docs: Implementierungsplan für restricted-Rolle

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/superpowers/plans/2026-03-27-restricted-rolle.md

@@ -0,0 +1,672 @@
+# Restricted-Rolle Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Neue Rolle `"restricted"` einführen — Nutzer dürfen Medien hochladen und Playlist bearbeiten, aber keine Anzeige-Steuerung (An/Aus, Zeitplan, Override) vornehmen.
+
+**Architecture:** Neuer Rollenwert im bestehenden `users.role`-String-Feld. Neue Middleware `RequireNotRestricted` blockt restricted-User mit 403 auf Steuerungs-Endpunkten. Templates erhalten `UserRole string` und blenden Steuerungs-UI per `{{if ne .UserRole "restricted"}}` aus.
+
+**Tech Stack:** Go 1.25, `net/http`, `html/template`, pgx v5, Bulma CSS
+
+---
+
+## Geänderte Dateien
+
+| Datei | Änderung |
+|-------|----------|
+| `server/backend/internal/httpapi/middleware.go` | `RequireNotRestricted` hinzufügen |
+| `server/backend/internal/httpapi/middleware_test.go` | NEU — Tests für `RequireNotRestricted` |
+| `server/backend/internal/store/auth.go` | `CreateScreenUser` bekommt `role`-Parameter; `ListScreenUsers` schließt restricted ein |
+| `server/backend/internal/httpapi/manage/ui.go` | `HandleCreateScreenUser` liest `role` aus Form; beide Handler übergeben `UserRole` ans Template |
+| `server/backend/internal/httpapi/router.go` | Neue Middleware-Kombinatoren `authScreenControl` + `authOnlyControl`; Steuerungs-Routen umverdrahten |
+| `server/backend/internal/httpapi/manage/templates.go` | Admin-Formular: Rolle-Dropdown; User-Liste: Rollen-Badge; Übersicht + Detailseite: UI-Guards |
+
+---
+
+## Task 1: `RequireNotRestricted` Middleware + Tests
+
+**Files:**
+- Modify: `server/backend/internal/httpapi/middleware.go`
+- Create: `server/backend/internal/httpapi/middleware_test.go`
+
+- [ ] **Step 1: Failing-Test schreiben**
+
+Erstelle `server/backend/internal/httpapi/middleware_test.go`:
+
+```go
+package httpapi_test
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.az-it.net/az/morz-infoboard/server/backend/internal/httpapi"
+	"git.az-it.net/az/morz-infoboard/server/backend/internal/reqcontext"
+	"git.az-it.net/az/morz-infoboard/server/backend/internal/store"
+)
+
+func userCtx(role string) context.Context {
+	return reqcontext.WithUser(context.Background(), &store.User{Role: role})
+}
+
+func TestRequireNotRestricted_blocks_restricted(t *testing.T) {
+	req := httptest.NewRequest(http.MethodPost, "/", nil).WithContext(userCtx("restricted"))
+	rr := httptest.NewRecorder()
+	httpapi.RequireNotRestricted(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		t.Fatal("should not be called")
+	})).ServeHTTP(rr, req)
+	if rr.Code != http.StatusForbidden {
+		t.Fatalf("expected 403, got %d", rr.Code)
+	}
+}
+
+func TestRequireNotRestricted_allows_screen_user(t *testing.T) {
+	req := httptest.NewRequest(http.MethodPost, "/", nil).WithContext(userCtx("screen_user"))
+	rr := httptest.NewRecorder()
+	called := false
+	httpapi.RequireNotRestricted(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		called = true
+	})).ServeHTTP(rr, req)
+	if !called {
+		t.Fatal("expected next to be called")
+	}
+}
+
+func TestRequireNotRestricted_allows_admin(t *testing.T) {
+	req := httptest.NewRequest(http.MethodPost, "/", nil).WithContext(userCtx("admin"))
+	rr := httptest.NewRecorder()
+	called := false
+	httpapi.RequireNotRestricted(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		called = true
+	})).ServeHTTP(rr, req)
+	if !called {
+		t.Fatal("expected next to be called")
+	}
+}
+
+func TestRequireNotRestricted_allows_no_user(t *testing.T) {
+	req := httptest.NewRequest(http.MethodPost, "/", nil)
+	rr := httptest.NewRecorder()
+	called := false
+	httpapi.RequireNotRestricted(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		called = true
+	})).ServeHTTP(rr, req)
+	if !called {
+		t.Fatal("no user in context — RequireAuth handles that, this middleware passes through")
+	}
+}
+```
+
+- [ ] **Step 2: Test laufen lassen — muss fehlschlagen**
+
+```bash
+cd server/backend && go test ./internal/httpapi/ -run TestRequireNotRestricted -v
+```
+
+Erwartetes Ergebnis: Compile-Fehler `undefined: httpapi.RequireNotRestricted`
+
+- [ ] **Step 3: Implementation in `middleware.go` hinzufügen**
+
+In `server/backend/internal/httpapi/middleware.go` direkt nach `RequireAdmin` (nach Zeile 56) einfügen:
+
+```go
+// RequireNotRestricted is middleware that blocks users with role "restricted".
+// It must be chained after RequireAuth (so a user is present in context).
+// On failure it responds with 403 Forbidden.
+func RequireNotRestricted(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		user := UserFromContext(r.Context())
+		if user != nil && user.Role == "restricted" {
+			http.Error(w, "Forbidden", http.StatusForbidden)
+			return
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+```
+
+- [ ] **Step 4: Tests laufen lassen — müssen bestehen**
+
+```bash
+cd server/backend && go test ./internal/httpapi/ -run TestRequireNotRestricted -v
+```
+
+Erwartetes Ergebnis: 4 Tests PASS
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add server/backend/internal/httpapi/middleware.go \
+        server/backend/internal/httpapi/middleware_test.go
+git commit -m "feat(auth): RequireNotRestricted middleware"
+```
+
+---
+
+## Task 2: Store — `CreateScreenUser` role-Parameter + `ListScreenUsers` Fix
+
+**Files:**
+- Modify: `server/backend/internal/store/auth.go`
+
+- [ ] **Step 1: Failing-Test schreiben**
+
+Es gibt noch keine Unit-Tests für den Store (Integration-Tests laufen gegen echte DB, die im CI nicht verfügbar ist). Stattdessen sichern wir die Signatur über den Compiler ab — wir schreiben zunächst den Test in einem separaten Compile-Check-Paket NICHT, sondern prüfen direkt via `go build`.
+
+Ersetze `CreateScreenUser` in `server/backend/internal/store/auth.go`:
+
+Aktuell (Zeile 162–187):
+```go
+func (s *AuthStore) CreateScreenUser(ctx context.Context, tenantSlug, username, password string) (*User, error) {
+    ...
+    row := s.pool.QueryRow(ctx,
+        `insert into users(tenant_id, username, password_hash, role)
+         values($1, $2, $3, 'screen_user')
+         returning id, tenant_id, $4::text, username, password_hash, role, created_at`,
+        tenantID, username, string(hash), tenantSlug)
+```
+
+Ersetze durch:
+
+```go
+// CreateScreenUser creates a new user with the given role for the tenant
+// identified by tenantSlug. role must be "screen_user" or "restricted".
+// The password is hashed with bcrypt (cost 12).
+// Returns pgx.ErrNoRows if the tenant does not exist, or a wrapped error if
+// the username is already taken (unique constraint violation).
+func (s *AuthStore) CreateScreenUser(ctx context.Context, tenantSlug, username, password, role string) (*User, error) {
+	if role != "screen_user" && role != "restricted" {
+		return nil, fmt.Errorf("auth: invalid role: %s", role)
+	}
+	var tenantID string
+	err := s.pool.QueryRow(ctx, `select id from tenants where slug = $1`, tenantSlug).Scan(&tenantID)
+	if err != nil {
+		if err == pgx.ErrNoRows {
+			return nil, fmt.Errorf("auth: tenant not found: %s", tenantSlug)
+		}
+		return nil, fmt.Errorf("auth: resolve tenant: %w", err)
+	}
+
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), 12)
+	if err != nil {
+		return nil, fmt.Errorf("auth: hash password: %w", err)
+	}
+
+	row := s.pool.QueryRow(ctx,
+		`insert into users(tenant_id, username, password_hash, role)
+		 values($1, $2, $3, $4)
+		 returning id, tenant_id, $5::text, username, password_hash, role, created_at`,
+		tenantID, username, string(hash), role, tenantSlug)
+	u, err := scanUserWithSlug(row)
+	if err != nil {
+		return nil, fmt.Errorf("auth: create screen user: %w", err)
+	}
+	return u, nil
+}
+```
+
+- [ ] **Step 2: `ListScreenUsers` erweitern — restricted-User einschließen**
+
+Aktuell (Zeile 191–210) filtert `where t.slug = $1 and u.role = 'screen_user'`. Ändere auf:
+
+```go
+func (s *AuthStore) ListScreenUsers(ctx context.Context, tenantSlug string) ([]*User, error) {
+	rows, err := s.pool.Query(ctx,
+		`select u.id, u.tenant_id, coalesce(t.slug, ''), u.username, u.password_hash, u.role, u.created_at
+		   from users u
+		   left join tenants t on t.id = u.tenant_id
+		  where t.slug = $1 and u.role IN ('screen_user', 'restricted')
+		  order by u.username`, tenantSlug)
+	if err != nil {
+		return nil, fmt.Errorf("auth: list screen users: %w", err)
+	}
+	defer rows.Close()
+	var out []*User
+	for rows.Next() {
+		u, err := scanUserWithSlug(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, u)
+	}
+	return out, rows.Err()
+}
+```
+
+- [ ] **Step 3: Kompilierung prüfen**
+
+```bash
+cd server/backend && go build ./...
+```
+
+Erwartetes Ergebnis: Compiler-Fehler in `manage/ui.go` — `CreateScreenUser` bekommt zu wenig Argumente. Das beheben wir in Task 4.
+
+- [ ] **Step 4: Commit (noch nicht buildbar — wird in Task 4 fixiert)**
+
+```bash
+git add server/backend/internal/store/auth.go
+git commit -m "feat(store): CreateScreenUser nimmt role-Parameter; ListScreenUsers schließt restricted ein"
+```
+
+---
+
+## Task 3: Router — Steuerungs-Routen mit `RequireNotRestricted` absichern
+
+**Files:**
+- Modify: `server/backend/internal/httpapi/router.go`
+
+- [ ] **Step 1: Neue Middleware-Kombinatoren in `registerManageRoutes` einfügen**
+
+In `router.go`, nach dem Block `authScreen := func(h http.Handler) http.Handler { ... }` (nach Zeile 143), einfügen:
+
+```go
+// authScreenControl: wie authScreen, aber zusätzlich restricted-User blockiert.
+// Für Endpunkte, die restricted-User nicht nutzen dürfen (Display, Schedule, Override).
+authScreenControl := func(h http.Handler) http.Handler {
+    return chain(h, RequireAuth(d.AuthStore), RequireScreenAccess(d.ScreenStore), RequireNotRestricted, setCSRF, csrf)
+}
+// authOnlyControl: wie authOnly, aber zusätzlich restricted-User blockiert.
+// Für globalen Override (kein spezifischer Screen).
+authOnlyControl := func(h http.Handler) http.Handler {
+    return chain(h, RequireAuth(d.AuthStore), RequireNotRestricted, setCSRF, csrf)
+}
+```
+
+- [ ] **Step 2: Steuerungs-Routen auf neue Kombinatoren umstellen**
+
+Ändere folgende Routen (in `router.go`):
+
+```go
+// ── Display control ───────────────────────────────────────────────────────────
+mux.Handle("POST /api/v1/screens/{screenSlug}/display",
+    authScreenControl(http.HandlerFunc(manage.HandleDisplayCommand(notifier))))
+
+// ── Schedule control ──────────────────────────────────────────────────────────
+mux.Handle("POST /api/v1/screens/{screenSlug}/schedule",
+    authScreenControl(http.HandlerFunc(manage.HandleUpdateSchedule(d.ScreenStore, d.ScheduleStore))))
+
+// ── Globaler Override ────────────────────────────────────────────────────────
+mux.Handle("GET /api/v1/global-override",
+    authOnly(http.HandlerFunc(manage.HandleGetGlobalOverride(d.GlobalOverrideStore))))
+mux.Handle("POST /api/v1/global-override",
+    authOnlyControl(http.HandlerFunc(manage.HandleSetGlobalOverride(d.GlobalOverrideStore, d.ScreenStore, notifier))))
+mux.Handle("DELETE /api/v1/global-override",
+    authOnlyControl(http.HandlerFunc(manage.HandleDeleteGlobalOverride(d.GlobalOverrideStore))))
+
+// ── Per-Screen Override ───────────────────────────────────────────────────────
+mux.Handle("POST /api/v1/screens/{screenSlug}/override",
+    authScreenControl(http.HandlerFunc(manage.HandleSetScreenOverride(d.ScreenStore, d.ScheduleStore))))
+```
+
+- [ ] **Step 3: Kompilierung prüfen**
+
+```bash
+cd server/backend && go build ./...
+```
+
+Erwartetes Ergebnis: Fehler bleibt in `manage/ui.go` (Task 4 nicht fertig). Keine neuen Fehler.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add server/backend/internal/httpapi/router.go
+git commit -m "feat(router): Steuerungs-Endpunkte blocken restricted-User (403)"
+```
+
+---
+
+## Task 4: Handler — `HandleCreateScreenUser` + `UserRole` ans Template übergeben
+
+**Files:**
+- Modify: `server/backend/internal/httpapi/manage/ui.go`
+
+- [ ] **Step 1: `HandleCreateScreenUser` — `role` aus Formular lesen**
+
+Ersetze den Inhalt von `HandleCreateScreenUser` (Zeile 204–232):
+
+```go
+// HandleCreateScreenUser creates a new screen user (role: screen_user or restricted) for the default tenant.
+func HandleCreateScreenUser(auth *store.AuthStore) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if err := r.ParseForm(); err != nil {
+			http.Error(w, "bad form", http.StatusBadRequest)
+			return
+		}
+		username := strings.TrimSpace(r.FormValue("username"))
+		password := r.FormValue("password")
+		if username == "" || password == "" {
+			http.Redirect(w, r, "/admin?tab=users&msg=error_empty", http.StatusSeeOther)
+			return
+		}
+
+		role := r.FormValue("role")
+		if role != "screen_user" && role != "restricted" {
+			role = "screen_user"
+		}
+
+		tenantSlug := "morz"
+		if u := reqcontext.UserFromContext(r.Context()); u != nil && u.TenantSlug != "" {
+			tenantSlug = u.TenantSlug
+		}
+
+		_, err := auth.CreateScreenUser(r.Context(), tenantSlug, username, password, role)
+		if err != nil {
+			slog.Error("create screen user failed", "event", "create_screen_user_failed",
+				"tenant_slug", tenantSlug, "username", username, "err", err)
+			http.Redirect(w, r, "/admin?tab=users&msg=error_exists", http.StatusSeeOther)
+			return
+		}
+		http.Redirect(w, r, "/admin?tab=users&msg=user_added", http.StatusSeeOther)
+	}
+}
+```
+
+- [ ] **Step 2: `HandleScreenOverview` — `UserRole` ans Template übergeben**
+
+In `HandleScreenOverview` den `renderTemplate`-Aufruf (ab Zeile 336) erweitern:
+
+```go
+renderTemplate(w, t, map[string]any{
+    "Cards":          cards,
+    "CSRFToken":      csrfToken,
+    "GlobalOverride": activeOverride,
+    "UserRole":       u.Role,
+})
+```
+
+(`u` ist bereits am Anfang des Handlers mit `u := reqcontext.UserFromContext(r.Context())` deklariert.)
+
+- [ ] **Step 3: `HandleManageUI` — `UserRole` ans Template übergeben**
+
+In `HandleManageUI`, vor dem `renderTemplate`-Aufruf (Zeile 453), `userRole` bestimmen:
+
+```go
+userRole := ""
+if u := reqcontext.UserFromContext(r.Context()); u != nil {
+    userRole = u.Role
+}
+```
+
+Dann im `renderTemplate`-Aufruf ergänzen:
+
+```go
+renderTemplate(w, t, map[string]any{
+    "Screen":            screen,
+    "Tenant":            tenant,
+    "Playlist":          playlist,
+    "Items":             items,
+    "Assets":            assets,
+    "AddedAssets":       addedAssets,
+    "BackLink":          backLink,
+    "BackLabel":         backLabel,
+    "IsAdmin":           isAdmin,
+    "AccessibleScreens": accessibleScreens,
+    "ServerTimezone":    serverTimezone,
+    "CSRFToken":         csrfToken,
+    "DisplayState":      displayState,
+    "Schedule":          schedule,
+    "UserRole":          userRole,
+})
+```
+
+- [ ] **Step 4: Kompilierung prüfen**
+
+```bash
+cd server/backend && go build ./...
+```
+
+Erwartetes Ergebnis: `go build ./...` — PASS, kein Fehler
+
+- [ ] **Step 5: Tests laufen lassen**
+
+```bash
+cd server/backend && go test ./...
+```
+
+Erwartetes Ergebnis: alle Tests PASS (inkl. `TestRequireNotRestricted_*`)
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add server/backend/internal/httpapi/manage/ui.go
+git commit -m "feat(handler): HandleCreateScreenUser liest role; UserRole ans Template übergeben"
+```
+
+---
+
+## Task 5: Template — Admin-Formular: Rolle-Dropdown + Rollen-Badge in User-Liste
+
+**Files:**
+- Modify: `server/backend/internal/httpapi/manage/templates.go`
+
+- [ ] **Step 1: Rolle-Dropdown ins User-Anlegen-Formular einfügen**
+
+Im Admin-Template (`adminTmpl`), das User-Anlegen-Formular (um Zeile 521–548). Aktuell hat es 3 Spalten (`is-4` je Spalte). Füge eine vierte Spalte für die Rolle ein und passe alle auf `is-3` an:
+
+Ersetze den `<div class="columns is-vcentered">` Block (Zeile 522 bis 547):
+
+```html
+<div class="columns is-vcentered">
+  <div class="column is-3">
+    <div class="field">
+      <label class="label is-small">Benutzername</label>
+      <input class="input is-small" type="text" name="username" placeholder="z.B. alice" required autocomplete="off">
+    </div>
+  </div>
+  <div class="column is-3">
+    <div class="field">
+      <label class="label is-small">Passwort</label>
+      <div class="control has-icons-right">
+        <input class="input is-small" type="password" id="admin-new-password" name="password" placeholder="Mindestens 8 Zeichen" required autocomplete="new-password" minlength="8">
+        <span class="icon is-small is-right" style="pointer-events:all;cursor:pointer" onclick="var i=document.getElementById('admin-new-password');i.type=i.type==='password'?'text':'password'">
+          <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg>
+        </span>
+      </div>
+      <p class="help">Mind. 8 Zeichen</p>
+    </div>
+  </div>
+  <div class="column is-3">
+    <div class="field">
+      <label class="label is-small">Rolle</label>
+      <div class="control">
+        <div class="select is-small is-fullwidth">
+          <select name="role">
+            <option value="screen_user">Vollzugriff</option>
+            <option value="restricted">Eingeschränkt (nur Medien/Playlist)</option>
+          </select>
+        </div>
+      </div>
+    </div>
+  </div>
+  <div class="column is-3">
+    <div class="field">
+      <label class="label is-small">&nbsp;</label>
+      <button class="button is-primary is-small" type="submit">Benutzer anlegen</button>
+    </div>
+  </div>
+</div>
+```
+
+- [ ] **Step 2: Rollen-Badge in der User-Liste hinzufügen**
+
+In der User-Tabelle (um Zeile 502–510), in der `<td><strong>{{.Username}}</strong></td>`-Zelle die Rolle als Badge ergänzen:
+
+```html
+<td>
+  <strong>{{.Username}}</strong>
+  {{if eq .Role "restricted"}}
+  <span class="tag is-warning is-light is-small ml-2">Eingeschränkt</span>
+  {{end}}
+</td>
+```
+
+- [ ] **Step 3: Kompilierung prüfen**
+
+```bash
+cd server/backend && go build ./...
+```
+
+Erwartetes Ergebnis: PASS
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add server/backend/internal/httpapi/manage/templates.go
+git commit -m "feat(ui): Admin-Formular: Rolle-Dropdown + Badge in User-Liste"
+```
+
+---
+
+## Task 6: Template — UI-Guards für restricted-User
+
+**Files:**
+- Modify: `server/backend/internal/httpapi/manage/templates.go`
+
+- [ ] **Step 1: Globalen Override-Banner und Bulk-Leiste in `screenOverviewTmpl` ausblenden**
+
+Der `screenOverviewTmpl` hat zwei Blöcke, die für restricted ausgeblendet werden müssen:
+
+**a) Globaler Override-Banner** — Suche den Block der mit `{{if .GlobalOverride}}` beginnt (und davor den "Alle ausschalten"-Button-Bereich). Wrap den gesamten Override-Banner-Bereich:
+
+```html
+{{if ne .UserRole "restricted"}}
+... gesamter globaler Override-Bereich (Banner + Buttons) ...
+{{end}}
+```
+
+**b) Bulk-Steuerleiste** — Suche den Block `{{if gt (len .Cards) 1}}` der die "Alle an/Alle aus"-Buttons enthält. Wrap ihn:
+
+```html
+{{if and (gt (len .Cards) 1) (ne .UserRole "restricted")}}
+... Bulk-Leiste ...
+{{end}}
+```
+
+- [ ] **Step 2: An/Aus-Buttons und per-Screen-Override in Karten ausblenden**
+
+Innerhalb von `{{range .Cards}}` (Zugriff auf Top-Level-Variable mit `$`):
+
+Suche den Display-State-Badge-Bereich mit den On/Off-Buttons. Wrap die Buttons (nicht den Badge selbst):
+
+```html
+{{if ne $.UserRole "restricted"}}
+<button class="button is-small is-success" onclick="sendDisplayCmd('{{.Screen.Slug}}','on')">Ein</button>
+<button class="button is-small is-danger is-outlined" onclick="sendDisplayCmd('{{.Screen.Slug}}','off')">Aus</button>
+{{end}}
+```
+
+Wrap den gesamten per-Screen Override Block (`{{if not_expired .OverrideOnUntil}}...{{else}}<details>...{{end}}`):
+
+```html
+{{if ne $.UserRole "restricted"}}
+{{if not_expired .OverrideOnUntil}}
+  ... override badge + clear button ...
+{{else}}
+  <details>...</details>
+{{end}}
+{{end}}
+```
+
+- [ ] **Step 3: Zeitplan-Box und Override-Box in `manageTmpl` ausblenden**
+
+In `manageTmpl`:
+
+**Zeitplan-Box** — Suche den Kasten mit dem Heading "Zeitplan" (enthält `<input type="time">` Felder). Wrap den gesamten `<div class="box">` um die Zeitplan-Box:
+
+```html
+{{if ne .UserRole "restricted"}}
+<div class="box">
+  ... Zeitplan-Inhalt ...
+</div>
+{{end}}
+```
+
+**Override-Box** — Suche den Kasten mit "Einschalten bis (Override)". Wrap analog:
+
+```html
+{{if ne .UserRole "restricted"}}
+<div class="box">
+  ... Override-Inhalt ...
+</div>
+{{end}}
+```
+
+- [ ] **Step 4: Kompilierung prüfen**
+
+```bash
+cd server/backend && go build ./...
+```
+
+Erwartetes Ergebnis: PASS
+
+- [ ] **Step 5: Tests laufen lassen**
+
+```bash
+cd server/backend && go test ./...
+```
+
+Erwartetes Ergebnis: alle Tests PASS
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add server/backend/internal/httpapi/manage/templates.go
+git commit -m "feat(ui): restricted-User sehen keine Steuerungs-UI (An/Aus, Zeitplan, Override)"
+```
+
+---
+
+## Task 7: Dokumentation
+
+**Files:**
+- Modify: `docs/API-ENDPOINTS.md`
+- Modify: `server/backend/README.md`
+
+- [ ] **Step 1: `docs/API-ENDPOINTS.md` aktualisieren**
+
+Ergänze bei den Endpunkten für Display-Steuerung, Zeitplan und Override jeweils eine Zeile:
+
+> `restricted`-User erhalten 403 Forbidden.
+
+Abschnitt "Auth / Rollen" (falls vorhanden) um den neuen Rollenwert `restricted` ergänzen.
+
+- [ ] **Step 2: `server/backend/README.md` aktualisieren**
+
+Ergänze in der Rollenbeschreibung:
+
+```
+- `restricted` — Darf Medien hochladen und Playlist bearbeiten.
+  Keine Display-Steuerung (An/Aus, Zeitplan, Override).
+```
+
+- [ ] **Step 3: Kompilierung + Tests finaler Check**
+
+```bash
+cd server/backend && go build ./... && go test ./...
+```
+
+Erwartetes Ergebnis: PASS
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add docs/API-ENDPOINTS.md server/backend/README.md
+git commit -m "docs: restricted-Rolle in API-Endpoints und README dokumentiert"
+```
+
+---
+
+## Self-Review
+
+**Spec coverage:**
+- ✅ Neuer Rollenwert `"restricted"` — Task 2 (`CreateScreenUser` role-Param)
+- ✅ Middleware `RequireNotRestricted` — Task 1
+- ✅ Endpunkte display/schedule/override blockiert — Task 3
+- ✅ Template `UserRole` + Guards — Tasks 4, 5, 6
+- ✅ Admin-UI Rolle-Dropdown — Task 5
+- ✅ Bestehende User unberührt (`ListScreenUsers` erweitert, kein Default-Change) — Task 2
+
+**Placeholder scan:** keine TBDs, alle Code-Blöcke vollständig.
+
+**Type consistency:** `CreateScreenUser(ctx, tenantSlug, username, password, role string)` — konsistent in Tasks 2 + 4.