diff --git a/TODO.md b/TODO.md
index c9f7e30..3319755 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1483,6 +1483,63 @@ systemd (fecha um risco documentado desde a PHASE 01)
       `PredictiveDialerEngine` já popula (PHASE 16) mas sem tela nenhuma
       pra visualizar/gerenciar ainda
 
+## PHASE 40 — Administração > Configurações (tenant) + últimos gaps de
+Usuários (agente.md secao 169)
+- [x] `GET/PATCH /tenant-settings`: self-service do próprio tenant — só
+      lê/escreve `user.tenantId` das claims, nunca aceita um tenantId
+      arbitrário no path/body, então não existe forma de um Tenant Admin
+      mexer em outro tenant por aqui (diferente de `TenantsController`,
+      que é platform-only). Editável: nome fantasia, CNPJ/CPF, fuso,
+      idioma, privacidade de IA. Somente leitura: razão social, código,
+      plano, status, moeda, domínio de telefonia (controlados pela
+      plataforma)
+- [x] Tela `/app/administracao/configuracoes` — formulário + bloco
+      read-only, mesmo padrão visual das outras telas de Administração
+- [x] `DELETE /users/:id` — remove só a membership+role do tenant (nunca
+      a conta `User`, que pode ter acesso a outros tenants). Duas
+      proteções novas (nenhuma existia antes): não deixa remover a si
+      mesmo, e não deixa remover/rebaixar o último Tenant Admin do tenant
+      (`isLastTenantAdmin`, aplicado também em `PATCH /users/:id/role`) —
+      sem isso um tenant podia ficar sem ninguém que pudesse gerenciar
+      usuários
+- [x] achado real: o primeiro `remove()` usava
+      `prisma.$transaction([...])` (forma array) pra apagar
+      `tenantMembership` — como essa tabela tem FORCE RLS (secao 32) e a
+      forma array não abre uma transação com `app.current_tenant_id`
+      setado, o Prisma devolvia P2025 ("not found") mesmo com a linha
+      existindo (500 pro cliente). Mesma classe de bug já corrigida antes
+      em `TenantsController.create`. Corrigido trocando pra
+      `$transaction(async (tx) => ...)` com `set_config` explícito antes
+      do delete — testado removendo de verdade um usuário de teste
+      (invite → demote self (2 admins) → remove → 204 → sumiu da lista)
+- [x] Testado ponta a ponta: GET/PATCH tenant-settings via curl e via UI
+      (nome fantasia editado, sidebar atualiza na hora), proteção de
+      último-admin confirmada nos dois endpoints (403 nos dois), convite +
+      remoção de um admin temporário confirmados
+
+## PHASE 41 — Discador > Callbacks (agente.md secao 78-79, 169)
+- [x] `GET /leads/callbacks` (tenant-wide, todas as campanhas) +
+      `PATCH /leads/callbacks/:id` com 3 ações: `RESCHEDULE` (nova data,
+      rejeitada se não for no futuro), `REQUEUE` (volta pra `READY`,
+      dialer pega de novo sem esperar), `CANCEL` (`DO_NOT_CALL`) — só
+      atua sobre leads que ainda estão em `CALLBACK` (RLS +
+      `withTenantContext`, mesmo padrão já auditado)
+- [x] Tela `/app/discador/callbacks` — lista com nome da campanha,
+      telefone, tentativas, "remarcado para" com date-time picker inline
+- [x] "Importações" removido do menu (nunca virou tela real, decisão já
+      registrada na PHASE 39: CSV em lote já existe no wizard e no
+      detalhe da campanha, uma tela separada só faria sentido com
+      histórico de import persistido, que não existe) — mesmo princípio
+      já usado em Monitoramento (secao 168-169): não deixar link pra
+      "em breve" quando a funcionalidade de verdade já está em outro
+      lugar
+- [x] Testado ponta a ponta: lead de teste forçado pra `CALLBACK` via SQL
+      direto (não existe fluxo de produto pra chegar nesse estado sem o
+      dialer rodando uma chamada real), reagendamento rejeitado pro
+      passado (400), aceito pro futuro (200), requeue confirmado (sai da
+      lista de callbacks, volta pra `READY`), lead de teste removido no
+      final
+
 ---
 
 ## Riscos conhecidos
diff --git a/apps/api/src/leads/callbacks.controller.ts b/apps/api/src/leads/callbacks.controller.ts
new file mode 100644
index 0000000..a16c4d8
--- /dev/null
+++ b/apps/api/src/leads/callbacks.controller.ts
@@ -0,0 +1,76 @@
+import { BadRequestException, Body, Controller, Get, NotFoundException, Param, Patch, UseGuards } from "@nestjs/common";
+import { getPrismaClient, withTenantContext } from "@b2bcall/database";
+import { recordAuditEvent, type AccessTokenClaims } from "@b2bcall/auth";
+import { JwtAuthGuard } from "../common/guards/jwt-auth.guard";
+import { PermissionGuard } from "../common/guards/permission.guard";
+import { RequirePermission } from "../common/decorators/require-permission.decorator";
+import { CurrentUser } from "../common/decorators/current-user.decorator";
+import { UpdateCallbackDto } from "./dto/update-callback.dto";
+
+/**
+ * "Discador > Callbacks" (agente.md secao 169) — visão tenant-wide (todas
+ * as campanhas) dos leads que o `PredictiveDialerEngine` marcou como
+ * `CALLBACK` (secao 78-79: agente pediu pra ligar de volta em outro
+ * horário). Antes desta tela não existia forma nenhuma de ver ou agir
+ * sobre esses leads — só ficavam esperando `nextAttemptAt` chegar, sem
+ * ninguém poder adiantar, adiar ou cancelar.
+ */
+@UseGuards(JwtAuthGuard, PermissionGuard)
+@Controller("leads/callbacks")
+export class CallbacksController {
+  @RequirePermission("campaigns.view")
+  @Get()
+  async list(@CurrentUser() user: AccessTokenClaims): Promise<Record<string, unknown>[]> {
+    const prisma = getPrismaClient();
+    const tenantId = user.tenantId!;
+
+    return withTenantContext(prisma, tenantId, (tx) =>
+      tx.lead.findMany({
+        where: { tenantId, status: "CALLBACK" },
+        include: { campaign: { select: { id: true, name: true } } },
+        orderBy: { nextAttemptAt: "asc" },
+        take: 500,
+      }),
+    );
+  }
+
+  @RequirePermission("campaigns.update")
+  @Patch(":id")
+  async update(
+    @CurrentUser() user: AccessTokenClaims,
+    @Param("id") id: string,
+    @Body() dto: UpdateCallbackDto,
+  ): Promise<Record<string, unknown>> {
+    const prisma = getPrismaClient();
+    const tenantId = user.tenantId!;
+
+    const lead = await withTenantContext(prisma, tenantId, (tx) =>
+      tx.lead.findFirst({ where: { id, tenantId, status: "CALLBACK" } }),
+    );
+    if (!lead) throw new NotFoundException("Callback nao encontrado (ou o lead ja saiu do status CALLBACK)");
+
+    if (dto.action === "RESCHEDULE" && new Date(dto.nextAttemptAt!).getTime() <= Date.now()) {
+      throw new BadRequestException("nextAttemptAt precisa ser no futuro");
+    }
+
+    const data =
+      dto.action === "RESCHEDULE"
+        ? { nextAttemptAt: new Date(dto.nextAttemptAt!) }
+        : dto.action === "REQUEUE"
+          ? { status: "READY" as const, nextAttemptAt: null }
+          : { status: "DO_NOT_CALL" as const, nextAttemptAt: null };
+
+    const updated = await withTenantContext(prisma, tenantId, (tx) => tx.lead.update({ where: { id }, data }));
+
+    await recordAuditEvent(prisma, {
+      action: "LEAD_CALLBACK_UPDATE",
+      tenantId,
+      userId: user.sub,
+      entityType: "lead",
+      entityId: id,
+      after: { action: dto.action, nextAttemptAt: dto.nextAttemptAt ?? null },
+    });
+
+    return updated;
+  }
+}
diff --git a/apps/api/src/leads/dto/update-callback.dto.ts b/apps/api/src/leads/dto/update-callback.dto.ts
new file mode 100644
index 0000000..237830a
--- /dev/null
+++ b/apps/api/src/leads/dto/update-callback.dto.ts
@@ -0,0 +1,12 @@
+import { IsIn, IsISO8601, ValidateIf } from "class-validator";
+
+const CALLBACK_ACTIONS = ["RESCHEDULE", "REQUEUE", "CANCEL"];
+
+export class UpdateCallbackDto {
+  @IsIn(CALLBACK_ACTIONS)
+  action!: "RESCHEDULE" | "REQUEUE" | "CANCEL";
+
+  @ValidateIf((dto) => dto.action === "RESCHEDULE")
+  @IsISO8601()
+  nextAttemptAt?: string;
+}
diff --git a/apps/api/src/leads/leads.module.ts b/apps/api/src/leads/leads.module.ts
index 076d53b..8203ddb 100644
--- a/apps/api/src/leads/leads.module.ts
+++ b/apps/api/src/leads/leads.module.ts
@@ -1,7 +1,8 @@
 import { Module } from "@nestjs/common";
 import { LeadsController } from "./leads.controller";
+import { CallbacksController } from "./callbacks.controller";
 
 @Module({
-  controllers: [LeadsController],
+  controllers: [LeadsController, CallbacksController],
 })
 export class LeadsModule {}
diff --git a/apps/api/src/tenants/dto/update-tenant-settings.dto.ts b/apps/api/src/tenants/dto/update-tenant-settings.dto.ts
new file mode 100644
index 0000000..1451c4f
--- /dev/null
+++ b/apps/api/src/tenants/dto/update-tenant-settings.dto.ts
@@ -0,0 +1,29 @@
+import { IsIn, IsOptional, IsString, MaxLength } from "class-validator";
+
+const AI_PRIVACY_LEVELS = ["AI_OFF", "TRANSCRIPTION_ONLY", "TRANSCRIPTION_AND_ANALYSIS"];
+
+export class UpdateTenantSettingsDto {
+  @IsOptional()
+  @IsString()
+  @MaxLength(200)
+  tradeName?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(40)
+  taxId?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(60)
+  timezone?: string;
+
+  @IsOptional()
+  @IsString()
+  @MaxLength(10)
+  locale?: string;
+
+  @IsOptional()
+  @IsIn(AI_PRIVACY_LEVELS)
+  aiPrivacyLevel?: string;
+}
diff --git a/apps/api/src/tenants/tenant-settings.controller.ts b/apps/api/src/tenants/tenant-settings.controller.ts
new file mode 100644
index 0000000..a992401
--- /dev/null
+++ b/apps/api/src/tenants/tenant-settings.controller.ts
@@ -0,0 +1,65 @@
+import { Body, Controller, Get, NotFoundException, Patch, UseGuards } from "@nestjs/common";
+import { getPrismaClient, type AIPrivacyLevel } from "@b2bcall/database";
+import { recordAuditEvent, type AccessTokenClaims } from "@b2bcall/auth";
+import { JwtAuthGuard } from "../common/guards/jwt-auth.guard";
+import { PermissionGuard } from "../common/guards/permission.guard";
+import { RequirePermission } from "../common/decorators/require-permission.decorator";
+import { CurrentUser } from "../common/decorators/current-user.decorator";
+import { UpdateTenantSettingsDto } from "./dto/update-tenant-settings.dto";
+
+/**
+ * "Administração > Configurações" (agente.md secao 169) — self-service do
+ * próprio tenant, diferente de `TenantsController` (que é platform-only e
+ * mexe em campos que só a plataforma controla: status, plano, code).
+ * Nunca recebe `:id` — sempre `user.tenantId` das claims, então não existe
+ * forma de um Tenant Admin editar outro tenant por aqui (a checagem
+ * `isPlatformUser` do `TenantsController` não se aplica porque este
+ * controller nem aceita um tenantId arbitrário).
+ */
+@UseGuards(JwtAuthGuard, PermissionGuard)
+@Controller("tenant-settings")
+export class TenantSettingsController {
+  @RequirePermission("users.manage")
+  @Get()
+  async get(@CurrentUser() user: AccessTokenClaims) {
+    const prisma = getPrismaClient();
+    const tenant = await prisma.tenant.findFirst({
+      where: { id: user.tenantId!, deletedAt: null },
+      include: { plan: { select: { key: true, name: true } } },
+    });
+    if (!tenant) throw new NotFoundException();
+    const { priceBookId: _priceBookId, rateDeckId: _rateDeckId, ...rest } = tenant;
+    return rest;
+  }
+
+  @RequirePermission("users.manage")
+  @Patch()
+  async update(@CurrentUser() user: AccessTokenClaims, @Body() dto: UpdateTenantSettingsDto) {
+    const prisma = getPrismaClient();
+    const tenantId = user.tenantId!;
+
+    const tenant = await prisma.tenant.update({
+      where: { id: tenantId },
+      data: {
+        ...(dto.tradeName !== undefined ? { tradeName: dto.tradeName } : {}),
+        ...(dto.taxId !== undefined ? { taxId: dto.taxId } : {}),
+        ...(dto.timezone !== undefined ? { timezone: dto.timezone } : {}),
+        ...(dto.locale !== undefined ? { locale: dto.locale } : {}),
+        ...(dto.aiPrivacyLevel !== undefined ? { aiPrivacyLevel: dto.aiPrivacyLevel as AIPrivacyLevel } : {}),
+      },
+      include: { plan: { select: { key: true, name: true } } },
+    });
+
+    await recordAuditEvent(prisma, {
+      action: "TENANT_SETTINGS_UPDATE",
+      tenantId,
+      userId: user.sub,
+      entityType: "tenant",
+      entityId: tenantId,
+      after: { ...dto },
+    });
+
+    const { priceBookId: _priceBookId, rateDeckId: _rateDeckId, ...rest } = tenant;
+    return rest;
+  }
+}
diff --git a/apps/api/src/tenants/tenants.module.ts b/apps/api/src/tenants/tenants.module.ts
index c479e79..36317ff 100644
--- a/apps/api/src/tenants/tenants.module.ts
+++ b/apps/api/src/tenants/tenants.module.ts
@@ -1,7 +1,8 @@
 import { Module } from "@nestjs/common";
 import { TenantsController } from "./tenants.controller";
+import { TenantSettingsController } from "./tenant-settings.controller";
 
 @Module({
-  controllers: [TenantsController],
+  controllers: [TenantsController, TenantSettingsController],
 })
 export class TenantsModule {}
diff --git a/apps/api/src/users/users.controller.ts b/apps/api/src/users/users.controller.ts
index 3f98820..4aa7375 100644
--- a/apps/api/src/users/users.controller.ts
+++ b/apps/api/src/users/users.controller.ts
@@ -1,4 +1,4 @@
-import { Body, ConflictException, Controller, ForbiddenException, Get, NotFoundException, Param, Patch, Post, UseGuards } from "@nestjs/common";
+import { Body, ConflictException, Controller, Delete, ForbiddenException, Get, HttpCode, HttpStatus, NotFoundException, Param, Patch, Post, UseGuards } from "@nestjs/common";
 import { getPrismaClient, withTenantContext } from "@b2bcall/database";
 import { recordAuditEvent, hashPassword, type AccessTokenClaims } from "@b2bcall/auth";
 import { generateStrongPassword } from "@b2bcall/shared";
@@ -15,6 +15,16 @@ import { InviteUserDto, UpdateUserRoleDto } from "./dto/invite-user.dto";
  * (Platform > Clientes > Tenants) ou via script — nenhuma forma de um
  * Tenant Admin adicionar um colega ao próprio tenant.
  */
+async function isLastTenantAdmin(tenantId: string, userId: string): Promise<boolean> {
+  const prisma = getPrismaClient();
+  const currentRole = await prisma.userRole.findFirst({ where: { userId, tenantId }, include: { role: true } });
+  if (currentRole?.role.key !== "tenant_admin") return false;
+  const otherAdmins = await prisma.userRole.count({
+    where: { tenantId, userId: { not: userId }, role: { key: "tenant_admin" } },
+  });
+  return otherAdmins === 0;
+}
+
 @UseGuards(JwtAuthGuard, PermissionGuard)
 @Controller("users")
 export class UsersController {
@@ -135,6 +145,10 @@ export class UsersController {
       throw new ForbiddenException("roleKey precisa ser uma role de escopo TENANT");
     }
 
+    if (role.key !== "tenant_admin" && (await isLastTenantAdmin(tenantId, id))) {
+      throw new ForbiddenException("Este e' o unico Tenant Admin do tenant — promova outra pessoa antes de trocar o papel dele(a)");
+    }
+
     // Simplificação deliberada: 1 role por usuário por tenant — trocar
     // substitui, não acumula (o schema permite várias, mas a UI não
     // oferece combinar papéis nesta primeira versão).
@@ -154,4 +168,50 @@ export class UsersController {
 
     return { id, role: { key: role.key, name: role.name } };
   }
+
+  /** Remove só a membership+role deste tenant (secao 169) — nunca a conta
+   * `User` em si, que pode pertencer a outros tenants. Bloqueia remover a
+   * si mesmo (evita um Tenant Admin se trancar fora sem querer) e remover
+   * o último Tenant Admin (o tenant ficaria sem ninguém que possa
+   * convidar/gerenciar gente). */
+  @RequirePermission("users.manage")
+  @Delete(":id")
+  @HttpCode(HttpStatus.NO_CONTENT)
+  async remove(@CurrentUser() user: AccessTokenClaims, @Param("id") id: string) {
+    const prisma = getPrismaClient();
+    const tenantId = user.tenantId!;
+
+    if (id === user.sub) {
+      throw new ForbiddenException("Você não pode remover a si mesmo deste tenant");
+    }
+
+    const membership = await withTenantContext(prisma, tenantId, (tx) =>
+      tx.tenantMembership.findUnique({ where: { tenantId_userId: { tenantId, userId: id } } }),
+    );
+    if (!membership) throw new NotFoundException("Usuário não pertence a este tenant");
+
+    if (await isLastTenantAdmin(tenantId, id)) {
+      throw new ForbiddenException("Este e' o unico Tenant Admin do tenant — promova outra pessoa antes de remove-lo(a)");
+    }
+
+    // `tenant_memberships` tem FORCE RLS (secao 32) — precisa de
+    // `app.current_tenant_id` setado na mesma transação, senão o delete
+    // não enxerga a linha e Prisma devolve P2025 ("not found") mesmo com
+    // a linha existindo (mesma classe de bug já corrigida em
+    // TenantsController.create). `user_roles` não tem RLS, então o
+    // deleteMany funciona em qualquer contexto.
+    await prisma.$transaction(async (tx) => {
+      await tx.$executeRaw`SELECT set_config('app.current_tenant_id', ${tenantId}, true)`;
+      await tx.userRole.deleteMany({ where: { userId: id, tenantId } });
+      await tx.tenantMembership.delete({ where: { tenantId_userId: { tenantId, userId: id } } });
+    });
+
+    await recordAuditEvent(prisma, {
+      action: "USER_REMOVED_FROM_TENANT",
+      tenantId,
+      userId: user.sub,
+      entityType: "user",
+      entityId: id,
+    });
+  }
 }
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diff --git a/apps/frontend/.impeccable/review/usuarios-remove-btn-desktop.png b/apps/frontend/.impeccable/review/usuarios-remove-btn-desktop.png
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diff --git a/apps/frontend/src/app/app/administracao/configuracoes/actions.ts b/apps/frontend/src/app/app/administracao/configuracoes/actions.ts
new file mode 100644
index 0000000..86bbf6f
--- /dev/null
+++ b/apps/frontend/src/app/app/administracao/configuracoes/actions.ts
@@ -0,0 +1,44 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requireSession } from "@/lib/session";
+import { apiFetch, ApiError } from "@/lib/api";
+import type { TenantSettings } from "@/lib/admin-types";
+
+function extractErrorMessage(err: unknown): string {
+  if (err instanceof ApiError) {
+    try {
+      const parsed = JSON.parse(err.message);
+      if (Array.isArray(parsed.message)) return parsed.message.join(" ");
+      if (typeof parsed.message === "string") return parsed.message;
+    } catch {
+      // corpo não era JSON
+    }
+    return err.message || "Falha inesperada na API.";
+  }
+  return "Falha inesperada. Tente novamente.";
+}
+
+export interface UpdateTenantSettingsInput {
+  tradeName: string;
+  taxId: string;
+  timezone: string;
+  locale: string;
+  aiPrivacyLevel: string;
+}
+
+export async function updateTenantSettings(
+  input: UpdateTenantSettingsInput,
+): Promise<{ ok: true; settings: TenantSettings } | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    const settings = await apiFetch<TenantSettings>("/tenant-settings", session.accessToken, {
+      method: "PATCH",
+      body: JSON.stringify(input),
+    });
+    revalidatePath("/app/administracao/configuracoes");
+    return { ok: true, settings };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
diff --git a/apps/frontend/src/app/app/administracao/configuracoes/configuracoes-view.tsx b/apps/frontend/src/app/app/administracao/configuracoes/configuracoes-view.tsx
new file mode 100644
index 0000000..3a88506
--- /dev/null
+++ b/apps/frontend/src/app/app/administracao/configuracoes/configuracoes-view.tsx
@@ -0,0 +1,134 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { useRouter } from "next/navigation";
+import { Check } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Input, Select, FieldLabel } from "@/components/ui/input";
+import { Pill } from "@/components/ui/pill";
+import { AI_PRIVACY_LEVEL_LABELS, type TenantSettings } from "@/lib/admin-types";
+
+type AiPrivacyLevel = TenantSettings["aiPrivacyLevel"];
+import { TENANT_STATUS_LABELS } from "@/lib/platform-types";
+import { formatDate } from "@/lib/format";
+import { updateTenantSettings } from "./actions";
+
+export function ConfiguracoesView({ settings }: { settings: TenantSettings }) {
+  const router = useRouter();
+  const [tradeName, setTradeName] = useState(settings.tradeName ?? "");
+  const [taxId, setTaxId] = useState(settings.taxId ?? "");
+  const [timezone, setTimezone] = useState(settings.timezone);
+  const [locale, setLocale] = useState(settings.locale);
+  const [aiPrivacyLevel, setAiPrivacyLevel] = useState(settings.aiPrivacyLevel);
+  const [error, setError] = useState<string | null>(null);
+  const [saved, setSaved] = useState(false);
+  const [pending, startTransition] = useTransition();
+
+  function onSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    setError(null);
+    setSaved(false);
+    startTransition(async () => {
+      const result = await updateTenantSettings({ tradeName: tradeName.trim(), taxId: taxId.trim(), timezone, locale, aiPrivacyLevel });
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setSaved(true);
+      router.refresh();
+    });
+  }
+
+  return (
+    <div className="space-y-5">
+      <div>
+        <h1 className="text-lg font-semibold text-foreground">Configurações</h1>
+        <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
+          Dados do próprio tenant (agente.md secao 169). Razão social, código, plano e status são controlados pela
+          plataforma — fale com o suporte pra mudar algum desses.
+        </p>
+      </div>
+
+      <Panel className="p-5">
+        <PanelHeader title="Identificação" description="Somente leitura — controlado pela plataforma" />
+        <div className="mt-4 grid grid-cols-1 gap-4 sm:grid-cols-3">
+          <ReadOnlyField label="Razão social" value={settings.legalName} />
+          <ReadOnlyField label="Código" value={settings.code} mono />
+          <div>
+            <FieldLabel>Status</FieldLabel>
+            <div className="pt-1.5">
+              <Pill tone={settings.status === "ACTIVE" ? "accent" : "neutral"}>{TENANT_STATUS_LABELS[settings.status]}</Pill>
+            </div>
+          </div>
+          <ReadOnlyField label="Plano" value={settings.plan.name} />
+          <ReadOnlyField label="Moeda de faturamento" value={settings.billingCurrency} />
+          <ReadOnlyField label="Domínio de telefonia" value={settings.telephonyDomain ?? "—"} mono />
+          <ReadOnlyField label="Cliente desde" value={formatDate(settings.createdAt)} />
+        </div>
+      </Panel>
+
+      <Panel className="p-5">
+        <form onSubmit={onSubmit} className="space-y-4">
+          <PanelHeader title="Editável" description="Só um Tenant Admin pode alterar" />
+          <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
+            <div>
+              <FieldLabel htmlFor="cf-tradename">Nome fantasia</FieldLabel>
+              <Input id="cf-tradename" value={tradeName} onChange={(e) => setTradeName(e.target.value)} disabled={pending} />
+            </div>
+            <div>
+              <FieldLabel htmlFor="cf-taxid">CNPJ/CPF</FieldLabel>
+              <Input id="cf-taxid" value={taxId} onChange={(e) => setTaxId(e.target.value)} disabled={pending} className="font-mono" />
+            </div>
+            <div>
+              <FieldLabel htmlFor="cf-timezone">Fuso horário</FieldLabel>
+              <Input id="cf-timezone" value={timezone} onChange={(e) => setTimezone(e.target.value)} disabled={pending} className="font-mono" />
+            </div>
+            <div>
+              <FieldLabel htmlFor="cf-locale">Idioma</FieldLabel>
+              <Input id="cf-locale" value={locale} onChange={(e) => setLocale(e.target.value)} disabled={pending} className="font-mono" />
+            </div>
+            <div className="sm:col-span-2">
+              <FieldLabel htmlFor="cf-ai">Privacidade de IA</FieldLabel>
+              <Select id="cf-ai" value={aiPrivacyLevel} onChange={(e) => setAiPrivacyLevel(e.target.value as AiPrivacyLevel)} disabled={pending}>
+                {Object.entries(AI_PRIVACY_LEVEL_LABELS).map(([key, label]) => (
+                  <option key={key} value={key}>
+                    {label}
+                  </option>
+                ))}
+              </Select>
+              <p className="mt-1.5 text-xs text-muted-foreground">
+                Nível padrão deste tenant — campanha e fila podem sobrescrever com um nível mais restrito, nunca mais
+                permissivo.
+              </p>
+            </div>
+          </div>
+          {error && (
+            <p role="alert" className="rounded-md border border-destructive/30 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+              {error}
+            </p>
+          )}
+          <div className="flex items-center justify-end gap-3">
+            {saved && !pending && (
+              <span className="flex items-center gap-1.5 text-sm text-status-green">
+                <Check className="h-4 w-4" aria-hidden /> Salvo
+              </span>
+            )}
+            <Button type="submit" disabled={pending}>
+              {pending ? "Salvando…" : "Salvar alterações"}
+            </Button>
+          </div>
+        </form>
+      </Panel>
+    </div>
+  );
+}
+
+function ReadOnlyField({ label, value, mono }: { label: string; value: string; mono?: boolean }) {
+  return (
+    <div>
+      <FieldLabel>{label}</FieldLabel>
+      <p className={`pt-1.5 text-sm text-foreground ${mono ? "font-mono" : ""}`}>{value}</p>
+    </div>
+  );
+}
diff --git a/apps/frontend/src/app/app/administracao/configuracoes/page.tsx b/apps/frontend/src/app/app/administracao/configuracoes/page.tsx
new file mode 100644
index 0000000..901e7c5
--- /dev/null
+++ b/apps/frontend/src/app/app/administracao/configuracoes/page.tsx
@@ -0,0 +1,10 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { TenantSettings } from "@/lib/admin-types";
+import { ConfiguracoesView } from "./configuracoes-view";
+
+export default async function ConfiguracoesPage() {
+  const session = await requireSession();
+  const settings = await apiFetch<TenantSettings>("/tenant-settings", session.accessToken);
+  return <ConfiguracoesView settings={settings} />;
+}
diff --git a/apps/frontend/src/app/app/administracao/usuarios/actions.ts b/apps/frontend/src/app/app/administracao/usuarios/actions.ts
index 4e73269..bb65fcc 100644
--- a/apps/frontend/src/app/app/administracao/usuarios/actions.ts
+++ b/apps/frontend/src/app/app/administracao/usuarios/actions.ts
@@ -50,3 +50,14 @@ export async function updateUserRole(id: string, roleKey: string): Promise<{ ok:
     return { ok: false, error: extractErrorMessage(err) };
   }
 }
+
+export async function removeUser(id: string): Promise<{ ok: true } | { ok: false; error: string }> {
+  const session = await requireSession();
+  try {
+    await apiFetch<void>(`/users/${id}`, session.accessToken, { method: "DELETE" });
+    revalidatePath("/app/administracao/usuarios");
+    return { ok: true };
+  } catch (err) {
+    return { ok: false, error: extractErrorMessage(err) };
+  }
+}
diff --git a/apps/frontend/src/app/app/administracao/usuarios/usuarios-view.tsx b/apps/frontend/src/app/app/administracao/usuarios/usuarios-view.tsx
index 4abf572..3d6aa3b 100644
--- a/apps/frontend/src/app/app/administracao/usuarios/usuarios-view.tsx
+++ b/apps/frontend/src/app/app/administracao/usuarios/usuarios-view.tsx
@@ -2,7 +2,7 @@
 
 import { useState, useTransition } from "react";
 import { useRouter } from "next/navigation";
-import { Check, Plus, User as UserIcon, X } from "lucide-react";
+import { Check, Plus, Trash2, User as UserIcon, X } from "lucide-react";
 import { Panel, PanelHeader } from "@/components/ui/panel";
 import { Button } from "@/components/ui/button";
 import { Input, Select, FieldLabel } from "@/components/ui/input";
@@ -10,7 +10,7 @@ import { Pill } from "@/components/ui/pill";
 import { SecretReveal } from "@/components/ui/secret-reveal";
 import { TBody, TD, TH, THead, TR, Table } from "@/components/ui/table";
 import { TENANT_ROLE_OPTIONS, type TenantMember } from "@/lib/admin-types";
-import { inviteUser, updateUserRole } from "./actions";
+import { inviteUser, removeUser, updateUserRole } from "./actions";
 
 export function UsuariosView({ members, currentUserId }: { members: TenantMember[]; currentUserId: string }) {
   const [showForm, setShowForm] = useState(false);
@@ -152,6 +152,7 @@ function MemberRow({ member, isSelf }: { member: TenantMember; isSelf: boolean }
   const [editing, setEditing] = useState(false);
   const [roleKey, setRoleKey] = useState(member.role?.key ?? TENANT_ROLE_OPTIONS[2].key);
   const [error, setError] = useState<string | null>(null);
+  const [confirmingRemove, setConfirmingRemove] = useState(false);
   const [pending, startTransition] = useTransition();
 
   function onSave() {
@@ -167,6 +168,23 @@ function MemberRow({ member, isSelf }: { member: TenantMember; isSelf: boolean }
     });
   }
 
+  function onRemove() {
+    if (!confirmingRemove) {
+      setConfirmingRemove(true);
+      return;
+    }
+    setError(null);
+    startTransition(async () => {
+      const result = await removeUser(member.id);
+      if (!result.ok) {
+        setError(result.error);
+        setConfirmingRemove(false);
+        return;
+      }
+      router.refresh();
+    });
+  }
+
   return (
     <TR>
       <TD>
@@ -201,10 +219,24 @@ function MemberRow({ member, isSelf }: { member: TenantMember; isSelf: boolean }
           <div className="flex items-center gap-2">
             <Pill>{member.role?.name ?? "sem papel"}</Pill>
             {!isSelf && (
-              <Button type="button" variant="ghost" size="sm" onClick={() => setEditing(true)}>
-                Trocar
-              </Button>
+              <>
+                <Button type="button" variant="ghost" size="sm" onClick={() => setEditing(true)} disabled={pending}>
+                  Trocar
+                </Button>
+                <Button
+                  type="button"
+                  variant={confirmingRemove ? "destructive" : "ghost"}
+                  size="sm"
+                  onClick={onRemove}
+                  disabled={pending}
+                  aria-label={confirmingRemove ? `Confirmar remoção de ${member.name}` : `Remover ${member.name} do tenant`}
+                >
+                  <Trash2 className="h-3.5 w-3.5" aria-hidden />
+                  {confirmingRemove ? "Confirmar" : ""}
+                </Button>
+              </>
             )}
+            {error && <span className="text-xs text-destructive">{error}</span>}
           </div>
         )}
       </TD>
diff --git a/apps/frontend/src/app/app/discador/callbacks/actions.ts b/apps/frontend/src/app/app/discador/callbacks/actions.ts
new file mode 100644
index 0000000..1b97b41
--- /dev/null
+++ b/apps/frontend/src/app/app/discador/callbacks/actions.ts
@@ -0,0 +1,42 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { requireSession } from "@/lib/session";
+import { apiFetch, ApiError } from "@/lib/api";
+
+function extractErrorMessage(err: unknown): string {
+  if (err instanceof ApiError) {
+    try {
+      const parsed = JSON.parse(err.message);
+      if (Array.isArray(parsed.message)) return parsed.message.join(" ");
+      if (typeof parsed.message === "string") return parsed.message;
+    } catch {
+      // corpo não era JSON
+    }
+    return err.message || "Falha inesperada na API.";
+  }
+  return "Falha inesperada. Tente novamente.";
+}
+
+async function updateCallback(id: string, body: { action: "RESCHEDULE" | "REQUEUE" | "CANCEL"; nextAttemptAt?: string }) {
+  const session = await requireSession();
+  try {
+    await apiFetch<void>(`/leads/callbacks/${id}`, session.accessToken, { method: "PATCH", body: JSON.stringify(body) });
+    revalidatePath("/app/discador/callbacks");
+    return { ok: true as const };
+  } catch (err) {
+    return { ok: false as const, error: extractErrorMessage(err) };
+  }
+}
+
+export async function rescheduleCallback(id: string, nextAttemptAt: string) {
+  return updateCallback(id, { action: "RESCHEDULE", nextAttemptAt });
+}
+
+export async function requeueCallback(id: string) {
+  return updateCallback(id, { action: "REQUEUE" });
+}
+
+export async function cancelCallback(id: string) {
+  return updateCallback(id, { action: "CANCEL" });
+}
diff --git a/apps/frontend/src/app/app/discador/callbacks/callbacks-view.tsx b/apps/frontend/src/app/app/discador/callbacks/callbacks-view.tsx
new file mode 100644
index 0000000..b0d685c
--- /dev/null
+++ b/apps/frontend/src/app/app/discador/callbacks/callbacks-view.tsx
@@ -0,0 +1,170 @@
+"use client";
+
+import { useState, useTransition } from "react";
+import { useRouter } from "next/navigation";
+import { CalendarClock, PhoneForwarded, Trash2 } from "lucide-react";
+import { Panel, PanelHeader } from "@/components/ui/panel";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Pill } from "@/components/ui/pill";
+import { EmptyState, TBody, TD, TH, THead, TR, Table } from "@/components/ui/table";
+import { formatDateTime } from "@/lib/format";
+import type { CallbackLead } from "@/lib/campaign-types";
+import { cancelCallback, rescheduleCallback, requeueCallback } from "./actions";
+
+export function CallbacksView({ callbacks }: { callbacks: CallbackLead[] }) {
+  return (
+    <div className="space-y-5">
+      <div>
+        <h1 className="text-lg font-semibold text-foreground">Callbacks</h1>
+        <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
+          Leads que pediram pra ser chamados de volta em outro horário (agente.md secao 78-79, todas as campanhas
+          deste tenant). O discador preditivo respeita "Remarcado para" sozinho — não precisa fazer nada aqui a
+          menos que queira adiantar, adiar ou desistir de um contato.
+        </p>
+      </div>
+
+      <Panel>
+        <PanelHeader title="Callbacks pendentes" description={`${callbacks.length} lead(s) aguardando retorno`} />
+        {callbacks.length === 0 ? (
+          <EmptyState
+            title="Nenhum callback pendente"
+            description="Quando um agente marcar um lead pra ligar de volta depois, ele aparece aqui."
+          />
+        ) : (
+          <Table>
+            <THead>
+              <TR>
+                <TH>Campanha</TH>
+                <TH>Nome</TH>
+                <TH>Telefone</TH>
+                <TH>Tentativas</TH>
+                <TH>Remarcado para</TH>
+                <TH>
+                  <span className="sr-only">Ações</span>
+                </TH>
+              </TR>
+            </THead>
+            <TBody>
+              {callbacks.map((lead) => (
+                <CallbackRow key={lead.id} lead={lead} />
+              ))}
+            </TBody>
+          </Table>
+        )}
+      </Panel>
+    </div>
+  );
+}
+
+function toLocalInputValue(iso: string | null): string {
+  if (!iso) return "";
+  const d = new Date(iso);
+  const pad = (n: number) => String(n).padStart(2, "0");
+  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}T${pad(d.getHours())}:${pad(d.getMinutes())}`;
+}
+
+function CallbackRow({ lead }: { lead: CallbackLead }) {
+  const router = useRouter();
+  const [rescheduling, setRescheduling] = useState(false);
+  const [when, setWhen] = useState(toLocalInputValue(lead.nextAttemptAt));
+  const [confirmingCancel, setConfirmingCancel] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [pending, startTransition] = useTransition();
+
+  function onReschedule() {
+    if (!rescheduling) {
+      setRescheduling(true);
+      return;
+    }
+    setError(null);
+    if (!when) {
+      setError("Escolha uma data/hora.");
+      return;
+    }
+    startTransition(async () => {
+      const result = await rescheduleCallback(lead.id, new Date(when).toISOString());
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      setRescheduling(false);
+      router.refresh();
+    });
+  }
+
+  function onRequeue() {
+    setError(null);
+    startTransition(async () => {
+      const result = await requeueCallback(lead.id);
+      if (!result.ok) {
+        setError(result.error);
+        return;
+      }
+      router.refresh();
+    });
+  }
+
+  function onCancel() {
+    if (!confirmingCancel) {
+      setConfirmingCancel(true);
+      return;
+    }
+    setError(null);
+    startTransition(async () => {
+      const result = await cancelCallback(lead.id);
+      if (!result.ok) {
+        setError(result.error);
+        setConfirmingCancel(false);
+        return;
+      }
+      router.refresh();
+    });
+  }
+
+  return (
+    <TR>
+      <TD>
+        <Pill>{lead.campaign.name}</Pill>
+      </TD>
+      <TD className="text-foreground">{lead.name ?? "—"}</TD>
+      <TD className="font-mono text-muted-foreground">{lead.phoneNormalized}</TD>
+      <TD className="font-mono tabular-nums text-muted-foreground">{lead.attemptCount}</TD>
+      <TD>
+        {rescheduling ? (
+          <Input type="datetime-local" value={when} onChange={(e) => setWhen(e.target.value)} disabled={pending} className="h-8 w-52" />
+        ) : (
+          <span className="text-muted-foreground">{lead.nextAttemptAt ? formatDateTime(lead.nextAttemptAt) : "—"}</span>
+        )}
+      </TD>
+      <TD>
+        <div className="flex items-center justify-end gap-2">
+          {error && <span className="text-xs text-destructive">{error}</span>}
+          <Button type="button" variant="ghost" size="sm" onClick={onReschedule} disabled={pending}>
+            <CalendarClock className="h-3.5 w-3.5" aria-hidden />
+            {rescheduling ? "Confirmar" : "Remarcar"}
+          </Button>
+          {!rescheduling && (
+            <Button type="button" variant="ghost" size="sm" onClick={onRequeue} disabled={pending} title="Tentar de novo agora, sem esperar a data">
+              <PhoneForwarded className="h-3.5 w-3.5" aria-hidden />
+              Tentar agora
+            </Button>
+          )}
+          {!rescheduling && (
+            <Button
+              type="button"
+              variant={confirmingCancel ? "destructive" : "ghost"}
+              size="sm"
+              onClick={onCancel}
+              disabled={pending}
+              aria-label={confirmingCancel ? `Confirmar cancelamento do callback de ${lead.phoneNormalized}` : `Cancelar callback de ${lead.phoneNormalized}`}
+            >
+              <Trash2 className="h-3.5 w-3.5" aria-hidden />
+              {confirmingCancel ? "Confirmar" : ""}
+            </Button>
+          )}
+        </div>
+      </TD>
+    </TR>
+  );
+}
diff --git a/apps/frontend/src/app/app/discador/callbacks/page.tsx b/apps/frontend/src/app/app/discador/callbacks/page.tsx
new file mode 100644
index 0000000..291a88d
--- /dev/null
+++ b/apps/frontend/src/app/app/discador/callbacks/page.tsx
@@ -0,0 +1,10 @@
+import { requireSession } from "@/lib/session";
+import { apiFetch } from "@/lib/api";
+import type { CallbackLead } from "@/lib/campaign-types";
+import { CallbacksView } from "./callbacks-view";
+
+export default async function CallbacksPage() {
+  const session = await requireSession();
+  const callbacks = await apiFetch<CallbackLead[]>("/leads/callbacks", session.accessToken);
+  return <CallbacksView callbacks={callbacks} />;
+}
diff --git a/apps/frontend/src/components/tenant-shell/nav-data.ts b/apps/frontend/src/components/tenant-shell/nav-data.ts
index 92723ef..ff02904 100644
--- a/apps/frontend/src/components/tenant-shell/nav-data.ts
+++ b/apps/frontend/src/components/tenant-shell/nav-data.ts
@@ -42,8 +42,11 @@ export const TENANT_NAV: NavSection[] = [
         href: "/app/discador/leads",
         description: "Leads de uma campanha — buscar, adicionar, remover",
       },
-      { label: "Importações" },
-      { label: "Callbacks" },
+      {
+        label: "Callbacks",
+        href: "/app/discador/callbacks",
+        description: "Leads que pediram retorno em outro horário — remarcar, tentar agora ou cancelar",
+      },
       {
         label: "Lista de Bloqueio",
         href: "/app/discador/bloqueio",
@@ -177,7 +180,11 @@ export const TENANT_NAV: NavSection[] = [
         href: "/app/administracao/perfis",
         description: "O que cada papel pode fazer neste tenant",
       },
-      { label: "Configurações" },
+      {
+        label: "Configurações",
+        href: "/app/administracao/configuracoes",
+        description: "Dados do tenant — nome fantasia, fuso, idioma, privacidade de IA",
+      },
     ],
   },
 ];
diff --git a/apps/frontend/src/lib/admin-types.ts b/apps/frontend/src/lib/admin-types.ts
index 1282b12..3cf1ab6 100644
--- a/apps/frontend/src/lib/admin-types.ts
+++ b/apps/frontend/src/lib/admin-types.ts
@@ -16,3 +16,25 @@ export const TENANT_ROLE_OPTIONS: { key: string; name: string }[] = [
   { key: "supervisor", name: "Supervisor" },
   { key: "agent", name: "Agente" },
 ];
+
+export interface TenantSettings {
+  id: string;
+  code: string;
+  legalName: string;
+  tradeName: string | null;
+  taxId: string | null;
+  status: "TRIAL" | "ACTIVE" | "SUSPENDED" | "PAST_DUE" | "CANCELLED";
+  timezone: string;
+  locale: string;
+  billingCurrency: string;
+  telephonyDomain: string | null;
+  aiPrivacyLevel: "AI_OFF" | "TRANSCRIPTION_ONLY" | "TRANSCRIPTION_AND_ANALYSIS";
+  plan: { key: string; name: string };
+  createdAt: string;
+}
+
+export const AI_PRIVACY_LEVEL_LABELS: Record<string, string> = {
+  AI_OFF: "Desligada — nenhum áudio/transcrição sai deste tenant",
+  TRANSCRIPTION_ONLY: "Só transcrição — sem análise por IA",
+  TRANSCRIPTION_AND_ANALYSIS: "Transcrição e análise por IA",
+};
diff --git a/apps/frontend/src/lib/campaign-types.ts b/apps/frontend/src/lib/campaign-types.ts
index ddfb63b..a062d28 100644
--- a/apps/frontend/src/lib/campaign-types.ts
+++ b/apps/frontend/src/lib/campaign-types.ts
@@ -88,6 +88,10 @@ export interface Lead {
   createdAt: string;
 }
 
+export interface CallbackLead extends Lead {
+  campaign: { id: string; name: string };
+}
+
 export const LEAD_STATUS_LABELS: Record<string, string> = {
   NEW: "Novo",
   READY: "Pronto",