# Seller Management — Architecture Diagrams

Companion diagrams for [ADR-011](adr/ADR-011-optional-seller-management-module.md).
Architecture only — no UI, no backend, no business logic exists yet.

## 1. Hierarchy

```mermaid
graph TD
    Platform["Platform<br/>(one Angular runtime)"]
    Marketplace["Marketplace (tenant)<br/>always present · backend-resolved from Host<br/>ADR-001"]
    SellerA["Seller A<br/>optional, 0..N"]
    SellerB["Seller B<br/>optional, 0..N"]
    NoSeller["No sellers<br/>(default — most marketplaces today)"]

    Platform --> Marketplace
    Marketplace --> SellerA
    Marketplace --> SellerB
    Marketplace -.default state.-> NoSeller
```

Marketplace is the only primary tenant. Seller is a child scope of exactly
one marketplace — never a sibling tier, never resolved on its own.

## 2. Bootstrap module gate

```mermaid
graph LR
    Request["GET /bootstrap"] --> Backend["Backend resolves:<br/>tenant (always)<br/>seller (only if applicable)"]
    Backend --> Bootstrap["BootstrapConfig"]
    Bootstrap --> ModulesCheck{"modules.sellerManagement.enabled?"}
    ModulesCheck -->|false / absent, default| Identical["Behavior identical to today.<br/>No new routes, menus, or API calls."]
    ModulesCheck -->|true| Available["Seller-aware behavior becomes available<br/>(not built yet — future work, own ADR)"]
    Bootstrap -.optional field.-> SellerField["BootstrapConfig.seller<br/>(SellerConfig, present only when<br/>backend resolved a seller scope)"]
```

The frontend performs no resolution — it reads whatever the backend already
decided into `BootstrapConfig.modules` / `BootstrapConfig.seller`, exactly
the same discipline as tenant resolution (ADR-001) and feature-flag gating
(ADR-009).

## 3. Type contracts introduced (this ADR only)

```mermaid
classDiagram
    class BootstrapConfig {
        +TenantConfig tenant
        +PlatformModulesConfig? modules
        +SellerConfig? seller
        ...existing fields unchanged
    }
    class PlatformModulesConfig {
        +SellerManagementModuleConfig sellerManagement
    }
    class SellerManagementModuleConfig {
        +boolean enabled
    }
    class SellerConfig {
        +UUID id
        +UUID marketplaceId
        +string slug
        +string name
        +string defaultLocale
        +string[] supportedLocales
    }
    BootstrapConfig --> PlatformModulesConfig
    BootstrapConfig --> SellerConfig
    PlatformModulesConfig --> SellerManagementModuleConfig
```

`modules` and `seller` are both optional on `BootstrapConfig`. Every field
already on `BootstrapConfig` is untouched.