FEAT-13: Abgabe wizard (/vertraege/neu, 4 steps, ?tiere= prefill), Vertraege list w/ download+delete, /einstellungen Zuchtprofil form, contracts/settings API clients, nav entries, detail-page entry point + replace orphaned contactInfo with email/phone/address across Kontakt pages

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

gerbil-manager-web/src/api/settings.ts

@@ -0,0 +1,36 @@
+/** FEAT-13: Zuchtprofil (/settings/breeder-profile) — Verkäufer-Block der Verträge. */
+import { api } from './client'
+
+export interface BreederProfile {
+  zuchtName: string
+  name: string
+  address: string
+  phone: string
+  email: string
+  homepage: string
+  /** Ort der Unterschriftszeile („{Ort}, den {Datum}“). */
+  city: string
+}
+
+export const EMPTY_BREEDER_PROFILE: BreederProfile = {
+  zuchtName: '',
+  name: '',
+  address: '',
+  phone: '',
+  email: '',
+  homepage: '',
+  city: '',
+}
+
+/** Pflichtangaben für einen brauchbaren Vertrag (Hinweis-Logik der UI). */
+export function isBreederProfileComplete(p: BreederProfile): boolean {
+  return [p.name, p.address, p.city].every((v) => v.trim().length > 0)
+}
+
+export function getBreederProfile(): Promise<BreederProfile> {
+  return api.get<BreederProfile>('/settings/breeder-profile')
+}
+
+export function putBreederProfile(profile: BreederProfile): Promise<void> {
+  return api.put<void>('/settings/breeder-profile', profile)
+}