refactor(frontend): regen API types — migrate consumers off dropped Geschichte schema

With create/update returning GeschichteView, no endpoint serves the raw
Geschichte entity and springdoc drops its schema. Dashboard modules and the
home loader now use GeschichteSummary; GeschichteEditor takes GeschichteView
and maps persons into the displayName shape PersonMultiSelect renders —
fixing blank person chips on story edit. PersonMultiSelect/Sidebar narrow to
Pick<Person, 'id' | 'displayName'>, mirroring the DocumentOption precedent.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/lib/person/PersonMultiSelect.svelte

@@ -3,9 +3,12 @@ import type { components } from '$lib/generated/api';
 import { m } from '$lib/paraglide/messages.js';
 import { clickOutside } from '$lib/shared/actions/clickOutside';
 type Person = components['schemas']['Person'];
+// Narrow contract: only what the chips render and dedup needs. Full Person
+// objects from /api/persons remain assignable; view projections fit too.
+type PersonOption = Pick<Person, 'id' | 'displayName'>;
 
 interface Props {
-	selectedPersons?: Person[];
+	selectedPersons?: PersonOption[];
 }
 
 let { selectedPersons = $bindable([]) }: Props = $props();