docs: update documentation to OKF v0.1 format

docs/architecture/frontend-structure.md

@@ -3,7 +3,7 @@ type: architecture
 title: Frontend Structure
 description: Angular routes, components, services, guards, and interceptors.
 tags: [architecture, frontend, angular]
-timestamp: 2026-07-21T14:43:00Z
+timestamp: 2026-07-21T15:05:00Z
 ---
 
 # Routes
@@ -14,7 +14,8 @@ Routes live in `frontend/src/app/app.routes.ts`:
 |--------------|----------------------------------|---------------|----------------------------------------|
 | `/bootstrap` | `SetupCreateAdminComponent`      | —             | Rendered only when `initialized === false`. Non-dismissible modal overlay. |
 | `/login`     | `LoginComponent`                 | —             | Standard login form.                   |
-| `/`          | `HomeComponent`                  | `authGuard`   | Requires auth + initialized.           |
+| `/`          | `HomeComponent` (shell)          | `authGuard`   | Requires auth + initialized. Hosts a `<router-outlet>` for child routes. |
+| `/admin`     | `AdminUsersComponent`            | `adminGuard`  | Child of `/`; requires `role === 'admin'`. |
 | `**`         | Redirect to `/`                  | —             | Wildcard fallback.                     |
 
 # Components
@@ -25,7 +26,8 @@ All components are standalone (no NgModules). Each component imports
 | Component              | Path                                                            | Purpose                                         |
 |------------------------|-----------------------------------------------------------------|-------------------------------------------------|
 | `AppComponent`         | `frontend/src/app/app.component.ts`                             | Root; renders `<router-outlet>` and calls `BootstrapService.load()`. |
-| `HomeComponent`        | `frontend/src/app/features/home/home.component.ts`              | Landing page shown after auth.                  |
+| `HomeComponent`        | `frontend/src/app/features/home/home.component.ts`              | Authenticated shell with header, conditional admin nav, and `<router-outlet>` for children. |
+| `AdminUsersComponent`  | `frontend/src/app/features/admin/admin-users.component.ts`      | Admin-only user list rendered inside the home shell. |
 | `LoginComponent`       | `frontend/src/app/features/auth/login.component.ts`            | Username/password form.                         |
 | `SetupCreateAdminComponent` | `frontend/src/app/features/setup/setup-create-admin.component.ts` | First-admin bootstrap modal (non-dismissible, typed reactive forms). |
 
@@ -35,12 +37,15 @@ All components are standalone (no NgModules). Each component imports
 |---------------------|---------------------------------------------------------------|-----------------------------------------------------------|
 | `AuthService`       | `frontend/src/app/core/services/auth.service.ts`              | Signal-backed access token + current user.                |
 | `BootstrapService`  | `frontend/src/app/core/services/bootstrap.service.ts`         | Fetches `/api/v1/bootstrap`, applies theme tokens to CSS. |
+| `AdminService`      | `frontend/src/app/core/services/admin.service.ts`             | `GET /api/v1/admin/users` (typed `AdminUser[]`).          |
 
 # Guards and interceptors
 
 | Symbol              | Path                                                          | Purpose                                                   |
 |---------------------|---------------------------------------------------------------|-----------------------------------------------------------|
 | `authGuard`         | `frontend/src/app/core/guards/auth.guard.ts`                  | Redirects to `/bootstrap` when uninitialized, `/login` when not authenticated. |
+| `adminGuard`        | `frontend/src/app/core/guards/admin.guard.ts`                 | Delegates to `decideAdminGuard` (pure). Redirects to `/bootstrap`, `/login`, or `/` based on state; allows only admins. |
+| `decideAdminGuard`  | `frontend/src/app/core/guards/admin.guard.decision.ts`        | Pure decision function: returns `{kind:'allow'}` or `{kind:'redirect', path}`. |
 | `authInterceptor`   | `frontend/src/app/core/interceptors/auth.interceptor.ts`      | Attaches `Authorization: Bearer <accessToken>` header.    |
 | `csrfInterceptor`   | `frontend/src/app/core/interceptors/csrf.interceptor.ts`      | Attaches `X-CSRF-Token` header on POST/PUT/PATCH/DELETE. |
 
@@ -62,8 +67,23 @@ Both interceptors are wired in `frontend/src/main.ts` via
 5. The `authGuard` reads `BootstrapService.initialized()` and either
    allows navigation or redirects to `/bootstrap`.
 
+# Home shell flow
+
+After successful auth, `HomeComponent` renders a thin shell layout:
+
+1. The header (`shell-header`) shows the page title and signed-in
+   identity.
+2. When `shouldShowAdminNav({isAuthenticated, role})` returns `true`
+   (see `frontend/src/app/features/home/home.shell.ts`) the admin nav
+   link (`data-testid="nav-admin"`) is rendered.
+3. Child routes (e.g. `/admin` → `AdminUsersComponent`) render into the
+   shell's `<router-outlet>`.
+4. `AdminUsersComponent` calls `AdminService.listUsers()` on init;
+   loading, error, and the rendered list are exposed as Angular signals.
+
 # See also
 
 - [System Overview](/architecture/overview.md)
 - [Backend Module Map](/architecture/backend-modules.md)
 - [First-Run Bootstrap](/guides/bootstrap.md)
+- [Admin Shell & User Management](/guides/admin-shell.md)

docs/architecture/key-files.md

@@ -3,7 +3,7 @@ type: architecture
 title: Key Files Index
 description: One-line responsibility for every important source file in the repository.
 tags: [architecture, index, key-files]
-timestamp: 2026-07-21T14:43:00Z
+timestamp: 2026-07-21T15:05:00Z
 ---
 
 # Backend
@@ -107,17 +107,22 @@ timestamp: 2026-07-21T14:43:00Z
 | `frontend/src/index.html`                           | Root HTML shell.                                                               |
 | `frontend/src/styles.css`                           | Global styles consuming theme CSS custom properties.                           |
 | `frontend/src/app/app.component.ts`                 | Root component; triggers bootstrap on init.                                    |
-| `frontend/src/app/app.routes.ts`                    | Angular route table.                                                           |
+| `frontend/src/app/app.routes.ts`                    | Angular route table (declares `/` shell with `adminGuard`-gated `/admin` child). |
 | `frontend/src/app/core/services/auth.service.ts`    | Signal store for access token + current user.                                 |
 | `frontend/src/app/core/services/bootstrap.service.ts` | Fetches `/api/v1/bootstrap` and applies theme tokens to CSS.                  |
+| `frontend/src/app/core/services/admin.service.ts`  | `GET /api/v1/admin/users` returning `AdminUser[]`.                            |
 | `frontend/src/app/core/guards/auth.guard.ts`        | `CanActivateFn` checking init + auth.                                          |
+| `frontend/src/app/core/guards/admin.guard.ts`       | `CanActivateFn` for admin-only routes; delegates to `decideAdminGuard`.        |
+| `frontend/src/app/core/guards/admin.guard.decision.ts` | Pure decision function for the admin guard (returns `allow` / `redirect`). |
 | `frontend/src/app/core/interceptors/auth.interceptor.ts` | Attaches Bearer header.                                                     |
 | `frontend/src/app/core/interceptors/csrf.interceptor.ts` | Attaches `X-CSRF-Token` on unsafe methods.                                  |
 | `frontend/src/app/features/auth/login.component.ts` | Login form.                                                                    |
+| `frontend/src/app/features/admin/admin-users.component.ts` | Admin-only user list (signals: `loading`, `error`, `users`).           |
 | `frontend/src/app/features/setup/setup-create-admin.component.ts` | First-admin modal overlay (non-dismissible; typed reactive form). |
 | `frontend/src/app/features/setup/setup-create-admin.service.ts` | POSTs to `/api/v1/setup/create-admin` and tags the result with the error code. |
 | `frontend/src/app/features/setup/setup-create-admin.validators.ts` | Standalone `passwordMatchValidator` group-level reactive form validator. |
-| `frontend/src/app/features/home/home.component.ts`  | Landing page after auth.                                                       |
+| `frontend/src/app/features/home/home.component.ts`  | Authenticated shell: header + conditional admin nav + `<router-outlet>`.       |
+| `frontend/src/app/features/home/home.shell.ts`      | Pure `shouldShowAdminNav({isAuthenticated, role})` predicate (unit-tested).   |
 
 # Tests
 
@@ -125,6 +130,8 @@ timestamp: 2026-07-21T14:43:00Z
 |------------------------------------------------|--------------------------------------------------------------------------------|
 | `tests/backend/*.spec.ts` (18 suites)         | Jest tests for backend modules, CSRF, OpenAPI 3.1, migrations, rate limits.   |
 | `tests/frontend/theme.spec.ts`                 | Jest test for theme token application.                                         |
+| `tests/frontend/admin-shell.spec.ts`          | Unit tests for `shouldShowAdminNav` predicate.                                 |
+| `tests/frontend/admin-navigation.spec.ts`      | Tests for admin guard decision + nav-link rendering.                           |
 | `tests/backend/csrf-client.ts`                 | Test helper for CSRF flow.                                                     |
 | `tests/backend/db-helper.ts`                   | Test helper for spinning up an isolated DB.                                    |
 

docs/architecture/overview.md

@@ -3,7 +3,7 @@ type: architecture
 title: System Overview
 description: High-level layout of the HIPCTF monorepo (NestJS API + Angular SPA) and how they communicate.
 tags: [architecture, backend, frontend, overview]
-timestamp: 2026-07-21T14:18:00Z
+timestamp: 2026-07-21T15:05:00Z
 ---
 
 # Overview
@@ -73,7 +73,7 @@ Browser  ──HTTPS──▶  NestJS process (PORT, default 3000)
 | Concern        | Backend                                              | Frontend                                    |
 |----------------|------------------------------------------------------|---------------------------------------------|
 | Authentication | `JwtAuthGuard` (global) + `AuthGuard('jwt')` strategy | `AuthService` signal + `authInterceptor`    |
-| Authorization  | `AdminGuard` + `@Roles('admin')` decorator          | `authGuard` route guard                     |
+| Authorization  | `AdminGuard` + `@Roles('admin')` decorator          | `authGuard` for `/`, `adminGuard` for `/admin` (delegates to pure `decideAdminGuard`) |
 | CSRF           | `CsrfMiddleware` (skips `/api/v1/auth/login` and `/api/v1/auth/register-first-admin`) | `csrfInterceptor` reads `csrf` cookie |
 | Errors         | `ApiError` → `GlobalExceptionFilter` returns `{code, message, details, path, timestamp}` | Components display `error?.error?.message` |
 | Config         | `envSchema` (zod) + `validateEnv`                     | None (consumed via bootstrap)              |

docs/guides/admin-shell.md

@@ -0,0 +1,100 @@
+---
+type: guide
+title: Admin Shell & User Management
+description: How an authenticated admin navigates the post-login shell and reaches the admin user-management area.
+tags: [guide, admin, shell, navigation, tester]
+timestamp: 2026-07-21T15:05:00Z
+---
+
+# When this view is available
+
+The admin shell is the post-login UI for users with `role === 'admin'`.
+It is gated by:
+
+| Layer            | File                                                                                       | Check                              |
+|------------------|--------------------------------------------------------------------------------------------|------------------------------------|
+| Client route     | `frontend/src/app/app.routes.ts`                                                          | `/admin` uses `adminGuard`.        |
+| Client nav link  | `frontend/src/app/features/home/home.component.ts`                                         | Renders only when `showAdminNav()` is true. |
+| Client predicate | `frontend/src/app/features/home/home.shell.ts` (`shouldShowAdminNav`)                      | `isAuthenticated && role === 'admin'`. |
+| Server route     | `backend/src/modules/admin/admin.controller.ts` (mounted under `@UseGuards(AdminGuard)` + `@Roles('admin')`) | Requires admin JWT. |
+
+A non-admin (or unauthenticated) request to `/admin` is intercepted by
+the client guard *before* any HTTP call is made, so the page never
+renders.
+
+# How to access (tester steps)
+
+1. Ensure the instance is initialized (`/api/v1/bootstrap` returns
+   `initialized: true`). If not, follow [First-Run Bootstrap](/guides/bootstrap.md).
+2. Sign in as a user with `role === 'admin'` via `/login`.
+3. The browser lands on `/` and renders the **Home shell** with a
+   header containing the page title and a sign-in status line.
+4. Click the **Admin** nav link (`data-testid="nav-admin"`) in the
+   shell header, or navigate directly to `/admin`.
+5. The admin area renders inside the shell:
+   - **Heading:** "Admin area"
+   - **Loading state:** `Loading users...` (`data-testid="admin-loading"`)
+     while the GET is in flight.
+   - **User list:** an unordered list (`data-testid="admin-user-list"`)
+     showing one `<li>` per user with the username in bold and the role
+     in parentheses, e.g. `root (admin)`.
+   - **Error state:** a red message (`data-testid="admin-error"`) when
+     the request fails (e.g. backend down or auth expired).
+
+# Expected behavior
+
+| User role            | Visiting `/admin`                                       |
+|----------------------|---------------------------------------------------------|
+| Unauthenticated      | Redirected to `/login` by `adminGuard`.                 |
+| Authenticated player | Redirected to `/` by `adminGuard`.                      |
+| Authenticated admin  | Page renders, fetches `GET /api/v1/admin/users`, lists users. |
+
+* When `BootstrapService.initialized()` is still `false` the guard
+  redirects to `/bootstrap` instead of `/login`, so the first admin
+  flow is honored.
+* The Admin nav link is hidden for non-admin users — there is no
+  visible UI affordance to reach `/admin` without the role.
+* The list endpoint uses the existing `authInterceptor` + `csrfInterceptor`,
+  so no extra plumbing is required.
+
+# Visual elements
+
+| Element              | Selector                          | Purpose                                      |
+|----------------------|-----------------------------------|----------------------------------------------|
+| Shell header         | `.shell-header`                   | Page title + signed-in identity.             |
+| Admin nav link       | `[data-testid="nav-admin"]`       | RouterLink to `/admin`; shown to admins only. |
+| Shell body           | `.shell-body`                     | Holds `<router-outlet>` for child routes.    |
+| Admin heading        | `h2` inside `.admin-area`         | "Admin area".                                |
+| Loading message      | `[data-testid="admin-loading"]`   | "Loading users...".                          |
+| Error message        | `[data-testid="admin-error"]`     | Red text; renders `error().error.message` or fallback. |
+| User list            | `[data-testid="admin-user-list"]` | Renders one `<li>` per `AdminUser`.          |
+
+# Architecture map
+
+| Step | Where                                              | What happens                                                          |
+|------|----------------------------------------------------|-----------------------------------------------------------------------|
+| 1    | `frontend/src/app/app.routes.ts`                   | `/` is a parent route with `authGuard`; `/admin` child uses `adminGuard` + lazy-loads `AdminUsersComponent`. |
+| 2    | `frontend/src/app/core/guards/admin.guard.ts`     | `adminGuard` calls `decideAdminGuard(...)` with bootstrap + auth state. |
+| 3    | `frontend/src/app/core/guards/admin.guard.decision.ts` | Pure function returning `{kind: 'allow'}` or `{kind: 'redirect', path}`. |
+| 4    | `frontend/src/app/features/home/home.component.ts` | Shell template renders header, conditional nav (`*ngIf="showAdminNav()"`), and `<router-outlet>`. |
+| 5    | `frontend/src/app/features/home/home.shell.ts`     | `shouldShowAdminNav({isAuthenticated, role})` predicate (exported and unit-tested). |
+| 6    | `frontend/src/app/features/admin/admin-users.component.ts` | On init, calls `AdminService.listUsers()` and populates signals (`loading`, `error`, `users`). |
+| 7    | `frontend/src/app/core/services/admin.service.ts` | `GET /api/v1/admin/users` (credentials included); typed as `AdminUser[]`. |
+| 8    | `backend/src/modules/admin/admin.controller.ts`   | `AdminController.list` returns `AdminService.listUsers({limit, cursor, role})`. |
+
+# Notes
+
+* The shell deliberately keeps `HomeComponent` as a thin layout owner —
+  child routes (currently just `/admin`) render into its
+  `<router-outlet>`. New admin sub-pages can be added as additional
+  children without changing the shell.
+* The guard decision function (`decideAdminGuard`) is a pure module so
+  it is straightforward to unit-test without Angular DI. See
+  `tests/frontend/admin-shell.spec.ts` and `tests/frontend/admin-navigation.spec.ts`.
+
+# See also
+
+- [First-Run Bootstrap](/guides/bootstrap.md)
+- [Frontend Structure](/architecture/frontend-structure.md)
+- [REST API Overview](/api/rest-overview.md)
+- [Admin Endpoints](/api/admin.md)

docs/guides/bootstrap.md

@@ -3,7 +3,7 @@ type: guide
 title: First-Run Bootstrap
 description: How a fresh HIPCTF instance is initialized by the very first administrator.
 tags: [guide, bootstrap, first-admin, onboarding, tester]
-timestamp: 2026-07-21T14:43:00Z
+timestamp: 2026-07-21T15:05:00Z
 ---
 
 # When this flow runs
@@ -46,7 +46,7 @@ bypassed.
 
 * On success the modal disappears, the app stores the access token via
   `AuthService.setSession`, calls `BootstrapService.markInitialized()`,
-  and navigates to `/challenges`.
+  and navigates to `/admin` (see [Admin Shell & User Management](/guides/admin-shell.md)).
 * On `USERNAME_TAKEN` the form shows a red alert:
   `"Username already exists"`. The **Retry** button is intentionally
   hidden because the username must be changed first.
@@ -84,7 +84,7 @@ The modal **cannot** be dismissed by the user:
 | 4    | `SetupCreateAdminService.ensureCsrf()`                 | Preflights `GET /api/v1/auth/csrf` so the response sets the `csrf` cookie. |
 | 5    | `POST /api/v1/setup/create-admin`                      | `SetupService.createAdmin` runs in a TypeORM transaction; creates the user with `role='admin'`; mints session via `AuthService.createSession`. |
 | 6    | `setRefreshCookie`                                     | Sets the `rt` HttpOnly cookie.                                          |
-| 7    | Component on success                                   | `AuthService.setSession`, `BootstrapService.markInitialized()`, navigate to `/challenges`. |
+| 7    | Component on success                                   | `AuthService.setSession`, `BootstrapService.markInitialized()`, navigate to `/admin`. |
 | 8    | Subsequent `authGuard` checks                          | `initialized === true`; require auth instead.                          |
 
 # What the operator sees after init
@@ -94,8 +94,10 @@ Once the first admin exists, `/api/v1/bootstrap` returns
 
 * Skips `/bootstrap` entirely.
 * Routes unauthenticated users to `/login`.
-* Routes authenticated users to `/` (Home) which itself redirects to
+* Routes authenticated admins to `/` (the Home shell) and renders the
-  `/challenges` once admin features are wired.
+  admin nav link. The first admin lands directly on the user list at
+  `/admin` (see [Admin Shell & User Management](/guides/admin-shell.md)).
+* Routes authenticated players to `/` without the admin nav link.
 
 # See also
 

docs/index.md

@@ -52,6 +52,8 @@ they need.
 
 * [First-Run Bootstrap](/guides/bootstrap.md) - How a fresh instance is
   initialized by the very first admin via the non-dismissible modal.
+* [Admin Shell & User Management](/guides/admin-shell.md) - How admins
+  navigate the post-login shell and reach the user-management area.
 * [Theming](/guides/theming.md) - How themes are loaded and applied.
 * [Event Window](/guides/event-window.md) - How the event window and live
   countdown work.