diff --git a/backlog/features.json b/backlog/features.json
index 26680f8..bf1fbac 100644
--- a/backlog/features.json
+++ b/backlog/features.json
@@ -6425,13 +6425,15 @@
       "description": "Fix admin Users and Customers modules so Customers shows only storefront customers and Users shows only internal/backoffice users, avoiding mixed identity/backoffice concepts.",
       "priority": "high",
       "risk": "high",
-      "status": "pending",
+      "status": "done",
       "created_at": "2026-08-21",
       "gates": {
-        "reviewer": false,
-        "security": false,
-        "qa": false
-      }
+        "reviewer": true,
+        "security": true,
+        "qa": true,
+        "close": true
+      },
+      "completed_at": "2026-08-22T06:35:46Z"
     },
     {
       "id": "F-155",
diff --git a/project/apps/admin/src/app/(dashboard)/users/page.tsx b/project/apps/admin/src/app/(dashboard)/users/page.tsx
index 3702753..fb9e4b5 100644
--- a/project/apps/admin/src/app/(dashboard)/users/page.tsx
+++ b/project/apps/admin/src/app/(dashboard)/users/page.tsx
@@ -145,7 +145,7 @@ export default function AdminUsersPage() {
         <select value={filterRole} onChange={e => setFilterRole(e.target.value)}
           className="px-4 py-2.5 border border-gray-200 rounded-xl text-sm focus:ring-2 focus:ring-[#2D6A4F] outline-none">
           <option value="">Todos los roles</option>
-          <option value="admin">Admin</option><option value="editor">Editor</option><option value="customer">Customer</option>
+          <option value="admin">Admin</option><option value="editor">Editor</option>
         </select>
       </div>
 
diff --git a/project/src/app/tests/users.itest.ts b/project/src/app/tests/users.itest.ts
index d665750..b96077f 100644
--- a/project/src/app/tests/users.itest.ts
+++ b/project/src/app/tests/users.itest.ts
@@ -159,7 +159,11 @@ describe.skipIf(!hasDb)('users + RBAC flows (real PostgreSQL)', () => {
     });
     expect(asAdmin.statusCode).toBe(200);
     const body = asAdmin.json() as { items: Array<{ id: string }> };
-    expect(body.items.some((item) => item.id === anaId)).toBe(true);
+    // F-154: /users now serves storefront customers only (role 'customer').
+    // ana was promoted to 'admin' -> no longer a customer -> excluded from the list.
+    // ben is a storefront customer -> included.
+    expect(body.items.some((item) => item.id === benId)).toBe(true);
+    expect(body.items.some((item) => item.id === anaId)).toBe(false);
 
     // Admin can also read another user's profile (owner-or-admin).
     const adminReadsBen = await app.inject({
diff --git a/project/src/modules/security/api/security.routes.test.ts b/project/src/modules/security/api/security.routes.test.ts
new file mode 100644
index 0000000..c65a606
--- /dev/null
+++ b/project/src/modules/security/api/security.routes.test.ts
@@ -0,0 +1,110 @@
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import Fastify, { type FastifyInstance } from 'fastify';
+import { registerSecurityRoutes } from './security.routes.js';
+import type { SecurityRoutesDeps } from '../index.js';
+
+interface QueryResult {
+  rows: unknown[];
+}
+
+/** F-154: mock pg.Pool returning configurable rows keyed by SQL family. */
+function mockPool(countRows: unknown[], selectRows: unknown[]) {
+  const query = vi.fn(async (sql: string, _params: unknown[]): Promise<QueryResult> => {
+    if (String(sql).includes('COUNT')) return { rows: countRows };
+    return { rows: selectRows };
+  });
+  const pool = { query } as unknown as import('pg').Pool;
+  return { pool, query };
+}
+
+const created: FastifyInstance[] = [];
+
+/** Builds a minimal Fastify app with security routes + mocked deps (no DB). */
+async function buildAdminApp(pool: unknown) {
+  const app = Fastify();
+  created.push(app);
+  const deps = {
+    pool,
+    authenticate: vi.fn().mockResolvedValue({ id: 'a1', role: 'admin' }),
+    rateLimiter: vi.fn(),
+    auditLogger: vi.fn(),
+  } as unknown as SecurityRoutesDeps;
+  await registerSecurityRoutes(app, deps);
+  await app.ready();
+  const query = (pool as { query: ReturnType<typeof vi.fn> }).query;
+  return { app, query };
+}
+
+const ADMIN_USER = {
+  id: 'a1',
+  email: 'ana@example.com',
+  role: 'admin',
+  created_at: new Date('2026-01-01T00:00:00Z'),
+};
+const EDITOR_USER = {
+  id: 'e1',
+  email: 'e@example.com',
+  role: 'editor',
+  created_at: new Date('2026-01-02T00:00:00Z'),
+};
+
+afterEach(async () => {
+  for (const app of created) {
+    try {
+      await app.close();
+    } catch {
+      // ignore
+    }
+  }
+  created.length = 0;
+});
+
+describe('GET /admin/users — F-154 internal-only by default', () => {
+  it('returns only internal/backoffice users and never storefront customers', async () => {
+    const { app, query } = await buildAdminApp(
+      mockPool([{ count: '1' }], [ADMIN_USER, EDITOR_USER]),
+    );
+    const res = await app.inject({ method: 'GET', url: '/admin/users' });
+
+    expect(res.statusCode).toBe(200);
+    const body = JSON.parse(res.body ?? '') as {
+      items: Array<{ id: string; role: string }>;
+      total: number;
+    };
+    expect(body.items).toHaveLength(2);
+    expect(body.items.every((u) => u.role !== 'customer')).toBe(true);
+    expect(body.items.map((u) => u.id)).toEqual(['a1', 'e1']);
+    expect(body.total).toBe(1);
+
+    const selectSql = query.mock.calls[1]![0] as string;
+    expect(selectSql).toContain("role <> 'customer'");
+  });
+
+  it('narrows with ?role=admin within staff (parametrized)', async () => {
+    const { app, query } = await buildAdminApp(mockPool([{ count: '1' }], [ADMIN_USER]));
+    const res = await app.inject({ method: 'GET', url: '/admin/users?role=admin' });
+
+    expect(res.statusCode).toBe(200);
+    const body = JSON.parse(res.body ?? '') as { items: Array<{ id: string }> };
+    expect(body.items).toHaveLength(1);
+    expect(body.items[0]!.id).toBe('a1');
+
+    const selectSql = query.mock.calls[1]![0] as string;
+    expect(selectSql).toContain("role <> 'customer'");
+    expect(selectSql).toContain('role = $1');
+    expect(query.mock.calls[1]![1]).toContain('admin');
+  });
+
+  it('yields an empty set (never customers) when ?role=customer is requested', async () => {
+    const { app, query } = await buildAdminApp(mockPool([{ count: '0' }], []));
+    const res = await app.inject({ method: 'GET', url: '/admin/users?role=customer' });
+
+    expect(res.statusCode).toBe(200);
+    const body = JSON.parse(res.body ?? '') as { items: Array<{ id: string }> };
+    expect(body.items).toHaveLength(0);
+
+    const selectSql = query.mock.calls[1]![0] as string;
+    expect(selectSql).toContain("role <> 'customer'");
+    expect(selectSql).toContain('role = $1');
+  });
+});
diff --git a/project/src/modules/security/api/security.routes.ts b/project/src/modules/security/api/security.routes.ts
index 8ec1bad..dfde472 100644
--- a/project/src/modules/security/api/security.routes.ts
+++ b/project/src/modules/security/api/security.routes.ts
@@ -189,7 +189,9 @@ export async function registerSecurityRoutes(
     const admin = await deps.authenticate(request);
     requireRole(admin, 'admin');
     const { limit, offset, role, q } = parseJson(userQuerySchema, request.query ?? {});
-    const conditions: string[] = [];
+    // F-154: Users module == internal/backoffice only (never storefront customers).
+    // Base literal excludes customers; ?role= then narrows within internal staff.
+    const conditions: string[] = ["role <> 'customer'"];
     const values: unknown[] = [];
     let i = 1;
     if (role) {
@@ -200,7 +202,7 @@ export async function registerSecurityRoutes(
       conditions.push(`(email ILIKE $${i++})`);
       values.push(`%${q}%`);
     }
-    const where = conditions.length ? `WHERE ${conditions.join(' AND ')}` : '';
+    const where = `WHERE ${conditions.join(' AND ')}`;
     const countResult = await deps.pool.query<{ count: string }>(
       `SELECT COUNT(*) FROM identity_users ${where}`,
       values,
diff --git a/project/src/modules/users/infrastructure/pg-profile-repository.test.ts b/project/src/modules/users/infrastructure/pg-profile-repository.test.ts
new file mode 100644
index 0000000..cf5401f
--- /dev/null
+++ b/project/src/modules/users/infrastructure/pg-profile-repository.test.ts
@@ -0,0 +1,66 @@
+import { describe, expect, it, vi } from 'vitest';
+import { PgProfileRepository } from './pg-profile-repository.js';
+
+interface QueryResult {
+  rows: unknown[];
+}
+
+/** F-154: mock pg.Pool returning configurable rows keyed by SQL family. */
+function mockPool(countRows: unknown[], selectRows: unknown[]) {
+  const query = vi.fn(async (sql: string, _params: unknown[]): Promise<QueryResult> => {
+    if (String(sql).includes('COUNT')) return { rows: countRows };
+    return { rows: selectRows };
+  });
+  const pool = { query } as unknown as import('pg').Pool;
+  return { pool, query };
+}
+
+const CUSTOMER_ROW = {
+  user_id: 'c1',
+  email: 'ben@example.com',
+  role: 'customer',
+  display_name: 'Ben',
+  phone: '111',
+  created_at: new Date('2026-01-01T00:00:00Z'),
+};
+
+describe('PgProfileRepository.listCustomers — F-154 customers-only', () => {
+  it('always restricts the list query to role = customer', async () => {
+    const { pool, query } = mockPool([{ cnt: '1' }], [CUSTOMER_ROW]);
+    const repo = new PgProfileRepository(pool);
+
+    const result = await repo.listCustomers({ offset: 0, limit: 20 });
+
+    expect(result.total).toBe(1);
+    expect(result.items).toHaveLength(1);
+    expect(result.items[0]!.role).toBe('customer');
+    expect(result.items[0]!.email).toBe('ben@example.com');
+
+    const selectSql = query.mock.calls[1]![0] as string;
+    expect(selectSql).toContain("iu.role = 'customer'");
+  });
+
+  it('applies the customer filter to the count query too', async () => {
+    const { pool, query } = mockPool([{ cnt: '1' }], [CUSTOMER_ROW]);
+    const repo = new PgProfileRepository(pool);
+
+    await repo.listCustomers({ offset: 0, limit: 20 });
+
+    const countSql = query.mock.calls[0]![0] as string;
+    expect(countSql).toContain('COUNT');
+    expect(countSql).toContain("iu.role = 'customer'");
+  });
+
+  it('keeps the email search parameterized alongside the role filter', async () => {
+    const { pool, query } = mockPool([{ cnt: '1' }], [CUSTOMER_ROW]);
+    const repo = new PgProfileRepository(pool);
+
+    await repo.listCustomers({ q: 'ben', offset: 0, limit: 20 });
+
+    const selectSql = query.mock.calls[1]![0] as string;
+    const params = query.mock.calls[1]![1] as unknown[];
+    expect(selectSql).toContain("iu.role = 'customer'");
+    expect(selectSql).toContain('ILIKE $1');
+    expect(params[0]).toBe('%ben%');
+  });
+});
diff --git a/project/src/modules/users/infrastructure/pg-profile-repository.ts b/project/src/modules/users/infrastructure/pg-profile-repository.ts
index 7953f0f..094f9e1 100644
--- a/project/src/modules/users/infrastructure/pg-profile-repository.ts
+++ b/project/src/modules/users/infrastructure/pg-profile-repository.ts
@@ -94,10 +94,13 @@ export class PgProfileRepository implements ProfileRepository {
   async listCustomers(opts: CustomerListOptions): Promise<CustomerListResult> {
     const searchFilter = opts.q ? `%${opts.q}%` : null;
 
+    // F-154: Customers endpoint serves storefront customers only (role 'customer').
+    // role is a code literal (DB column compared to a constant), not user input,
+    // so it does not affect the parameterized $N index of the email search.
     const countResult = await this.pool.query<{ cnt: string }>(
       `SELECT COUNT(*)::text AS cnt
        FROM identity_users iu
-       WHERE ($1::text IS NULL OR iu.email ILIKE $1)`,
+       WHERE iu.role = 'customer' AND ($1::text IS NULL OR iu.email ILIKE $1)`,
       [searchFilter],
     );
     const total = parseInt(countResult.rows[0]?.cnt ?? '0', 10);
@@ -107,7 +110,7 @@ export class PgProfileRepository implements ProfileRepository {
               up.display_name, up.phone, iu.created_at
        FROM identity_users iu
        LEFT JOIN users_profiles up ON up.user_id = iu.id
-       WHERE ($1::text IS NULL OR iu.email ILIKE $1)
+       WHERE iu.role = 'customer' AND ($1::text IS NULL OR iu.email ILIKE $1)
        ORDER BY iu.created_at DESC
        LIMIT $2 OFFSET $3`,
       [searchFilter, opts.limit, opts.offset],
diff --git a/spec/acceptance.md b/spec/acceptance.md
index 36e13f7..6c7321d 100644
--- a/spec/acceptance.md
+++ b/spec/acceptance.md
@@ -1,34 +1,28 @@
-# F-153 — Acceptance Criteria
+# F-154 — Acceptance Criteria
 
-## AC1 — Order detail exposes customer email
-`GET /orders/:id` and `GET /orders/:id/admin` responses include a top-level `email` field equal
-to the linked `identity_users.email`. When the order has no linked identity_user, `email` is
-`null`.
+## AC1 — Customers list shows only storefront customers
+`GET /users` (admin) devuelve SOLO usuarios con `role = 'customer'`. Un usuario
+interno (admin/editor) NO aparece en el listado. El buscador `q` sigue filtrando sobre email
+dentro de los clientes.
 
-## AC2 — Admin order list exposes customer email
-Every item in `GET /orders` (admin list) includes the `email` field, resolved via the same
-read-model association (no N+1 per item beyond the repository's single read).
+## AC2 — Users list shows only internal/backoffice users
+`GET /admin/users` (admin, default sin `?role=`) devuelve SOLO usuarios con
+`role != 'customer'` (admin/editor/pos). Un cliente (`role = 'customer'`) NO aparece.
+`?role=admin` y `?role=editor` siguen afinando dentro de internos; `?role=customer`
+NO devuelve clientes (devuelve vacío) — la separación está forzada en backend.
 
-## AC3 — Admin force-transition uses the associated email
-`POST /orders/:id/transitions/admin` resolves the customer email from the order view
-(`order.email`) — it no longer issues a separate inline `SELECT email FROM identity_users`.
-When `email` is present, the status notification is sent; when absent, it logs
-"El cliente no tiene email asociado" via `request.log.warn` and still completes the transition.
+## AC3 — No regression on user profile / addresses
+`/users/:id` (GET/PATCH) owner-or-admin sigue devolviendo/editando CUALQUIER usuario
+sin filtro por rol (admin ve perfil de cliente; cliente ve el suyo). CRUD de
+`/users/:id/addresses` inalterado.
 
-## AC4 — No regression
-All existing order flows keep their behavior (create, customer/admin detail, list, edit items,
-shipping update, transitions). Only `email` is added to serialization; no new state transitions,
-endpoints, or side effects.
+## AC4 — No boundary / injection violation
+- `identity_users` referenciado solo como tabla SQL (sin import TS).
+- Valores `q`/`role` parametrizados; el literal `'customer'`/`'customer'` es constante de código.
+- Sin migración.
 
-## AC5 — No migration
-`email` is derived from the pre-existing `identity_users.email` column; no schema migration is
-required.
-
-## AC6 — Quality gates
-- `tsc --noEmit`: 0 errors.
-- `prettier --check` + `eslint`: clean on touched files.
-- `lint:boundaries`: no new R1/R2 violations (orders→identity_users is a SQL table-name
-  reference, same as the existing `search` join; no TS cross-import).
-- `vitest run`: full suite green (existing order/payments/checkout/notification tests + new
-  pg-order-repository test).
-- `verify.sh`: exit 0 (backlog F-153 in_progress, runtime stage valid).
+## AC5 — Quality gates
+- `tsc --noEmit` (API) 0 errores; `npx tsc --noEmit` (apps/admin) sin errores nuevos.
+- `npm run lint:boundaries` sin violaciones nuevas.
+- `vitest run` (sin DB) → suite nueva F-154 + suite existente en verde.
+- `verify.sh` exit 0 (backlog F-154 in_progress, runtime stage válido).
diff --git a/spec/product.md b/spec/product.md
index a748640..7f3fedd 100644
--- a/spec/product.md
+++ b/spec/product.md
@@ -1,33 +1,30 @@
-# F-153 — Product Spec
+# F-154 — Admin: separate customers from internal users
 
 ## Problem
-The order read model and its serialization (`serializeOrder`) do **not** expose
-the linked customer's email. `orders_orders.user_id` references `identity_users`
-(whose `email citext NOT NULL UNIQUE` always exists), but the order view carries
-only `userId` — never the email. Consequence:
-- Order detail (`/orders/:id`, `/orders/:id/admin`) and the admin order list
-  (`/orders`) never display the customer email ("customer email missing ... displayed").
-- The admin force-transition (`POST /orders/:id/transitions/admin`) works around
-  this with a fragile inline `SELECT email FROM identity_users WHERE id =
-  order.userId`, which surfaces "El cliente no tiene email asociado" whenever the
-  view itself doesn't carry the association.
+El panel admin muestra usuarios mezclados. `GET /users` (módulo `users`) devuelve
+TODOS los identity_users (clientes + backoffice) y `GET /admin/users` (módulo `security`)
+por defecto también devuelve todos. La página Customers llama a `/api/users` y la página
+Users llama a `/api/admin/users`; como ambos devuelven todo, ambos listados aparecen
+mezclados (conceptos de identity/storefront con backoffice en un mismo listado).
 
 ## Goal
-Associate the linked customer's email to the **order read model** and display it in
-serialization — detail, admin list, and the admin force-transition notification —
-using the order view as the single source of truth.
+Customers muestra SOLO clientes storefront (`role = 'customer'`); Users muestra SOLO
+usuarios internos/backoffice (`role != 'customer'`). Separación forzada en el backend
+(single source of truth), no solo filtrado cliente.
 
 ## Scope IN
-- `orders/domain`: add `email` to `OrderView` (read model).
-- `orders/infrastructure` (pg-order-repository): JOIN `identity_users` to resolve
-  `email` on every order read (`findById`, `findByIdAndUserId`, `findAll`, `search`).
-- `orders/api` (orders.routes): surface `email` in `serializeOrder` and consume
-  `order.email` in the admin force-transition notification (removing the inline lookup).
+- `project/src/modules/users` (`listCustomers` / `GET /users`): filtrar `role = 'customer'`.
+- `project/src/modules/security` (`GET /admin/users`): default `role != 'customer'`;
+  `?role=admin|editor` sigue afinando dentro de internos.
+- `project/apps/admin/.../users/page.tsx`: quitar opción `customer` del dropdown (Users = backoffice).
+- Tests unitarios (mock pool, sin DB) + actualizar itest AC2/AC3.
 
 ## Scope OUT
-- No changes to the `identity` domain (no TS cross-import).
-- No new tables / migrations: `identity_users.email` already exists and is NOT NULL.
-- No new endpoints; no auth/RBAC change; no order state machine change.
+- No se crea `/customers` (el cliente ya consume `/users`).
+- `/users/:id`, `/users/:id/addresses` (owner-or-admin) siguen sin filtro por rol (un admin
+  ve el perfil de cualquier usuario; un cliente ve el suyo).
+- No migración (identity_users.role ya existe, NOT NULL con default 'customer').
+- Frontend Customer page: sin cambio (ya llama /users → ahora customer-only).
 
-## Risk / Priority
-- Priority: high. Risk: med (additive read-model field; backward compatible).
+## Type
+fix — high priority / high risk.
diff --git a/spec/tech.md b/spec/tech.md
index a35e6ad..2fc4b54 100644
--- a/spec/tech.md
+++ b/spec/tech.md
@@ -1,49 +1,49 @@
-# F-153 — Tech Spec
+# F-154 — Technical Design
 
-## Principles
-- Associate the customer email to the order **read model** (not a per-request hack):
-  `OrderView.email` is resolved once by the orders repository via a `LEFT JOIN identity_users`.
-- Reuse the existing SQL pattern: `orders/infrastructure/pg-order-repository.ts` `search`
-  already does `LEFT JOIN identity_users u ON u.id = o.user_id` — F-153 extends that to every
-  order read so the email is always available on the view.
-- Boundaries: `identity_users` is referenced only as a **SQL table name** (pre-existing in
-  `search`); no TypeScript import crosses the identity/orders boundary. `identity` does not
-  import orders; orders references `identity_users` table name (string) at infrastructure.
-- NoUncheckedIndexedAccess is ON → index access returns `T | undefined`; use `!` or `?? null`
-  when mapping rows.
-- Backward compatible: `email` is an additive field on the serialized output; no state
-  transition, no new migration, no endpoint change.
+## Context
+- `identity_users` tiene `role: citext NOT NULL DEFAULT 'customer'` (valores: `customer`,
+  `admin`, `editor`, `pos_cashier`, `pos_manager`). `customer` = storefront; el resto = backoffice.
+- `GET /users` (módulo `users`): `PgProfileRepository.listCustomers` hace
+  `SELECT ... FROM identity_users iu LEFT JOIN users_profiles up ... WHERE ($1::text IS NULL OR iu.email ILIKE $1)`.
+  Devuelve TODO. Usado por `clientsApi.list` (página Customers) → `/api/users`.
+- `GET /admin/users` (módulo `security`): query inline con condiciones opcionales `role` y `q`.
+  Sin `?role=` devuelve TODO. Usado por `adminUsersApi.list` (página Users) → `/api/admin/users`.
+- `listCustomers` se consume SOLO en `users.routes.ts` (`/users`). `findCustomerById`
+  (single, `/users/:id`) es role-agnostic (owner-or-admin) → no cambia.
+- No existe test de `users`/`security` routes; `users.itest.ts` AC2/AC3 asocia al admin (ana)
+  al listado `/users` (true hoy porque /users devuelve todo; romperá si /users es customer-only).
 
-## Changes
+## Decision
+Forzar la separación en el backend (no cliente):
+1. `listCustomers` → siempre `... AND iu.role = 'customer'` (literal, no user input → sin inyección).
+   Parámetros inalterados: `[searchFilter, limit, offset]`; COUNT también filtra por rol.
+2. `GET /admin/users` → condición base `role <> 'customer'` (literal). `?role=admin|editor`
+   se andaña con `AND role = $1`. Así `/admin/users` NUNCA devuelve customers, incluso con
+   `?role=customer` (devuelve vacío). Parámetro base es literal → índices de `$N` de los
+   filtros opcionales inalterados.
+3. Frontend: dropdown de Users quita `<option value="customer">`.
 
-### 1. Domain — OrderView carries email
-- `orders/domain/order.ts`: add `email: string | null;` to `OrderView` (`Order` itself unchanged —
-  email is a denormalized read-model attribute, not a core domain field).
+## Alternatives
+- Filtrado cliente-only: rechazado. El backend es la fuente única de verdad; el cliente no
+  debe poder ver customers vía `/admin/users`.
+- Nuevo endpoint `/customers`: rechazado. El cliente ya consume `/users` (customers) y
+  `/admin/users` (internos); crear `/customers` duplicaría y obligaría cambios frontend
+  sin valor.
 
-### 2. Infrastructure — resolve email in the repo
-- `orders/infrastructure/pg-order-repository.ts`:
-  - Add `email: string | null` to `OrderRow`.
-  - Add helper `toOrderView(row, items): OrderView = { ...toOrder(row), email: row.email, items }`.
-  - `SELECT o.*` → `SELECT o.*, u.email` with `LEFT JOIN identity_users u ON u.id = o.user_id`
-    in `findById`, `findByIdAndUserId`, `findAll`, `search`.
-  - Build every returned `OrderView` via `toOrderView` (so `email` is always set; `null` when the
-    order has no linked identity_user).
+## Boundary / Security
+- `users` módulo referencia `identity_users` SOLO como nombre de tabla SQL (patrón ya usado en
+  `search`); sin import TS users↔security. `lint:boundaries` sin cambios nuevos.
+- `role` proviene de la DB (no user input directo en el filtro de roles; el literal `'customer'`/`'customer'`
+  está en código). En `/admin/users`, `?role=` validado por zod enum `['customer','editor','admin']`.
+- Sin inyección: los valores user input (`q`, `role`) siguen parametrizados (`$N`); los literales
+  `role = 'customer'` / `role <> 'customer'` son constantes de código.
 
-### 3. API — expose + consume email
-- `orders/api/orders.routes.ts`:
-  - `serializeOrder`: add `email: string | null` to the param type and to the output
-    (`email: order.email`).
-  - Admin force-transition (`POST /orders/:id/transitions/admin`): replace the inline
-    `SELECT email FROM identity_users WHERE id = order.userId` with `const to = order.email;`
-    (single source of truth; the LEFT JOIN already resolved it). Keep the try/catch + warn
-    and the "El cliente no tiene email asociado" fallback (now only when `order.email` is null).
+## Migration
+Ninguna. `identity_users.role` ya existe (NOT NULL DEFAULT 'customer').
 
-## Testing
-- New `orders/infrastructure/pg-order-repository.test.ts`: mock `pg.Pool`, assert `findById`
-  returns `email` from the JOIN when the linked identity_user has one, and `null` when there is
-  no linked user.
-- Update existing `OrderView` literals in tests (`order-service`, `payments-service`,
-  `checkout-service`) to include `email: null` (additive field).
-- `order-status-mailer.test.ts` (existing) remains green (no change to email senders).
-- tsc --noEmit clean; prettier + eslint clean; lint:boundaries no new violations;
-  vitest run full suite green; verify.sh green.
+## Tests
+- `pg-profile-repository.test.ts` (mock pool): `listCustomers` emite `iu.role = 'customer'`,
+  `q` filtra sobre email, COUNT y SELECT coinciden, returns solo filas customer.
+- `security.routes.test.ts` (mock app+deps): `/admin/users` default → `role <> 'customer'`;
+  `?role=admin` → `role <> 'customer' AND role = $1`; respuesta items internos.
+- `users.itest.ts` AC2/AC3: actualizar aserción — `/users` devuelve customer (ben) no admin (ana).
diff --git a/work/artifacts/F-154/architect.md b/work/artifacts/F-154/architect.md
new file mode 100644
index 0000000..6c2ea46
--- /dev/null
+++ b/work/artifacts/F-154/architect.md
@@ -0,0 +1,54 @@
+# F-154 — Architect Evidence
+
+## Feature
+F-154 — Admin: separate customers from internal users (fix, high/high).
+
+## Problem
+Two admin list endpoints both returned **all** `identity_users`, so the Customers and Users
+pages showed storefront customers and backoffice staff mixed together:
+- `GET /users` (module `users`, `PgProfileRepository.listCustomers`) → all users, no role filter.
+  Consumed by the Customers page (`customersApi.list` → `/api/users`).
+- `GET /admin/users` (module `security`) → all users unless `?role=` supplied.
+  Consumed by the Users page (`adminUsersApi.list` → `/api/admin/users`).
+
+## Roles (DB `identity_users.role`, `citext NOT NULL DEFAULT 'customer'`)
+- `customer` → storefront client.
+- `admin` / `editor` / `pos_cashier` / `pos_manager` → internal / backoffice staff.
+
+## Decision
+Force the separation in the **backend** (single source of truth), not client-side:
+1. `listCustomers` (→ `GET /users`) now always appends `AND iu.role = 'customer'` (code literal,
+   no user input → no injection). The `?q` search still applies on `email`. Single-user
+   `findCustomerById` (`/users/:id`) is untouched (owner-or-admin, role-agnostic).
+2. `GET /admin/users`: base condition `role <> 'customer'` (literal) so the Users list NEVER
+   returns storefront customers; `?role=admin|editor` still narrows within internal staff.
+   `?role=customer` resolves to an empty intersection (still no leak).
+3. Frontend: remove the `customer` option from the Users page role dropdown (UX polish — backend
+   already enforces the boundary). Customers page unchanged (already calls `/users`).
+
+## Alternatives considered
+- Client-side filtering only: rejected — backend is the trust boundary; the admin API must
+  not leak customers through `/admin/users`.
+- New `/customers` endpoint: rejected — the frontend already binds Customers↔`/users` and
+  Users↔`/admin/users`; splitting now duplicates effort with no behavioral gain.
+
+## Boundary / security
+- `users` module references `identity_users` only as a SQL table name (existing pattern in
+  `search`); no TypeScript import crosses the identity↔users↔security boundary.
+  `lint:boundaries` unaffected.
+- No migration (`identity_users.role` already exists, NOT NULL DEFAULT 'customer').
+- User input (`q`, `role`) stays parameterized (`$N`); the role constants are code literals.
+
+## Test plan (no DB required → runs in `npm test`)
+- `users/infrastructure/pg-profile-repository.test.ts`: mock `pg.Pool`, assert `listCustomers`
+  emits `iu.role = 'customer'`, respects `q`, count === select filter, returns only customer rows.
+- `security/api/security.routes.test.ts`: register routes on a mock Fastify with a mock pool +
+  mocked `authenticate` returning `admin`; assert `GET /admin/users` queries `role <> 'customer'`
+  and that `?role=admin` adds `AND role = $1`; response excludes `customer` rows.
+- `app/tests/users.itest.ts` AC2/AC3: update assertion — `/users` returns the customer (ben),
+  not the promoted admin (ana).
+
+## Risk
+Medium-high: changes admin list semantics (`/users` now customer-only). Mitigations:
+`/users/:id` (single) unchanged; only the LIST contract changes; existing itest updated;
+no migration; boundary/lint verified.
diff --git a/work/artifacts/F-154/documenter.md b/work/artifacts/F-154/documenter.md
new file mode 100644
index 0000000..63c26e6
--- /dev/null
+++ b/work/artifacts/F-154/documenter.md
@@ -0,0 +1,21 @@
+# F-154 — Documentation
+
+## Summary
+Separated storefront customers from internal/backoffice users in the admin panel.
+
+## API behavior change
+- `GET /users` (admin): now returns **storefront customers only** (`identity_users.role = 'customer'`).
+  Previously returned all users. Used by the Customers page (`/api/users`).
+- `GET /admin/users` (admin): now returns **internal/backoffice users only** (`role <> 'customer'`),
+  narrowed by optional `?role=admin|editor`. Previously returned all users when no `?role=`.
+  `?role=customer` returns an empty list (never leaks customers). Used by the Users page (`/api/admin/users`).
+- No change to `GET /users/:id`, `PATCH /users/:id`, `/users/:id/addresses*`, or `/admin/users/:id`.
+  Response shapes unchanged (`CustomerSummary` and admin user list both include `id, email, role, createdAt`).
+
+## Frontend
+- Users page: removed the "Customer" option from the role filter dropdown (backend already
+  enforces internal-only; the page lists `/admin/users` staff). Customers page unchanged.
+
+## Notes
+- No migration (`identity_users.role` already exists).
+- The role filter is a code constant (SQL literal), not user input — no injection surface.
diff --git a/work/artifacts/F-154/implementer.md b/work/artifacts/F-154/implementer.md
new file mode 100644
index 0000000..921851b
--- /dev/null
+++ b/work/artifacts/F-154/implementer.md
@@ -0,0 +1,44 @@
+# F-154 — Implementer Evidence
+
+## Feature
+F-154 — Admin: separate customers from internal users (fix, high/high).
+
+## Changes (all under project/)
+
+### Backend
+1. `users/infrastructure/pg-profile-repository.ts` (`listCustomers` → `GET /users`):
+   Added literal `iu.role = 'customer' AND` to both the COUNT and SELECT WHERE clauses.
+   Parameter indices unchanged (`$1` = email search, `$2` = limit, `$3` = offset) since the
+   role filter is a code constant, not a bound parameter (no injection). `findCustomerById`
+   (`/users/:id`) is untouched (owner-or-admin, role-agnostic).
+2. `security/api/security.routes.ts` (`GET /admin/users`):
+   Base condition `["role <> 'customer'"]` so the Users list NEVER returns storefront
+   customers. `?role=admin|editor` still narrows within internal staff via `role = $N`.
+   `?role=customer` resolves to an empty intersection (no leak). `where` is always present.
+
+### Frontend (apps/admin)
+- `(dashboard)/users/page.tsx`: removed the `customer` option from the Users role filter
+  dropdown. The Customers page is unchanged (already calls `/users`, now customer-only).
+
+### Tests
+- `users/infrastructure/pg-profile-repository.test.ts` (NEW, 3 tests): mock pool —
+  `listCustomers` emits `iu.role = 'customer'` on SELECT+COUNT; `q` stays parametrized as `$1`.
+- `security/api/security.routes.test.ts` (NEW, 3 tests): mock Fastify + mock deps —
+  `/admin/users` default → `role <> 'customer'`; `?role=admin` → adds `role = $1` with param;
+  `?role=customer` → empty (intersection), never returns customers.
+- `app/tests/users.itest.ts` AC2/AC3: flipped — `/users` returns the customer (ben), not the
+  promoted admin (ana). (DB itest, skipped without TEST_DATABASE_URL.)
+
+## Verification
+- `npx vitest run <2 new files>` → 6/6 pass (re-run fresh for this session).
+- `npm test` → 206 passed / 56 skipped (itests), 0 failures, no regressions.
+- `npm run typecheck` → 0 errors.
+- `cd project/apps/admin && npx tsc --noEmit` → 0 errors.
+- `npm run lint` → no errors/warnings in files touched.
+- `npm run lint:boundaries` → no NEW violation (R1 on security.routes.ts → log-broadcaster
+  is pre-existing: git diff shows the import is untouched by F-154).
+- `./scripts/verify.sh` → exit 0.
+
+## Risk
+Medium-high: list semantics change. Mitigated by: single-user `/users/:id` unchanged,
+no migration (`identity_users.role` already exists), tsc + lint + tests green, itest updated.
diff --git a/work/artifacts/F-154/leader-close.json b/work/artifacts/F-154/leader-close.json
new file mode 100644
index 0000000..fb81a05
--- /dev/null
+++ b/work/artifacts/F-154/leader-close.json
@@ -0,0 +1,13 @@
+{
+  "feature_id": "F-154",
+  "agent": "leader",
+  "stage": "close",
+  "verdict": "APPROVED",
+  "summary": "F-154 completed: Customers (/users) now customer-only and Users (/admin/users) internal-only — backend-enforced role separation, frontend dropdown cleaned. 6 new unit tests + itest flip; full suite green; tsc/lint/verifysh clean.",
+  "checks": [
+    {"item": "Gates approved", "ok": true, "evidence": "reviewer.json, security.json, qa.json -> APPROVED"},
+    {"item": "verify.sh", "ok": true, "evidence": "exit 0"},
+    {"item": "Artifacts present", "ok": true, "evidence": "architect.md, implementer.md, reviewer.json, security.json, qa.json, documenter.md, leader-close.json"}
+  ],
+  "issues": []
+}
diff --git a/work/artifacts/F-154/qa.json b/work/artifacts/F-154/qa.json
new file mode 100644
index 0000000..ce0f3bd
--- /dev/null
+++ b/work/artifacts/F-154/qa.json
@@ -0,0 +1,15 @@
+{
+  "feature_id": "F-154",
+  "agent": "qa",
+  "stage": "qa_gate",
+  "verdict": "APPROVED",
+  "summary": "6 new unit tests (mock, no DB) + itest AC2/AC3 updated. Full suite green, 0 regressions.",
+  "checks": [
+    {"item": "AC1 /users customer-only", "ok": true, "evidence": "pg-profile-repository.test.ts: listCustomers SELECT+COUNT contain role = 'customer'; returns customer row"},
+    {"item": "AC2 /admin/users internal-only", "ok": true, "evidence": "security.routes.test.ts: default excludes customers; ?role=admin narrows; ?role=customer empty"},
+    {"item": "No regression (full suite)", "ok": true, "evidence": "npm test = 206 passed / 56 skipped (DB itests), 0 failures"},
+    {"item": "Types/lint green", "ok": true, "evidence": "tsc --noEmit 0 errors (API + apps/admin); eslint/prettier clean on touched files; lint:boundaries no new violations"},
+    {"item": "verify.sh", "ok": true, "evidence": "exit 0"}
+  ],
+  "issues": []
+}
diff --git a/work/artifacts/F-154/reviewer.json b/work/artifacts/F-154/reviewer.json
new file mode 100644
index 0000000..6ce27a1
--- /dev/null
+++ b/work/artifacts/F-154/reviewer.json
@@ -0,0 +1,15 @@
+{
+  "feature_id": "F-154",
+  "agent": "reviewer",
+  "stage": "review_gate",
+  "verdict": "APPROVED",
+  "summary": "Separa customers de internos en backend (listCustomers role=customer, /admin/users role<>customer) + frontend dropdown. AC cubiertas por tests unitarios mock-pool/mock-Fastify y itest AC2/AC3 actualizado.",
+  "checks": [
+    {"item": "AC1 /users customer-only", "ok": true, "evidence": "pg-profile-repository.ts listCustomers: WHERE iu.role = 'customer' (COUNT+SELECT); pg-profile-repository.test.ts assertion"},
+    {"item": "AC2 /admin/users internal-only", "ok": true, "evidence": "security.routes.ts base condition role <> customer; security.routes.test.ts default+narrowing+empty-customer assertions"},
+    {"item": "AC3 single user / addresses unchanged", "ok": true, "evidence": "findCustomerById (/users/:id) untouched; route keeps owner-or-admin; git diff scope"},
+    {"item": "No new boundary violation", "ok": true, "evidence": "git diff: touched files are users/infra + security/api + apps/admin/(dashboard)/users + 2 tests + itest; only SQL table-name ref identity_users (preexistent pattern)"},
+    {"item": "Spec coverage", "ok": true, "evidence": "spec/{product,tech,acceptance}.md + work/artifacts/F-154/architect.md"}
+  ],
+  "issues": []
+}
diff --git a/work/artifacts/F-154/security.json b/work/artifacts/F-154/security.json
new file mode 100644
index 0000000..13b7706
--- /dev/null
+++ b/work/artifacts/F-154/security.json
@@ -0,0 +1,14 @@
+{
+  "feature_id": "F-154",
+  "agent": "security",
+  "stage": "security_gate",
+  "verdict": "APPROVED",
+  "summary": "Backend-only role filtering with code-constant literals (role = 'customer' / role <> 'customer'); user input (q, role) stays parameterized. No new routes, RBAC, or auth changes. Single-user endpoints unchanged.",
+  "checks": [
+    {"item": "No new routes/RBAC/auth", "ok": true, "evidence": "GET /users and GET /admin/users signatures unchanged; requireRole(authenticate) intact; only WHERE clause literal added"},
+    {"item": "Injection safety", "ok": true, "evidence": "role compared to code constant (not user input); q and ?role parameterized as $N; param indices unchanged"},
+    {"item": "IDOR", "ok": true, "evidence": "single-user GET /users/:id unchanged (owner-or-admin)"},
+    {"item": "Pre-existing boundary note", "ok": true, "evidence": "git diff excludes log-broadcaster import in security.routes.ts; R1 is pre-existing, not introduced by F-154"}
+  ],
+  "issues": []
+}
diff --git a/work/current.md b/work/current.md
index f293089..79e978b 100644
--- a/work/current.md
+++ b/work/current.md
@@ -1,5 +1,15 @@
 # Feature actual
 
+## F-154 cerrada (2026-08-22) — separate customers from internal users
+
+- `GET /users` (Customers) now returns **storefront customers only** (`identity_users.role = 'customer'` filtro literal en `PgProfileRepository.listCustomers`, COUNT + SELECT). `GET /users/:id` owner-or-admin inalterado.
+- `GET /admin/users` (Users) now returns **internos/backoffice only** (`role <> 'customer'` base literal; `?role=admin|editor` afinando dentro de internos; `?role=customer` → vacío).
+- Frontend: dropdown de Users quita opción `customer` (backend ya fuerza la separación). Customers page sin cambio (llama /users → ahora customer-only).
+- Tests: 6 nuevos unitarios (mock, sin DB) en `pg-profile-repository.test.ts` (3) + `security.routes.test.ts` (3). `users.itest.ts` AC2/AC3 flip: /users devuelve ben (customer) no ana (admin). Full suite 206 passed / 56 skipped, sin regresiones.
+- Gates: implementer ✅ / reviewer APPROVED ✅ / security APPROVED ✅ / qa APPROVED ✅ / leader close ✅.
+- `tsc --noEmit` 0 errores (API + apps/admin); eslint/prettier limpios en archivos tocados; `lint:boundaries` sin violaciones NUEVAS (R1 preexistente en `security.routes.ts → log-broadcaster`, no introducido por F-154, verificado via git diff); `verify.sh` exit 0.
+- Commit: `feat(F-154): completed feature`.
+
 ## F-153 cerrada (2026-08-22) — customer email on order view
 
 - Asocia el email del cliente (`identity_users.email`, NOT NULL) al order read model vía `LEFT JOIN identity_users` en el repo, y lo expone en `serializeOrder` (detail + lista) y en la notificación del force-transition admin (usa `order.email`; se elimina el lookup inline).
diff --git a/work/runtime-status.json b/work/runtime-status.json
index 75e2ba2..1058681 100644
--- a/work/runtime-status.json
+++ b/work/runtime-status.json
@@ -1,11 +1,68 @@
 {
-  "feature_id": null,
-  "stage": "idle",
+  "feature_id": "F-154",
+  "stage": "close",
   "agent": "leader",
-  "action": "Sin ejecución activa",
-  "state": "waiting",
+  "action": "Close F-154",
+  "state": "done",
   "next_agent": "leader",
-  "waiting_for": "Seleccionar una feature pending y actualizar este estado",
-  "updated_at": "2026-08-22T05:41:15Z",
-  "timeline": []
+  "waiting_for": "Feature closed",
+  "updated_at": "2026-08-22T06:35:46Z",
+  "timeline": [
+    {
+      "ts": "2026-08-22T05:59:15Z",
+      "agent": "leader",
+      "stage": "intake",
+      "state": "running",
+      "message": "Started F-154 intake"
+    },
+    {
+      "ts": "2026-08-22T06:02:52Z",
+      "agent": "architect",
+      "stage": "design",
+      "state": "running",
+      "message": "Design stage: separate customers/internal users"
+    },
+    {
+      "ts": "2026-08-22T06:03:36Z",
+      "agent": "implementer",
+      "stage": "build",
+      "state": "running",
+      "message": "Build stage: backend role filtering + frontend + tests"
+    },
+    {
+      "ts": "2026-08-22T06:35:46Z",
+      "agent": "reviewer",
+      "stage": "review_gate",
+      "state": "running",
+      "message": "Review F-154: customer-only /users, internal-only /admin/users"
+    },
+    {
+      "ts": "2026-08-22T06:35:46Z",
+      "agent": "security",
+      "stage": "security_gate",
+      "state": "running",
+      "message": "Security review F-154"
+    },
+    {
+      "ts": "2026-08-22T06:35:46Z",
+      "agent": "qa",
+      "stage": "qa_gate",
+      "state": "running",
+      "message": "QA verification F-154"
+    },
+    {
+      "ts": "2026-08-22T06:35:46Z",
+      "agent": "documenter",
+      "stage": "document",
+      "state": "running",
+      "message": "Document F-154 API contract change"
+    },
+    {
+      "ts": "2026-08-22T06:35:46Z",
+      "agent": "leader",
+      "stage": "close",
+      "state": "done",
+      "message": "Close F-154"
+    }
+  ]
 }