pinned to one pool account: their new sessions skip the balancer. */
+export type AccountPin = {
+  userId: number;
+  username: string;
+  account: string;
+  pinnedAt?: string;
+};
 export type AccountPool = {
   accounts: PoolAccount[];
   codex: CodexPoolAccount[];
+  /** Per tool; absent from an older server, empty in local mode. */
+  pins?: { claude: AccountPin[]; codex: AccountPin[] };
   blockPercent: number;
 };
 export type PoolTool = "claude" | "codex";
@@ -1052,6 +1061,20 @@ export const api = {
         method: "POST",
         body: JSON.stringify({ ...body, currentPassword }),
       }),
+    /** PUT /api/accounts/:name/users — admin: exactly these users run on this account. */
+    setUsers: (tool: PoolTool, name: string, userIds: number[], currentPassword: string) =>
+      request<{
+        /** Users moved onto it; `switched`: what happened now (a Claude login goes into their home). */
+        added: {
+          userId: number;
+          username: string;
+          switched: "switched" | "kept" | "own-login" | "expired" | "next-session";
+        }[];
+        removed: { userId: number; username: string }[];
+      }>(`/accounts/${encodeURIComponent(name)}/users`, {
+        method: "PUT",
+        body: JSON.stringify({ tool, userIds, currentPassword }),
+      }),
     /** DELETE /api/accounts/:name — admin, with their OWN password again. */
     remove: (tool: PoolTool, name: string, currentPassword: string) =>
       request<{ ok: true }>(`/accounts/${encodeURIComponent(name)}`, {

client/src/pages/__tests__/__snapshots__/screens.snapshot.test.tsx.snap

@@ -7022,7 +7022,7 @@ exports[`screen snapshots > Settings — about 1`] = `
           class="mt-2"
         >
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7033,7 +7033,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Start AgentHub automatically
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 Run the dashboard as a systemd --user service, so it starts at boot without Claude Code being opened. Turning it off keeps the running server up.
               </p>
@@ -7044,19 +7044,19 @@ exports[`screen snapshots > Settings — about 1`] = `
               <button
                 aria-checked="false"
                 aria-label="Start AgentHub automatically"
-                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 bg-border-light ring-1 ring-inset ring-fg-muted/80"
+                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 bg-border-light ring-1 ring-inset ring-fg-muted/80 enabled:hover:ring-fg-secondary"
                 role="switch"
                 type="button"
               >
                 <span
                   aria-hidden="true"
-                  class="inline-block h-4 w-4 rounded-full bg-white shadow transition-transform translate-x-0.5"
+                  class="inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out translate-x-0.5"
                 />
               </button>
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7067,7 +7067,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Show AgentHub icon in the status area
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 An AgentHub icon beside the clock (top bar, menu bar or notification area) to open the dashboard, quit it, and start it again after a quit.
               </p>
@@ -7078,19 +7078,19 @@ exports[`screen snapshots > Settings — about 1`] = `
               <button
                 aria-checked="true"
                 aria-label="Show AgentHub icon in the status area"
-                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 bg-accent-solid"
+                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 bg-accent-solid enabled:hover:bg-accent-solid-hover"
                 role="switch"
                 type="button"
               >
                 <span
                   aria-hidden="true"
-                  class="inline-block h-4 w-4 rounded-full bg-white shadow transition-transform translate-x-[18px]"
+                  class="inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out translate-x-[18px]"
                 />
               </button>
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7101,25 +7101,51 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Quit AgentHub
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
-                Stop the dashboard so nothing runs in the background. Opening Claude Code no longer starts it; run \`agenthub start\` to bring it back.
+                Stop the dashboard so nothing runs in the background. Opening Claude Code no longer starts it; run 
+                <code
+                  class="whitespace-nowrap rounded border border-border bg-surface-2 px-1 py-px font-mono text-[11px] text-fg-secondary"
+                >
+                  agenthub start
+                </code>
+                 to bring it back.
               </p>
             </div>
             <div
               class="shrink-0"
             >
               <button
-                class="btn-ghost text-xs text-status-danger disabled:opacity-40"
+                aria-busy="false"
+                class="btn-secondary min-w-[6.5rem] justify-center text-xs"
                 data-testid="quit-agenthub"
                 type="button"
               >
+                <svg
+                  class="lucide lucide-power h-3.5 w-3.5 shrink-0"
+                  fill="none"
+                  height="24"
+                  stroke="currentColor"
+                  stroke-linecap="round"
+                  stroke-linejoin="round"
+                  stroke-width="2"
+                  viewBox="0 0 24 24"
+                  width="24"
+                  xmlns="http://www.w3.org/2000/svg"
+                >
+                  <path
+                    d="M12 2v10"
+                  />
+                  <path
+                    d="M18.4 6.6a9 9 0 1 1-12.77.04"
+                  />
+                </svg>
                 Quit
               </button>
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7130,7 +7156,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Uninstall AgentHub
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 Remove AgentHub from this computer: the dashboard, its database and settings, its hooks in Claude Code, Codex and Antigravity, and the plugin. Your conversations, workspace folders and repositories are kept.
               </p>
@@ -7139,10 +7165,45 @@ exports[`screen snapshots > Settings — about 1`] = `
               class="shrink-0"
             >
               <button
-                class="btn-ghost text-xs text-status-danger disabled:opacity-40"
+                aria-busy="false"
+                class="btn-danger min-w-[6.5rem] justify-center text-xs"
                 data-testid="uninstall-agenthub"
                 type="button"
               >
+                <svg
+                  class="lucide lucide-trash2 h-3.5 w-3.5 shrink-0"
+                  fill="none"
+                  height="24"
+                  stroke="currentColor"
+                  stroke-linecap="round"
+                  stroke-linejoin="round"
+                  stroke-width="2"
+                  viewBox="0 0 24 24"
+                  width="24"
+                  xmlns="http://www.w3.org/2000/svg"
+                >
+                  <path
+                    d="M3 6h18"
+                  />
+                  <path
+                    d="M19 6v14c0 1-1 2-2 2H7c-1 0-2-1-2-2V6"
+                  />
+                  <path
+                    d="M8 6V4c0-1 1-2 2-2h4c1 0 2 1 2 2v2"
+                  />
+                  <line
+                    x1="10"
+                    x2="10"
+                    y1="11"
+                    y2="17"
+                  />
+                  <line
+                    x1="14"
+                    x2="14"
+                    y1="11"
+                    y2="17"
+                  />
+                </svg>
                 Uninstall
               </button>
             </div>
@@ -7162,7 +7223,7 @@ exports[`screen snapshots > Settings — about 1`] = `
           class="mt-2"
         >
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7173,12 +7234,12 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Release
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 <span
                   class="text-status-warning/90"
                 >
-                  UI build v2.8.8 (rebuild client to match)
+                  UI build v2.8.11 (rebuild client to match)
                 </span>
               </p>
             </div>
@@ -7193,7 +7254,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7215,7 +7276,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7240,7 +7301,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7262,7 +7323,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7284,7 +7345,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7295,7 +7356,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Live connections
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 Browser tabs and tools receiving live updates
               </p>
@@ -7325,7 +7386,7 @@ exports[`screen snapshots > Settings — about 1`] = `
           class="mt-2"
         >
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7355,7 +7416,7 @@ exports[`screen snapshots > Settings — about 1`] = `
           class="mt-2"
         >
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -7366,7 +7427,7 @@ exports[`screen snapshots > Settings — about 1`] = `
                 Database file
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 <span
                   class="font-mono break-all"
@@ -7386,7 +7447,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -7408,7 +7469,7 @@ exports[`screen snapshots > Settings — about 1`] = `
             </div>
           </div>
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
           >
             <div
               class="min-w-0"
@@ -8960,7 +9021,7 @@ exit 0
           class="mt-2"
         >
           <div
-            class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-3 items-center"
+            class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-3 items-center"
           >
             <div
               class="min-w-0"
@@ -8971,7 +9032,7 @@ exit 0
                 Redact secrets before storing
               </p>
               <p
-                class="mt-0.5 text-xs text-fg-muted"
+                class="mt-0.5 text-xs leading-relaxed text-fg-muted"
               >
                 API keys and tokens of known shapes, bearer headers, private keys and password=/TOKEN= values in event payloads and summaries become [redacted]. The transcripts on disk are the CLIs' own files and are not changed.
               </p>
@@ -8982,13 +9043,13 @@ exit 0
               <button
                 aria-checked="false"
                 aria-label="Redact secrets before storing"
-                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 bg-border-light ring-1 ring-inset ring-fg-muted/80"
+                class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 bg-border-light ring-1 ring-inset ring-fg-muted/80 enabled:hover:ring-fg-secondary"
                 role="switch"
                 type="button"
               >
                 <span
                   aria-hidden="true"
-                  class="inline-block h-4 w-4 rounded-full bg-white shadow transition-transform translate-x-0.5"
+                  class="inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out translate-x-0.5"
                 />
               </button>
             </div>
@@ -9739,7 +9800,7 @@ exports[`screen snapshots > Settings — notifications 1`] = `
                   class="min-w-0 flex-1"
                 >
                   <div
-                    class="flex justify-between gap-4 border-b border-border/60 last:border-b-0 py-2 items-center"
+                    class="flex justify-between gap-6 border-b border-border/60 last:border-b-0 py-2 items-center"
                   >
                     <div
                       class="min-w-0"
@@ -9756,13 +9817,13 @@ exports[`screen snapshots > Settings — notifications 1`] = `
                       <button
                         aria-checked="false"
                         aria-label="Enable Browser Notifications"
-                        class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 bg-border-light ring-1 ring-inset ring-fg-muted/80"
+                        class="relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 bg-border-light ring-1 ring-inset ring-fg-muted/80 enabled:hover:ring-fg-secondary"
                         role="switch"
                         type="button"
                       >
                         <span
                           aria-hidden="true"
-                          class="inline-block h-4 w-4 rounded-full bg-white shadow transition-transform translate-x-0.5"
+                          class="inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out translate-x-0.5"
                         />
                       </button>
                     </div>

docs/API.md

@@ -89,9 +89,9 @@ In server mode a **developer** sees only rows of the workspaces they own (`lanes
 
 An admin changes accounts with `POST /api/users` (`{username, password, role}` → `201 {user}`), `GET /api/users/:id` (`{user, workspaces: [{id, title, cwd}]}`, the account with `logins` and `lastLoginAt`, for the Edit form; admin or analyst), `GET /api/users/:id/avatar` (that account's picture for the sidebar's owner groups — admin or analyst, `nosniff` + `sandbox` CSP, `404 ENOAVATAR`; a workspace in `GET /api/lanes` carries `owner_avatar_at` to version its URL), `PATCH /api/users/:id` (any of `{displayName?, email?, role?, disabled?, password?, addWorkspaces?: [laneId], removeWorkspaces?: [laneId], signOut?: true}` — every field validated before any is written; `removeWorkspaces` leaves the workspace with no owner and answers `409 ENOTOWNED` for one the user does not own; an admin's own `password`/`signOut` keeps the login it came from), `POST /api/users/:id/password` (`{password}`; that user's logins end) `POST /api/users/:id/workspaces` (`{laneId}`; the workspace's owner becomes that user) and `DELETE /api/users/:id` (delete for good: the user's logins, panes, workspaces' records, prefs and — under S3 — their Linux account and whole home, removed FIRST so a refusal (`502 EPROVISION`) leaves every row; `409 ESELF` for yourself, `409 ELASTADMIN` for the last admin; session history and the audit log stay). Every one carries `currentPassword`, the admin's own password: `403 EREAUTH` when it is wrong or missing, `429 ETOOMANY` after 10 wrong tries in 15 minutes. `409 ESELF` for an admin's own role or disable, `409 EEXISTS` for a taken name, `400 EBADUSER`/`EBADPASSWORD`/`EBADROLE`/`EBADEMAIL`/`EBADFIELD`, `404 ENOUSER`/`ENOLANE`; a developer or analyst gets `403 EADMIN`, and local mode `403 ELOCALMODE`. No answer carries a password hash; each change is written to the audit log.
 
-`GET /api/accounts[?force=1]` lists the Claude account pool ([SERVER-MODE.md](SERVER-MODE.md#claude-account-pool)): `{accounts: [{name, addedAt, expiresAt, expired, livePanes, spend5h, spend7d, tokens5h, tokens7d, quota: {fiveHour, sevenDay, checkedAt, error} | null, quotaPercent, full}], codex: [{name, kind: "apikey"|"chatgpt", addedAt, livePanes, spend5h, spend7d, tokens5h, tokens7d, quota: {windows: [{label, usedPercent, resetsAt}], asOf} | null, quotaPercent, full}], blockPercent}` — `codex` is the [Codex account pool](SERVER-MODE.md#codex-account-pool). `spend*`/`tokens*` = the sessions the account's runs held, over the hours they held them (a Codex session counts whole once its run started in the window). It never includes a key or a token. `force=1` re-reads every quota first. Run rows (`/api/run/history`) carry `account`, the pool account their pane ran on (`null` = the machine's own login).
+`GET /api/accounts[?force=1]` lists the Claude account pool ([SERVER-MODE.md](SERVER-MODE.md#claude-account-pool)): `{accounts: [{name, addedAt, expiresAt, expired, livePanes, spend5h, spend7d, tokens5h, tokens7d, quota: {fiveHour, sevenDay, checkedAt, error} | null, quotaPercent, full}], codex: [{name, kind: "apikey"|"chatgpt", addedAt, livePanes, spend5h, spend7d, tokens5h, tokens7d, quota: {windows: [{label, usedPercent, resetsAt}], asOf} | null, quotaPercent, full}], pins: {claude: [{userId, username, account, pinnedAt}], codex: […]}, blockPercent}` — `pins` are the users an admin pinned to one account (empty in local mode); `codex` is the [Codex account pool](SERVER-MODE.md#codex-account-pool). `spend*`/`tokens*` = the sessions the account's runs held, over the hours they held them (a Codex session counts whole once its run started in the window). It never includes a key or a token. `force=1` re-reads every quota first. Run rows (`/api/run/history`) carry `account`, the pool account their pane ran on (`null` = the machine's own login).
 
-An admin (server mode) adds an account with `POST /api/accounts` `{tool: "claude"|"codex", name, currentPassword, …}` → `201 {account}`. For Claude the body carries one of: `profile` (a saved switch-user profile, MOVED in: the profile is deleted; the one the host's CLI is logged into moves in with its live login and the host's home becomes one more placement the server refreshes — `409 EACTIVE` only for a macOS Keychain login; `name` defaults to it), `credentials` (the text of a `.credentials.json`; Anthropic is asked whose account it is, `502 EUPSTREAM` when it cannot be reached), or `token` (a `claude setup-token` token). For Codex, `token` is an OpenAI API key or the text of an `auth.json`. `GET /api/accounts/profiles` lists the saved profiles `{profiles: [{name, label, email, subscriptionType, active}]}` (no token). Claude rows in `GET /api/accounts` carry `kind` (`token`|`login`), `email` and `refreshError`; a login's `expiresAt` is null and removes one with `DELETE /api/accounts/:name` `{tool, currentPassword}` → `{ok: true}`. No answer carries the token. `403 EREAUTH` wrong password (`429 ETOOMANY` after 10), `403 EADMIN` for a non-admin, `403 ELOCALMODE` in local mode, `400 EBADTOOL`/`EBADNAME`/`EBADTOKEN`, `409 EEXISTS`, `404 ENOACCOUNT`; each change is audited by account name.
+An admin (server mode) adds an account with `POST /api/accounts` `{tool: "claude"|"codex", name, currentPassword, …}` → `201 {account}`. For Claude the body carries one of: `profile` (a saved switch-user profile, MOVED in: the profile is deleted; the one the host's CLI is logged into moves in with its live login and the host's home becomes one more placement the server refreshes — `409 EACTIVE` only for a macOS Keychain login; `name` defaults to it), `credentials` (the text of a `.credentials.json`; Anthropic is asked whose account it is, `502 EUPSTREAM` when it cannot be reached), or `token` (a `claude setup-token` token). For Codex, `token` is an OpenAI API key or the text of an `auth.json`. `GET /api/accounts/profiles` lists the saved profiles `{profiles: [{name, label, email, subscriptionType, active}]}` (no token). Claude rows in `GET /api/accounts` carry `kind` (`token`|`login`), `email` and `refreshError`; a login's `expiresAt` is null and removes one with `DELETE /api/accounts/:name` `{tool, currentPassword}` → `{ok: true}`. No answer carries the token. `403 EREAUTH` wrong password (`429 ETOOMANY` after 10), `403 EADMIN` for a non-admin, `403 ELOCALMODE` in local mode, `400 EBADTOOL`/`EBADNAME`/`EBADTOKEN`, `409 EEXISTS`, `404 ENOACCOUNT`; each change is audited by account name. `PUT /api/accounts/pins` `{tool, userId, account, currentPassword}` → `{pin: {userId, username, account}}` switches that user's sessions of `tool` to one pool account (`account: null` = automatic again; `404 ENOUSER`/`ENOACCOUNT`); `switched` says what happened now — `switched` (a Claude login was written into their home: running panes take it at their next credentials read, no restart), `kept`, `own-login` (their own login, left alone), `expired`, `next-session` (a token, Codex, or no member home), with the same password step-up and audit (the user as `owner_id`). `PUT /api/accounts/:name/users` `{tool, userIds, currentPassword}` → `{added: [{userId, username, switched}], removed: [{userId, username}]}` is the Users page's Edit of one account: exactly those users run on it afterwards (a user on another account moves here, one left out goes back to the balancer; one transaction, each change audited; `400 EBADUSER`, `404 ENOUSER`/`ENOACCOUNT`). Removing an account drops its pins; deleting a user drops theirs.
 
 **The account's own preferences and first-run setup** (`server/routes/me.js`; local mode is the one account `local`, server mode one row per account in `user_prefs`):
 
@@ -1598,7 +1598,7 @@ What a workspace's home page edits (`server/lib/lane-sources.js`, `server/routes
 - **Memory** — read-only: the folder's `CLAUDE.md`, `.claude/CLAUDE.md`, `CLAUDE.local.md`, `AGENTS.md`, and for a Claude workspace `<CLAUDE_HOME>/projects/<encoded cwd>/memory/*.md` — `{files: [{label, path, size, mtime, truncated, content}]}`, each at most 256 KB of content.
 - Every write is same-origin only (`403 EBADORIGIN`); an unknown workspace is `404 ENOLANE`, an unknown source `404 ENOSOURCE`.
 
-At spawn (`spawnRun`, both `POST /api/lanes/:id/start` and `POST /api/run`) the pane gets, from these rows: Claude — `--add-dir <folders…> [<context dir>]` first, then `--append-system-prompt-file=<data dir>/workspace-prompts/<lane id>.md`, a file rewritten at every spawn holding the workspace owner's own instructions (`PUT /api/me/instructions`) + the workspace's instructions + the context file list + the extra folders; Codex — one `--add-dir <dir>` per folder (and the context dir) and `-c developer_instructions=<same text as a TOML string>` (above 6 KB as the escaped TOML string, one line pointing at that file instead; nothing when that file could not be written). Any other tool gets none of it (`supported: false`). A folder or file that vanished is skipped.
+At spawn (`spawnRun`, both `POST /api/lanes/:id/start` and `POST /api/run`) the pane gets, from these rows: Claude — `--add-dir <folders…> [<context dir>]` first, then that workspace's instructions folder `<data dir>/workspace-prompts/<lane id>/` (a member's: `prompt-<lane id>/` in their handoff dir) as one more `--add-dir`, with `CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD=1` in the pane's env so Claude reads the `CLAUDE.md` there as memory — never `--append-system-prompt-file`: Claude cannot carry a custom system prompt over a restart and refused `/tui` in such a pane. That `CLAUDE.md` is rewritten at every spawn and holds the workspace owner's own instructions (`PUT /api/me/instructions`) + the workspace's instructions + the context file list + the extra folders; Codex — one `--add-dir <dir>` per folder (and the context dir) and `-c developer_instructions=<same text as a TOML string>` (above 6 KB as the escaped TOML string, one line pointing at that file instead; nothing when that file could not be written). Any other tool gets none of it (`supported: false`). A folder or file that vanished is skipped.
 
 #### Projects (workspaces grouped by repository)
 

docs/CLI.md

@@ -108,7 +108,7 @@ The CLI talks to the local dashboard server — **API-backed commands require it
 | `agenthub server install-system [--dry-run\|--uninstall]` | **One Linux user per account** (S3). Run as the account that runs the dashboard, never as root: it runs `scripts/server/install-system.sh` through one `sudo`. That script creates the groups, `/srv/agenthub/users`, `/opt/agenthub`, the sudoers file, the member hooks and `hidepid`, and installs the system unit `agenthub.service`. The command then points the unit at this install, writes `AGENTHUB_USERS_ROOT`, and moves the dashboard from the `systemd --user` unit to the system one (panes stay). `--dry-run` prints the sudo command; `--uninstall` goes back to the user unit. See [SERVER-MODE.md](SERVER-MODE.md#one-linux-user-per-account) |
 | `agenthub server tools` | One Linux user per account: publish this install's scripts and every installed AI tool under `/opt/agenthub` (`tools/bin/<command>`), where every account's pane runs them. The server also does this at start and after each install or update. Prints each tool's shared copy, or why it could not be shared |
 | `agenthub server off` / `agenthub server status` | Back to local mode (accounts kept) / show the mode and account count |
-| `agenthub accounts list\|add <name>\|remove <name>` | The **Claude account pool**: new Claude sessions spread over these accounts (each a `claude setup-token` token, typed hidden or read from stdin). `list` shows live panes, $ and tokens in the last 5 h / 7 d, and quota. With `--tool codex` the same for the **Codex account pool**: `add <name> --tool codex --api-key` (key typed hidden or on stdin) or `--from <dir>` (a `codex login` home or its `auth.json`). See [SERVER-MODE.md](SERVER-MODE.md#claude-account-pool) |
+| `agenthub accounts list\|add <name>\|remove <name>` | The **Claude account pool**: new Claude sessions spread over these accounts (each a `claude setup-token` token, typed hidden or read from stdin). `list` shows live panes, $ and tokens in the last 5 h / 7 d, and quota. With `--tool codex` the same for the **Codex account pool**: `add <name> --tool codex --api-key` (key typed hidden or on stdin) or `--from <dir>` (a `codex login` home or its `auth.json`). `pin <account> <user>` / `unpin <user>` (add `--tool codex` for Codex) switches one user's sessions to that account (a Claude login goes into their home at once, running sessions follow without a restart) (server mode; `list` shows a `pinned` column). See [SERVER-MODE.md](SERVER-MODE.md#claude-account-pool) |
 | `agenthub users list\|add <name> [--role admin\|analyst\|member]\|passwd <name>\|role <name> <role>\|disable <name>\|enable <name>\|provision <name>\|--all\|assign <workspace id> <name>\|audit [--limit N]` | Server mode's accounts, written straight to the database. Once `install-system` ran, `add` first creates the Linux user `ah-<name>`; a name must then be lower case: a letter, then up to 28 letters, digits, `_` or `-`. `disable`/`enable` lock or unlock that Linux user too, and `provision` gives users made earlier their Linux user (idempotent); `assign` gives a workspace made before server mode an owner; `audit` lists admin/analyst reads of members' sessions. Inside a dashboard pane in server mode, every command acts as the workspace's owner through the pane's `AGENTHUB_PANE_TOKEN`. A password is typed hidden twice, or read from the first line of stdin |
 
 ### Interactive REPL

docs/DATABASE.md

@@ -621,6 +621,7 @@ Server mode's accounts ([SERVER-MODE.md](SERVER-MODE.md), `server/lib/auth.js`).
 | --- | --- |
 | `users` | `id`, `username` (unique, case-insensitive), `role` (`admin`\|`analyst`\|`member`), `password_hash` (`scrypt$<salt>$<hash>`), `disabled`, `created_at` |
 | `auth_sessions` | `token_hash` (SHA-256 of the cookie token, PK), `user_id` → `users.id` (cascade), `created_at`, `expires_at` (30 days) |
+| `account_pins` | `user_id` → `users.id` (cascade), `tool` (`claude`\|`codex`), `account` (a pool account's name), `pinned_at`; PK (`user_id`, `tool`) — an admin's pin of a user to one pool account (`server/lib/account-pins.js`) |
 
 `dashboard_runs.account` names the Claude pool account a run's pane was started on (`server/lib/claude-pool.js`; `NULL` = the machine's own login). The balancer sums each account's spend from the `token_usage_hourly` rows of those runs' sessions. The pool's tokens live in files under `<CLAUDE_HOME>/agenthub-accounts/`, never in the database.
 

docs/SERVER-MODE.md

@@ -355,6 +355,7 @@ claude setup-token
 agenthub accounts add team-1
 agenthub accounts list        # live panes, $ and tokens in the last 5 h / 7 d, quota, state
 agenthub accounts remove team-1
+agenthub accounts pin team-1 mia   # switch mia to team-1 (unpin mia = automatic again)
 ```
 
 In server mode an admin can do the same on the **Users** page, in the
@@ -423,6 +424,28 @@ How a new session picks its account (`server/lib/claude-pool.js`):
   pane still needs that member's own `/login`.
 - A token more than a year old is skipped.
 - A resumed session picks an account again, like a new one.
+- **Switching a user to one account.** An admin can take one user off the
+  ranking: the pencil (**Edit**) on that account's row in the Account pool
+  card — tick the users who run on it, untick to send one back to automatic (or
+  `agenthub accounts pin <account> <user> [--tool codex]`, `unpin <user>`; their
+  own password again, each change audited). A user ticked on one account
+  moves off any other. Every session in a
+  workspace that user OWNS then runs on that account, even when it is full;
+  other users are not affected, and the account is not reserved for them.
+  - **A Claude login switches at once, without a restart.** The server first
+    copies every home's newer pair back into the pool (so the login leaving
+    the home keeps its only live refresh token), then writes the new login
+    into the user's `~/.claude/.credentials.json` as them. New sessions start
+    on it; sessions already running keep their process and move to it the
+    next time Claude Code re-reads its credentials (it does so before it
+    refreshes its access token, so at the latest when that token expires).
+    A login the user made themselves (`/login`) is never written over — the
+    card says so. Their sessions are booked to the account they started on.
+  - A setup-token, a Codex account, or a host pane gets the account at its
+    next spawn; running ones keep theirs.
+  - An expired account falls back to the ranking. Removing the account drops
+    the switch; deleting the user drops theirs. Server mode only
+    (`server/lib/account-pins.js`).
 - Quota is read with each account's own token, in the background, at most every
   5 minutes. If the usage endpoint refuses a setup-token, the state column shows
   `no quota (…)` and ranking uses spend alone.
@@ -447,6 +470,7 @@ CODEX_HOME=$(mktemp -d) codex login
 agenthub accounts add team-chatgpt --tool codex --from /tmp/tmp.XXXX
 agenthub accounts list --tool codex
 agenthub accounts remove team-key --tool codex
+agenthub accounts pin team-key mia --tool codex   # pins work as for Claude
 ```
 
 - **API key**: any number of panes at once. The pane gets the key through

openapi.yaml

@@ -3,7 +3,7 @@
 openapi: 3.0.3
 info:
   title: Agent Dashboard for Claude Code API
-  version: 2.8.8
+  version: 2.8.11
   description: HTTP API for real-time Claude Code session monitoring, agent lifecycle tracking, analytics, pricing, hooks ingestion, and workflow intelligence.
   contact:
     name: Nguyễn Ngọc Trí Vĩ
@@ -4785,6 +4785,22 @@ components:
           description: Events attributed to this run's inner agents, ordered by created_at then id. Capped at 5000 rows.
           items:
             $ref: '#/components/schemas/DashboardEvent'
+    AccountPin:
+      type: object
+      required:
+        - userId
+        - username
+        - account
+      properties:
+        userId:
+          type: integer
+        username:
+          type: string
+        account:
+          type: string
+          description: The pool account's name
+        pinnedAt:
+          type: string
     UserPrefs:
       type: object
       required:
@@ -15141,6 +15157,18 @@ paths:
                           nullable: true
                         full:
                           type: boolean
+                  pins:
+                    type: object
+                    description: Per tool, the users an admin pinned to one account (empty in local mode)
+                    properties:
+                      claude:
+                        type: array
+                        items:
+                          $ref: '#/components/schemas/AccountPin'
+                      codex:
+                        type: array
+                        items:
+                          $ref: '#/components/schemas/AccountPin'
                   codex:
                     type: array
                     description: The Codex account pool (server/lib/codex-pool.js), same fields plus `kind`; no expiry
@@ -15241,6 +15269,62 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ErrorResponse'
+  /api/accounts/pins:
+    put:
+      tags:
+        - Auth
+      operationId: pinPoolAccount
+      summary: 'Admin: switch one user''s sessions of a tool to one pool account (`account: null` = automatic), with their own password again. A Claude login is written into their home at once; running panes take it without a restart'
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required:
+                - tool
+                - userId
+                - currentPassword
+              properties:
+                tool:
+                  type: string
+                  enum:
+                    - claude
+                    - codex
+                userId:
+                  type: integer
+                account:
+                  type: string
+                  nullable: true
+                currentPassword:
+                  type: string
+      responses:
+        '200':
+          description: '`{pin: {userId, username, account}, switched}` — `account` null when unpinned; `switched`: switched | kept | own-login | expired | next-session | null'
+        '400':
+          description: EBADTOOL
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '403':
+          description: EREAUTH — wrong password; EADMIN — not an admin; ELOCALMODE
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '404':
+          description: ENOUSER, ENOACCOUNT
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '429':
+          description: ETOOMANY — too many wrong passwords
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
   /api/accounts/profiles:
     get:
       tags:
@@ -15250,6 +15334,67 @@ paths:
       responses:
         '200':
           description: '`{profiles: [{name, label, email, subscriptionType, active}]}`'
+  /api/accounts/{name}/users:
+    put:
+      tags:
+        - Auth
+      operationId: setPoolAccountUsers
+      summary: 'Admin: exactly these users run on this pool account (a user on another account moves here; one left out goes back to the balancer), with their own password again. A Claude login is written into each added user''s home at once'
+      parameters:
+        - name: name
+          in: path
+          required: true
+          schema:
+            type: string
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: object
+              required:
+                - tool
+                - userIds
+                - currentPassword
+              properties:
+                tool:
+                  type: string
+                  enum:
+                    - claude
+                    - codex
+                userIds:
+                  type: array
+                  items:
+                    type: integer
+                currentPassword:
+                  type: string
+      responses:
+        '200':
+          description: '`{added: [{userId, username, switched}], removed: [{userId, username}]}` — `switched`: switched | kept | own-login | expired | next-session'
+        '400':
+          description: EBADTOOL, EBADUSER
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '403':
+          description: EREAUTH — wrong password; EADMIN — not an admin; ELOCALMODE
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '404':
+          description: ENOUSER, ENOACCOUNT
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
+        '429':
+          description: ETOOMANY — too many wrong passwords
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorResponse'
   /api/accounts/{name}:
     delete:
       tags:

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "agenthub",
-  "version": "2.8.8",
+  "version": "2.8.11",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "agenthub",
-      "version": "2.8.8",
+      "version": "2.8.11",
       "hasInstallScript": true,
       "license": "UNLICENSED",
       "dependencies": {
@@ -14,6 +14,7 @@
         "adm-zip": "^0.6.1",
         "cors": "^2.8.5",
         "express": "^4.21.2",
+        "js-yaml": "^4.1.0",
         "multer": "^2.0.0",
         "swagger-ui-express": "^5.0.1",
         "systray2": "^2.1.4",
@@ -27,7 +28,6 @@
       },
       "devDependencies": {
         "concurrently": "^9.1.2",
-        "js-yaml": "^4.1.0",
         "prettier": "^3.8.1"
       },
       "engines": {
@@ -215,7 +215,6 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
       "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-      "dev": true,
       "license": "Python-2.0"
     },
     "node_modules/array-flatten": {
@@ -1099,7 +1098,6 @@
       "version": "4.3.2",
       "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.3.2.tgz",
       "integrity": "sha512-SFNOvSJ+Dgf/9An904Yx+CgSlIPCkIpao4qo51lpee25TIRejdH3rhR4EZMGoNx3/TP3O+wzWuiTFl4sqbltzA==",
-      "dev": true,
       "funding": [
         {
           "type": "github",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agenthub",
-  "version": "2.8.8",
+  "version": "2.8.11",
   "bin": {
     "agenthub": "bin/agenthub.js"
   },
@@ -75,6 +75,7 @@
     "adm-zip": "^0.6.1",
     "cors": "^2.8.5",
     "express": "^4.21.2",
+    "js-yaml": "^4.1.0",
     "multer": "^2.0.0",
     "swagger-ui-express": "^5.0.1",
     "systray2": "^2.1.4",
@@ -88,7 +89,6 @@
   },
   "devDependencies": {
     "concurrently": "^9.1.2",
-    "js-yaml": "^4.1.0",
     "prettier": "^3.8.1"
   },
   "engines": {

server/__tests__/claude-pool-login.test.js

@@ -9,7 +9,9 @@
  * same account; removing the account takes it out of those homes; and the
  * Users-page route moves a saved switch-user profile in — the one this
  * machine's own Claude Code is logged into with its LIVE login, the host's
- * home then being one more placement the server refreshes.
+ * home then being one more placement the server refreshes. A pin of the
+ * owner to another login waits while a live pane holds the first, until the
+ * admin's switch writes it into the home (never over the member's own login).
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -188,6 +190,51 @@ describe("a pool login", () => {
     assert.equal(pool.__read("team"), null);
   });
 
+  it("follows the owner's pin, and an admin's switch moves the home's login now", async () => {
+    const { db } = require("../db");
+    const pins = require("../lib/account-pins");
+    const miaId = db.prepare("SELECT id FROM users WHERE username = 'mia'").get().id;
+    pool.addLoginAccount("alpha", { oauth: oauth("a"), account: ACCOUNT });
+    pool.addLoginAccount("beta", {
+      oauth: oauth("b"),
+      account: { accountUuid: "uuid-beta", emailAddress: "beta@example.com" },
+    });
+    assert.equal(pool.forSpawn(acct, miaId).name, "alpha", "unpinned: the balancer's pick");
+    pins.setPin(miaId, "claude", "beta");
+    assert.equal(pool.forSpawn(acct, miaId).name, "beta");
+    assert.equal(pool.forSpawn(acct, null).name, "alpha", "another owner is not pinned");
+    // A pane of mia's runs on alpha: beta waits until it ends.
+    pool.forSpawn(acct).place();
+    fs.mkdirSync(path.join(HOME, "proj"), { recursive: true });
+    const lane = db
+      .prepare("INSERT INTO lanes (cwd, owner_id) VALUES (?, ?)")
+      .run(path.join(HOME, "proj"), miaId).lastInsertRowid;
+    db.prepare(
+      `INSERT INTO dashboard_runs (id, mode, cwd, status, started_at, account, lane_id, tool)
+       VALUES ('pin-run', 'interactive', ?, 'running', ?, 'alpha', ?, 'claude')`
+    ).run(path.join(HOME, "proj"), new Date().toISOString(), lane);
+    assert.equal(pool.forSpawn(acct, miaId).name, "alpha", "a bare pin waits for the pane");
+    // The admin's switch writes beta into the home now; the pane is not touched.
+    assert.equal(await pins.applyPin(miaId, "claude"), "switched");
+    assert.equal(diskCreds().refreshToken, oauth("b").refreshToken);
+    assert.equal(pool.__read("alpha").placed.mia, undefined, "alpha no longer holds mia's home");
+    assert.equal(pool.forSpawn(acct, miaId).name, "beta");
+    assert.equal(await pins.applyPin(miaId, "claude"), "kept");
+    // Unpinned with the pane still live: the home's login stays, no flip back.
+    pins.setPin(miaId, "claude", null);
+    assert.equal(pool.forSpawn(acct, miaId).name, "beta");
+    // A login the member made themselves is never written over.
+    fs.writeFileSync(CREDS, JSON.stringify({ claudeAiOauth: oauth("own") }));
+    pins.setPin(miaId, "claude", "alpha");
+    assert.equal(await pins.applyPin(miaId, "claude"), "own-login");
+    assert.equal(diskCreds().refreshToken, oauth("own").refreshToken);
+    pins.setPin(miaId, "claude", "beta");
+    pool.removeAccount("beta");
+    assert.equal(pins.pinFor(miaId, "claude"), null, "a removed account drops its pins");
+    db.prepare("DELETE FROM dashboard_runs WHERE id = 'pin-run'").run();
+    db.prepare("DELETE FROM lanes WHERE id = ?").run(lane);
+  });
+
   it("refuses a second copy of one Claude account", () => {
     pool.addLoginAccount("team", { oauth: oauth("a"), account: ACCOUNT });
     assert.throws(() => pool.addLoginAccount("team-2", { oauth: oauth("b"), account: ACCOUNT }), {

server/__tests__/lane-sources.test.js

@@ -181,12 +181,16 @@ describe("lane-sources instructions and launch", () => {
     assert.equal(lanesLib.getLane(lane.id).instructions, "- always answer in Vietnamese");
   });
 
-  it("starts a claude pane with --add-dir first and the instructions from a file", () => {
+  it("starts a claude pane with --add-dir first and the instructions as a CLAUDE.md there", () => {
     let argv = null;
+    let newSession = null;
     tmux.__setExecImpl((args) => {
       if (args[0] === "has-session") throw Object.assign(new Error("gone"), { status: 1 });
       // The CLI rides behind `sh -c <cd; wait for a client> sh <cwd>` (pty-run.js).
-      if (args[0] === "new-session") argv = args.slice(args.indexOf("--") + 6);
+      if (args[0] === "new-session") {
+        newSession = args;
+        argv = args.slice(args.indexOf("--") + 6);
+      }
       return "";
     });
     pty.spawnRun({ laneId: lane.id, cwd: ws, initialPrompt: "-c fix it" });
@@ -194,11 +198,15 @@ describe("lane-sources instructions and launch", () => {
     assert.equal(argv[0], "claude");
     assert.equal(argv[1], "--add-dir");
     assert.deepEqual(argv.slice(2, 4), [extra, src.contextDir(lane.id)]);
-    assert.equal(argv[4], "--permission-mode");
+    // The instructions' own folder, read as memory: a custom system prompt
-    const flag = argv.find((a) => a.startsWith("--append-system-prompt-file="));
+    // (`--append-system-prompt-file`) made Claude refuse `/tui` in the pane.
-    const file = flag.slice("--append-system-prompt-file=".length);
+    const dir = argv[4];
-    assert.ok(file.startsWith(process.env.DASHBOARD_DATA_DIR));
+    assert.ok(dir.startsWith(process.env.DASHBOARD_DATA_DIR));
-    const text = fs.readFileSync(file, "utf8");
+    assert.equal(argv[5], "--permission-mode");
+    assert.ok(!argv.some((a) => a.startsWith("--append-system-prompt")));
+    assert.ok(newSession.includes("CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD=1"));
+    assert.deepEqual(fs.readdirSync(dir), ["CLAUDE.md"]);
+    const text = fs.readFileSync(path.join(dir, "CLAUDE.md"), "utf8");
     assert.match(text, /^- always answer in Vietnamese/);
     assert.match(text, /pass wd\.md/);
     // A prompt that looks like flags stays one positional, never `claude -c`.

server/__tests__/runtime-deps.test.js

@@ -0,0 +1,68 @@
+/**
+ * @file runtime-deps.test.js
+ * @description Every package the server code requires is a runtime dependency.
+ * A plugin install runs `npm install --omit=dev`, so a package listed only in
+ * devDependencies — or one that arrived only as some other package's
+ * dependency — is missing there. v2.8.9 crashed at start on every plugin
+ * install: `js-yaml` (server/lib/lane-detect.js) was a devDependency that
+ * `redoc` used to pull in, and dropping `redoc` took it away. Machines with
+ * Debian's global /usr/share/nodejs never saw it, so this checks the manifest
+ * instead of trusting a local `require` to fail.
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+const { describe, it } = require("node:test");
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const { builtinModules } = require("node:module");
+
+const ROOT = path.join(__dirname, "..", "..");
+const pkg = require(path.join(ROOT, "package.json"));
+
+// Required only behind a runtime check, never on a plain Node server.
+const GUARDED = new Set(["electron"]);
+
+function sourceFiles(dir) {
+  const out = [];
+  for (const e of fs.readdirSync(dir, { withFileTypes: true })) {
+    const p = path.join(dir, e.name);
+    if (e.isDirectory()) {
+      if (!["node_modules", "__tests__", "vendor"].includes(e.name)) out.push(...sourceFiles(p));
+    } else if (/\.(c?js|mjs)$/.test(e.name)) out.push(p);
+  }
+  return out;
+}
+
+/** Bare package names `file` requires, comments left out. */
+function requiredPackages(file) {
+  const code = fs
+    .readFileSync(file, "utf8")
+    .replace(/\/\*[\s\S]*?\*\//g, "")
+    .replace(/(^|[^:"'`\\])\/\/.*$/gm, "$1");
+  const names = new Set();
+  for (const m of code.matchAll(/\brequire\(\s*["']([^"'./][^"']*)["']\s*\)/g)) {
+    const spec = m[1];
+    if (spec.startsWith("node:")) continue;
+    const name = spec.startsWith("@") ? spec.split("/").slice(0, 2).join("/") : spec.split("/")[0];
+    if (!builtinModules.includes(name)) names.add(name);
+  }
+  return names;
+}
+
+describe("runtime dependencies", () => {
+  it("every package server/ requires is in dependencies or optionalDependencies", () => {
+    const runtime = new Set([
+      ...Object.keys(pkg.dependencies || {}),
+      ...Object.keys(pkg.optionalDependencies || {}),
+    ]);
+    const missing = [];
+    for (const file of sourceFiles(path.join(ROOT, "server"))) {
+      for (const name of requiredPackages(file)) {
+        if (!runtime.has(name) && !GUARDED.has(name))
+          missing.push(`${path.relative(ROOT, file)}: ${name}`);
+      }
+    }
+    assert.deepEqual(missing, []);
+  });
+});

server/__tests__/server-mode-account-pool.test.js

@@ -4,7 +4,8 @@
  * admin may add or remove an account, each change needs the admin's OWN
  * password again (EREAUTH), the token only goes in — no answer (the add, the
  * list) ever carries it — the audit log names the account, not its secret, and
- * in local mode the routes refuse.
+ * in local mode the routes refuse. An admin pins a user to one account
+ * (`PUT /api/accounts/pins`): that user's new panes skip the balancer.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -144,3 +145,112 @@ describe("the account pool from the Users page", () => {
     assert.ok(claudePool.pickAccount(), "team-1 is still there");
   });
 });
+
+describe("pinning a user to one account", () => {
+  const pins = require("../lib/account-pins");
+  const pin = (cookie, body) =>
+    call("PUT", "/api/accounts/pins", {
+      cookie,
+      body: { tool: "claude", currentPassword: BOSS_PASS, ...body },
+    });
+
+  it("lets an admin pin and unpin, audited, and new panes follow the pin", async () => {
+    const boss = await login("boss", BOSS_PASS);
+    const miaId = db.prepare("SELECT id FROM users WHERE username = 'mia'").get().id;
+    claudePool.addAccount("team-z", `sk-ant-oat01-${"z".repeat(40)}`);
+    assert.equal(claudePool.pickAccount(null, miaId).name, "team-1", "the balancer's pick");
+    const r = await pin(boss, { userId: miaId, account: "team-z" });
+    assert.equal(r.status, 200);
+    assert.deepEqual(r.body.pin, { userId: miaId, username: "mia", account: "team-z" });
+    assert.equal(r.body.switched, "next-session", "a setup-token goes in at the next spawn");
+    assert.equal(claudePool.pickAccount(null, miaId).name, "team-z");
+    assert.equal(claudePool.pickAccount(null, null).name, "team-1", "nobody else moves");
+    const audit = db.prepare("SELECT owner_id, path FROM audit_log ORDER BY id DESC LIMIT 1").get();
+    assert.equal(audit.owner_id, miaId);
+    assert.match(audit.path, /pin mia to claude account team-z/);
+    const list = await call("GET", "/api/accounts", { cookie: boss });
+    assert.deepEqual(
+      list.body.pins.claude.map((p) => [p.username, p.account]),
+      [["mia", "team-z"]]
+    );
+    assert.deepEqual(list.body.pins.codex, []);
+    const off = await pin(boss, { userId: miaId, account: null });
+    assert.equal(off.body.pin.account, null);
+    assert.equal(claudePool.pickAccount(null, miaId).name, "team-1");
+    claudePool.removeAccount("team-z");
+  });
+
+  it("refuses an unknown account or user, a wrong password, and a non-admin", async () => {
+    const boss = await login("boss", BOSS_PASS);
+    const miaId = db.prepare("SELECT id FROM users WHERE username = 'mia'").get().id;
+    assert.equal(
+      (await pin(boss, { userId: miaId, account: "nope" })).body.error.code,
+      "ENOACCOUNT"
+    );
+    assert.equal((await pin(boss, { userId: 9999, account: "team-1" })).body.error.code, "ENOUSER");
+    assert.equal(
+      (await pin(boss, { userId: miaId, account: "team-1", currentPassword: "x" })).body.error.code,
+      "EREAUTH"
+    );
+    const ana = await login("ana", "analyst-pass-1");
+    const w = await call("PUT", "/api/accounts/pins", {
+      cookie: ana,
+      body: { tool: "claude", userId: miaId, account: "team-1", currentPassword: "analyst-pass-1" },
+    });
+    assert.equal(w.status, 403);
+    assert.equal(pins.pinFor(miaId, "claude"), null);
+  });
+
+  it("sets exactly who runs on one account from its Edit", async () => {
+    const boss = await login("boss", BOSS_PASS);
+    const id = (name) => db.prepare("SELECT id FROM users WHERE username = ?").get(name).id;
+    claudePool.addAccount("team-y", `sk-ant-oat01-${"y".repeat(40)}`);
+    pins.setPin(id("ana"), "claude", "team-1");
+    const edit = (account, userIds, extra = {}) =>
+      call("PUT", `/api/accounts/${account}/users`, {
+        cookie: boss,
+        body: { tool: "claude", userIds, currentPassword: BOSS_PASS, ...extra },
+      });
+    const r = await edit("team-y", [id("mia"), id("ana")]);
+    assert.equal(r.status, 200);
+    assert.deepEqual(r.body.added.map((u) => [u.username, u.switched]).sort(), [
+      ["ana", "next-session"],
+      ["mia", "next-session"],
+    ]);
+    assert.equal(pins.pinFor(id("ana"), "claude"), "team-y", "moved off team-1");
+    const again = await edit("team-y", [id("mia")]);
+    assert.deepEqual(again.body.added, []);
+    assert.deepEqual(
+      again.body.removed.map((u) => u.username),
+      ["ana"]
+    );
+    assert.equal(pins.pinFor(id("ana"), "claude"), null);
+    assert.equal(pins.pinFor(id("mia"), "claude"), "team-y");
+    const audit = db.prepare("SELECT path FROM audit_log ORDER BY id DESC LIMIT 1").get();
+    assert.match(audit.path, /unpin ana from claude/);
+    assert.equal((await edit("team-y", [9999])).body.error.code, "ENOUSER");
+    assert.equal((await edit("team-y", "x")).body.error.code, "EBADUSER");
+    assert.equal((await edit("nope", [])).body.error.code, "ENOACCOUNT");
+    assert.equal((await edit("team-y", [], { currentPassword: "x" })).body.error.code, "EREAUTH");
+    assert.equal(pins.pinFor(id("mia"), "claude"), "team-y", "a refused edit changes nothing");
+    await edit("team-y", []);
+    claudePool.removeAccount("team-y");
+  });
+
+  it("is ignored in local mode and dropped with its user", async () => {
+    const miaId = db.prepare("SELECT id FROM users WHERE username = 'mia'").get().id;
+    pins.setPin(miaId, "claude", "team-1");
+    delete process.env.AGENTHUB_MODE;
+    try {
+      assert.equal(pins.pinFor(miaId, "claude"), null);
+    } finally {
+      process.env.AGENTHUB_MODE = "server";
+    }
+    assert.equal(pins.pinFor(miaId, "claude"), "team-1");
+    db.prepare("DELETE FROM users WHERE id = ?").run(miaId);
+    assert.equal(
+      db.prepare("SELECT COUNT(*) AS n FROM account_pins WHERE user_id = ?").get(miaId).n,
+      0
+    );
+  });
+});

server/__tests__/server-s3-handoff.test.js

@@ -114,7 +114,7 @@ describe("a member pane's files live in the member's handoff dir", () => {
     assert.deepEqual(x.addDirs, [ctx]);
     assert.equal(fs.readFileSync(path.join(ctx, "spec.md"), "utf8"), "# spec\n");
     assert.equal(mode(path.join(ctx, "spec.md")), 0o644);
-    assert.equal(x.systemPromptFile, path.join(HANDOFF, `prompt-${laneId}.md`));
+    assert.equal(x.systemPromptFile, path.join(HANDOFF, `prompt-${laneId}`, "CLAUDE.md"));
     assert.equal(mode(x.systemPromptFile), 0o644);
     const text = fs.readFileSync(x.systemPromptFile, "utf8");
     assert.match(text, /Be brief\./);

server/db.js

@@ -1873,6 +1873,18 @@ for (const col of ["display_name", "email", "avatar_at"]) {
     db.prepare(`ALTER TABLE users ADD COLUMN ${col} TEXT`).run();
   }
 }
+// An admin's pin of one server-mode user to one pool account per tool
+// (server/lib/account-pins.js): that user's new sessions skip the balancer.
+// The account is named, not referenced — the pool lives in files.
+db.exec(`
+  CREATE TABLE IF NOT EXISTS account_pins (
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    tool TEXT NOT NULL CHECK(tool IN ('claude','codex')),
+    account TEXT NOT NULL,
+    pinned_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
+    PRIMARY KEY (user_id, tool)
+  );
+`);
 
 // An existing database made before auto_vacuum: the setting is stored only by
 // a VACUUM, which rewrites the whole file under an exclusive lock. Done here,

server/lib/account-pins.js

@@ -0,0 +1,144 @@
+/**
+ * @file account-pins.js
+ * @description Account pins: an admin's choice that one server-mode user's
+ * new sessions of a tool run on one named pool account instead of the one the
+ * balancer would pick (claude-pool.js / codex-pool.js `pick`) — the Users
+ * page's "switch a user's account". One pin per user and tool
+ * (`account_pins`); the user is the workspace's OWNER
+ * (`lanes.owner_id`), never whoever clicked Start. A pin is a preference the
+ * pool still bounds: an account a pane may not use (expired, or a login the
+ * pane's home cannot take) falls back to the balancer. A Claude login is
+ * written into the user's home right away (`applyPin`), over the pool login
+ * their running panes use, so those move to it without a restart.
+ *
+ * `setAccountUsers` is the Users page's Edit of one account: who runs on it.
+ *
+ * Server mode only: in local mode there are no users and nothing is pinned.
+ * Removing the account drops its pins (`dropAccount`); deleting the user drops
+ * theirs (ON DELETE CASCADE, and `auth.deleteUser`).
+ * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
+ */
+
+const TOOLS = ["claude", "codex"];
+
+const err = (code, message) => Object.assign(new Error(message), { code });
+const db = () => require("../db").db;
+const poolOf = (tool) => require(tool === "codex" ? "./codex-pool" : "./claude-pool");
+
+function validTool(tool) {
+  if (!TOOLS.includes(tool)) throw err("EBADTOOL", "tool: claude or codex");
+  return tool;
+}
+
+/** The account name `ownerId`'s new `tool` sessions are pinned to, or null. */
+function pinFor(ownerId, tool) {
+  if (!require("./auth").isServerMode() || !Number.isInteger(ownerId)) return null;
+  try {
+    return (
+      db()
+        .prepare("SELECT account FROM account_pins WHERE user_id = ? AND tool = ?")
+        .get(ownerId, tool)?.account ?? null
+    );
+  } catch {
+    return null; // a spawn never fails over a pin
+  }
+}
+
+/** Every pin of `tool`, with its user's name: `[{userId, username, account, pinnedAt}]`. */
+function listPins(tool) {
+  return db()
+    .prepare(
+      `SELECT p.user_id AS userId, u.username, p.account, p.pinned_at AS pinnedAt
+         FROM account_pins p JOIN users u ON u.id = p.user_id
+        WHERE p.tool = ? ORDER BY u.username`
+    )
+    .all(validTool(tool));
+}
+
+/**
+ * Pin `userId`'s new `tool` sessions to `account`, or unpin them (`account`
+ * null). Returns `{userId, username, account}`.
+ */
+function setPin(userId, tool, account) {
+  validTool(tool);
+  const user = Number.isInteger(userId)
+    ? db().prepare("SELECT id, username FROM users WHERE id = ?").get(userId)
+    : null;
+  if (!user) throw err("ENOUSER", `no user ${userId}`);
+  if (account == null || account === "") {
+    db().prepare("DELETE FROM account_pins WHERE user_id = ? AND tool = ?").run(user.id, tool);
+    return { userId: user.id, username: user.username, account: null };
+  }
+  const name = String(account);
+  if (!poolOf(tool).hasAccount(name)) {
+    throw err("ENOACCOUNT", `no ${tool} account ${name} in the pool`);
+  }
+  db()
+    .prepare(
+      `INSERT INTO account_pins (user_id, tool, account) VALUES (?, ?, ?)
+       ON CONFLICT(user_id, tool) DO UPDATE SET account = excluded.account,
+         pinned_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now')`
+    )
+    .run(user.id, tool, name);
+  return { userId: user.id, username: user.username, account: name };
+}
+
+/**
+ * The Users page's Edit of one account: exactly `userIds` run on `account`
+ * afterwards. A user pinned to another account of the tool moves here; one
+ * pinned here but left out goes back to the balancer. One transaction.
+ * Returns `{added, removed}` (each `[{userId, username}]`).
+ */
+function setAccountUsers(tool, account, userIds) {
+  validTool(tool);
+  const name = String(account ?? "");
+  if (!poolOf(tool).hasAccount(name)) {
+    throw err("ENOACCOUNT", `no ${tool} account ${name} in the pool`);
+  }
+  if (!Array.isArray(userIds) || !userIds.every(Number.isInteger)) {
+    throw err("EBADUSER", "userIds: an array of user ids");
+  }
+  const want = [...new Set(userIds)];
+  const users = want.map((id) => {
+    const u = db().prepare("SELECT id, username FROM users WHERE id = ?").get(id);
+    if (!u) throw err("ENOUSER", `no user ${id}`);
+    return u;
+  });
+  const before = listPins(tool);
+  const here = new Set(before.filter((p) => p.account === name).map((p) => p.userId));
+  const added = users.filter((u) => !here.has(u.id));
+  const removed = before.filter((p) => p.account === name && !want.includes(p.userId));
+  db().transaction(() => {
+    for (const u of added) setPin(u.id, tool, name);
+    for (const p of removed) setPin(p.userId, tool, null);
+  })();
+  return {
+    added: added.map((u) => ({ userId: u.id, username: u.username })),
+    removed: removed.map((p) => ({ userId: p.userId, username: p.username })),
+  };
+}
+
+/**
+ * Make a pin take effect now where it can: a Claude login is written into
+ * the user's home at once (claude-pool `switchHome`), so their running panes
+ * move to it without a restart. Anything else goes in at the next spawn.
+ * Answers what happened (see `switchHome`).
+ */
+async function applyPin(userId, tool) {
+  const pin = pinFor(userId, tool);
+  if (!pin || tool !== "claude") return "next-session";
+  const user = db().prepare("SELECT username FROM users WHERE id = ?").get(userId);
+  const member = user ? require("./run-as").accountForUser(user.username) : null;
+  return poolOf(tool).switchHome(member, pin);
+}
+
+/** A removed account takes its pins with it. */
+function dropAccount(tool, account) {
+  try {
+    db().prepare("DELETE FROM account_pins WHERE tool = ? AND account = ?").run(tool, account);
+  } catch {
+    /* no database (a bare CLI test): nothing pinned */
+  }
+}
+
+module.exports = { TOOLS, pinFor, listPins, setPin, setAccountUsers, applyPin, dropAccount };

server/lib/auth.js

@@ -367,6 +367,7 @@ function deleteUser(username) {
   } catch {
     /* no personal profiles */
   }
+  sql("DELETE FROM account_pins WHERE user_id = ?").run(u.id);
   sql("DELETE FROM users WHERE id = ?").run(u.id);
   return { id: u.id, username: u.username, workspaces: lanes.length };
 }

server/lib/claude-pool.js

@@ -18,6 +18,10 @@
  *   3. least $ spent in the last 5 hours, then in the last 7 days — the
  *      sessions its runs (`dashboard_runs.account`) held, over the hours they
  *      held them (pool-usage.js).
+ * An admin may switch a user to one account (account-pins.js): that user's
+ * panes skip the ranking whenever they may use it, and a login is written
+ * into their home at once (`switchHome`) — running panes take it at their
+ * next credentials read, without a restart.
  * The quota is read with the account's own token in the background, at most
  * every `QUOTA_TTL_MS`; a token the usage endpoint refuses simply has no
  * reading, and ranking falls back to spend.
@@ -193,6 +197,7 @@ function removeAccount(name) {
     }
   }
   fs.rmSync(fileOf(n));
+  require("./account-pins").dropAccount("claude", n);
   quotaCache.delete(n);
 }
 
@@ -332,6 +337,40 @@ async function refreshLogins() {
   }
 }
 
+/**
+ * An admin's switch (account-pins.js): put pool login `name` into `member`'s
+ * home NOW, over the pool login it holds — never over a login the member made
+ * themselves. Every home's newer pair is copied back first (refreshLogins),
+ * so the login leaving the home keeps its only live refresh token. Running
+ * panes are not restarted: Claude Code takes the new pair when it next
+ * re-reads its credentials (before a refresh), new panes at once. Answers
+ * `switched`, `kept` (already there), `own-login` (left alone), `expired`, or
+ * `next-session` (a setup-token, or no member home: it goes in at spawn).
+ */
+async function switchHome(member, name) {
+  const first = readAccount(validName(name));
+  if (!first) throw err("ENOACCOUNT", `no account ${name} in the pool`);
+  if (first.kind !== "login" || !member || member.host) return "next-session";
+  await refreshLogins();
+  const a = readAccount(first.name);
+  if (!a || expired(a)) return "expired";
+  const disk = homeCreds(member);
+  if (disk && ownsHome(a, member.name, disk)) return "kept";
+  const holder = disk && allAccounts().find((x) => ownsHome(x, member.name, disk));
+  if (disk && !holder) return "own-login";
+  if (holder) {
+    const placed = { ...holder.placed };
+    delete placed[member.name];
+    save({ ...holder, placed });
+  }
+  save(writeLogin(a, member));
+  runAs().markClaudeOnboarded(member, {
+    ...(a.account ? { oauthAccount: a.account } : {}),
+    ...(a.userID ? { userID: a.userID } : {}),
+  });
+  return "switched";
+}
+
 // ── Quota, read in the background ──────────────────────────────────────────
 
 /** name → { at, fiveHour?, sevenDay?, error? } */
@@ -434,10 +473,15 @@ function liveInHome(name, member) {
     });
 }
 
-/** The full record a new Claude pane should run on, or null. `member` = run-as account. */
+/**
-function pick(member) {
+ * The full record a new Claude pane should run on, or null. `member` = run-as
+ * account; `ownerId` = the workspace owner, whose pin (account-pins.js) wins
+ * over the ranking when this pane may use that account.
+ */
+function pick(member, ownerId = null) {
   let usable = allAccounts().filter((a) => !expired(a));
   if (usable.length === 0) return null;
+  let live = null;
   if (!member) {
     // A host pane's home holds the host's own login — a pool account only when
     // it was moved in from there (`hostHolds`) and is still the pair on disk:
@@ -453,10 +497,18 @@ function pick(member) {
     } else {
       // One .credentials.json per home: while a pane of theirs runs on a
       // pool login, the next pane stays on that one.
-      const live = usable.find((a) => a.kind === "login" && liveInHome(a.name, member));
+      // The login in the home is the one they run on — after an admin's
+      // switch (switchHome) it is no longer the one those panes started on.
+      const liveLogin = usable.find((a) => a.kind === "login" && liveInHome(a.name, member));
+      live = liveLogin ? placed || liveLogin : null;
+    }
+  }
+  // A pinned token goes in by env and wins outright; a pinned login waits
+  // while another login holds this home.
+  const pin = require("./account-pins").pinFor(ownerId, "claude");
+  const pinned = pin ? usable.find((a) => a.name === pin) : null;
+  if (pinned && (pinned.kind === "token" || !live || live === pinned)) return pinned;
   if (live) return live;
-    }
-  }
   if (usable.length === 0) return null;
   refreshQuotas().catch(() => {});
   const ranked = usable
@@ -489,8 +541,8 @@ function pick(member) {
  * background re-read. A `login` is offered for a member, and for a host pane
  * only when it is the host's own login (`hostHolds`), which stays as it is.
  */
-function pickAccount(member = null) {
+function pickAccount(member = null, ownerId = null) {
-  const a = pick(member);
+  const a = pick(member, ownerId);
   if (!a) return null;
   return a.kind === "login"
     ? { name: a.name, kind: "login" }
@@ -502,8 +554,8 @@ function pickAccount(member = null) {
  * `env` goes through tmux `-e` (a member's launch file); `place()` runs just
  * before the pane starts and writes a login into the member's home.
  */
-function forSpawn(member = null) {
+function forSpawn(member = null, ownerId = null) {
-  const a = pick(member);
+  const a = pick(member, ownerId);
   if (!a) return null;
   if (a.kind === "token") {
     return { name: a.name, env: { CLAUDE_CODE_OAUTH_TOKEN: a.token }, place: () => {} };
@@ -524,8 +576,12 @@ function forSpawn(member = null) {
   };
 }
 
+/** Is `name` an account in the pool (any state)? */
+const hasAccount = (name) => NAME_RE.test(String(name)) && Boolean(readAccount(String(name)));
+
 module.exports = {
   BLOCK_PERCENT,
+  hasAccount,
   REFRESH_AHEAD_MS,
   addAccount,
   addLoginAccount,
@@ -533,6 +589,7 @@ module.exports = {
   poolStatus,
   pickAccount,
   forSpawn,
+  switchHome,
   refreshQuotas,
   refreshLogins,
   __read: readAccount,

server/lib/codex-pool.js

@@ -29,6 +29,7 @@
  * the last 5 h, then 7 d. The reading is the newest `rate_limits` in the
  * rollouts of the sessions that account's runs started (no network), each
  * from the CODEX_HOME of the account its workspace runs as.
+ * A user an admin pinned to one account (account-pins.js) skips the ranking.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -139,6 +140,7 @@ function removeAccount(name) {
   const n = validName(name);
   if (!readAccount(n)) throw err("ENOACCOUNT", `no account ${n} in the pool`);
   fs.rmSync(fileOf(n));
+  require("./account-pins").dropAccount("codex", n);
   quotaCache = null;
 }
 
@@ -332,10 +334,15 @@ function syncBack() {
 
 // ── Picking ────────────────────────────────────────────────────────────────
 
-/** The full record a new Codex pane should run on, or null. `member` = run-as account. */
+/**
-function pick(member) {
+ * The full record a new Codex pane should run on, or null. `member` = run-as
+ * account; `ownerId` = the workspace owner, whose pin (account-pins.js) wins
+ * over the ranking when this pane may use that account.
+ */
+function pick(member, ownerId = null) {
   let usable = allAccounts();
   if (usable.length === 0) return null;
+  let live = null;
   if (!member) {
     // A host pane's CODEX_HOME holds the host's own login.
     usable = usable.filter((a) => a.kind === "apikey");
@@ -348,10 +355,15 @@ function pick(member) {
     } else {
       // One auth.json per home: while a pane of theirs runs on a pool
       // login, the next pane stays on that one.
-      const live = usable.find((a) => a.kind === "chatgpt" && liveInHome(a.name, member));
+      live = usable.find((a) => a.kind === "chatgpt" && liveInHome(a.name, member)) || null;
+    }
+  }
+  // A pinned API key goes in by env and wins outright; a pinned ChatGPT login
+  // waits while another login holds this home.
+  const pin = require("./account-pins").pinFor(ownerId, "codex");
+  const pinned = pin ? usable.find((a) => a.name === pin) : null;
+  if (pinned && (pinned.kind === "apikey" || !live || live === pinned)) return pinned;
   if (live) return live;
-    }
-  }
   if (usable.length === 0) return null;
   const ranked = usable
     .map((a) => {
@@ -395,8 +407,8 @@ function liveInHome(name, member) {
 }
 
 /** `{name, kind}` of the account a new Codex pane would get, or null. */
-function pickAccount(member = null) {
+function pickAccount(member = null, ownerId = null) {
-  const a = pick(member);
+  const a = pick(member, ownerId);
   return a ? { name: a.name, kind: a.kind } : null;
 }
 
@@ -405,8 +417,8 @@ function pickAccount(member = null) {
  * this pane may use): `{name, argv, env, place}`. `env` goes through tmux `-e`
  * (a member's launch file); `place()` runs just before the pane starts.
  */
-function forSpawn(member = null) {
+function forSpawn(member = null, ownerId = null) {
-  const a = pick(member);
+  const a = pick(member, ownerId);
   if (!a) return null;
   if (a.kind === "apikey") {
     const provider = `{name="OpenAI (AgentHub pool)",base_url="https://api.openai.com/v1",env_key="${KEY_ENV}",wire_api="responses"}`;
@@ -439,8 +451,12 @@ function forSpawn(member = null) {
   };
 }
 
+/** Is `name` an account in the pool? */
+const hasAccount = (name) => NAME_RE.test(String(name)) && Boolean(readAccount(String(name)));
+
 module.exports = {
   BLOCK_PERCENT,
+  hasAccount,
   addAccount,
   removeAccount,
   poolStatus,

server/lib/lane-sources.js

@@ -7,7 +7,7 @@
  * workspace's own folder and not be or contain the OS home; an uploaded file
  * is stored by AgentHub under `<data dir>/workspace-context/<laneId>/` with a
  * name it chooses, so a request never names a path on disk. Only Claude
- * (`--add-dir`, `--append-system-prompt-file=`) and Codex (`--add-dir`,
+ * (`--add-dir`, the instructions as a CLAUDE.md in a folder of their own) and Codex (`--add-dir`,
  * `-c developer_instructions=`) can take them; every other tool is reported
  * unsupported and its panes get nothing. The workspace OWNER's own agent
  * instructions (`user_prefs.instructions`, Settings → My agent instructions)
@@ -184,7 +184,9 @@ function removeSource(laneId, sourceId) {
 function removeLaneContext(laneId) {
   const dir = contextDir(laneId);
   if (ownsFile(dir)) fs.rmSync(dir, { recursive: true, force: true });
-  fs.rmSync(path.join(getDataDir(), "workspace-prompts", `${Number(laneId)}.md`), { force: true });
+  const prompts = path.join(getDataDir(), "workspace-prompts");
+  fs.rmSync(path.join(prompts, String(Number(laneId))), { recursive: true, force: true });
+  fs.rmSync(path.join(prompts, `${Number(laneId)}.md`), { force: true }); // before v2.8.9
 }
 
 /** Instructions text as stored: a string of at most MAX_INSTRUCTIONS, blank ⇒ null. */
@@ -286,18 +288,23 @@ function launchExtras(laneId, tool) {
   // A data dir that cannot be written costs the pane its instructions (all of
   // Claude's, Codex's past the inline budget), never its start — same as a
   // vanished source.
+  // The file is a `CLAUDE.md` alone in a folder of its own: Claude reads it as
+  // memory from that folder (`--add-dir` + CLAUDE_CODE_ADDITIONAL_DIRECTORIES_
+  // CLAUDE_MD, pty-run.js), not as `--append-system-prompt-file` — a custom
+  // system prompt is a launch flag Claude cannot carry over a restart, so it
+  // refused `/tui` (switching renderer restarts the session) in every pane
+  // that had instructions. Codex names the same file in its pointer line.
   try {
+    const sub = `prompt-${Number(laneId)}`;
     if (member) {
-      const file = require("./run-as").handoffWrite(
+      const runAs = require("./run-as");
-        member,
+      runAs.mkdirAs(member, path.join(runAs.handoffDir(member), sub));
-        `prompt-${Number(laneId)}.md`,
+      const file = runAs.handoffWrite(member, path.join(sub, "CLAUDE.md"), systemPrompt);
-        systemPrompt
-      );
       return { addDirs, systemPrompt, systemPromptFile: file };
     }
-    const dir = path.join(getDataDir(), "workspace-prompts");
+    const dir = path.join(getDataDir(), "workspace-prompts", String(Number(laneId)));
     fs.mkdirSync(dir, { recursive: true, mode: 0o700 });
-    const systemPromptFile = path.join(dir, `${Number(laneId)}.md`);
+    const systemPromptFile = path.join(dir, "CLAUDE.md");
     fs.writeFileSync(systemPromptFile, systemPrompt, { mode: 0o600 });
     return { addDirs, systemPrompt, systemPromptFile };
   } catch (err) {

server/lib/pty-run.js

@@ -202,7 +202,10 @@ function buildClaudeArgv({
   // `--add-dir` is VARIADIC (`<directories...>`): it swallows every following
   // argument up to the next option, so it goes first, where `--permission-mode`
   // always ends it — after the prompt it would eat the prompt as a directory.
-  if (addDirs.length) argv.push("--add-dir", ...addDirs);
+  // The instructions' own folder rides along: its CLAUDE.md is read as memory
+  // (see lane-sources.js launchExtras), so `/tui` can still restart the pane.
+  const dirs = systemPromptFile ? [...addDirs, path.dirname(systemPromptFile)] : addDirs;
+  if (dirs.length) argv.push("--add-dir", ...dirs);
   argv.push("--permission-mode", permissionMode || "auto");
   // Inside a pane Claude Code sees $TMUX and opens agent-team teammates with
   // `split-window -P -F '#{pane_id}'`. psmux ignores -F, so the id it reads
@@ -220,9 +223,6 @@ function buildClaudeArgv({
   // `=` form: `-w [name]` takes an OPTIONAL value and would otherwise swallow
   // the prompt as the worktree's name.
   if (worktreeName) argv.push(`--worktree=${worktreeName}`);
-  // From a file: the instructions can be long, and the whole argv has to fit
-  // in one tmux message. `=` form, so the path is never read as an option.
-  if (systemPromptFile) argv.push(`--append-system-prompt-file=${systemPromptFile}`);
   // Puts "bypass permissions" INTO the pane's shift+tab cycle without turning
   // it on: `claude --help` — "Enable bypassing all permission checks as an
   // option, without it being enabled by default." Without it the cycle is only
@@ -461,19 +461,20 @@ function spawnRun(args) {
   assertCwdAccount(laneId, cwd); // ECWDACCOUNT
   const proxyProfile = resolveProxy(tool, proxy, laneOwner); // EBADPROXY, EUNSUPPORTED
   // A Claude session on the vendor's own API runs on the least-loaded pool
-  // account, if the admin added any (claude-pool.js); an AI Proxy brings its
+  // account, if the admin added any (claude-pool.js) — or the one the
+  // workspace owner is pinned to (account-pins.js); an AI Proxy brings its
   // own key, and an empty pool leaves the machine's login in charge.
   // A real login (kind `login`) is written into a MEMBER's home by place();
   // a setup-token goes in as CLAUDE_CODE_OAUTH_TOKEN.
   const poolAccount =
     entry.launcher === "claude" && !proxyProfile
-      ? require("./claude-pool").forSpawn(require("./run-as").accountForLane(laneId))
+      ? require("./claude-pool").forSpawn(require("./run-as").accountForLane(laneId), laneOwner)
       : null;
   // Codex likewise, from its own pool (codex-pool.js): an API key through
   // `-e`, or a ChatGPT login written into the member's CODEX_HOME by place().
   const codexPool =
     entry.launcher === "codex" && !proxyProfile
-      ? require("./codex-pool").forSpawn(require("./run-as").accountForLane(laneId))
+      ? require("./codex-pool").forSpawn(require("./run-as").accountForLane(laneId), laneOwner)
       : null;
   const paneCred = require("./auth").newPaneToken();
   if (forkSession === true) {
@@ -626,6 +627,11 @@ function spawnRun(args) {
     // journals and the proxy layer `-p <name>` loads live there — and the
     // tmux server's own env may predate, or never have had, CODEX_HOME.
     ...(tool === "codex" ? { CODEX_HOME: getCodexHome() } : {}),
+    // The workspace's instructions are a CLAUDE.md in an `--add-dir` folder,
+    // which Claude reads only with this set (lane-sources.js launchExtras).
+    ...(entry.launcher === "claude" && systemPromptFile
+      ? { CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD: "1" }
+      : {}),
     // No CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN: an inline claude duplicated its
     // output whenever the pane narrowed (tmux re-wraps the full-width rules and
     // pushes lines into history its redraw cannot clear). The user's own

server/openapi-extra/auth.js

@@ -5,6 +5,8 @@
  *   - POST /api/auth/logout  (Auth)
  *   - GET  /api/accounts     (Auth) — the Claude and Codex account pools, no keys or tokens
  *   - POST /api/accounts, DELETE /api/accounts/{name} (Auth) — an admin adds/removes one
+ *   - PUT  /api/accounts/pins (Auth) — an admin pins a user to one pool account
+ *   - PUT  /api/accounts/{name}/users (Auth) — an account's Edit: exactly who runs on it
  *   - GET  /api/users        (Auth) — every account's usage (admin/analyst)
  *   - GET  /api/users/audit  (Auth) — staff reads of developers' sessions
  *   - GET/PUT /api/me/prefs, POST /api/me/onboarded (Auth) — the account's own UI preferences
@@ -30,6 +32,16 @@ const tags = [
 ];
 
 const schemas = {
+  AccountPin: {
+    type: "object",
+    required: ["userId", "username", "account"],
+    properties: {
+      userId: { type: "integer" },
+      username: { type: "string" },
+      account: { type: "string", description: "The pool account's name" },
+      pinnedAt: { type: "string" },
+    },
+  },
   UserPrefs: {
     type: "object",
     required: ["prefs", "onboardedAt"],
@@ -633,6 +645,15 @@ const paths = {
                       },
                     },
                   },
+                  pins: {
+                    type: "object",
+                    description:
+                      "Per tool, the users an admin pinned to one account (empty in local mode)",
+                    properties: {
+                      claude: { type: "array", items: { $ref: "#/components/schemas/AccountPin" } },
+                      codex: { type: "array", items: { $ref: "#/components/schemas/AccountPin" } },
+                    },
+                  },
                   codex: {
                     type: "array",
                     description:
@@ -706,6 +727,41 @@ const paths = {
       },
     },
   },
+  "/api/accounts/pins": {
+    put: {
+      tags: ["Auth"],
+      operationId: "pinPoolAccount",
+      summary:
+        "Admin: switch one user's sessions of a tool to one pool account (`account: null` = automatic), with their own password again. A Claude login is written into their home at once; running panes take it without a restart",
+      requestBody: {
+        required: true,
+        content: {
+          "application/json": {
+            schema: {
+              type: "object",
+              required: ["tool", "userId", "currentPassword"],
+              properties: {
+                tool: { type: "string", enum: ["claude", "codex"] },
+                userId: { type: "integer" },
+                account: { type: "string", nullable: true },
+                currentPassword: { type: "string" },
+              },
+            },
+          },
+        },
+      },
+      responses: {
+        200: {
+          description:
+            "`{pin: {userId, username, account}, switched}` — `account` null when unpinned; `switched`: switched | kept | own-login | expired | next-session | null",
+        },
+        400: err("EBADTOOL"),
+        403: err("EREAUTH — wrong password; EADMIN — not an admin; ELOCALMODE"),
+        404: err("ENOUSER, ENOACCOUNT"),
+        429: err("ETOOMANY — too many wrong passwords"),
+      },
+    },
+  },
   "/api/accounts/profiles": {
     get: {
       tags: ["Auth"],
@@ -716,6 +772,41 @@ const paths = {
       },
     },
   },
+  "/api/accounts/{name}/users": {
+    put: {
+      tags: ["Auth"],
+      operationId: "setPoolAccountUsers",
+      summary:
+        "Admin: exactly these users run on this pool account (a user on another account moves here; one left out goes back to the balancer), with their own password again. A Claude login is written into each added user's home at once",
+      parameters: [{ name: "name", in: "path", required: true, schema: { type: "string" } }],
+      requestBody: {
+        required: true,
+        content: {
+          "application/json": {
+            schema: {
+              type: "object",
+              required: ["tool", "userIds", "currentPassword"],
+              properties: {
+                tool: { type: "string", enum: ["claude", "codex"] },
+                userIds: { type: "array", items: { type: "integer" } },
+                currentPassword: { type: "string" },
+              },
+            },
+          },
+        },
+      },
+      responses: {
+        200: {
+          description:
+            "`{added: [{userId, username, switched}], removed: [{userId, username}]}` — `switched`: switched | kept | own-login | expired | next-session",
+        },
+        400: err("EBADTOOL, EBADUSER"),
+        403: err("EREAUTH — wrong password; EADMIN — not an admin; ELOCALMODE"),
+        404: err("ENOUSER, ENOACCOUNT"),
+        429: err("ETOOMANY — too many wrong passwords"),
+      },
+    },
+  },
   "/api/accounts/{name}": {
     delete: {
       tags: ["Auth"],

server/routes/accounts.js

@@ -16,6 +16,12 @@
  * refreshes); `credentials` — the text of a `.credentials.json` (or a macOS
  * Keychain item's JSON); or `token` — a `claude setup-token` token. A Codex
  * one is an OpenAI API key or the text of an `auth.json` (`token`).
+ * `PUT /pins` (`{tool, userId, account}`, `account: null` unpins) pins one
+ * user's sessions of a tool to one pool account (account-pins.js) — a Claude
+ * login goes into their home at once, so running panes move without a
+ * restart (`switched`); `PUT /:name/users` (`{tool, userIds}`) is the
+ * Users page's Edit of one account — exactly those users run on it; `GET /`
+ * lists the pins under `pins`.
  * `GET /profiles` lists the saved profiles that can be moved in (identity only). Like every Users-page change
  * they need the admin's own password again (`currentPassword`), are audited
  * (the account NAME only), and refuse in local mode. The secret only goes IN:
@@ -29,6 +35,7 @@ const codexPool = require("../lib/codex-pool");
 const auth = require("../lib/auth");
 const { recordAccountChange } = require("../lib/audit");
 const profiles = require("../lib/cc-profiles");
+const pins = require("../lib/account-pins");
 
 const router = Router();
 
@@ -39,6 +46,9 @@ router.get("/", async (req, res) => {
     res.json({
       accounts: pool.poolStatus(),
       codex: codexPool.poolStatus(),
+      pins: auth.isServerMode()
+        ? { claude: pins.listPins("claude"), codex: pins.listPins("codex") }
+        : { claude: [], codex: [] },
       blockPercent: pool.BLOCK_PERCENT,
     });
   } catch (e) {
@@ -69,9 +79,11 @@ const STATUS = {
   ELOCALMODE: 403,
   EREAUTH: 403,
   EBADTOOL: 400,
+  EBADUSER: 400,
   EBADNAME: 400,
   EBADTOKEN: 400,
   ENOACCOUNT: 404,
+  ENOUSER: 404,
   EEXISTS: 409,
   ETOOMANY: 429,
   ESTALE: 409, // a pasted login whose refresh token was already spent
@@ -93,7 +105,9 @@ function poolChange(handler) {
       }
       await auth.confirmPassword(req.user, body.currentPassword);
       const out = await handler(req, body);
-      recordAccountChange(req.user.id, null, req.method, out.action);
+      for (const a of out.audits || [{ target: out.target, action: out.action }]) {
+        recordAccountChange(req.user.id, a.target ?? null, req.method, a.action);
+      }
       res.status(out.status || 200).json(out.json);
     } catch (e) {
       const status = STATUS[e.code];
@@ -203,6 +217,58 @@ router.post(
   })
 );
 
+router.put(
+  "/pins",
+  poolChange(async (_req, body) => {
+    const pin = pins.setPin(Number(body.userId), body.tool, body.account ?? null);
+    const switched = pin.account
+      ? await applyNow(pin.userId, pin.username, body.tool, pin.account)
+      : null;
+    return {
+      json: { pin, switched },
+      target: pin.userId,
+      action: pin.account
+        ? `pool: pin ${pin.username} to ${body.tool} account ${pin.account}`
+        : `pool: unpin ${pin.username} from ${body.tool}`,
+    };
+  })
+);
+
+/** Switch an added user now; a failed switch still leaves the pin for the next spawn. */
+async function applyNow(userId, username, tool, account) {
+  try {
+    return await pins.applyPin(userId, tool);
+  } catch (e) {
+    console.warn(`[accounts] switch ${username} → ${account}: ${e.message}`);
+    return "next-session";
+  }
+}
+
+router.put(
+  "/:name/users",
+  poolChange(async (req, body) => {
+    const account = req.params.name;
+    const { added, removed } = pins.setAccountUsers(body.tool, account, body.userIds);
+    const switched = [];
+    for (const u of added) {
+      switched.push({ ...u, switched: await applyNow(u.userId, u.username, body.tool, account) });
+    }
+    return {
+      json: { added: switched, removed },
+      audits: [
+        ...added.map((u) => ({
+          target: u.userId,
+          action: `pool: pin ${u.username} to ${body.tool} account ${account}`,
+        })),
+        ...removed.map((u) => ({
+          target: u.userId,
+          action: `pool: unpin ${u.username} from ${body.tool}`,
+        })),
+      ],
+    };
+  })
+);
+
 router.delete(
   "/:name",
   poolChange((req, body) => {