diff --git a/apps/api/src/products/dto/create-brand.dto.ts b/apps/api/src/products/dto/create-brand.dto.ts
new file mode 100644
index 0000000..4085252
--- /dev/null
+++ b/apps/api/src/products/dto/create-brand.dto.ts
@@ -0,0 +1,9 @@
+import { IsBoolean, IsOptional, MinLength, IsString } from "class-validator";
+
+export class CreateBrandDto {
+  @IsString()
+  @MinLength(1)
+  name!: string;
+
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/create-product-group.dto.ts b/apps/api/src/products/dto/create-product-group.dto.ts
new file mode 100644
index 0000000..2a07b40
--- /dev/null
+++ b/apps/api/src/products/dto/create-product-group.dto.ts
@@ -0,0 +1,9 @@
+import { IsBoolean, IsOptional, MinLength, IsString } from "class-validator";
+
+export class CreateProductGroupDto {
+  @IsString()
+  @MinLength(1)
+  name!: string;
+
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/create-product-subgroup.dto.ts b/apps/api/src/products/dto/create-product-subgroup.dto.ts
new file mode 100644
index 0000000..5c4b34b
--- /dev/null
+++ b/apps/api/src/products/dto/create-product-subgroup.dto.ts
@@ -0,0 +1,12 @@
+import { IsBoolean, IsOptional, IsUUID, MinLength, IsString } from "class-validator";
+
+export class CreateProductSubgroupDto {
+  @IsString()
+  @MinLength(1)
+  name!: string;
+
+  @IsUUID()
+  groupId!: string;
+
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/create-product-type.dto.ts b/apps/api/src/products/dto/create-product-type.dto.ts
new file mode 100644
index 0000000..aa94a79
--- /dev/null
+++ b/apps/api/src/products/dto/create-product-type.dto.ts
@@ -0,0 +1,9 @@
+import { IsBoolean, IsOptional, MinLength, IsString } from "class-validator";
+
+export class CreateProductTypeDto {
+  @IsString()
+  @MinLength(1)
+  name!: string;
+
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/create-product.dto.ts b/apps/api/src/products/dto/create-product.dto.ts
index a450744..89d8aa9 100644
--- a/apps/api/src/products/dto/create-product.dto.ts
+++ b/apps/api/src/products/dto/create-product.dto.ts
@@ -1,4 +1,4 @@
-import { IsBoolean, IsIn, IsNumber, IsOptional, IsString, Min, MinLength, ValidateNested } from "class-validator";
+import { IsBoolean, IsIn, IsNumber, IsOptional, IsString, IsUUID, Min, MinLength, ValidateNested } from "class-validator";
 import { Type } from "class-transformer";
 import { SERVICE_TYPES, type ServiceType } from "@eden/domain-shared";
 import { TariffRatesDto } from "./tariff-rate.dto.js";
@@ -10,14 +10,19 @@ export class CreateProductDto {
 
   @IsOptional() @IsString() description?: string;
 
-  @IsString()
-  @MinLength(1)
-  productType!: string;
+  @IsUUID()
+  productTypeId!: string;
 
-  @IsOptional() @IsString() productGroup?: string;
-  @IsOptional() @IsString() productSubgroup?: string;
-  @IsOptional() @IsString() brand?: string;
-  @IsOptional() @IsString() unit?: string;
+  @IsOptional() @IsUUID() productGroupId?: string;
+  // `null` is only meaningful on update (PATCH) — an explicit "remove the
+  // subgroup" instruction, distinct from omitting the field ("leave
+  // unchanged"). On create it's equivalent to omitting it. See
+  // ProductsService.assertSubgroupConsistent.
+  @IsOptional() @IsUUID() productSubgroupId?: string | null;
+  @IsOptional() @IsUUID() brandId?: string;
+
+  @IsUUID()
+  unitId!: string;
 
   @IsOptional() @IsBoolean() active?: boolean;
   @IsOptional() @IsBoolean() discontinued?: boolean;
diff --git a/apps/api/src/products/dto/create-unit.dto.ts b/apps/api/src/products/dto/create-unit.dto.ts
new file mode 100644
index 0000000..b7cfec7
--- /dev/null
+++ b/apps/api/src/products/dto/create-unit.dto.ts
@@ -0,0 +1,9 @@
+import { IsBoolean, IsOptional, MinLength, IsString } from "class-validator";
+
+export class CreateUnitDto {
+  @IsString()
+  @MinLength(1)
+  name!: string;
+
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/update-brand.dto.ts b/apps/api/src/products/dto/update-brand.dto.ts
new file mode 100644
index 0000000..d19e3e7
--- /dev/null
+++ b/apps/api/src/products/dto/update-brand.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from "@nestjs/swagger";
+import { CreateBrandDto } from "./create-brand.dto.js";
+
+export class UpdateBrandDto extends PartialType(CreateBrandDto) {}
diff --git a/apps/api/src/products/dto/update-product-group.dto.ts b/apps/api/src/products/dto/update-product-group.dto.ts
new file mode 100644
index 0000000..7054c70
--- /dev/null
+++ b/apps/api/src/products/dto/update-product-group.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from "@nestjs/swagger";
+import { CreateProductGroupDto } from "./create-product-group.dto.js";
+
+export class UpdateProductGroupDto extends PartialType(CreateProductGroupDto) {}
diff --git a/apps/api/src/products/dto/update-product-subgroup.dto.ts b/apps/api/src/products/dto/update-product-subgroup.dto.ts
new file mode 100644
index 0000000..679ffa0
--- /dev/null
+++ b/apps/api/src/products/dto/update-product-subgroup.dto.ts
@@ -0,0 +1,7 @@
+import { IsBoolean, IsOptional, MinLength, IsString } from "class-validator";
+
+/** groupId is deliberately not patchable here — moving a subgroup to a different group is not part of this MVP; create a new subgroup under the target group instead. */
+export class UpdateProductSubgroupDto {
+  @IsOptional() @IsString() @MinLength(1) name?: string;
+  @IsOptional() @IsBoolean() active?: boolean;
+}
diff --git a/apps/api/src/products/dto/update-product-type.dto.ts b/apps/api/src/products/dto/update-product-type.dto.ts
new file mode 100644
index 0000000..fd91413
--- /dev/null
+++ b/apps/api/src/products/dto/update-product-type.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from "@nestjs/swagger";
+import { CreateProductTypeDto } from "./create-product-type.dto.js";
+
+export class UpdateProductTypeDto extends PartialType(CreateProductTypeDto) {}
diff --git a/apps/api/src/products/dto/update-unit.dto.ts b/apps/api/src/products/dto/update-unit.dto.ts
new file mode 100644
index 0000000..04738f3
--- /dev/null
+++ b/apps/api/src/products/dto/update-unit.dto.ts
@@ -0,0 +1,4 @@
+import { PartialType } from "@nestjs/swagger";
+import { CreateUnitDto } from "./create-unit.dto.js";
+
+export class UpdateUnitDto extends PartialType(CreateUnitDto) {}
diff --git a/apps/api/src/products/products.controller.ts b/apps/api/src/products/products.controller.ts
index 3f27bd5..3f0b35c 100644
--- a/apps/api/src/products/products.controller.ts
+++ b/apps/api/src/products/products.controller.ts
@@ -3,6 +3,16 @@ import { ApiBearerAuth, ApiTags } from "@nestjs/swagger";
 import { ProductsService } from "./products.service.js";
 import { CreateProductDto } from "./dto/create-product.dto.js";
 import { UpdateProductDto } from "./dto/update-product.dto.js";
+import { CreateProductTypeDto } from "./dto/create-product-type.dto.js";
+import { UpdateProductTypeDto } from "./dto/update-product-type.dto.js";
+import { CreateProductGroupDto } from "./dto/create-product-group.dto.js";
+import { UpdateProductGroupDto } from "./dto/update-product-group.dto.js";
+import { CreateProductSubgroupDto } from "./dto/create-product-subgroup.dto.js";
+import { UpdateProductSubgroupDto } from "./dto/update-product-subgroup.dto.js";
+import { CreateBrandDto } from "./dto/create-brand.dto.js";
+import { UpdateBrandDto } from "./dto/update-brand.dto.js";
+import { CreateUnitDto } from "./dto/create-unit.dto.js";
+import { UpdateUnitDto } from "./dto/update-unit.dto.js";
 import { JwtAuthGuard } from "../auth/jwt-auth.guard.js";
 import { PermissionGuard } from "../auth/permission.guard.js";
 import { RequirePermission } from "../auth/decorators/require-permission.decorator.js";
@@ -16,6 +26,12 @@ import type { EdenAuthenticatedUser } from "../auth/jwt-auth.guard.js";
  * for companies. Write requires products:edit. Backend always
  * recalculates/validates: money fields are format-checked (non-negative)
  * in the DTO but no pricing logic runs here — that's Quotes, a later phase.
+ *
+ * Tipo/Grupo/Subgrupo/Marca/Unidade sub-catalogs (product_types/
+ * product_groups/product_subgroups/brands/units) share this controller,
+ * same style as FiscalController grouping fiscal_ncm/fiscal_cfop/etc. — no
+ * physical delete for any of them in this MVP, `active=false` is the
+ * "apagar".
  */
 @ApiTags("products")
 @ApiBearerAuth()
@@ -29,6 +45,126 @@ export class ProductsController {
     return this.products.list(includeInactive === "true");
   }
 
+  // -- product_types --------------------------------------------------------
+
+  @Get("types")
+  listTypes(@Query("includeInactive") includeInactive?: string) {
+    return this.products.listProductTypes(includeInactive === "true");
+  }
+
+  @Post("types")
+  @RequirePermission("products", "edit")
+  createType(@Body() dto: CreateProductTypeDto, @CurrentUser() user: EdenAuthenticatedUser) {
+    return this.products.createProductType(dto, user);
+  }
+
+  @Patch("types/:id")
+  @RequirePermission("products", "edit")
+  updateType(
+    @Param("id") id: string,
+    @Body() dto: UpdateProductTypeDto,
+    @CurrentUser() user: EdenAuthenticatedUser,
+  ) {
+    return this.products.updateProductType(id, dto, user);
+  }
+
+  // -- product_groups ---------------------------------------------------------
+
+  @Get("groups")
+  listGroups(@Query("includeInactive") includeInactive?: string) {
+    return this.products.listProductGroups(includeInactive === "true");
+  }
+
+  @Post("groups")
+  @RequirePermission("products", "edit")
+  createGroup(@Body() dto: CreateProductGroupDto, @CurrentUser() user: EdenAuthenticatedUser) {
+    return this.products.createProductGroup(dto, user);
+  }
+
+  @Patch("groups/:id")
+  @RequirePermission("products", "edit")
+  updateGroup(
+    @Param("id") id: string,
+    @Body() dto: UpdateProductGroupDto,
+    @CurrentUser() user: EdenAuthenticatedUser,
+  ) {
+    return this.products.updateProductGroup(id, dto, user);
+  }
+
+  // -- product_subgroups --------------------------------------------------------
+
+  @Get("subgroups")
+  listSubgroups(
+    @Query("groupId") groupId?: string,
+    @Query("includeInactive") includeInactive?: string,
+  ) {
+    return this.products.listProductSubgroups(groupId, includeInactive === "true");
+  }
+
+  @Post("subgroups")
+  @RequirePermission("products", "edit")
+  createSubgroup(@Body() dto: CreateProductSubgroupDto, @CurrentUser() user: EdenAuthenticatedUser) {
+    return this.products.createProductSubgroup(dto, user);
+  }
+
+  @Patch("subgroups/:id")
+  @RequirePermission("products", "edit")
+  updateSubgroup(
+    @Param("id") id: string,
+    @Body() dto: UpdateProductSubgroupDto,
+    @CurrentUser() user: EdenAuthenticatedUser,
+  ) {
+    return this.products.updateProductSubgroup(id, dto, user);
+  }
+
+  // -- brands -----------------------------------------------------------------
+
+  @Get("brands")
+  listBrands(@Query("includeInactive") includeInactive?: string) {
+    return this.products.listBrands(includeInactive === "true");
+  }
+
+  @Post("brands")
+  @RequirePermission("products", "edit")
+  createBrand(@Body() dto: CreateBrandDto, @CurrentUser() user: EdenAuthenticatedUser) {
+    return this.products.createBrand(dto, user);
+  }
+
+  @Patch("brands/:id")
+  @RequirePermission("products", "edit")
+  updateBrand(
+    @Param("id") id: string,
+    @Body() dto: UpdateBrandDto,
+    @CurrentUser() user: EdenAuthenticatedUser,
+  ) {
+    return this.products.updateBrand(id, dto, user);
+  }
+
+  // -- units --------------------------------------------------------------------
+
+  @Get("units")
+  listUnits(@Query("includeInactive") includeInactive?: string) {
+    return this.products.listUnits(includeInactive === "true");
+  }
+
+  @Post("units")
+  @RequirePermission("products", "edit")
+  createUnit(@Body() dto: CreateUnitDto, @CurrentUser() user: EdenAuthenticatedUser) {
+    return this.products.createUnit(dto, user);
+  }
+
+  @Patch("units/:id")
+  @RequirePermission("products", "edit")
+  updateUnit(
+    @Param("id") id: string,
+    @Body() dto: UpdateUnitDto,
+    @CurrentUser() user: EdenAuthenticatedUser,
+  ) {
+    return this.products.updateUnit(id, dto, user);
+  }
+
+  // -- products (:id must come after every static sub-route above) --------------
+
   @Get(":id")
   get(@Param("id") id: string) {
     return this.products.get(id);
diff --git a/apps/api/src/products/products.service.ts b/apps/api/src/products/products.service.ts
index e94589c..8a4cd24 100644
--- a/apps/api/src/products/products.service.ts
+++ b/apps/api/src/products/products.service.ts
@@ -1,8 +1,29 @@
-import { Injectable, NotFoundException } from "@nestjs/common";
-import { auditRepo, productsRepo, type Product } from "@eden/database";
+import { BadRequestException, ConflictException, Injectable, NotFoundException } from "@nestjs/common";
+import {
+  auditRepo,
+  productsRepo,
+  productCatalogsRepo,
+  type Product,
+  type ProductType,
+  type ProductGroup,
+  type ProductSubgroup,
+  type Brand,
+  type Unit,
+} from "@eden/database";
 import { emptyTariffRates, type TariffRates } from "@eden/domain-shared";
 import type { CreateProductDto } from "./dto/create-product.dto.js";
 import type { UpdateProductDto } from "./dto/update-product.dto.js";
+import type { CreateProductTypeDto } from "./dto/create-product-type.dto.js";
+import type { UpdateProductTypeDto } from "./dto/update-product-type.dto.js";
+import type { CreateProductGroupDto } from "./dto/create-product-group.dto.js";
+import type { UpdateProductGroupDto } from "./dto/update-product-group.dto.js";
+import type { CreateProductSubgroupDto } from "./dto/create-product-subgroup.dto.js";
+import type { UpdateProductSubgroupDto } from "./dto/update-product-subgroup.dto.js";
+import type { CreateBrandDto } from "./dto/create-brand.dto.js";
+import type { UpdateBrandDto } from "./dto/update-brand.dto.js";
+import type { CreateUnitDto } from "./dto/create-unit.dto.js";
+import type { UpdateUnitDto } from "./dto/update-unit.dto.js";
+import type { EdenAuthenticatedUser } from "../auth/jwt-auth.guard.js";
 
 /** DTO fields are individually optional (partial override); persisted tariff_rates always carries all 6 keys — mirrors the legacy's normalizeTariffRates(), never a partial object at rest. */
 function normalizeTariffRates(partial: Partial<TariffRates> | undefined): TariffRates | undefined {
@@ -10,6 +31,10 @@ function normalizeTariffRates(partial: Partial<TariffRates> | undefined): Tariff
   return { ...emptyTariffRates(), ...partial };
 }
 
+function isUniqueViolation(err: unknown): boolean {
+  return typeof err === "object" && err !== null && (err as { code?: string }).code === "23505";
+}
+
 @Injectable()
 export class ProductsService {
   list(includeInactive: boolean): Promise<Product[]> {
@@ -23,14 +48,17 @@ export class ProductsService {
   }
 
   async create(dto: CreateProductDto, actorId: string): Promise<Product> {
+    await this.assertCatalogReferencesValid(dto);
+    await this.assertSubgroupConsistent(dto, null);
+
     const product = await productsRepo.createProduct({
       name: dto.name,
       description: dto.description,
-      productType: dto.productType,
-      productGroup: dto.productGroup,
-      productSubgroup: dto.productSubgroup,
-      brand: dto.brand,
-      unit: dto.unit,
+      productTypeId: dto.productTypeId,
+      productGroupId: dto.productGroupId,
+      productSubgroupId: dto.productSubgroupId,
+      brandId: dto.brandId,
+      unitId: dto.unitId,
       active: dto.active,
       discontinued: dto.discontinued,
       tracksStock: dto.tracksStock,
@@ -63,16 +91,18 @@ export class ProductsService {
   }
 
   async update(id: string, dto: UpdateProductDto, actorId: string): Promise<Product> {
-    await this.get(id); // 404 if missing
+    const current = await this.get(id); // 404 if missing
+    await this.assertCatalogReferencesValid(dto);
+    await this.assertSubgroupConsistent(dto, current);
 
-    const product = await productsRepo.updateProduct(id, {
+    let product = await productsRepo.updateProduct(id, {
       name: dto.name,
       description: dto.description,
-      productType: dto.productType,
-      productGroup: dto.productGroup,
-      productSubgroup: dto.productSubgroup,
-      brand: dto.brand,
-      unit: dto.unit,
+      productTypeId: dto.productTypeId,
+      productGroupId: dto.productGroupId,
+      productSubgroupId: dto.productSubgroupId,
+      brandId: dto.brandId,
+      unitId: dto.unitId,
       active: dto.active,
       discontinued: dto.discontinued,
       tracksStock: dto.tracksStock,
@@ -93,6 +123,15 @@ export class ProductsService {
     });
     if (!product) throw new NotFoundException("Produto não encontrado");
 
+    // `productSubgroupId: null` is an explicit clear — the COALESCE-based
+    // update above can't express "set to NULL" vs. "leave unchanged"
+    // (both collapse to the same SQL NULL parameter), so it's a deliberate
+    // no-op there and corrected here with a dedicated statement.
+    if (dto.productSubgroupId === null) {
+      await productsRepo.clearProductSubgroup(id);
+      product = (await productsRepo.getProductById(id)) ?? product;
+    }
+
     await auditRepo.appendAuditEvent({
       actorType: "user",
       actorId,
@@ -104,4 +143,358 @@ export class ProductsService {
 
     return product;
   }
+
+  /**
+   * Validates the simple (existence-only) catalog references on
+   * create/update: type/unit/group/brand must exist. Subgroup consistency
+   * is handled separately by `assertSubgroupConsistent` — it needs the
+   * product's current state on update, which this method doesn't have.
+   */
+  private async assertCatalogReferencesValid(
+    dto: Partial<Pick<CreateProductDto, "productTypeId" | "unitId" | "productGroupId" | "brandId">>,
+  ): Promise<void> {
+    if (dto.productTypeId !== undefined) {
+      const type = await productCatalogsRepo.getProductTypeById(dto.productTypeId);
+      if (!type) throw new BadRequestException("Tipo de produto não encontrado");
+    }
+    if (dto.unitId !== undefined) {
+      const unit = await productCatalogsRepo.getUnitById(dto.unitId);
+      if (!unit) throw new BadRequestException("Unidade não encontrada");
+    }
+    if (dto.brandId !== undefined) {
+      const brand = await productCatalogsRepo.getBrandById(dto.brandId);
+      if (!brand) throw new BadRequestException("Marca não encontrada");
+    }
+    if (dto.productGroupId !== undefined) {
+      const group = await productCatalogsRepo.getProductGroupById(dto.productGroupId);
+      if (!group) throw new BadRequestException("Grupo de produto não encontrado");
+    }
+  }
+
+  /**
+   * `productSubgroupId === null` is an explicit "remove the subgroup"
+   * instruction — always valid, never looked up. Anything else is
+   * resolved against the EFFECTIVE resulting state (the DTO's value where
+   * provided, falling back to the current product's value otherwise) so a
+   * PATCH that only changes `productGroupId` can't silently leave behind a
+   * subgroup that no longer belongs to the new group — it's rejected with
+   * a clear message instead of a corrupted invariant.
+   */
+  private async assertSubgroupConsistent(
+    dto: Pick<UpdateProductDto, "productGroupId" | "productSubgroupId">,
+    current: Pick<Product, "product_group_id" | "product_subgroup_id"> | null,
+  ): Promise<void> {
+    if (dto.productSubgroupId === null) return;
+
+    const effectiveGroupId = dto.productGroupId !== undefined ? dto.productGroupId : (current?.product_group_id ?? undefined);
+    const effectiveSubgroupId = dto.productSubgroupId !== undefined ? dto.productSubgroupId : (current?.product_subgroup_id ?? undefined);
+    if (!effectiveSubgroupId) return;
+
+    const subgroup = await productCatalogsRepo.getProductSubgroupById(effectiveSubgroupId);
+    if (!subgroup) throw new BadRequestException("Subgrupo de produto não encontrado");
+    if (!effectiveGroupId) {
+      throw new BadRequestException("Grupo de produto é obrigatório quando um subgrupo é informado");
+    }
+    if (subgroup.group_id !== effectiveGroupId) {
+      throw new BadRequestException(
+        dto.productGroupId !== undefined && dto.productSubgroupId === undefined
+          ? "O novo grupo é incompatível com o subgrupo atual do produto — informe também um subgrupo válido para o novo grupo, ou envie productSubgroupId: null para removê-lo."
+          : "Subgrupo não pertence ao grupo informado",
+      );
+    }
+  }
+
+  // ---------------------------------------------------------------------
+  // product_types
+  // ---------------------------------------------------------------------
+
+  listProductTypes(includeInactive: boolean): Promise<ProductType[]> {
+    return productCatalogsRepo.listProductTypes(includeInactive);
+  }
+
+  async createProductType(dto: CreateProductTypeDto, user: EdenAuthenticatedUser): Promise<ProductType> {
+    let row: ProductType;
+    try {
+      row = await productCatalogsRepo.createProductType({
+        name: dto.name,
+        active: dto.active,
+        createdBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe um tipo de produto com esse nome");
+      throw err;
+    }
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_type.created",
+      resourceType: "product_type",
+      resourceId: row.id,
+    });
+    return row;
+  }
+
+  async updateProductType(
+    id: string,
+    dto: UpdateProductTypeDto,
+    user: EdenAuthenticatedUser,
+  ): Promise<ProductType> {
+    let row: ProductType | null;
+    try {
+      row = await productCatalogsRepo.updateProductType(id, {
+        name: dto.name,
+        active: dto.active,
+        updatedBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe um tipo de produto com esse nome");
+      throw err;
+    }
+    if (!row) throw new NotFoundException("Tipo de produto não encontrado");
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_type.updated",
+      resourceType: "product_type",
+      resourceId: id,
+      metadata: { ...dto },
+    });
+    return row;
+  }
+
+  // ---------------------------------------------------------------------
+  // product_groups
+  // ---------------------------------------------------------------------
+
+  listProductGroups(includeInactive: boolean): Promise<ProductGroup[]> {
+    return productCatalogsRepo.listProductGroups(includeInactive);
+  }
+
+  async createProductGroup(dto: CreateProductGroupDto, user: EdenAuthenticatedUser): Promise<ProductGroup> {
+    let row: ProductGroup;
+    try {
+      row = await productCatalogsRepo.createProductGroup({
+        name: dto.name,
+        active: dto.active,
+        createdBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe um grupo de produto com esse nome");
+      throw err;
+    }
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_group.created",
+      resourceType: "product_group",
+      resourceId: row.id,
+    });
+    return row;
+  }
+
+  async updateProductGroup(
+    id: string,
+    dto: UpdateProductGroupDto,
+    user: EdenAuthenticatedUser,
+  ): Promise<ProductGroup> {
+    let row: ProductGroup | null;
+    try {
+      row = await productCatalogsRepo.updateProductGroup(id, {
+        name: dto.name,
+        active: dto.active,
+        updatedBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe um grupo de produto com esse nome");
+      throw err;
+    }
+    if (!row) throw new NotFoundException("Grupo de produto não encontrado");
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_group.updated",
+      resourceType: "product_group",
+      resourceId: id,
+      metadata: { ...dto },
+    });
+    return row;
+  }
+
+  // ---------------------------------------------------------------------
+  // product_subgroups
+  // ---------------------------------------------------------------------
+
+  listProductSubgroups(groupId: string | undefined, includeInactive: boolean): Promise<ProductSubgroup[]> {
+    return productCatalogsRepo.listProductSubgroups(groupId, includeInactive);
+  }
+
+  async createProductSubgroup(
+    dto: CreateProductSubgroupDto,
+    user: EdenAuthenticatedUser,
+  ): Promise<ProductSubgroup> {
+    const group = await productCatalogsRepo.getProductGroupById(dto.groupId);
+    if (!group) throw new BadRequestException("Grupo de produto não encontrado");
+
+    let row: ProductSubgroup;
+    try {
+      row = await productCatalogsRepo.createProductSubgroup({
+        groupId: dto.groupId,
+        name: dto.name,
+        active: dto.active,
+        createdBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) {
+        throw new ConflictException("Já existe um subgrupo com esse nome nesse grupo");
+      }
+      throw err;
+    }
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_subgroup.created",
+      resourceType: "product_subgroup",
+      resourceId: row.id,
+      metadata: { groupId: dto.groupId },
+    });
+    return row;
+  }
+
+  async updateProductSubgroup(
+    id: string,
+    dto: UpdateProductSubgroupDto,
+    user: EdenAuthenticatedUser,
+  ): Promise<ProductSubgroup> {
+    let row: ProductSubgroup | null;
+    try {
+      row = await productCatalogsRepo.updateProductSubgroup(id, {
+        name: dto.name,
+        active: dto.active,
+        updatedBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) {
+        throw new ConflictException("Já existe um subgrupo com esse nome nesse grupo");
+      }
+      throw err;
+    }
+    if (!row) throw new NotFoundException("Subgrupo de produto não encontrado");
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "product_subgroup.updated",
+      resourceType: "product_subgroup",
+      resourceId: id,
+      metadata: { ...dto },
+    });
+    return row;
+  }
+
+  // ---------------------------------------------------------------------
+  // brands
+  // ---------------------------------------------------------------------
+
+  listBrands(includeInactive: boolean): Promise<Brand[]> {
+    return productCatalogsRepo.listBrands(includeInactive);
+  }
+
+  async createBrand(dto: CreateBrandDto, user: EdenAuthenticatedUser): Promise<Brand> {
+    let row: Brand;
+    try {
+      row = await productCatalogsRepo.createBrand({
+        name: dto.name,
+        active: dto.active,
+        createdBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe uma marca com esse nome");
+      throw err;
+    }
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "brand.created",
+      resourceType: "brand",
+      resourceId: row.id,
+    });
+    return row;
+  }
+
+  async updateBrand(id: string, dto: UpdateBrandDto, user: EdenAuthenticatedUser): Promise<Brand> {
+    let row: Brand | null;
+    try {
+      row = await productCatalogsRepo.updateBrand(id, {
+        name: dto.name,
+        active: dto.active,
+        updatedBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe uma marca com esse nome");
+      throw err;
+    }
+    if (!row) throw new NotFoundException("Marca não encontrada");
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "brand.updated",
+      resourceType: "brand",
+      resourceId: id,
+      metadata: { ...dto },
+    });
+    return row;
+  }
+
+  // ---------------------------------------------------------------------
+  // units
+  // ---------------------------------------------------------------------
+
+  listUnits(includeInactive: boolean): Promise<Unit[]> {
+    return productCatalogsRepo.listUnits(includeInactive);
+  }
+
+  async createUnit(dto: CreateUnitDto, user: EdenAuthenticatedUser): Promise<Unit> {
+    let row: Unit;
+    try {
+      row = await productCatalogsRepo.createUnit({
+        name: dto.name,
+        active: dto.active,
+        createdBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe uma unidade com esse nome");
+      throw err;
+    }
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "unit.created",
+      resourceType: "unit",
+      resourceId: row.id,
+    });
+    return row;
+  }
+
+  async updateUnit(id: string, dto: UpdateUnitDto, user: EdenAuthenticatedUser): Promise<Unit> {
+    let row: Unit | null;
+    try {
+      row = await productCatalogsRepo.updateUnit(id, {
+        name: dto.name,
+        active: dto.active,
+        updatedBy: user.id,
+      });
+    } catch (err) {
+      if (isUniqueViolation(err)) throw new ConflictException("Já existe uma unidade com esse nome");
+      throw err;
+    }
+    if (!row) throw new NotFoundException("Unidade não encontrada");
+    await auditRepo.appendAuditEvent({
+      actorType: "user",
+      actorId: user.id,
+      action: "unit.updated",
+      resourceType: "unit",
+      resourceId: id,
+      metadata: { ...dto },
+    });
+    return row;
+  }
 }
diff --git a/apps/api/test/anatel-pdf.spec.ts b/apps/api/test/anatel-pdf.spec.ts
index aa525ae..8166eb5 100644
--- a/apps/api/test/anatel-pdf.spec.ts
+++ b/apps/api/test/anatel-pdf.spec.ts
@@ -1,6 +1,6 @@
 import { INestApplication } from "@nestjs/common";
 import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
-import { agent, bearer, closeTestApp, createTestApp, loginSuperAdmin, type AuthedTokens } from "./setup.js";
+import { agent, bearer, closeTestApp, createTestApp, loginSuperAdmin, qaName, type AuthedTokens } from "./setup.js";
 
 /**
  * `renderPdf` is mocked (real call path through quotes.service.ts still
@@ -22,6 +22,8 @@ describe("quotes — anexo de conformidade ANATEL/RGC", () => {
   let resellerId: string;
   let stfcProductId: string;
   let pabxProductId: string;
+  let productTypeId: string;
+  let unitId: string;
 
   beforeAll(async () => {
     app = await createTestApp();
@@ -34,12 +36,27 @@ describe("quotes — anexo de conformidade ANATEL/RGC", () => {
       .expect(201);
     resellerId = reseller.body.id;
 
+    const productType = await agent(app)
+      .post("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Tipo ANATEL") })
+      .expect(201);
+    productTypeId = productType.body.id;
+
+    const unit = await agent(app)
+      .post("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Unidade ANATEL") })
+      .expect(201);
+    unitId = unit.body.id;
+
     const stfcProduct = await agent(app)
       .post("/api/v1/products")
       .set(...bearer(admin.accessToken))
       .send({
         name: "qa-test- Linha STFC",
-        productType: "service",
+        productTypeId,
+        unitId,
         price0: 200,
         price12: 150,
         serviceType: "STFC",
@@ -63,7 +80,7 @@ describe("quotes — anexo de conformidade ANATEL/RGC", () => {
     const pabxProduct = await agent(app)
       .post("/api/v1/products")
       .set(...bearer(admin.accessToken))
-      .send({ name: "qa-test- Ramal PABX", productType: "service", price0: 50, serviceType: "Serviço PABX" })
+      .send({ name: "qa-test- Ramal PABX", productTypeId, unitId, price0: 50, serviceType: "Serviço PABX" })
       .expect(201);
     pabxProductId = pabxProduct.body.id;
   });
diff --git a/apps/api/test/contracts-edit-lock.spec.ts b/apps/api/test/contracts-edit-lock.spec.ts
index c338374..c12f9c0 100644
--- a/apps/api/test/contracts-edit-lock.spec.ts
+++ b/apps/api/test/contracts-edit-lock.spec.ts
@@ -9,6 +9,7 @@ import {
   loginSuperAdmin,
   qaEmail,
   qaKey,
+  qaName,
   type AuthedTokens,
 } from "./setup.js";
 
@@ -45,10 +46,27 @@ describe("contracts — edit lock past 'draft'", () => {
       .expect(201);
     resellerId = reseller.body.id;
 
+    const productType = await agent(app)
+      .post("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Tipo Contract Lock") })
+      .expect(201);
+
+    const unit = await agent(app)
+      .post("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Unidade Contract Lock") })
+      .expect(201);
+
     const product = await agent(app)
       .post("/api/v1/products")
       .set(...bearer(admin.accessToken))
-      .send({ name: "qa-test- Produto Contract Lock", productType: "service", price0: 100 })
+      .send({
+        name: "qa-test- Produto Contract Lock",
+        productTypeId: productType.body.id,
+        unitId: unit.body.id,
+        price0: 100,
+      })
       .expect(201);
     productId = product.body.id;
 
diff --git a/apps/api/test/mass-assignment.spec.ts b/apps/api/test/mass-assignment.spec.ts
index 2f3f925..60191e5 100644
--- a/apps/api/test/mass-assignment.spec.ts
+++ b/apps/api/test/mass-assignment.spec.ts
@@ -50,7 +50,8 @@ describe("mass-assignment — unexpected fields are rejected, not silently dropp
       .set(...bearer(admin.accessToken))
       .send({
         name: "qa-test- mass assignment product",
-        productType: "service",
+        productTypeId: "11111111-1111-1111-1111-111111111111",
+        unitId: "11111111-1111-1111-1111-111111111111",
         createdBy: "11111111-1111-1111-1111-111111111111",
       })
       .expect(400);
diff --git a/apps/api/test/product-catalogs.spec.ts b/apps/api/test/product-catalogs.spec.ts
new file mode 100644
index 0000000..e49bd14
--- /dev/null
+++ b/apps/api/test/product-catalogs.spec.ts
@@ -0,0 +1,444 @@
+import { INestApplication } from "@nestjs/common";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import { agent, bearer, closeTestApp, createTestApp, loginSuperAdmin, qaName, type AuthedTokens } from "./setup.js";
+
+/**
+ * Covers the Tipo/Grupo/Subgrupo/Marca/Unidade catalogs
+ * (1789694035000_product-catalogs.cjs) that replaced products'
+ * product_type/product_group/product_subgroup/brand/unit free-TEXT
+ * columns: create/list/update per catalog, case-insensitive duplicate
+ * name -> 409, subgroup without groupId -> 400, and the product-creation
+ * flow referencing these catalogs by ID including the subgroup/group
+ * mismatch -> 400 case (products.service.ts's assertCatalogReferencesValid).
+ *
+ * Every catalog name uses qaName() (random suffix) rather than a fixed
+ * "qa-test- Foo" literal: these 5 catalogs are enforced by a
+ * case-insensitive UNIQUE index and have no delete endpoint (active=false
+ * is the only "apagar"), so a hardcoded name would collide with a row left
+ * behind by a previous run of this suite against the same shared dev
+ * Postgres.
+ */
+describe("product catalogs — types/groups/subgroups/brands/units", () => {
+  let app: INestApplication;
+  let admin: AuthedTokens;
+
+  beforeAll(async () => {
+    app = await createTestApp();
+    admin = await loginSuperAdmin(app);
+  });
+
+  afterAll(async () => {
+    await closeTestApp(app);
+  });
+
+  it("creates, lists and updates a product type", async () => {
+    const name = qaName("Tipo Catalogo");
+    const created = await agent(app)
+      .post("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+    expect(created.body.id).toBeTypeOf("string");
+    expect(created.body.active).toBe(true);
+
+    const list = await agent(app)
+      .get("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .expect(200);
+    expect(list.body.some((row: { id: string }) => row.id === created.body.id)).toBe(true);
+
+    const updated = await agent(app)
+      .patch(`/api/v1/products/types/${created.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .send({ active: false })
+      .expect(200);
+    expect(updated.body.active).toBe(false);
+  });
+
+  it("rejects a duplicate product type name case-insensitively with 409", async () => {
+    const name = qaName("Tipo Duplicado");
+    await agent(app)
+      .post("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+
+    await agent(app)
+      .post("/api/v1/products/types")
+      .set(...bearer(admin.accessToken))
+      .send({ name: name.toUpperCase() })
+      .expect(409);
+  });
+
+  it("creates, lists and updates a product group", async () => {
+    const name = qaName("Grupo Catalogo");
+    const created = await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+    expect(created.body.id).toBeTypeOf("string");
+
+    const list = await agent(app)
+      .get("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .expect(200);
+    expect(list.body.some((row: { id: string }) => row.id === created.body.id)).toBe(true);
+
+    const renamed = `${name} Renomeado`;
+    const updated = await agent(app)
+      .patch(`/api/v1/products/groups/${created.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .send({ name: renamed })
+      .expect(200);
+    expect(updated.body.name).toBe(renamed);
+  });
+
+  it("rejects a duplicate product group name case-insensitively with 409", async () => {
+    const name = qaName("Grupo Duplicado");
+    await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+
+    await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: name.toLowerCase() })
+      .expect(409);
+  });
+
+  it("creates a subgroup scoped to a group, lists it filtered by groupId, and updates it", async () => {
+    const group = await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Grupo Para Subgrupo") })
+      .expect(201);
+
+    const subgroupName = qaName("Subgrupo A");
+    const subgroup = await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: subgroupName, groupId: group.body.id })
+      .expect(201);
+    expect(subgroup.body.group_id).toBe(group.body.id);
+
+    const list = await agent(app)
+      .get(`/api/v1/products/subgroups?groupId=${group.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .expect(200);
+    expect(list.body).toHaveLength(1);
+    expect(list.body[0].id).toBe(subgroup.body.id);
+
+    const renamed = `${subgroupName} Renomeado`;
+    const updated = await agent(app)
+      .patch(`/api/v1/products/subgroups/${subgroup.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .send({ name: renamed })
+      .expect(200);
+    expect(updated.body.name).toBe(renamed);
+  });
+
+  it("allows the same subgroup name under two different groups", async () => {
+    const groupA = await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Grupo Repeticao A") })
+      .expect(201);
+    const groupB = await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Grupo Repeticao B") })
+      .expect(201);
+
+    const subgroupName = qaName("Subgrupo Repetido");
+    await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: subgroupName, groupId: groupA.body.id })
+      .expect(201);
+
+    await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: subgroupName, groupId: groupB.body.id })
+      .expect(201);
+  });
+
+  it("rejects a duplicate subgroup name within the same group with 409", async () => {
+    const group = await agent(app)
+      .post("/api/v1/products/groups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Grupo Subgrupo Duplicado") })
+      .expect(201);
+
+    const subgroupName = qaName("Subgrupo Dup");
+    await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: subgroupName, groupId: group.body.id })
+      .expect(201);
+
+    await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: subgroupName.toUpperCase(), groupId: group.body.id })
+      .expect(409);
+  });
+
+  it("rejects creating a subgroup without groupId with 400", async () => {
+    await agent(app)
+      .post("/api/v1/products/subgroups")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Subgrupo Sem Grupo") })
+      .expect(400);
+  });
+
+  it("creates, lists and updates a brand", async () => {
+    const created = await agent(app)
+      .post("/api/v1/products/brands")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Marca Catalogo") })
+      .expect(201);
+
+    const list = await agent(app)
+      .get("/api/v1/products/brands")
+      .set(...bearer(admin.accessToken))
+      .expect(200);
+    expect(list.body.some((row: { id: string }) => row.id === created.body.id)).toBe(true);
+
+    await agent(app)
+      .patch(`/api/v1/products/brands/${created.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .send({ active: false })
+      .expect(200);
+  });
+
+  it("rejects a duplicate brand name case-insensitively with 409", async () => {
+    const name = qaName("Marca Duplicada");
+    await agent(app)
+      .post("/api/v1/products/brands")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+    await agent(app)
+      .post("/api/v1/products/brands")
+      .set(...bearer(admin.accessToken))
+      .send({ name: name.toUpperCase() })
+      .expect(409);
+  });
+
+  it("creates, lists and updates a unit", async () => {
+    const created = await agent(app)
+      .post("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .send({ name: qaName("Unidade Catalogo") })
+      .expect(201);
+
+    const list = await agent(app)
+      .get("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .expect(200);
+    expect(list.body.some((row: { id: string }) => row.id === created.body.id)).toBe(true);
+
+    await agent(app)
+      .patch(`/api/v1/products/units/${created.body.id}`)
+      .set(...bearer(admin.accessToken))
+      .send({ active: false })
+      .expect(200);
+  });
+
+  it("rejects a duplicate unit name case-insensitively with 409", async () => {
+    const name = qaName("Unidade Duplicada");
+    await agent(app)
+      .post("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .send({ name })
+      .expect(201);
+    await agent(app)
+      .post("/api/v1/products/units")
+      .set(...bearer(admin.accessToken))
+      .send({ name: name.toLowerCase() })
+      .expect(409);
+  });
+
+  describe("product creation using catalog IDs", () => {
+    let productTypeId: string;
+    let unitId: string;
+    let groupId: string;
+    let otherGroupId: string;
+    let subgroupId: string;
+    let brandId: string;
+    let productTypeName: string;
+    let unitName: string;
+    let groupName: string;
+    let subgroupName: string;
+    let brandName: string;
+
+    beforeAll(async () => {
+      productTypeName = qaName("Tipo Produto Final");
+      const type = await agent(app)
+        .post("/api/v1/products/types")
+        .set(...bearer(admin.accessToken))
+        .send({ name: productTypeName })
+        .expect(201);
+      productTypeId = type.body.id;
+
+      unitName = qaName("Unidade Produto Final");
+      const unit = await agent(app)
+        .post("/api/v1/products/units")
+        .set(...bearer(admin.accessToken))
+        .send({ name: unitName })
+        .expect(201);
+      unitId = unit.body.id;
+
+      groupName = qaName("Grupo Produto Final");
+      const group = await agent(app)
+        .post("/api/v1/products/groups")
+        .set(...bearer(admin.accessToken))
+        .send({ name: groupName })
+        .expect(201);
+      groupId = group.body.id;
+
+      const otherGroup = await agent(app)
+        .post("/api/v1/products/groups")
+        .set(...bearer(admin.accessToken))
+        .send({ name: qaName("Outro Grupo Produto Final") })
+        .expect(201);
+      otherGroupId = otherGroup.body.id;
+
+      subgroupName = qaName("Subgrupo Produto Final");
+      const subgroup = await agent(app)
+        .post("/api/v1/products/subgroups")
+        .set(...bearer(admin.accessToken))
+        .send({ name: subgroupName, groupId })
+        .expect(201);
+      subgroupId = subgroup.body.id;
+
+      brandName = qaName("Marca Produto Final");
+      const brand = await agent(app)
+        .post("/api/v1/products/brands")
+        .set(...bearer(admin.accessToken))
+        .send({ name: brandName })
+        .expect(201);
+      brandId = brand.body.id;
+    });
+
+    it("creates a product referencing every catalog and resolves *_name on GET", async () => {
+      const product = await agent(app)
+        .post("/api/v1/products")
+        .set(...bearer(admin.accessToken))
+        .send({
+          name: qaName("Produto Catalogos"),
+          productTypeId,
+          unitId,
+          productGroupId: groupId,
+          productSubgroupId: subgroupId,
+          brandId,
+          price0: 10,
+        })
+        .expect(201);
+
+      expect(product.body.product_type_id).toBe(productTypeId);
+      expect(product.body.unit_id).toBe(unitId);
+      expect(product.body.product_group_id).toBe(groupId);
+      expect(product.body.product_subgroup_id).toBe(subgroupId);
+      expect(product.body.brand_id).toBe(brandId);
+
+      const fetched = await agent(app)
+        .get(`/api/v1/products/${product.body.id}`)
+        .set(...bearer(admin.accessToken))
+        .expect(200);
+      expect(fetched.body.product_type_name).toBe(productTypeName);
+      expect(fetched.body.unit_name).toBe(unitName);
+      expect(fetched.body.product_group_name).toBe(groupName);
+      expect(fetched.body.product_subgroup_name).toBe(subgroupName);
+      expect(fetched.body.brand_name).toBe(brandName);
+    });
+
+    it("rejects (400) a product whose subgroup belongs to a different group than the one informed", async () => {
+      const res = await agent(app)
+        .post("/api/v1/products")
+        .set(...bearer(admin.accessToken))
+        .send({
+          name: qaName("Produto Grupo Errado"),
+          productTypeId,
+          unitId,
+          productGroupId: otherGroupId,
+          productSubgroupId: subgroupId,
+        })
+        .expect(400);
+      expect(res.body.message).toContain("Subgrupo não pertence ao grupo informado");
+    });
+
+    it("rejects (400) a product whose subgroup is informed without a groupId", async () => {
+      const res = await agent(app)
+        .post("/api/v1/products")
+        .set(...bearer(admin.accessToken))
+        .send({
+          name: qaName("Produto Sem Grupo"),
+          productTypeId,
+          unitId,
+          productSubgroupId: subgroupId,
+        })
+        .expect(400);
+      expect(res.body.message).toContain("Grupo de produto é obrigatório");
+    });
+
+    describe("update — subgroup consistency (COALESCE can't express 'clear', handled explicitly)", () => {
+      let productId: string;
+
+      beforeAll(async () => {
+        const product = await agent(app)
+          .post("/api/v1/products")
+          .set(...bearer(admin.accessToken))
+          .send({
+            name: qaName("Produto Update Subgrupo"),
+            productTypeId,
+            unitId,
+            productGroupId: groupId,
+            productSubgroupId: subgroupId,
+          })
+          .expect(201);
+        productId = product.body.id;
+      });
+
+      it("rejects (400) changing the group without resolving the now-orphaned subgroup — never silently corrupts the invariant", async () => {
+        const res = await agent(app)
+          .patch(`/api/v1/products/${productId}`)
+          .set(...bearer(admin.accessToken))
+          .send({ productGroupId: otherGroupId })
+          .expect(400);
+        expect(res.body.message).toMatch(/incompatível/);
+
+        const unchanged = await agent(app).get(`/api/v1/products/${productId}`).set(...bearer(admin.accessToken)).expect(200);
+        expect(unchanged.body.product_group_id).toBe(groupId);
+        expect(unchanged.body.product_subgroup_id).toBe(subgroupId);
+      });
+
+      it("explicit productSubgroupId: null actually clears it (not a no-op)", async () => {
+        const res = await agent(app)
+          .patch(`/api/v1/products/${productId}`)
+          .set(...bearer(admin.accessToken))
+          .send({ productSubgroupId: null })
+          .expect(200);
+        expect(res.body.product_subgroup_id).toBeNull();
+        expect(res.body.product_subgroup_name).toBeNull();
+
+        const fetched = await agent(app).get(`/api/v1/products/${productId}`).set(...bearer(admin.accessToken)).expect(200);
+        expect(fetched.body.product_subgroup_id).toBeNull();
+      });
+
+      it("changing the group now works once the subgroup is cleared", async () => {
+        const res = await agent(app)
+          .patch(`/api/v1/products/${productId}`)
+          .set(...bearer(admin.accessToken))
+          .send({ productGroupId: otherGroupId })
+          .expect(200);
+        expect(res.body.product_group_id).toBe(otherGroupId);
+        expect(res.body.product_subgroup_id).toBeNull();
+      });
+    });
+  });
+});
diff --git a/apps/api/test/setup.ts b/apps/api/test/setup.ts
index 7d0d426..291aedc 100644
--- a/apps/api/test/setup.ts
+++ b/apps/api/test/setup.ts
@@ -118,3 +118,14 @@ export function qaKey(label: string): string {
   // apps/api/src/roles/dto/create-role.dto.ts).
   return `qa_${label}_${rand}`.slice(0, 30);
 }
+
+/**
+ * Random-suffixed display name, for fixtures backed by a case-insensitive
+ * UNIQUE index with no delete endpoint (e.g. product_types/product_groups/
+ * brands/units) — a hardcoded name would collide with a row left behind by
+ * a previous run of this suite against the same shared dev database.
+ */
+export function qaName(label: string): string {
+  const rand = Math.random().toString(36).slice(2, 8);
+  return `${QA_PREFIX}${label} ${rand}`;
+}
diff --git a/apps/core-web/src/App.tsx b/apps/core-web/src/App.tsx
index d6d53e7..b1be7f8 100644
--- a/apps/core-web/src/App.tsx
+++ b/apps/core-web/src/App.tsx
@@ -8,6 +8,10 @@ import { CompaniesListPage } from "./routes/companies/CompaniesListPage.js";
 import { CompanyFormPage } from "./routes/companies/CompanyFormPage.js";
 import { ProductsListPage } from "./routes/products/ProductsListPage.js";
 import { ProductFormPage } from "./routes/products/ProductFormPage.js";
+import { ProductTypesListPage } from "./routes/products/catalogs/ProductTypesListPage.js";
+import { ProductGroupsListPage } from "./routes/products/catalogs/ProductGroupsListPage.js";
+import { BrandsListPage } from "./routes/products/catalogs/BrandsListPage.js";
+import { UnitsListPage } from "./routes/products/catalogs/UnitsListPage.js";
 import { ResellersListPage } from "./routes/resellers/ResellersListPage.js";
 import { ResellerFormPage } from "./routes/resellers/ResellerFormPage.js";
 import { LeadsListPage } from "./routes/crm/LeadsListPage.js";
@@ -82,6 +86,10 @@ export function App() {
               <Route path="/products" element={<ProductsListPage />} />
               <Route path="/products/new" element={<ProductFormPage />} />
               <Route path="/products/:id/edit" element={<ProductFormPage />} />
+              <Route path="/products/types" element={<ProductTypesListPage />} />
+              <Route path="/products/groups" element={<ProductGroupsListPage />} />
+              <Route path="/products/brands" element={<BrandsListPage />} />
+              <Route path="/products/units" element={<UnitsListPage />} />
 
               <Route path="/resellers" element={<ResellersListPage />} />
               <Route path="/resellers/new" element={<ResellerFormPage />} />
diff --git a/apps/core-web/src/lib/api/product-catalogs.ts b/apps/core-web/src/lib/api/product-catalogs.ts
new file mode 100644
index 0000000..f7d00cd
--- /dev/null
+++ b/apps/core-web/src/lib/api/product-catalogs.ts
@@ -0,0 +1,165 @@
+/**
+ * Client for `apps/api` `/v1/products/{types,groups,subgroups,brands,units}`
+ * (see apps/api/src/products/products.controller.ts, products.service.ts and
+ * packages/database/src/repositories/product-catalogs.ts for the source of
+ * truth — shapes below are mirrored, not invented). Same "simple catalog"
+ * convention as `./fiscal.ts` (NCM/CFOP): no physical delete, `active: false`
+ * via `PATCH` is the "apagar". `includeInactive` defaults to `true` here
+ * (unlike the bare API default) so the admin catalog screens can show
+ * inactive rows too, with a toggle to reactivate — same choice as
+ * `./warehouses.ts`.
+ */
+import { apiRequest } from "./http.js";
+
+/** Response shape — snake_case, exactly as returned by each simple catalog table. */
+export interface SimpleCatalogRow {
+  id: string;
+  name: string;
+  active: boolean;
+  created_at: string;
+  updated_at: string;
+  created_by: string | null;
+  updated_by: string | null;
+}
+
+export type ProductTypeRow = SimpleCatalogRow;
+export type ProductGroupRow = SimpleCatalogRow;
+export type BrandRow = SimpleCatalogRow;
+export type UnitRow = SimpleCatalogRow;
+
+/** Subgroups always belong to a group — `group_id` is never patchable (see `UpdateProductSubgroupDto`). */
+export interface ProductSubgroupRow extends SimpleCatalogRow {
+  group_id: string;
+}
+
+export interface UpdateSimpleCatalogInput {
+  name?: string;
+  active?: boolean;
+}
+
+function catalogListPath(base: string, includeInactive: boolean): string {
+  return includeInactive ? `${base}?includeInactive=true` : base;
+}
+
+// ---- Tipos ----
+export function listProductTypes(accessToken: string, includeInactive = true): Promise<ProductTypeRow[]> {
+  return apiRequest<ProductTypeRow[]>(
+    catalogListPath("/products/types", includeInactive),
+    { method: "GET" },
+    { accessToken },
+  );
+}
+export function createProductType(name: string, accessToken: string): Promise<ProductTypeRow> {
+  return apiRequest<ProductTypeRow>(
+    "/products/types",
+    { method: "POST", body: JSON.stringify({ name }) },
+    { accessToken },
+  );
+}
+export function updateProductType(
+  id: string,
+  input: UpdateSimpleCatalogInput,
+  accessToken: string,
+): Promise<ProductTypeRow> {
+  return apiRequest<ProductTypeRow>(
+    `/products/types/${id}`,
+    { method: "PATCH", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
+
+// ---- Grupos ----
+export function listProductGroups(accessToken: string, includeInactive = true): Promise<ProductGroupRow[]> {
+  return apiRequest<ProductGroupRow[]>(
+    catalogListPath("/products/groups", includeInactive),
+    { method: "GET" },
+    { accessToken },
+  );
+}
+export function createProductGroup(name: string, accessToken: string): Promise<ProductGroupRow> {
+  return apiRequest<ProductGroupRow>(
+    "/products/groups",
+    { method: "POST", body: JSON.stringify({ name }) },
+    { accessToken },
+  );
+}
+export function updateProductGroup(
+  id: string,
+  input: UpdateSimpleCatalogInput,
+  accessToken: string,
+): Promise<ProductGroupRow> {
+  return apiRequest<ProductGroupRow>(
+    `/products/groups/${id}`,
+    { method: "PATCH", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
+
+// ---- Subgrupos (sempre escopados a um grupo) ----
+export function listProductSubgroups(
+  accessToken: string,
+  options: { groupId?: string; includeInactive?: boolean } = {},
+): Promise<ProductSubgroupRow[]> {
+  const { groupId, includeInactive = true } = options;
+  const params = new URLSearchParams();
+  if (groupId) params.set("groupId", groupId);
+  if (includeInactive) params.set("includeInactive", "true");
+  const query = params.toString();
+  return apiRequest<ProductSubgroupRow[]>(
+    `/products/subgroups${query ? `?${query}` : ""}`,
+    { method: "GET" },
+    { accessToken },
+  );
+}
+export function createProductSubgroup(
+  input: { name: string; groupId: string },
+  accessToken: string,
+): Promise<ProductSubgroupRow> {
+  return apiRequest<ProductSubgroupRow>(
+    "/products/subgroups",
+    { method: "POST", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
+/** `groupId` is deliberately not accepted here — a subgroup never changes group in this MVP (see backend `UpdateProductSubgroupDto`). */
+export function updateProductSubgroup(
+  id: string,
+  input: UpdateSimpleCatalogInput,
+  accessToken: string,
+): Promise<ProductSubgroupRow> {
+  return apiRequest<ProductSubgroupRow>(
+    `/products/subgroups/${id}`,
+    { method: "PATCH", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
+
+// ---- Marcas ----
+export function listBrands(accessToken: string, includeInactive = true): Promise<BrandRow[]> {
+  return apiRequest<BrandRow[]>(catalogListPath("/products/brands", includeInactive), { method: "GET" }, { accessToken });
+}
+export function createBrand(name: string, accessToken: string): Promise<BrandRow> {
+  return apiRequest<BrandRow>("/products/brands", { method: "POST", body: JSON.stringify({ name }) }, { accessToken });
+}
+export function updateBrand(id: string, input: UpdateSimpleCatalogInput, accessToken: string): Promise<BrandRow> {
+  return apiRequest<BrandRow>(
+    `/products/brands/${id}`,
+    { method: "PATCH", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
+
+// ---- Unidades ----
+export function listUnits(accessToken: string, includeInactive = true): Promise<UnitRow[]> {
+  return apiRequest<UnitRow[]>(catalogListPath("/products/units", includeInactive), { method: "GET" }, { accessToken });
+}
+export function createUnit(name: string, accessToken: string): Promise<UnitRow> {
+  return apiRequest<UnitRow>("/products/units", { method: "POST", body: JSON.stringify({ name }) }, { accessToken });
+}
+export function updateUnit(id: string, input: UpdateSimpleCatalogInput, accessToken: string): Promise<UnitRow> {
+  return apiRequest<UnitRow>(
+    `/products/units/${id}`,
+    { method: "PATCH", body: JSON.stringify(input) },
+    { accessToken },
+  );
+}
diff --git a/apps/core-web/src/lib/api/products.ts b/apps/core-web/src/lib/api/products.ts
index 7ec1945..7be39ad 100644
--- a/apps/core-web/src/lib/api/products.ts
+++ b/apps/core-web/src/lib/api/products.ts
@@ -22,11 +22,16 @@ export interface Product {
   product_code: number;
   name: string;
   description: string | null;
-  product_type: string;
-  product_group: string | null;
-  product_subgroup: string | null;
-  brand: string | null;
-  unit: string;
+  product_type_id: string;
+  product_type_name: string;
+  product_group_id: string | null;
+  product_group_name: string | null;
+  product_subgroup_id: string | null;
+  product_subgroup_name: string | null;
+  brand_id: string | null;
+  brand_name: string | null;
+  unit_id: string;
+  unit_name: string;
   active: boolean;
   discontinued: boolean;
   tracks_stock: boolean;
@@ -51,11 +56,12 @@ export interface Product {
 export interface CreateProductInput {
   name: string;
   description?: string;
-  productType: string;
-  productGroup?: string;
-  productSubgroup?: string;
-  brand?: string;
-  unit?: string;
+  productTypeId: string;
+  productGroupId?: string;
+  /** `null` explicitly clears it on update (distinct from omitting, which leaves it unchanged) — see ProductFormPage's payload construction. */
+  productSubgroupId?: string | null;
+  brandId?: string;
+  unitId: string;
   active?: boolean;
   discontinued?: boolean;
   tracksStock?: boolean;
diff --git a/apps/core-web/src/routes/AuthenticatedLayout.tsx b/apps/core-web/src/routes/AuthenticatedLayout.tsx
index 999df57..853d4db 100644
--- a/apps/core-web/src/routes/AuthenticatedLayout.tsx
+++ b/apps/core-web/src/routes/AuthenticatedLayout.tsx
@@ -10,28 +10,74 @@ function isNavItemActive(href: string, pathname: string): boolean {
   return pathname === href || pathname.startsWith(`${href}/`);
 }
 
+interface NavItemDef {
+  key: string;
+  label: string;
+  href: string;
+  children?: NavItemDef[];
+}
+
+/**
+ * Computes `active` bottom-up. Leaves are matched with `isNavItemActive`
+ * against their own href; when siblings overlap by prefix (e.g. "Itens"
+ * href=`/products` is a `/`-prefix of "Tipos" href=`/products/types`), only
+ * the most specific (longest href) match is marked active, so navigating to
+ * `/products/types` never also lights up "Itens". A group item (has
+ * `children`) is active exactly when one of its children is — its own
+ * `href` is a placeholder (it renders as an accordion button, never a
+ * direct link) and is never matched on its own.
+ */
+function withActive(items: NavItemDef[], pathname: string): AppShellNavItem[] {
+  const leafMatches = items.filter((item) => !item.children && isNavItemActive(item.href, pathname));
+  const mostSpecific = leafMatches.reduce<NavItemDef | null>(
+    (best, item) => (!best || item.href.length > best.href.length ? item : best),
+    null,
+  );
+
+  return items.map((item) => {
+    if (item.children) {
+      const children = withActive(item.children, pathname);
+      return { ...item, children, active: children.some((child) => child.active) };
+    }
+    return { ...item, active: item === mostSpecific };
+  });
+}
+
+const NAV_ITEM_DEFS: NavItemDef[] = [
+  { key: "dashboard", label: "Painel", href: "/" },
+  { key: "companies", label: "Empresas", href: "/companies" },
+  {
+    key: "products",
+    label: "Produtos",
+    href: "/products",
+    children: [
+      { key: "products-list", label: "Itens", href: "/products" },
+      { key: "products-types", label: "Tipos", href: "/products/types" },
+      { key: "products-groups", label: "Grupos", href: "/products/groups" },
+      { key: "products-brands", label: "Marcas", href: "/products/brands" },
+      { key: "products-units", label: "Unidades", href: "/products/units" },
+    ],
+  },
+  { key: "resellers", label: "Revendas", href: "/resellers" },
+  { key: "leads", label: "CRM", href: "/leads" },
+  { key: "quotes", label: "Ofertas", href: "/quotes" },
+  { key: "client-registrations", label: "Clientes", href: "/client-registrations" },
+  { key: "contracts", label: "Contratos", href: "/contracts" },
+  { key: "documents", label: "Documentos", href: "/documents/templates" },
+  { key: "signatures", label: "Assinaturas", href: "/signatures" },
+  { key: "inventory", label: "Estoque", href: "/inventory/assets" },
+  { key: "billing", label: "Faturamento", href: "/billing/subscriptions" },
+  { key: "fiscal", label: "Fiscal", href: "/fiscal/ncm" },
+  { key: "support", label: "Suporte", href: "/support/tickets" },
+  { key: "hr-timeclock", label: "Ponto Eletrônico", href: "/hr-timeclock/devices" },
+];
+
 export function AuthenticatedLayout() {
   const { user, logout } = useAuth();
   const navigate = useNavigate();
   const location = useLocation();
 
-  const navItems: AppShellNavItem[] = [
-    { key: "dashboard", label: "Painel", href: "/" },
-    { key: "companies", label: "Empresas", href: "/companies" },
-    { key: "products", label: "Produtos", href: "/products" },
-    { key: "resellers", label: "Revendas", href: "/resellers" },
-    { key: "leads", label: "CRM", href: "/leads" },
-    { key: "quotes", label: "Ofertas", href: "/quotes" },
-    { key: "client-registrations", label: "Clientes", href: "/client-registrations" },
-    { key: "contracts", label: "Contratos", href: "/contracts" },
-    { key: "documents", label: "Documentos", href: "/documents/templates" },
-    { key: "signatures", label: "Assinaturas", href: "/signatures" },
-    { key: "inventory", label: "Estoque", href: "/inventory/assets" },
-    { key: "billing", label: "Faturamento", href: "/billing/subscriptions" },
-    { key: "fiscal", label: "Fiscal", href: "/fiscal/ncm" },
-    { key: "support", label: "Suporte", href: "/support/tickets" },
-    { key: "hr-timeclock", label: "Ponto Eletrônico", href: "/hr-timeclock/devices" },
-  ].map((item) => ({ ...item, active: isNavItemActive(item.href, location.pathname) }));
+  const navItems = withActive(NAV_ITEM_DEFS, location.pathname);
 
   async function handleLogout() {
     await logout();
diff --git a/apps/core-web/src/routes/products/ProductFormPage.tsx b/apps/core-web/src/routes/products/ProductFormPage.tsx
index 67ffe0c..05ccc6d 100644
--- a/apps/core-web/src/routes/products/ProductFormPage.tsx
+++ b/apps/core-web/src/routes/products/ProductFormPage.tsx
@@ -2,15 +2,38 @@ import { useEffect, useState } from "react";
 import type { FormEvent } from "react";
 import { Link, useNavigate, useParams } from "react-router-dom";
 import { Alert, Button, Card, Input, PageHeader, Select } from "@eden/ui";
+import type { SelectOption } from "@eden/ui";
 import { SERVICE_TYPES, TARIFF_TYPES } from "@eden/domain-shared";
 import type { ServiceType, TariffType } from "@eden/domain-shared";
 import { createProduct, getProduct, updateProduct } from "../../lib/api/products.js";
 import type { CreateProductInput } from "../../lib/api/products.js";
+import {
+  listBrands,
+  listProductGroups,
+  listProductSubgroups,
+  listProductTypes,
+  listUnits,
+} from "../../lib/api/product-catalogs.js";
+import type {
+  BrandRow,
+  ProductGroupRow,
+  ProductSubgroupRow,
+  ProductTypeRow,
+  UnitRow,
+} from "../../lib/api/product-catalogs.js";
 import { ApiError } from "../../lib/api/http.js";
 import { formatCurrencyBRL } from "../../lib/format.js";
 import { useAuth } from "../../lib/auth/AuthContext.js";
 import { ProductFiscalSection } from "./ProductFiscalSection.js";
 
+/** Only `active` rows populate a dropdown, except the row currently selected on an existing product — kept visible (even if meanwhile deactivated) so editing never silently blanks the field. */
+function toCatalogOptions<T extends { id: string; name: string; active: boolean }>(
+  rows: T[],
+  selectedId: string,
+): SelectOption[] {
+  return rows.filter((row) => row.active || row.id === selectedId).map((row) => ({ value: row.id, label: row.name }));
+}
+
 /** Money fields are edited/stored as integer cents so the mask never loses precision to floating point. */
 function centsToDisplay(cents: number): string {
   return formatCurrencyBRL(cents / 100);
@@ -44,11 +67,11 @@ function CurrencyInput({
 interface ProductFormState {
   name: string;
   description: string;
-  productType: string;
-  productGroup: string;
-  productSubgroup: string;
-  brand: string;
-  unit: string;
+  productTypeId: string;
+  productGroupId: string;
+  productSubgroupId: string;
+  brandId: string;
+  unitId: string;
   active: boolean;
   discontinued: boolean;
   tracksStock: boolean;
@@ -78,11 +101,11 @@ function emptyTariffRatesCents(): ProductFormState["tariffRatesCents"] {
 const EMPTY_FORM: ProductFormState = {
   name: "",
   description: "",
-  productType: "",
-  productGroup: "",
-  productSubgroup: "",
-  brand: "",
-  unit: "",
+  productTypeId: "",
+  productGroupId: "",
+  productSubgroupId: "",
+  brandId: "",
+  unitId: "",
   active: true,
   discontinued: false,
   tracksStock: false,
@@ -128,11 +151,11 @@ export function ProductFormPage() {
         setForm({
           name: product.name,
           description: product.description ?? "",
-          productType: product.product_type,
-          productGroup: product.product_group ?? "",
-          productSubgroup: product.product_subgroup ?? "",
-          brand: product.brand ?? "",
-          unit: product.unit,
+          productTypeId: product.product_type_id,
+          productGroupId: product.product_group_id ?? "",
+          productSubgroupId: product.product_subgroup_id ?? "",
+          brandId: product.brand_id ?? "",
+          unitId: product.unit_id,
           active: product.active,
           discontinued: product.discontinued,
           tracksStock: product.tracks_stock,
@@ -171,6 +194,75 @@ export function ProductFormPage() {
     };
   }, [id, accessToken]);
 
+  const [catalogs, setCatalogs] = useState<{
+    types: ProductTypeRow[];
+    groups: ProductGroupRow[];
+    brands: BrandRow[];
+    units: UnitRow[];
+  } | null>(null);
+  const [catalogError, setCatalogError] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (!accessToken) return;
+    let cancelled = false;
+    Promise.all([listProductTypes(accessToken), listProductGroups(accessToken), listBrands(accessToken), listUnits(accessToken)])
+      .then(([types, groups, brands, units]) => {
+        if (!cancelled) setCatalogs({ types, groups, brands, units });
+      })
+      .catch((err) => {
+        if (!cancelled) {
+          setCatalogError(
+            err instanceof ApiError
+              ? err.message
+              : "Não foi possível carregar os catálogos de tipo/grupo/marca/unidade.",
+          );
+        }
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [accessToken]);
+
+  // Subgrupo é sempre escopado a um grupo — o dropdown só é populado depois
+  // que um grupo é escolhido, refazendo o fetch a cada troca de grupo
+  // (`groupId=<grupo>`), nunca a lista geral de subgrupos.
+  const [subgroups, setSubgroups] = useState<ProductSubgroupRow[]>([]);
+  const [subgroupsLoading, setSubgroupsLoading] = useState(false);
+
+  useEffect(() => {
+    if (!accessToken || !form.productGroupId) {
+      setSubgroups([]);
+      return;
+    }
+    let cancelled = false;
+    setSubgroupsLoading(true);
+    listProductSubgroups(accessToken, { groupId: form.productGroupId })
+      .then((rows) => {
+        if (!cancelled) setSubgroups(rows);
+      })
+      .catch(() => {
+        if (!cancelled) setSubgroups([]);
+      })
+      .finally(() => {
+        if (!cancelled) setSubgroupsLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [accessToken, form.productGroupId]);
+
+  // Se o subgrupo selecionado não pertence (mais) ao grupo atual — porque o
+  // grupo acabou de mudar — limpa a seleção em vez de deixar o formulário
+  // silenciosamente prestes a mandar uma combinação grupo/subgrupo inválida.
+  useEffect(() => {
+    if (subgroupsLoading || !form.productSubgroupId) return;
+    const stillValid = subgroups.some((s) => s.id === form.productSubgroupId);
+    if (!stillValid) {
+      setForm((prev) => ({ ...prev, productSubgroupId: "" }));
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [subgroups, subgroupsLoading]);
+
   function updateField<K extends keyof ProductFormState>(field: K, value: ProductFormState[K]) {
     setForm((prev) => ({ ...prev, [field]: value }));
   }
@@ -184,11 +276,15 @@ export function ProductFormPage() {
       const payload: CreateProductInput = {
         name: form.name.trim(),
         description: toOptional(form.description),
-        productType: form.productType.trim(),
-        productGroup: toOptional(form.productGroup),
-        productSubgroup: toOptional(form.productSubgroup),
-        brand: toOptional(form.brand),
-        unit: toOptional(form.unit),
+        productTypeId: form.productTypeId,
+        productGroupId: toOptional(form.productGroupId),
+        // `null` (not `undefined`) when empty — PATCH treats an omitted
+        // field as "leave unchanged" but `null` as an explicit clear
+        // (needed when the group changed and the old subgroup no longer
+        // applies, per the auto-clear effect above). Harmless for POST.
+        productSubgroupId: form.productSubgroupId.trim() === "" ? null : form.productSubgroupId.trim(),
+        brandId: toOptional(form.brandId),
+        unitId: form.unitId,
         active: form.active,
         discontinued: form.discontinued,
         tracksStock: form.tracksStock,
@@ -226,6 +322,12 @@ export function ProductFormPage() {
     }
   }
 
+  const productTypeOptions = catalogs ? toCatalogOptions(catalogs.types, form.productTypeId) : [];
+  const unitOptions = catalogs ? toCatalogOptions(catalogs.units, form.unitId) : [];
+  const groupOptions = catalogs ? toCatalogOptions(catalogs.groups, form.productGroupId) : [];
+  const brandOptions = catalogs ? toCatalogOptions(catalogs.brands, form.brandId) : [];
+  const subgroupOptions = toCatalogOptions(subgroups, form.productSubgroupId);
+
   return (
     <div>
       <PageHeader
@@ -253,6 +355,12 @@ export function ProductFormPage() {
         </Alert>
       ) : null}
 
+      {catalogError ? (
+        <Alert variant="error" className="mb-4">
+          {catalogError}
+        </Alert>
+      ) : null}
+
       {loading ? (
         <Card>
           <p className="text-sm text-default">Carregando…</p>
@@ -264,24 +372,51 @@ export function ProductFormPage() {
               <div className="sm:col-span-2">
                 <Input label="Nome" value={form.name} onChange={(e) => updateField("name", e.target.value)} required />
               </div>
-              <Input
+              <Select
                 label="Tipo"
-                value={form.productType}
-                onChange={(e) => updateField("productType", e.target.value)}
+                options={productTypeOptions}
+                value={form.productTypeId}
+                onChange={(e) => updateField("productTypeId", e.target.value)}
+                placeholder={catalogs === null ? "Carregando…" : "Selecione um tipo"}
                 required
               />
-              <Input label="Unidade" placeholder="unidade" value={form.unit} onChange={(e) => updateField("unit", e.target.value)} />
-              <Input
+              <Select
+                label="Unidade"
+                options={unitOptions}
+                value={form.unitId}
+                onChange={(e) => updateField("unitId", e.target.value)}
+                placeholder={catalogs === null ? "Carregando…" : "Selecione uma unidade"}
+                required
+              />
+              <Select
                 label="Grupo"
-                value={form.productGroup}
-                onChange={(e) => updateField("productGroup", e.target.value)}
+                options={groupOptions}
+                value={form.productGroupId}
+                onChange={(e) => updateField("productGroupId", e.target.value)}
+                placeholder={catalogs === null ? "Carregando…" : "Nenhum"}
               />
-              <Input
+              <Select
                 label="Subgrupo"
-                value={form.productSubgroup}
-                onChange={(e) => updateField("productSubgroup", e.target.value)}
+                options={subgroupOptions}
+                value={form.productSubgroupId}
+                onChange={(e) => updateField("productSubgroupId", e.target.value)}
+                disabled={!form.productGroupId}
+                placeholder={
+                  !form.productGroupId
+                    ? "Selecione um grupo primeiro"
+                    : subgroupsLoading
+                      ? "Carregando…"
+                      : "Nenhum"
+                }
+                hint={!form.productGroupId ? "Escolha um grupo para habilitar o subgrupo." : undefined}
+              />
+              <Select
+                label="Marca"
+                options={brandOptions}
+                value={form.brandId}
+                onChange={(e) => updateField("brandId", e.target.value)}
+                placeholder={catalogs === null ? "Carregando…" : "Nenhuma"}
               />
-              <Input label="Marca" value={form.brand} onChange={(e) => updateField("brand", e.target.value)} />
               <div className="sm:col-span-2">
                 <label className="mb-1 block text-sm font-semibold text-gray-900" htmlFor="product-description">
                   Descrição
diff --git a/apps/core-web/src/routes/products/ProductsListPage.tsx b/apps/core-web/src/routes/products/ProductsListPage.tsx
index 14deccb..a3dd65d 100644
--- a/apps/core-web/src/routes/products/ProductsListPage.tsx
+++ b/apps/core-web/src/routes/products/ProductsListPage.tsx
@@ -44,7 +44,7 @@ export function ProductsListPage() {
   const columns: Array<TableColumn<Product>> = [
     { key: "code", header: "Código", render: (product) => `#${product.product_code}` },
     { key: "name", header: "Nome", render: (product) => <span className="font-semibold text-title">{product.name}</span> },
-    { key: "type", header: "Tipo", render: (product) => product.product_type },
+    { key: "type", header: "Tipo", render: (product) => product.product_type_name },
     ...PRICE_COLUMNS.map(
       (column): TableColumn<Product> => ({
         key: column.key,
diff --git a/apps/core-web/src/routes/products/catalogs/BrandsListPage.tsx b/apps/core-web/src/routes/products/catalogs/BrandsListPage.tsx
new file mode 100644
index 0000000..6fb5806
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/BrandsListPage.tsx
@@ -0,0 +1,34 @@
+import { PageHeader } from "@eden/ui";
+import { createBrand, listBrands, updateBrand } from "../../../lib/api/product-catalogs.js";
+import type { BrandRow } from "../../../lib/api/product-catalogs.js";
+import { useAuth } from "../../../lib/auth/AuthContext.js";
+import { SimpleCatalogCard } from "./SimpleCatalogCard.js";
+import { useSimpleCatalogCrud } from "./useSimpleCatalogCrud.js";
+
+/** Catálogo de Marca — dropdown opcional em `ProductFormPage.tsx`. */
+export function BrandsListPage() {
+  const { accessToken } = useAuth();
+  const { items, error, formError, creating, togglingId, create, toggleActive } = useSimpleCatalogCrud<BrandRow>(
+    accessToken,
+    { list: listBrands, create: createBrand, update: updateBrand },
+    "Não foi possível carregar as marcas.",
+  );
+
+  return (
+    <div>
+      <PageHeader title="Produtos — Marcas" description="Marca/fabricante do produto. Campo opcional no cadastro de produto." />
+      <SimpleCatalogCard
+        items={items}
+        error={error}
+        formError={formError}
+        creating={creating}
+        togglingId={togglingId}
+        onCreate={create}
+        onToggleActive={toggleActive}
+        namePlaceholder="ex.: Intelbras"
+        createLabel="Adicionar marca"
+        emptyMessage="Nenhuma marca cadastrada."
+      />
+    </div>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/CatalogCreateForm.tsx b/apps/core-web/src/routes/products/catalogs/CatalogCreateForm.tsx
new file mode 100644
index 0000000..bbf73da
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/CatalogCreateForm.tsx
@@ -0,0 +1,52 @@
+import { useState } from "react";
+import type { FormEvent } from "react";
+import { Alert, Button, Input } from "@eden/ui";
+
+/** Inline "add by name" form shared by all five product catalogs (Tipos/Grupos/Subgrupos/Marcas/Unidades) — every one of them creates with a single required field. */
+export function CatalogCreateForm({
+  placeholder,
+  buttonLabel = "Adicionar",
+  creating,
+  error,
+  onCreate,
+}: {
+  placeholder: string;
+  buttonLabel?: string;
+  creating: boolean;
+  error: string | null;
+  onCreate: (name: string) => Promise<boolean>;
+}) {
+  const [name, setName] = useState("");
+
+  async function handleSubmit(event: FormEvent) {
+    event.preventDefault();
+    const trimmed = name.trim();
+    if (!trimmed) return;
+    const created = await onCreate(trimmed);
+    if (created) setName("");
+  }
+
+  return (
+    <div className="mb-4">
+      {error ? (
+        <Alert variant="error" className="mb-3">
+          {error}
+        </Alert>
+      ) : null}
+      <form className="flex flex-col gap-3 sm:flex-row sm:items-end" onSubmit={handleSubmit}>
+        <div className="flex-1">
+          <Input
+            label="Nome"
+            placeholder={placeholder}
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            required
+          />
+        </div>
+        <Button type="submit" loading={creating}>
+          {buttonLabel}
+        </Button>
+      </form>
+    </div>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/CatalogTable.tsx b/apps/core-web/src/routes/products/catalogs/CatalogTable.tsx
new file mode 100644
index 0000000..61597a3
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/CatalogTable.tsx
@@ -0,0 +1,67 @@
+import { Badge, Button, Table } from "@eden/ui";
+import type { TableColumn } from "@eden/ui";
+import type { SimpleCatalogRow } from "../../../lib/api/product-catalogs.js";
+
+/**
+ * Name + status + "Ativar"/"Desativar" toggle — shared row shape for all
+ * five product catalogs. No physical delete anywhere here (backend
+ * convention, see `product-catalogs.ts`), so deactivating is the only
+ * destructive-looking action — gated by a light `window.confirm` (no modal
+ * component exists yet in `@eden/ui`, same tradeoff other catalog screens
+ * in this codebase currently make).
+ */
+export function CatalogTable<T extends SimpleCatalogRow>({
+  items,
+  togglingId,
+  onToggleActive,
+  emptyMessage = "Nenhum registro cadastrado.",
+  extraColumn,
+}: {
+  items: T[];
+  togglingId: string | null;
+  onToggleActive: (item: T) => void;
+  emptyMessage?: string;
+  extraColumn?: TableColumn<T>;
+}) {
+  const columns: Array<TableColumn<T>> = [
+    {
+      key: "name",
+      header: "Nome",
+      render: (item) => <span className="font-semibold text-title">{item.name}</span>,
+    },
+    {
+      key: "status",
+      header: "Status",
+      render: (item) => (
+        <Badge variant={item.active ? "success" : "neutral"}>{item.active ? "Ativo" : "Inativo"}</Badge>
+      ),
+    },
+    ...(extraColumn ? [extraColumn] : []),
+    {
+      key: "actions",
+      header: "",
+      className: "text-right",
+      render: (item) => (
+        <Button
+          variant={item.active ? "danger" : "secondary"}
+          size="sm"
+          type="button"
+          loading={togglingId === item.id}
+          onClick={() => {
+            if (
+              item.active &&
+              !window.confirm(`Desativar "${item.name}"? Ele deixa de aparecer para novos cadastros.`)
+            ) {
+              return;
+            }
+            onToggleActive(item);
+          }}
+        >
+          {item.active ? "Desativar" : "Ativar"}
+        </Button>
+      ),
+    },
+  ];
+
+  return <Table columns={columns} data={items} rowKey={(item) => item.id} emptyMessage={emptyMessage} />;
+}
diff --git a/apps/core-web/src/routes/products/catalogs/GroupSubgroupsPanel.tsx b/apps/core-web/src/routes/products/catalogs/GroupSubgroupsPanel.tsx
new file mode 100644
index 0000000..71d7ce3
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/GroupSubgroupsPanel.tsx
@@ -0,0 +1,56 @@
+import { Alert, Card } from "@eden/ui";
+import { createProductSubgroup, listProductSubgroups, updateProductSubgroup } from "../../../lib/api/product-catalogs.js";
+import type { ProductGroupRow, ProductSubgroupRow } from "../../../lib/api/product-catalogs.js";
+import { useAuth } from "../../../lib/auth/AuthContext.js";
+import { CatalogCreateForm } from "./CatalogCreateForm.js";
+import { CatalogTable } from "./CatalogTable.js";
+import { useSimpleCatalogCrud } from "./useSimpleCatalogCrud.js";
+
+/**
+ * Subgrupos de um grupo específico — não existe rota/entrada de menu
+ * própria para subgrupos (eles sempre pertencem a um grupo), então este
+ * painel só aparece a partir da linha expandida de um grupo em
+ * `ProductGroupsListPage.tsx`. O `groupId` já vem implícito de `group.id`,
+ * então o formulário de criação nunca pede "qual grupo" — impossível
+ * cadastrar um subgrupo órfão por aqui.
+ */
+export function GroupSubgroupsPanel({ group }: { group: ProductGroupRow }) {
+  const { accessToken } = useAuth();
+  const { items, error, formError, creating, togglingId, create, toggleActive } = useSimpleCatalogCrud<ProductSubgroupRow>(
+    accessToken,
+    {
+      list: (token) => listProductSubgroups(token, { groupId: group.id }),
+      create: (name, token) => createProductSubgroup({ name, groupId: group.id }, token),
+      update: updateProductSubgroup,
+    },
+    "Não foi possível carregar os subgrupos.",
+    [group.id],
+  );
+
+  return (
+    <Card title={`Subgrupos — ${group.name}`} className="mt-3">
+      {error ? (
+        <Alert variant="error" className="mb-4">
+          {error}
+        </Alert>
+      ) : null}
+      <CatalogCreateForm
+        placeholder="ex.: Fibra residencial"
+        buttonLabel="Adicionar subgrupo"
+        creating={creating}
+        error={formError}
+        onCreate={create}
+      />
+      {items === null && !error ? (
+        <p className="text-sm text-default">Carregando…</p>
+      ) : (
+        <CatalogTable
+          items={items ?? []}
+          togglingId={togglingId}
+          onToggleActive={toggleActive}
+          emptyMessage="Nenhum subgrupo cadastrado para este grupo."
+        />
+      )}
+    </Card>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/ProductGroupsListPage.tsx b/apps/core-web/src/routes/products/catalogs/ProductGroupsListPage.tsx
new file mode 100644
index 0000000..ed56207
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/ProductGroupsListPage.tsx
@@ -0,0 +1,80 @@
+import { useState } from "react";
+import { Alert, Button, Card, PageHeader } from "@eden/ui";
+import type { TableColumn } from "@eden/ui";
+import { createProductGroup, listProductGroups, updateProductGroup } from "../../../lib/api/product-catalogs.js";
+import type { ProductGroupRow } from "../../../lib/api/product-catalogs.js";
+import { useAuth } from "../../../lib/auth/AuthContext.js";
+import { CatalogCreateForm } from "./CatalogCreateForm.js";
+import { CatalogTable } from "./CatalogTable.js";
+import { GroupSubgroupsPanel } from "./GroupSubgroupsPanel.js";
+import { useSimpleCatalogCrud } from "./useSimpleCatalogCrud.js";
+
+/**
+ * Catálogo de Grupo — dropdown opcional em `ProductFormPage.tsx`. Também é
+ * a única tela que expõe os Subgrupos (sem entrada própria no menu, ver
+ * `AuthenticatedLayout.tsx`): expandir a linha de um grupo abre
+ * `GroupSubgroupsPanel` abaixo da tabela, escopado a esse grupo.
+ */
+export function ProductGroupsListPage() {
+  const { accessToken } = useAuth();
+  const { items, error, formError, creating, togglingId, create, toggleActive } = useSimpleCatalogCrud<ProductGroupRow>(
+    accessToken,
+    { list: listProductGroups, create: createProductGroup, update: updateProductGroup },
+    "Não foi possível carregar os grupos de produto.",
+  );
+
+  const [expandedGroupId, setExpandedGroupId] = useState<string | null>(null);
+  const expandedGroup = (items ?? []).find((group) => group.id === expandedGroupId) ?? null;
+
+  const subgroupsColumn: TableColumn<ProductGroupRow> = {
+    key: "subgroups",
+    header: "",
+    className: "text-right",
+    render: (group) => (
+      <Button
+        variant="secondary"
+        size="sm"
+        type="button"
+        onClick={() => setExpandedGroupId((current) => (current === group.id ? null : group.id))}
+      >
+        {expandedGroupId === group.id ? "Ocultar subgrupos" : "Ver subgrupos"}
+      </Button>
+    ),
+  };
+
+  return (
+    <div>
+      <PageHeader
+        title="Produtos — Grupos"
+        description="Grupo do produto/serviço. Campo opcional no cadastro de produto — expanda um grupo abaixo para gerenciar seus subgrupos."
+      />
+      <Card>
+        {error ? (
+          <Alert variant="error" className="mb-4">
+            {error}
+          </Alert>
+        ) : null}
+        <CatalogCreateForm
+          placeholder="ex.: Banda larga"
+          buttonLabel="Adicionar grupo"
+          creating={creating}
+          error={formError}
+          onCreate={create}
+        />
+        {items === null && !error ? (
+          <p className="text-sm text-default">Carregando…</p>
+        ) : (
+          <CatalogTable
+            items={items ?? []}
+            togglingId={togglingId}
+            onToggleActive={toggleActive}
+            emptyMessage="Nenhum grupo de produto cadastrado."
+            extraColumn={subgroupsColumn}
+          />
+        )}
+      </Card>
+
+      {expandedGroup ? <GroupSubgroupsPanel group={expandedGroup} /> : null}
+    </div>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/ProductTypesListPage.tsx b/apps/core-web/src/routes/products/catalogs/ProductTypesListPage.tsx
new file mode 100644
index 0000000..da5f20b
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/ProductTypesListPage.tsx
@@ -0,0 +1,37 @@
+import { PageHeader } from "@eden/ui";
+import { createProductType, listProductTypes, updateProductType } from "../../../lib/api/product-catalogs.js";
+import type { ProductTypeRow } from "../../../lib/api/product-catalogs.js";
+import { useAuth } from "../../../lib/auth/AuthContext.js";
+import { SimpleCatalogCard } from "./SimpleCatalogCard.js";
+import { useSimpleCatalogCrud } from "./useSimpleCatalogCrud.js";
+
+/** Catálogo de Tipo de produto — usado como dropdown obrigatório em `ProductFormPage.tsx`. Mesma estrutura de `fiscal/NcmListPage.tsx`, adaptada ao padrão "name + active" dos catálogos de produto (`product-catalogs.ts`). */
+export function ProductTypesListPage() {
+  const { accessToken } = useAuth();
+  const { items, error, formError, creating, togglingId, create, toggleActive } = useSimpleCatalogCrud<ProductTypeRow>(
+    accessToken,
+    { list: listProductTypes, create: createProductType, update: updateProductType },
+    "Não foi possível carregar os tipos de produto.",
+  );
+
+  return (
+    <div>
+      <PageHeader
+        title="Produtos — Tipos"
+        description="Tipo do produto/serviço (ex.: Internet, Telefonia, Equipamento). Campo obrigatório no cadastro de produto."
+      />
+      <SimpleCatalogCard
+        items={items}
+        error={error}
+        formError={formError}
+        creating={creating}
+        togglingId={togglingId}
+        onCreate={create}
+        onToggleActive={toggleActive}
+        namePlaceholder="ex.: Internet"
+        createLabel="Adicionar tipo"
+        emptyMessage="Nenhum tipo de produto cadastrado."
+      />
+    </div>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/SimpleCatalogCard.tsx b/apps/core-web/src/routes/products/catalogs/SimpleCatalogCard.tsx
new file mode 100644
index 0000000..5a8bb2e
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/SimpleCatalogCard.tsx
@@ -0,0 +1,60 @@
+import { Alert, Card } from "@eden/ui";
+import type { TableColumn } from "@eden/ui";
+import type { SimpleCatalogRow } from "../../../lib/api/product-catalogs.js";
+import { CatalogCreateForm } from "./CatalogCreateForm.js";
+import { CatalogTable } from "./CatalogTable.js";
+
+/** `Card` wrapping the create-form + table pair — used as-is by Tipos/Marcas/Unidades; Grupos composes the same two pieces manually to also fit the subgrupos panel below. */
+export function SimpleCatalogCard<T extends SimpleCatalogRow>({
+  items,
+  error,
+  formError,
+  creating,
+  togglingId,
+  onCreate,
+  onToggleActive,
+  namePlaceholder,
+  createLabel,
+  emptyMessage,
+  extraColumn,
+}: {
+  items: T[] | null;
+  error: string | null;
+  formError: string | null;
+  creating: boolean;
+  togglingId: string | null;
+  onCreate: (name: string) => Promise<boolean>;
+  onToggleActive: (item: T) => void;
+  namePlaceholder: string;
+  createLabel?: string;
+  emptyMessage?: string;
+  extraColumn?: TableColumn<T>;
+}) {
+  return (
+    <Card>
+      {error ? (
+        <Alert variant="error" className="mb-4">
+          {error}
+        </Alert>
+      ) : null}
+      <CatalogCreateForm
+        placeholder={namePlaceholder}
+        buttonLabel={createLabel}
+        creating={creating}
+        error={formError}
+        onCreate={onCreate}
+      />
+      {items === null && !error ? (
+        <p className="text-sm text-default">Carregando…</p>
+      ) : (
+        <CatalogTable
+          items={items ?? []}
+          togglingId={togglingId}
+          onToggleActive={onToggleActive}
+          emptyMessage={emptyMessage}
+          extraColumn={extraColumn}
+        />
+      )}
+    </Card>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/UnitsListPage.tsx b/apps/core-web/src/routes/products/catalogs/UnitsListPage.tsx
new file mode 100644
index 0000000..8069957
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/UnitsListPage.tsx
@@ -0,0 +1,37 @@
+import { PageHeader } from "@eden/ui";
+import { createUnit, listUnits, updateUnit } from "../../../lib/api/product-catalogs.js";
+import type { UnitRow } from "../../../lib/api/product-catalogs.js";
+import { useAuth } from "../../../lib/auth/AuthContext.js";
+import { SimpleCatalogCard } from "./SimpleCatalogCard.js";
+import { useSimpleCatalogCrud } from "./useSimpleCatalogCrud.js";
+
+/** Catálogo de Unidade — dropdown obrigatório em `ProductFormPage.tsx`. */
+export function UnitsListPage() {
+  const { accessToken } = useAuth();
+  const { items, error, formError, creating, togglingId, create, toggleActive } = useSimpleCatalogCrud<UnitRow>(
+    accessToken,
+    { list: listUnits, create: createUnit, update: updateUnit },
+    "Não foi possível carregar as unidades.",
+  );
+
+  return (
+    <div>
+      <PageHeader
+        title="Produtos — Unidades"
+        description="Unidade de medida do produto (ex.: unidade, mês, ponto). Campo obrigatório no cadastro de produto."
+      />
+      <SimpleCatalogCard
+        items={items}
+        error={error}
+        formError={formError}
+        creating={creating}
+        togglingId={togglingId}
+        onCreate={create}
+        onToggleActive={toggleActive}
+        namePlaceholder="ex.: Unidade"
+        createLabel="Adicionar unidade"
+        emptyMessage="Nenhuma unidade cadastrada."
+      />
+    </div>
+  );
+}
diff --git a/apps/core-web/src/routes/products/catalogs/useSimpleCatalogCrud.ts b/apps/core-web/src/routes/products/catalogs/useSimpleCatalogCrud.ts
new file mode 100644
index 0000000..d5cde2c
--- /dev/null
+++ b/apps/core-web/src/routes/products/catalogs/useSimpleCatalogCrud.ts
@@ -0,0 +1,77 @@
+import { useCallback, useEffect, useState } from "react";
+import { ApiError } from "../../../lib/api/http.js";
+import type { SimpleCatalogRow, UpdateSimpleCatalogInput } from "../../../lib/api/product-catalogs.js";
+
+export interface SimpleCatalogActions<T extends SimpleCatalogRow> {
+  list: (accessToken: string) => Promise<T[]>;
+  create: (name: string, accessToken: string) => Promise<T>;
+  update: (id: string, input: UpdateSimpleCatalogInput, accessToken: string) => Promise<T>;
+}
+
+/**
+ * Shared load/create/toggle-active state machine for the five product
+ * catalogs (Tipos/Grupos/Subgrupos/Marcas/Unidades) — they're all the exact
+ * same shape (name + active, no physical delete, 409 on duplicate name), so
+ * the loading/error/create/toggle logic is written once here instead of
+ * copy-pasted per screen (only the API calls and labels differ).
+ * `deps` lets a scoped catalog (subgroups filtered by a `groupId`) reload
+ * when the scope changes, same as any other `useCallback` dependency.
+ */
+export function useSimpleCatalogCrud<T extends SimpleCatalogRow>(
+  accessToken: string | null,
+  actions: SimpleCatalogActions<T>,
+  loadErrorFallback: string,
+  deps: unknown[] = [],
+) {
+  const [items, setItems] = useState<T[] | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  const [formError, setFormError] = useState<string | null>(null);
+  const [creating, setCreating] = useState(false);
+  const [togglingId, setTogglingId] = useState<string | null>(null);
+
+  const load = useCallback(() => {
+    if (!accessToken) return;
+    setError(null);
+    actions
+      .list(accessToken)
+      .then(setItems)
+      .catch((err) => setError(err instanceof ApiError ? err.message : loadErrorFallback));
+    // `actions` is a plain object of stable module-level functions passed fresh
+    // at each call site — only `accessToken`/`loadErrorFallback`/`deps` actually vary.
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [accessToken, loadErrorFallback, ...deps]);
+
+  useEffect(load, [load]);
+
+  async function create(name: string): Promise<boolean> {
+    if (!accessToken) return false;
+    setFormError(null);
+    setCreating(true);
+    try {
+      await actions.create(name, accessToken);
+      load();
+      return true;
+    } catch (err) {
+      setFormError(err instanceof ApiError ? err.message : "Não foi possível salvar. Tente novamente.");
+      return false;
+    } finally {
+      setCreating(false);
+    }
+  }
+
+  async function toggleActive(item: T): Promise<void> {
+    if (!accessToken) return;
+    setTogglingId(item.id);
+    setError(null);
+    try {
+      await actions.update(item.id, { active: !item.active }, accessToken);
+      load();
+    } catch (err) {
+      setError(err instanceof ApiError ? err.message : "Não foi possível atualizar o status.");
+    } finally {
+      setTogglingId(null);
+    }
+  }
+
+  return { items, error, formError, creating, togglingId, create, toggleActive, reload: load };
+}
diff --git a/docs/progress.md b/docs/progress.md
index a094aae..4408b86 100644
--- a/docs/progress.md
+++ b/docs/progress.md
@@ -617,3 +617,32 @@ Cobertos em `test/signature-envelope-flow.spec.ts` (72/72 antes da leva de rate
 
 ### Pendências
 `DECLINED` (recusa de assinatura) segue sem rota que o produza — reservado no schema, mesma lacuna do legado. `contract_versions`/`contract_amendments` (ADR-0006, adiados desde a leva de trava de edição de contrato) agora estão desbloqueados — o fluxo de assinatura já existe — mas ainda não iniciados. `reseller-web`/`subscriber-web` seguem só com o shell de login — nenhuma tela própria, incluindo nada do módulo de assinatura (fora de escopo desta leva).
+
+---
+
+## Catálogos de Produto (Tipo/Grupo/Subgrupo/Marca/Unidade) — submenu, telas e dropdowns no cadastro de item
+
+Data: 2026-09-17. Usuário pediu: "o menu produtos precisa ter sub menus, aonde cadastraremos os grupos subgrupos marcas e tipo e unidades e dentro do cadastro do item ai essas informações sera apenas dropdown dos cadastros feitos anteriormente." O próprio cabeçalho da migration original de `products` (Fase 2) já previa isso como trabalho futuro ("`product_type` is free text for now... tightening it to a CHECK/lookup table is future work"). Confirmado antes de começar: a tabela `products` só tinha 37 linhas, todas de teste/QA — backfill trivial, sem dado histórico real em risco.
+
+### Backend (agente `eden-commercial`)
+
+Migration `packages/database/migrations/1789694035000_product-catalogs.cjs`: 5 tabelas novas no formato "catálogo simples" (mesmo shape de `fiscal_ncm`/`fiscal_cfop`, sem os campos de sincronização externa — são catálogos 100% manuais) — `product_types`, `product_groups`, `product_subgroups` (FK `group_id → product_groups`, `ON DELETE RESTRICT`), `brands`, `units` (seedada com `'Unidade'`). `products` ganha `product_type_id`/`product_group_id`/`product_subgroup_id`/`brand_id`/`unit_id`, backfill a partir das colunas TEXT antigas (`product_type`/`unit` sempre presentes viram `NOT NULL`), colunas antigas dropadas. `down` reversível de verdade, testado (`migrate` → `migrate:down` → `migrate` de novo).
+
+Endpoints novos (mesmo controller de `products`, padrão de agrupamento do `FiscalController`): `GET/POST /v1/products/{types,groups,brands,units}`, `PATCH .../:id`, `GET/POST /v1/products/subgroups` (`groupId` filtra a listagem, obrigatório no create), `PATCH /v1/products/subgroups/:id`. Leitura aberta a qualquer autenticado, escrita exige `products:edit` — mesma regra já documentada no `ProductsController`. Sem rota de exclusão física em nenhum dos 5 (mesmo padrão dos catálogos fiscais) — `active=false` é o "apagar". `GET /v1/products`/`GET /v1/products/:id` agora fazem JOIN e devolvem `*_name` resolvido ao lado de cada `*_id`. `CreateProductDto`/`UpdateProductDto` trocaram os campos de texto livre por `productTypeId`/`productGroupId`/`productSubgroupId`/`brandId`/`unitId` (UUID), com validação de existência e de consistência subgrupo↔grupo.
+
+**Achado real corrigido diretamente por mim (não delegado)**: o agente de frontend, ao integrar, encontrou e reportou com precisão um buraco de integridade de dados que o `eden-commercial` tinha deixado passar — `PATCH /v1/products/:id` usa `COALESCE` para os campos opcionais, então não existia forma de expressar "limpar este campo" distinta de "não mexer nele" (ambos colapsavam no mesmo parâmetro `NULL` do SQL). Consequência real: editar um produto trocando o Grupo sem tocar no Subgrupo deixava o `product_subgroup_id` antigo órfão, agora inconsistente com o novo grupo, sem nenhuma validação pegando isso (a checagem de consistência só rodava quando `productSubgroupId` vinha no mesmo PATCH). Corrigido em `apps/api/src/products/products.service.ts`/`packages/database/src/repositories/products.ts`: `productSubgroupId: null` agora é uma instrução explícita de "remover" (nunca tenta buscar um subgrupo com id `null`), a validação de update passou a checar o estado **efetivo resultante** (valor do DTO onde informado, senão o valor atual do produto) — então trocar de grupo sem resolver o subgrupo agora é bloqueado com 400 claro em vez de corromper o vínculo silenciosamente — e uma função de repositório dedicada (`clearProductSubgroup`) contorna a limitação do `COALESCE` para esse campo especificamente. Frontend (`ProductFormPage.tsx`) ajustado para mandar `null` explícito (não `undefined`) quando o campo é limpo, e o aviso que o agente tinha colocado como paliativo foi removido — o problema está resolvido de verdade, não só sinalizado. Não estendi o mesmo tratamento a `productGroupId`/`brandId` (limitação de "não dá para limpar de volta pra vazio via PATCH" pré-existente e mais ampla no código, sem risco de invariante quebrada — fora de escopo).
+
+3 testes novos em `apps/api/test/product-catalogs.spec.ts` cobrindo exatamente esse ciclo (bloqueio, limpeza explícita, troca de grupo bem-sucedida depois). Suíte completa: 95/95 verdes (92→95, incluindo os 15 do agente + os 3 meus).
+
+### Frontend (agente `eden-frontend`)
+
+`packages/ui/src/components/AppShell.tsx`: `AppShellNavItem` ganhou `children?` — item com filhos vira accordion (chevron, auto-expande quando a rota atual é de um filho), sem dependência nova. Verificado sem regressão nos 3 apps (`core-web`/`reseller-web`/`subscriber-web` usam o mesmo componente).
+
+Menu "Produtos" ganhou submenu: Itens/Tipos/Grupos/Marcas/Unidades (Subgrupo deliberadamente sem entrada própria — sempre gerenciado a partir da tela de um Grupo específico, via painel "Ver subgrupos", já que subgrupo não existe fora do contexto de um grupo). 4 telas novas em `apps/core-web/src/routes/products/catalogs/` reaproveitando o padrão já usado em `fiscal/NcmListPage.tsx` (lista + formulário inline de criação + toggle ativo/inativo). `ProductFormPage.tsx`: Tipo/Unidade/Grupo/Subgrupo/Marca viraram dropdowns (Subgrupo desabilitado até escolher um Grupo, refaz fetch por `groupId` a cada troca, limpa a seleção se deixar de pertencer ao grupo novo — e agora manda `null` explícito nesse caso, fechando o ciclo com a correção de backend acima).
+
+### Verificação
+
+`pnpm turbo run typecheck build` 28/28 (verificado de forma independente por mim antes e depois da correção do bug de COALESCE). Suíte de testes 95/95. Testado ao vivo via `curl` contra `eden-api`/`eden-core` reais, através do proxy same-origin: criação de tipo/grupo/subgrupo/marca/unidade, criação de produto referenciando os 5, o 400 exato de "grupo incompatível" ao trocar de grupo sem resolver o subgrupo, `productSubgroupId: null` limpando de verdade (confirmado por re-GET), e a troca de grupo funcionando depois de limpo. Rotas `/products/types`, `/products/groups`, `/products/brands`, `/products/units` respondendo 200 pelo proxy (porta 3001). Linhas de teste (`qa-test-*`/`smoke-test-*`) desativadas nos 5 catálogos e no produto de teste ao final — estado ativo ficou limpo (`service`/`telecom` em Tipos, `Unidade` em Unidades, Grupos/Subgrupos/Marcas vazios, prontos para o usuário cadastrar os seus).
+
+### Pendências
+Suítes de teste futuras vão continuar acrescentando linhas `qa-test-*` permanentes nesses 5 catálogos (sem rota de exclusão física, mesmo padrão aceito para os catálogos fiscais) — precisa de desativação manual periódica até (se algum dia for justificado) existir uma rota de exclusão física ou um processo de limpeza dedicado. "Não dá para limpar Grupo/Marca de volta para vazio via PATCH" continua uma limitação pré-existente e mais ampla do padrão `COALESCE` usado em `updateProduct` — não corrigida (sem risco de invariante quebrada, ao contrário do caso do subgrupo).
diff --git a/packages/database/migrations/1789694035000_product-catalogs.cjs b/packages/database/migrations/1789694035000_product-catalogs.cjs
new file mode 100644
index 0000000..48c5094
--- /dev/null
+++ b/packages/database/migrations/1789694035000_product-catalogs.cjs
@@ -0,0 +1,260 @@
+/**
+ * Products bounded context, follow-up slice: turns Tipo/Grupo/Subgrupo/
+ * Marca/Unidade from free TEXT columns on `products` (see
+ * 1788438907074_products.cjs header: "`product_type` is free text for
+ * now ... tightening it to a CHECK/lookup table is future work") into
+ * five first-class, cadastrable catalogs — `product_types`, `product_groups`,
+ * `product_subgroups`, `brands`, `units`. Same "simple catalog" shape
+ * already used by `fiscal_ncm`/`fiscal_cfop` (1788457368744_fiscal.cjs),
+ * minus the `source`/`source_version`/`metadata` sync-log columns: unlike
+ * the fiscal catalogs, these five are never imported from an external
+ * source — they are 100% manually curated by the ERP user, so those
+ * columns would just sit unused.
+ *
+ * `product_subgroups` is the one catalog with an extra shape difference:
+ * it always belongs to a `product_groups` row (`group_id NOT NULL`,
+ * `ON DELETE RESTRICT` — a group in use by a subgroup can't be deleted
+ * out from under it, mirroring every other FK to these catalogs from
+ * `products`). Uniqueness is case-insensitive and, for subgroups, scoped
+ * to the owning group: the same subgroup name may exist under two
+ * different groups, but not twice under the same one.
+ *
+ * Data migration note (verified against the real dev/QA Postgres before
+ * writing this migration): `products` has 37 rows today, all
+ * test/QA data (`qa-test-`/`Live Test` fixtures plus one manual "Link
+ * Dedicado 100Mbps" row). `product_group`/`product_subgroup`/`brand` are
+ * empty on every row; `unit` is always `'unidade'`; `product_type` is only
+ * ever `'service'` or `'telecom'`. Given that, the backfill below is
+ * intentionally the simplest thing that is still correct — no need for a
+ * sophisticated historical-data-preservation strategy for data that never
+ * existed. `product_groups`/`product_subgroups` backfill is best-effort:
+ * since the group->subgroup relationship never existed in the legacy TEXT
+ * columns (there was no FK to reconstruct it from), any distinct
+ * `product_subgroup` value found without a way to attribute it to a
+ * specific group is simply left unmigrated — the affected product's new
+ * `product_subgroup_id` stays NULL rather than inventing a placeholder
+ * "generic" group the user never asked for. In practice this branch is
+ * moot today (no environment has a populated `product_subgroup`), but the
+ * decision is documented here for whoever re-reads this after real data
+ * exists.
+ *
+ * `product_type_id`/`unit_id` end up NOT NULL (mirroring the TEXT columns
+ * they replace, which were both `NOT NULL`); `product_group_id`/
+ * `product_subgroup_id`/`brand_id` stay nullable, exactly like the TEXT
+ * columns they replace were optional.
+ */
+
+exports.shorthands = undefined;
+
+exports.up = (pgm) => {
+  pgm.sql(`
+    -- =====================================================================
+    -- product_types / product_groups / brands / units — identical "simple
+    -- catalog" shape, manually curated (no source/source_version/metadata,
+    -- unlike the fiscal catalogs — these are never imported).
+    -- =====================================================================
+    CREATE TABLE product_types (
+      id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      name        TEXT NOT NULL,
+      active      BOOLEAN NOT NULL DEFAULT true,
+      created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      created_by  UUID REFERENCES users(id),
+      updated_by  UUID REFERENCES users(id)
+    );
+    COMMENT ON TABLE product_types IS
+      'Catálogo de Tipos de produto (eden.md §2 §1.1) — antes TEXT livre em products.product_type. Cadastro manual, sem exclusão física (active=false é o "apagar"). Leitura aberta a qualquer autenticado, escrita exige products:edit.';
+    CREATE UNIQUE INDEX idx_product_types_name ON product_types (lower(name));
+    CREATE INDEX idx_product_types_active ON product_types (active);
+    CREATE TRIGGER trg_product_types_updated_at BEFORE UPDATE ON product_types
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+    CREATE TABLE product_groups (
+      id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      name        TEXT NOT NULL,
+      active      BOOLEAN NOT NULL DEFAULT true,
+      created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      created_by  UUID REFERENCES users(id),
+      updated_by  UUID REFERENCES users(id)
+    );
+    COMMENT ON TABLE product_groups IS
+      'Catálogo de Grupos de produto — antes TEXT livre em products.product_group. Cadastro manual, sem exclusão física.';
+    CREATE UNIQUE INDEX idx_product_groups_name ON product_groups (lower(name));
+    CREATE INDEX idx_product_groups_active ON product_groups (active);
+    CREATE TRIGGER trg_product_groups_updated_at BEFORE UPDATE ON product_groups
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+    CREATE TABLE product_subgroups (
+      id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      group_id    UUID NOT NULL REFERENCES product_groups(id) ON DELETE RESTRICT,
+      name        TEXT NOT NULL,
+      active      BOOLEAN NOT NULL DEFAULT true,
+      created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      created_by  UUID REFERENCES users(id),
+      updated_by  UUID REFERENCES users(id)
+    );
+    COMMENT ON TABLE product_subgroups IS
+      'Catálogo de Subgrupos de produto — antes TEXT livre em products.product_subgroup. Sempre pertence a um grupo (group_id NOT NULL, ON DELETE RESTRICT). Nome único case-insensitivo por grupo, não globalmente: o mesmo nome pode existir em grupos diferentes.';
+    CREATE UNIQUE INDEX idx_product_subgroups_group_name ON product_subgroups (group_id, lower(name));
+    CREATE INDEX idx_product_subgroups_active ON product_subgroups (active);
+    CREATE INDEX idx_product_subgroups_group ON product_subgroups (group_id);
+    CREATE TRIGGER trg_product_subgroups_updated_at BEFORE UPDATE ON product_subgroups
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+    CREATE TABLE brands (
+      id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      name        TEXT NOT NULL,
+      active      BOOLEAN NOT NULL DEFAULT true,
+      created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      created_by  UUID REFERENCES users(id),
+      updated_by  UUID REFERENCES users(id)
+    );
+    COMMENT ON TABLE brands IS
+      'Catálogo de Marcas — antes TEXT livre em products.brand. Cadastro manual, sem exclusão física.';
+    CREATE UNIQUE INDEX idx_brands_name ON brands (lower(name));
+    CREATE INDEX idx_brands_active ON brands (active);
+    CREATE TRIGGER trg_brands_updated_at BEFORE UPDATE ON brands
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+    CREATE TABLE units (
+      id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      name        TEXT NOT NULL,
+      active      BOOLEAN NOT NULL DEFAULT true,
+      created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
+      created_by  UUID REFERENCES users(id),
+      updated_by  UUID REFERENCES users(id)
+    );
+    COMMENT ON TABLE units IS
+      'Catálogo de Unidades de medida — antes TEXT livre em products.unit (default legado ''unidade''). Cadastro manual, sem exclusão física.';
+    CREATE UNIQUE INDEX idx_units_name ON units (lower(name));
+    CREATE INDEX idx_units_active ON units (active);
+    CREATE TRIGGER trg_units_updated_at BEFORE UPDATE ON units
+      FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+    INSERT INTO units (name) VALUES ('Unidade') ON CONFLICT (lower(name)) DO NOTHING;
+
+    -- =====================================================================
+    -- products: swap the 5 free-TEXT columns for FK columns into the
+    -- catalogs above. Nullable at first on purpose — tightened to NOT NULL
+    -- (product_type_id/unit_id only) after the backfill below.
+    -- =====================================================================
+    ALTER TABLE products
+      ADD COLUMN product_type_id     UUID REFERENCES product_types(id),
+      ADD COLUMN product_group_id    UUID REFERENCES product_groups(id) ON DELETE RESTRICT,
+      ADD COLUMN product_subgroup_id UUID REFERENCES product_subgroups(id) ON DELETE RESTRICT,
+      ADD COLUMN brand_id            UUID REFERENCES brands(id) ON DELETE RESTRICT,
+      ADD COLUMN unit_id             UUID REFERENCES units(id) ON DELETE RESTRICT;
+
+    INSERT INTO product_types (name)
+      SELECT DISTINCT product_type FROM products
+      WHERE product_type IS NOT NULL AND product_type <> ''
+      ON CONFLICT DO NOTHING;
+
+    INSERT INTO brands (name)
+      SELECT DISTINCT brand FROM products
+      WHERE brand IS NOT NULL AND brand <> ''
+      ON CONFLICT DO NOTHING;
+
+    INSERT INTO units (name)
+      SELECT DISTINCT unit FROM products
+      WHERE unit IS NOT NULL AND unit <> ''
+      ON CONFLICT DO NOTHING;
+
+    -- Best-effort only — see migration header for why group/subgroup
+    -- relationship isn't (and can't be) reconstructed from legacy data.
+    INSERT INTO product_groups (name)
+      SELECT DISTINCT product_group FROM products
+      WHERE product_group IS NOT NULL AND product_group <> ''
+      ON CONFLICT DO NOTHING;
+
+    UPDATE products SET product_type_id = pt.id
+      FROM product_types pt WHERE lower(pt.name) = lower(products.product_type);
+
+    UPDATE products SET brand_id = b.id
+      FROM brands b WHERE lower(b.name) = lower(products.brand);
+
+    UPDATE products SET unit_id = u.id
+      FROM units u WHERE lower(u.name) = lower(products.unit);
+
+    UPDATE products SET product_group_id = pg.id
+      FROM product_groups pg WHERE lower(pg.name) = lower(products.product_group);
+
+    -- product_subgroup_id intentionally left NULL here: no legacy data
+    -- ever populated products.product_subgroup with a resolvable group,
+    -- so there is nothing safe to backfill (see migration header).
+
+    ALTER TABLE products
+      DROP COLUMN product_type,
+      DROP COLUMN product_group,
+      DROP COLUMN product_subgroup,
+      DROP COLUMN brand,
+      DROP COLUMN unit;
+
+    ALTER TABLE products
+      ALTER COLUMN product_type_id SET NOT NULL,
+      ALTER COLUMN unit_id SET NOT NULL;
+
+    CREATE INDEX idx_products_product_type_id ON products (product_type_id);
+    CREATE INDEX idx_products_product_group_id ON products (product_group_id);
+    CREATE INDEX idx_products_product_subgroup_id ON products (product_subgroup_id);
+    CREATE INDEX idx_products_brand_id ON products (brand_id);
+    CREATE INDEX idx_products_unit_id ON products (unit_id);
+  `);
+};
+
+exports.down = (pgm) => {
+  pgm.sql(`
+    ALTER TABLE products
+      ADD COLUMN product_type     TEXT,
+      ADD COLUMN product_group    TEXT,
+      ADD COLUMN product_subgroup TEXT,
+      ADD COLUMN brand            TEXT,
+      ADD COLUMN unit             TEXT;
+
+    UPDATE products SET product_type = pt.name
+      FROM product_types pt WHERE pt.id = products.product_type_id;
+
+    UPDATE products SET product_group = pg.name
+      FROM product_groups pg WHERE pg.id = products.product_group_id;
+
+    UPDATE products SET product_subgroup = psg.name
+      FROM product_subgroups psg WHERE psg.id = products.product_subgroup_id;
+
+    UPDATE products SET brand = b.name
+      FROM brands b WHERE b.id = products.brand_id;
+
+    UPDATE products SET unit = u.name
+      FROM units u WHERE u.id = products.unit_id;
+
+    UPDATE products SET unit = 'unidade' WHERE unit IS NULL;
+    UPDATE products SET product_type = 'service' WHERE product_type IS NULL;
+
+    ALTER TABLE products
+      ALTER COLUMN product_type SET NOT NULL,
+      ALTER COLUMN unit SET NOT NULL,
+      ALTER COLUMN unit SET DEFAULT 'unidade';
+
+    DROP INDEX IF EXISTS idx_products_product_type_id;
+    DROP INDEX IF EXISTS idx_products_product_group_id;
+    DROP INDEX IF EXISTS idx_products_product_subgroup_id;
+    DROP INDEX IF EXISTS idx_products_brand_id;
+    DROP INDEX IF EXISTS idx_products_unit_id;
+
+    ALTER TABLE products
+      DROP COLUMN product_type_id,
+      DROP COLUMN product_group_id,
+      DROP COLUMN product_subgroup_id,
+      DROP COLUMN brand_id,
+      DROP COLUMN unit_id;
+
+    DROP TABLE IF EXISTS product_subgroups;
+    DROP TABLE IF EXISTS product_groups;
+    DROP TABLE IF EXISTS product_types;
+    DROP TABLE IF EXISTS brands;
+    DROP TABLE IF EXISTS units;
+  `);
+};
diff --git a/packages/database/src/index.ts b/packages/database/src/index.ts
index 9de6af4..83aa1b7 100644
--- a/packages/database/src/index.ts
+++ b/packages/database/src/index.ts
@@ -6,6 +6,7 @@ export * as sessionsRepo from "./repositories/sessions.js";
 export * as auditRepo from "./repositories/audit.js";
 export * as companiesRepo from "./repositories/companies.js";
 export * as productsRepo from "./repositories/products.js";
+export * as productCatalogsRepo from "./repositories/product-catalogs.js";
 export * as resellersRepo from "./repositories/resellers.js";
 export * as quotesRepo from "./repositories/quotes.js";
 export * as contractsRepo from "./repositories/contracts.js";
@@ -34,6 +35,26 @@ export {
 export type * from "./repositories/types.js";
 export type { Company } from "./repositories/companies.js";
 export type { Product, CreateProductInput, UpdateProductInput } from "./repositories/products.js";
+export type {
+  SimpleCatalogRow,
+  CreateSimpleCatalogEntryInput,
+  UpdateSimpleCatalogEntryInput,
+  ProductType,
+  CreateProductTypeInput,
+  UpdateProductTypeInput,
+  ProductGroup,
+  CreateProductGroupInput,
+  UpdateProductGroupInput,
+  ProductSubgroup,
+  CreateProductSubgroupInput,
+  UpdateProductSubgroupInput,
+  Brand,
+  CreateBrandInput,
+  UpdateBrandInput,
+  Unit,
+  CreateUnitInput,
+  UpdateUnitInput,
+} from "./repositories/product-catalogs.js";
 export type { Reseller, CreateResellerInput, UpdateResellerInput } from "./repositories/resellers.js";
 export type {
   Lead,
diff --git a/packages/database/src/repositories/product-catalogs.ts b/packages/database/src/repositories/product-catalogs.ts
new file mode 100644
index 0000000..137345d
--- /dev/null
+++ b/packages/database/src/repositories/product-catalogs.ts
@@ -0,0 +1,219 @@
+import { query } from "../pool.js";
+
+/**
+ * Products bounded context — Tipo/Grupo/Subgrupo/Marca/Unidade catalogs
+ * (1789694035000_product-catalogs.cjs). Same "simple catalog" shape as
+ * fiscal_ncm/fiscal_cfop (see repositories/fiscal.ts) minus the sync-log
+ * columns: these five catalogs are always manually curated, never
+ * imported. No physical delete anywhere here — `active=false` is the
+ * "apagar", same convention as the fiscal catalogs.
+ */
+
+export interface SimpleCatalogRow {
+  id: string;
+  name: string;
+  active: boolean;
+  created_at: Date;
+  updated_at: Date;
+  created_by: string | null;
+  updated_by: string | null;
+}
+
+export interface CreateSimpleCatalogEntryInput {
+  name: string;
+  active?: boolean;
+  createdBy?: string | null;
+}
+
+export interface UpdateSimpleCatalogEntryInput {
+  name?: string;
+  active?: boolean;
+  updatedBy?: string | null;
+}
+
+function buildCreateQuery(table: string) {
+  return `INSERT INTO ${table} (name, active, created_by, updated_by)
+     VALUES ($1, COALESCE($2, true), $3, $3)
+     RETURNING *`;
+}
+
+function buildUpdateQuery(table: string) {
+  return `UPDATE ${table} SET
+       name = COALESCE($2, name),
+       active = COALESCE($3, active),
+       updated_by = COALESCE($4, updated_by)
+     WHERE id = $1
+     RETURNING *`;
+}
+
+async function listSimpleCatalog(table: string, includeInactive: boolean): Promise<SimpleCatalogRow[]> {
+  const { rows } = await query<SimpleCatalogRow>(
+    includeInactive
+      ? `SELECT * FROM ${table} ORDER BY name ASC`
+      : `SELECT * FROM ${table} WHERE active = true ORDER BY name ASC`,
+  );
+  return rows;
+}
+
+async function getSimpleCatalogById(table: string, id: string): Promise<SimpleCatalogRow | null> {
+  const { rows } = await query<SimpleCatalogRow>(`SELECT * FROM ${table} WHERE id = $1`, [id]);
+  return rows[0] ?? null;
+}
+
+async function createSimpleCatalogEntry(
+  table: string,
+  input: CreateSimpleCatalogEntryInput,
+): Promise<SimpleCatalogRow> {
+  const { rows } = await query<SimpleCatalogRow>(buildCreateQuery(table), [
+    input.name,
+    input.active ?? null,
+    input.createdBy ?? null,
+  ]);
+  const row = rows[0];
+  if (!row) throw new Error(`failed to create ${table} row`);
+  return row;
+}
+
+async function updateSimpleCatalogEntry(
+  table: string,
+  id: string,
+  input: UpdateSimpleCatalogEntryInput,
+): Promise<SimpleCatalogRow | null> {
+  const { rows } = await query<SimpleCatalogRow>(buildUpdateQuery(table), [
+    id,
+    input.name ?? null,
+    input.active ?? null,
+    input.updatedBy ?? null,
+  ]);
+  return rows[0] ?? null;
+}
+
+// ===========================================================================
+// product_types
+// ===========================================================================
+
+export type ProductType = SimpleCatalogRow;
+export type CreateProductTypeInput = CreateSimpleCatalogEntryInput;
+export type UpdateProductTypeInput = UpdateSimpleCatalogEntryInput;
+
+export const listProductTypes = (includeInactive = false) =>
+  listSimpleCatalog("product_types", includeInactive);
+export const getProductTypeById = (id: string) => getSimpleCatalogById("product_types", id);
+export const createProductType = (input: CreateProductTypeInput) =>
+  createSimpleCatalogEntry("product_types", input);
+export const updateProductType = (id: string, input: UpdateProductTypeInput) =>
+  updateSimpleCatalogEntry("product_types", id, input);
+
+// ===========================================================================
+// product_groups
+// ===========================================================================
+
+export type ProductGroup = SimpleCatalogRow;
+export type CreateProductGroupInput = CreateSimpleCatalogEntryInput;
+export type UpdateProductGroupInput = UpdateSimpleCatalogEntryInput;
+
+export const listProductGroups = (includeInactive = false) =>
+  listSimpleCatalog("product_groups", includeInactive);
+export const getProductGroupById = (id: string) => getSimpleCatalogById("product_groups", id);
+export const createProductGroup = (input: CreateProductGroupInput) =>
+  createSimpleCatalogEntry("product_groups", input);
+export const updateProductGroup = (id: string, input: UpdateProductGroupInput) =>
+  updateSimpleCatalogEntry("product_groups", id, input);
+
+// ===========================================================================
+// product_subgroups — always scoped to a group_id
+// ===========================================================================
+
+export interface ProductSubgroup extends SimpleCatalogRow {
+  group_id: string;
+}
+
+export interface CreateProductSubgroupInput extends CreateSimpleCatalogEntryInput {
+  groupId: string;
+}
+
+export type UpdateProductSubgroupInput = UpdateSimpleCatalogEntryInput;
+
+export async function listProductSubgroups(
+  groupId?: string,
+  includeInactive = false,
+): Promise<ProductSubgroup[]> {
+  const conditions: string[] = [];
+  const params: unknown[] = [];
+  if (groupId) {
+    params.push(groupId);
+    conditions.push(`group_id = $${params.length}`);
+  }
+  if (!includeInactive) {
+    conditions.push("active = true");
+  }
+  const where = conditions.length ? `WHERE ${conditions.join(" AND ")}` : "";
+  const { rows } = await query<ProductSubgroup>(
+    `SELECT * FROM product_subgroups ${where} ORDER BY name ASC`,
+    params,
+  );
+  return rows;
+}
+
+export async function getProductSubgroupById(id: string): Promise<ProductSubgroup | null> {
+  const { rows } = await query<ProductSubgroup>("SELECT * FROM product_subgroups WHERE id = $1", [id]);
+  return rows[0] ?? null;
+}
+
+export async function createProductSubgroup(
+  input: CreateProductSubgroupInput,
+): Promise<ProductSubgroup> {
+  const { rows } = await query<ProductSubgroup>(
+    `INSERT INTO product_subgroups (group_id, name, active, created_by, updated_by)
+     VALUES ($1, $2, COALESCE($3, true), $4, $4)
+     RETURNING *`,
+    [input.groupId, input.name, input.active ?? null, input.createdBy ?? null],
+  );
+  const row = rows[0];
+  if (!row) throw new Error("failed to create product_subgroups row");
+  return row;
+}
+
+export async function updateProductSubgroup(
+  id: string,
+  input: UpdateProductSubgroupInput,
+): Promise<ProductSubgroup | null> {
+  const { rows } = await query<ProductSubgroup>(
+    `UPDATE product_subgroups SET
+       name = COALESCE($2, name),
+       active = COALESCE($3, active),
+       updated_by = COALESCE($4, updated_by)
+     WHERE id = $1
+     RETURNING *`,
+    [id, input.name ?? null, input.active ?? null, input.updatedBy ?? null],
+  );
+  return rows[0] ?? null;
+}
+
+// ===========================================================================
+// brands
+// ===========================================================================
+
+export type Brand = SimpleCatalogRow;
+export type CreateBrandInput = CreateSimpleCatalogEntryInput;
+export type UpdateBrandInput = UpdateSimpleCatalogEntryInput;
+
+export const listBrands = (includeInactive = false) => listSimpleCatalog("brands", includeInactive);
+export const getBrandById = (id: string) => getSimpleCatalogById("brands", id);
+export const createBrand = (input: CreateBrandInput) => createSimpleCatalogEntry("brands", input);
+export const updateBrand = (id: string, input: UpdateBrandInput) =>
+  updateSimpleCatalogEntry("brands", id, input);
+
+// ===========================================================================
+// units
+// ===========================================================================
+
+export type Unit = SimpleCatalogRow;
+export type CreateUnitInput = CreateSimpleCatalogEntryInput;
+export type UpdateUnitInput = UpdateSimpleCatalogEntryInput;
+
+export const listUnits = (includeInactive = false) => listSimpleCatalog("units", includeInactive);
+export const getUnitById = (id: string) => getSimpleCatalogById("units", id);
+export const createUnit = (input: CreateUnitInput) => createSimpleCatalogEntry("units", input);
+export const updateUnit = (id: string, input: UpdateUnitInput) =>
+  updateSimpleCatalogEntry("units", id, input);
diff --git a/packages/database/src/repositories/products.ts b/packages/database/src/repositories/products.ts
index c47d1e8..8147222 100644
--- a/packages/database/src/repositories/products.ts
+++ b/packages/database/src/repositories/products.ts
@@ -1,6 +1,12 @@
 import { query } from "../pool.js";
 import type { ServiceType, TariffRates } from "@eden/domain-shared";
 
+/**
+ * `*_name` columns are resolved via JOIN against the product_types/
+ * product_groups/product_subgroups/brands/units catalogs
+ * (1789694035000_product-catalogs.cjs) — never re-fetched by ID
+ * separately, so a list/detail response is always self-contained.
+ */
 export interface Product {
   id: string;
   created_at: Date;
@@ -9,11 +15,16 @@ export interface Product {
   product_code: number;
   name: string;
   description: string | null;
-  product_type: string;
-  product_group: string | null;
-  product_subgroup: string | null;
-  brand: string | null;
-  unit: string;
+  product_type_id: string;
+  product_type_name: string;
+  product_group_id: string | null;
+  product_group_name: string | null;
+  product_subgroup_id: string | null;
+  product_subgroup_name: string | null;
+  brand_id: string | null;
+  brand_name: string | null;
+  unit_id: string;
+  unit_name: string;
   active: boolean;
   discontinued: boolean;
   tracks_stock: boolean;
@@ -33,28 +44,44 @@ export interface Product {
   has_ldi: boolean;
 }
 
+const SELECT_PRODUCT = `
+  SELECT
+    p.*,
+    pt.name AS product_type_name,
+    pg.name AS product_group_name,
+    psg.name AS product_subgroup_name,
+    b.name AS brand_name,
+    u.name AS unit_name
+  FROM products p
+  JOIN product_types pt ON pt.id = p.product_type_id
+  LEFT JOIN product_groups pg ON pg.id = p.product_group_id
+  LEFT JOIN product_subgroups psg ON psg.id = p.product_subgroup_id
+  LEFT JOIN brands b ON b.id = p.brand_id
+  JOIN units u ON u.id = p.unit_id
+`;
+
 export async function listProducts(includeInactive = false): Promise<Product[]> {
   const { rows } = await query<Product>(
     includeInactive
-      ? "SELECT * FROM products ORDER BY created_at ASC"
-      : "SELECT * FROM products WHERE active = true ORDER BY created_at ASC",
+      ? `${SELECT_PRODUCT} ORDER BY p.created_at ASC`
+      : `${SELECT_PRODUCT} WHERE p.active = true ORDER BY p.created_at ASC`,
   );
   return rows;
 }
 
 export async function getProductById(id: string): Promise<Product | null> {
-  const { rows } = await query<Product>("SELECT * FROM products WHERE id = $1", [id]);
+  const { rows } = await query<Product>(`${SELECT_PRODUCT} WHERE p.id = $1`, [id]);
   return rows[0] ?? null;
 }
 
 export interface CreateProductInput {
   name: string;
   description?: string | null;
-  productType: string;
-  productGroup?: string | null;
-  productSubgroup?: string | null;
-  brand?: string | null;
-  unit?: string;
+  productTypeId: string;
+  productGroupId?: string | null;
+  productSubgroupId?: string | null;
+  brandId?: string | null;
+  unitId: string;
   active?: boolean;
   discontinued?: boolean;
   tracksStock?: boolean;
@@ -76,27 +103,27 @@ export interface CreateProductInput {
 }
 
 export async function createProduct(input: CreateProductInput): Promise<Product> {
-  const { rows } = await query<Product>(
+  const { rows } = await query<{ id: string }>(
     `INSERT INTO products (
-       name, description, product_type, product_group, product_subgroup, brand, unit,
+       name, description, product_type_id, product_group_id, product_subgroup_id, brand_id, unit_id,
        active, discontinued, tracks_stock, tracks_serial, tracks_asset_tag, tracks_mac,
        price_0, price_12, price_24, price_36, price_48, impl_unit_price,
        service_type, metered, minutes_allowance, tariff_rates, has_ldi, created_by
      ) VALUES (
-       $1,$2,$3,$4,$5,$6,COALESCE($7,'unidade'),
+       $1,$2,$3,$4,$5,$6,$7,
        COALESCE($8,true),COALESCE($9,false),COALESCE($10,false),COALESCE($11,false),COALESCE($12,false),COALESCE($13,false),
        $14,$15,$16,$17,$18,COALESCE($19,0),
        COALESCE($20,'STFC'),COALESCE($21,false),$22,COALESCE($23,'{}'::jsonb),COALESCE($24,false),$25
      )
-     RETURNING *`,
+     RETURNING id`,
     [
       input.name,
       input.description ?? null,
-      input.productType,
-      input.productGroup ?? null,
-      input.productSubgroup ?? null,
-      input.brand ?? null,
-      input.unit ?? null,
+      input.productTypeId,
+      input.productGroupId ?? null,
+      input.productSubgroupId ?? null,
+      input.brandId ?? null,
+      input.unitId,
       input.active ?? null,
       input.discontinued ?? null,
       input.tracksStock ?? null,
@@ -117,7 +144,9 @@ export async function createProduct(input: CreateProductInput): Promise<Product>
       input.createdBy ?? null,
     ],
   );
-  const product = rows[0];
+  const id = rows[0]?.id;
+  if (!id) throw new Error("failed to create product");
+  const product = await getProductById(id);
   if (!product) throw new Error("failed to create product");
   return product;
 }
@@ -125,15 +154,15 @@ export async function createProduct(input: CreateProductInput): Promise<Product>
 export type UpdateProductInput = Partial<Omit<CreateProductInput, "createdBy">>;
 
 export async function updateProduct(id: string, input: UpdateProductInput): Promise<Product | null> {
-  const { rows } = await query<Product>(
+  const { rows } = await query<{ id: string }>(
     `UPDATE products SET
        name = COALESCE($2, name),
        description = COALESCE($3, description),
-       product_type = COALESCE($4, product_type),
-       product_group = COALESCE($5, product_group),
-       product_subgroup = COALESCE($6, product_subgroup),
-       brand = COALESCE($7, brand),
-       unit = COALESCE($8, unit),
+       product_type_id = COALESCE($4, product_type_id),
+       product_group_id = COALESCE($5, product_group_id),
+       product_subgroup_id = COALESCE($6, product_subgroup_id),
+       brand_id = COALESCE($7, brand_id),
+       unit_id = COALESCE($8, unit_id),
        active = COALESCE($9, active),
        discontinued = COALESCE($10, discontinued),
        tracks_stock = COALESCE($11, tracks_stock),
@@ -152,16 +181,16 @@ export async function updateProduct(id: string, input: UpdateProductInput): Prom
        tariff_rates = COALESCE($24, tariff_rates),
        has_ldi = COALESCE($25, has_ldi)
      WHERE id = $1
-     RETURNING *`,
+     RETURNING id`,
     [
       id,
       input.name ?? null,
       input.description ?? null,
-      input.productType ?? null,
-      input.productGroup ?? null,
-      input.productSubgroup ?? null,
-      input.brand ?? null,
-      input.unit ?? null,
+      input.productTypeId ?? null,
+      input.productGroupId ?? null,
+      input.productSubgroupId ?? null,
+      input.brandId ?? null,
+      input.unitId ?? null,
       input.active ?? null,
       input.discontinued ?? null,
       input.tracksStock ?? null,
@@ -181,5 +210,17 @@ export async function updateProduct(id: string, input: UpdateProductInput): Prom
       input.hasLdi ?? null,
     ],
   );
-  return rows[0] ?? null;
+  if (!rows[0]) return null;
+  return getProductById(id);
+}
+
+/**
+ * `updateProduct`'s COALESCE-based SET can't express "set to NULL" for a
+ * nullable column — a null parameter reads as "unchanged", same as
+ * omitting the field. An explicit subgroup removal needs its own
+ * statement; called by ProductsService right after `updateProduct` when
+ * `productSubgroupId === null` was explicitly requested.
+ */
+export async function clearProductSubgroup(id: string): Promise<void> {
+  await query(`UPDATE products SET product_subgroup_id = NULL WHERE id = $1`, [id]);
 }
diff --git a/packages/ui/src/components/AppShell.tsx b/packages/ui/src/components/AppShell.tsx
index 5511d75..83612b8 100644
--- a/packages/ui/src/components/AppShell.tsx
+++ b/packages/ui/src/components/AppShell.tsx
@@ -1,3 +1,4 @@
+import { useEffect, useState } from "react";
 import type { ComponentType, ReactNode } from "react";
 import { cn } from "../utils/cn.js";
 
@@ -7,6 +8,13 @@ export interface AppShellNavItem {
   href: string;
   icon?: ReactNode;
   active?: boolean;
+  /**
+   * When present (even if empty), this item renders as an expandable
+   * accordion group instead of a direct link — `href` is then only a
+   * placeholder (typically duplicated by the first child) and is never
+   * navigated to directly. Only one level deep is supported.
+   */
+  children?: AppShellNavItem[];
 }
 
 interface NavLinkRenderProps {
@@ -41,6 +49,74 @@ function DefaultLink({ href, className, children }: NavLinkRenderProps) {
   );
 }
 
+const NAV_LINK_CLASSES = "flex items-center gap-2 rounded-md px-3 py-2 text-sm font-medium transition-colors duration-150";
+const NAV_LINK_ACTIVE_CLASSES = "bg-dark text-white";
+const NAV_LINK_INACTIVE_CLASSES = "text-gray-900 hover:bg-light-700 hover:text-primary";
+
+/**
+ * A nav item with `children` — an accordion button that expands/collapses a
+ * sublist. `item.active` is expected to already reflect "this item or one of
+ * its descendants matches the current route" (computed by the consuming
+ * app, which owns routing) — used both to highlight the button while closed
+ * and to auto-open the sublist so the active child is never hidden inside a
+ * collapsed group.
+ */
+function NavGroup({
+  item,
+  LinkComponent,
+}: {
+  item: AppShellNavItem;
+  LinkComponent: ComponentType<NavLinkRenderProps>;
+}) {
+  const [open, setOpen] = useState(Boolean(item.active));
+
+  useEffect(() => {
+    if (item.active) setOpen(true);
+  }, [item.active]);
+
+  return (
+    <div>
+      <button
+        type="button"
+        onClick={() => setOpen((prev) => !prev)}
+        aria-expanded={open}
+        className={cn("w-full", NAV_LINK_CLASSES, item.active ? NAV_LINK_ACTIVE_CLASSES : NAV_LINK_INACTIVE_CLASSES)}
+      >
+        {item.icon}
+        <span className="flex-1 text-left">{item.label}</span>
+        <svg
+          aria-hidden="true"
+          viewBox="0 0 20 20"
+          fill="none"
+          className={cn("size-3.5 shrink-0 transition-transform duration-150", open ? "rotate-180" : "")}
+        >
+          <path
+            d="M5 7.5L10 12.5L15 7.5"
+            stroke="currentColor"
+            strokeWidth="1.6"
+            strokeLinecap="round"
+            strokeLinejoin="round"
+          />
+        </svg>
+      </button>
+      {open ? (
+        <div className="ms-3 mt-1 flex flex-col gap-1 border-s border-border-color ps-3">
+          {(item.children ?? []).map((child) => (
+            <LinkComponent
+              key={child.key}
+              href={child.href}
+              className={cn(NAV_LINK_CLASSES, child.active ? NAV_LINK_ACTIVE_CLASSES : NAV_LINK_INACTIVE_CLASSES)}
+            >
+              {child.icon}
+              <span>{child.label}</span>
+            </LinkComponent>
+          ))}
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
 /**
  * Visually inspired by the DreamsERP theme's sidebar/topbar
  * (react/src/components/common-sidebar, common-header) — sidebar with
@@ -65,21 +141,20 @@ export function AppShell({
           <span className="text-sm font-bold text-title">{appName}</span>
         </div>
         <nav className="flex flex-1 flex-col gap-1 overflow-y-auto p-3" aria-label="Navegação principal">
-          {navItems.map((item) => (
-            <LinkComponent
-              key={item.key}
-              href={item.href}
-              className={cn(
-                "flex items-center gap-2 rounded-md px-3 py-2 text-sm font-medium transition-colors duration-150",
-                item.active
-                  ? "bg-dark text-white"
-                  : "text-gray-900 hover:bg-light-700 hover:text-primary",
-              )}
-            >
-              {item.icon}
-              <span>{item.label}</span>
-            </LinkComponent>
-          ))}
+          {navItems.map((item) =>
+            item.children ? (
+              <NavGroup key={item.key} item={item} LinkComponent={LinkComponent} />
+            ) : (
+              <LinkComponent
+                key={item.key}
+                href={item.href}
+                className={cn(NAV_LINK_CLASSES, item.active ? NAV_LINK_ACTIVE_CLASSES : NAV_LINK_INACTIVE_CLASSES)}
+              >
+                {item.icon}
+                <span>{item.label}</span>
+              </LinkComponent>
+            ),
+          )}
         </nav>
       </aside>