v1.5: Alle Manager-Komponenten auf eigene API-Routen umgestellt

Neue interne Route Handler unter app/api/ (dishes inkl. Bulk-Delete,
sections, allergens, additives, menu-entries, dish-suggestions,
settings, admin/branding) ersetzen den direkten Browser→Postgrest-
Zugriff der bisherigen Supabase-Anbindung. Jede Route prüft Autorisierung
selbst (lib/auth/session.ts requireRole) statt sich auf Postgres-RLS zu
verlassen – ersetzt 1:1 die bisherigen Policies (öffentlich lesbar /
staff+admin schreiben / nur admin für Einstellungen & Benutzer).

Rezeptvorschlag-Dublettencheck (SuggestionForm) läuft jetzt zwingend
serverseitig im POST-Handler, da es keinen Browser→Postgres-Pfad mehr
gibt. "Passkey annehmen" (SuggestionReview) läuft transaktional
(Gericht anlegen + Vorschlag löschen in einem Schritt).

Logo/Favicon: neuer lokaler Dateispeicher (lib/branding.ts, Docker-
Volume) statt Supabase-Storage-Bucket, ausgeliefert über
app/branding/[filename]. logoUrl()/faviconUrl() liefern jetzt einfache
relative Pfade statt einer fest verdrahteten Supabase-Storage-URL.

DeepL-Route (api/translate) und Benutzerverwaltung (api/admin/users)
laufen jetzt gegen die users-Tabelle statt Supabase Auth.

Alle "use client"-Manager-Komponenten (DishManager, WeekEditor,
SectionManager, CodeListManager, SuggestionForm/Review, UserManager,
DesignEditor) rufen ihre jeweiligen /api/-Routen per fetch() statt den
Supabase-Browser-Client zu nutzen.

app/api/dish-suggestions/[id]/accept/route.ts

@@ -0,0 +1,37 @@
+import { NextResponse } from "next/server";
+import { withTransaction } from "@/lib/db";
+import { authErrorResponse, requireRole } from "@/lib/auth/session";
+import { isSameOrigin } from "@/lib/origin";
+
+export async function POST(
+  request: Request,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  if (!isSameOrigin(request)) {
+    return NextResponse.json({ error: "Nicht erlaubt." }, { status: 403 });
+  }
+  try {
+    await requireRole(["staff", "admin"]);
+    const { id } = await params;
+
+    const created = await withTransaction(async (client) => {
+      const suggestion = await client.query<{ name: string }>(
+        "select name from dish_suggestions where id = $1",
+        [id]
+      );
+      if (suggestion.rows.length === 0) return null;
+      await client.query("insert into dishes (name, price) values ($1, 0)", [
+        suggestion.rows[0].name,
+      ]);
+      await client.query("delete from dish_suggestions where id = $1", [id]);
+      return true;
+    });
+
+    if (!created) return NextResponse.json({ error: "not_found" }, { status: 404 });
+    return NextResponse.json({ ok: true });
+  } catch (err) {
+    const res = authErrorResponse(err);
+    if (res) return res;
+    throw err;
+  }
+}

app/api/dish-suggestions/[id]/route.ts

@@ -0,0 +1,23 @@
+import { NextResponse } from "next/server";
+import { query } from "@/lib/db";
+import { authErrorResponse, requireRole } from "@/lib/auth/session";
+import { isSameOrigin } from "@/lib/origin";
+
+export async function DELETE(
+  request: Request,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  if (!isSameOrigin(request)) {
+    return NextResponse.json({ error: "Nicht erlaubt." }, { status: 403 });
+  }
+  try {
+    await requireRole(["staff", "admin"]);
+    const { id } = await params;
+    await query("delete from dish_suggestions where id = $1", [id]);
+    return NextResponse.json({ ok: true });
+  } catch (err) {
+    const res = authErrorResponse(err);
+    if (res) return res;
+    throw err;
+  }
+}

app/api/dish-suggestions/route.ts

@@ -0,0 +1,45 @@
+import { NextResponse } from "next/server";
+import { query, queryOne } from "@/lib/db";
+import { authErrorResponse, requireRole } from "@/lib/auth/session";
+import { isSameOrigin } from "@/lib/origin";
+import type { DishSuggestion } from "@/lib/types";
+
+export async function GET() {
+  try {
+    await requireRole(["staff", "admin"]);
+  } catch (err) {
+    const res = authErrorResponse(err);
+    if (res) return res;
+    throw err;
+  }
+  const items = await query<DishSuggestion>(
+    "select * from dish_suggestions order by created_at desc"
+  );
+  return NextResponse.json(items);
+}
+
+export async function POST(request: Request) {
+  if (!isSameOrigin(request)) {
+    return NextResponse.json({ error: "Nicht erlaubt." }, { status: 403 });
+  }
+  const body = (await request.json().catch(() => ({}))) as {
+    name?: string;
+    description?: string;
+  };
+  const name = body.name?.trim();
+  if (!name) return NextResponse.json({ error: "name_required" }, { status: 400 });
+
+  // Serverseitig statt clientseitig (wie zuvor über den anon-Postgrest-
+  // Zugriff): es gibt keinen Browser→Postgres-Pfad mehr.
+  const existing = await queryOne<{ id: string }>(
+    "select id from dishes where name ilike $1 limit 1",
+    [name]
+  );
+  if (existing) return NextResponse.json({ error: "duplicate" }, { status: 409 });
+
+  await query("insert into dish_suggestions (name, description) values ($1, $2)", [
+    name,
+    body.description?.trim() || null,
+  ]);
+  return NextResponse.json({ ok: true }, { status: 201 });
+}