Merge branch 'worktree-agent-ae59040b377a324cb'

# Conflicts:
#	GerbilManagerWebAPI/ApplicationContext.cs
#	GerbilManagerWebAPI/Program.cs
#	gerbil-manager-web/e2e/mock-data.ts
#	gerbil-manager-web/src/pages/GerbilDetailPage.tsx
#	gerbil-manager-web/src/strings/de.ts

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

@@ -0,0 +1,61 @@
+/**
+ * EXHIBITION: typed API client for show/exhibition results & awards per animal
+ * (RennmausPro `ausz_tb`). Backend: GET /exhibitions[?gerbilId=], POST, PUT, DELETE.
+ * Decoupled from gerbils (loose nullable gerbilId, no FK) — rows survive the import wipe.
+ */
+import { api } from './client'
+import type { DateOnlyString } from './types'
+
+const RESOURCE = '/exhibitions'
+
+export interface ExhibitionResult {
+  id: string
+  gerbilId: string | null
+  entityName: string | null
+  eventName: string
+  /** ISO date-time string (backend DateTime?), or null. */
+  date: DateOnlyString | string | null
+  placement: string | null
+  award: string | null
+  note: string | null
+  createdAt: string
+}
+
+/** Payload for POST /exhibitions. */
+export interface CreateExhibitionResult {
+  gerbilId?: string | null
+  entityName?: string | null
+  eventName: string
+  date?: string | null
+  placement?: string | null
+  award?: string | null
+  note?: string | null
+}
+
+/** Payload for PUT /exhibitions/{id} (partial). */
+export type UpdateExhibitionResult = Partial<CreateExhibitionResult>
+
+/** Alle Ergebnisse eines Tieres (Backend sortiert neueste zuerst). */
+export function listExhibitionResults(gerbilId: string): Promise<ExhibitionResult[]> {
+  return api.get<ExhibitionResult[]>(`${RESOURCE}?gerbilId=${encodeURIComponent(gerbilId)}`)
+}
+
+/** Alle Ergebnisse (ungefiltert), für eine künftige Gesamtübersicht. */
+export function listAllExhibitionResults(): Promise<ExhibitionResult[]> {
+  return api.get<ExhibitionResult[]>(RESOURCE)
+}
+
+export function createExhibitionResult(body: CreateExhibitionResult): Promise<ExhibitionResult> {
+  return api.post<ExhibitionResult>(RESOURCE, body)
+}
+
+export function updateExhibitionResult(
+  id: string,
+  body: UpdateExhibitionResult,
+): Promise<ExhibitionResult> {
+  return api.put<ExhibitionResult>(`${RESOURCE}/${id}`, body)
+}
+
+export function deleteExhibitionResult(id: string): Promise<void> {
+  return api.delete(`${RESOURCE}/${id}`)
+}

gerbil-manager-web/src/components/GerbilExhibitionsTab.tsx

@@ -0,0 +1,238 @@
+/**
+ * EXHIBITION: Ausstellungen-Tab — Show-/Ausstellungsergebnisse & Auszeichnungen
+ * eines Tieres (RennmausPro `ausz_tb`). Liste (neueste zuerst) + Inline-Formular
+ * zum Anlegen/Bearbeiten, Löschen mit Bestätigung. Deutsch durchgehend (de.ts).
+ *
+ * Eigenständige Komponente mit nur EINER Einbindungs-Zeile in GerbilDetailPage
+ * (entkoppelt: loses gerbilId ohne FK, übersteht den Import-Wipe).
+ */
+import { useState, type FormEvent } from 'react'
+import { de } from '../strings/de'
+import {
+  createExhibitionResult,
+  deleteExhibitionResult,
+  listExhibitionResults,
+  updateExhibitionResult,
+  type CreateExhibitionResult,
+  type ExhibitionResult,
+} from '../api/exhibitions'
+import { useApi, useMutation } from '../hooks/useApi'
+import { formatDate } from '../format/labels'
+
+interface FormState {
+  eventName: string
+  date: string
+  placement: string
+  award: string
+  note: string
+}
+
+const emptyForm = (): FormState => ({
+  eventName: '',
+  date: '',
+  placement: '',
+  award: '',
+  note: '',
+})
+
+/** A stored date-time → the date input's "yyyy-MM-dd" value (empty if none). */
+function toDateInput(value: string | null): string {
+  if (!value) return ''
+  return value.slice(0, 10)
+}
+
+export default function GerbilExhibitionsTab({
+  gerbilId,
+  entityName,
+}: {
+  gerbilId: string
+  entityName: string
+}) {
+  const t = de.pages.tierTabs.exhibitions
+  const ta = de.pages.tierTabs.actions
+
+  const records = useApi(() => listExhibitionResults(gerbilId), [gerbilId])
+
+  // editing: null = kein Formular, 'new' = anlegen, sonst Record-Id (bearbeiten)
+  const [editing, setEditing] = useState<string | null>(null)
+  const [form, setForm] = useState<FormState>(emptyForm)
+  const [errors, setErrors] = useState<Partial<Record<keyof FormState, string>>>({})
+
+  const save = useMutation((body: CreateExhibitionResult) =>
+    editing && editing !== 'new'
+      ? updateExhibitionResult(editing, body)
+      : createExhibitionResult(body),
+  )
+  const removal = useMutation((recordId: string) => deleteExhibitionResult(recordId))
+
+  const set = <K extends keyof FormState>(key: K, value: FormState[K]) =>
+    setForm((f) => ({ ...f, [key]: value }))
+
+  function openCreate() {
+    setForm(emptyForm())
+    setErrors({})
+    setEditing('new')
+  }
+
+  function openEdit(r: ExhibitionResult) {
+    setForm({
+      eventName: r.eventName,
+      date: toDateInput(r.date as string | null),
+      placement: r.placement ?? '',
+      award: r.award ?? '',
+      note: r.note ?? '',
+    })
+    setErrors({})
+    setEditing(r.id)
+  }
+
+  async function onSubmit(e: FormEvent) {
+    e.preventDefault()
+    const next: Partial<Record<keyof FormState, string>> = {}
+    if (form.eventName.trim() === '') next.eventName = t.validation.eventNameRequired
+    setErrors(next)
+    if (Object.keys(next).length > 0) return
+
+    const trimmed = (s: string) => (s.trim() === '' ? null : s.trim())
+    await save.run({
+      gerbilId,
+      entityName,
+      eventName: form.eventName.trim(),
+      // date input gives "yyyy-MM-dd"; send as ISO so the backend DateTime? parses it.
+      date: form.date ? `${form.date}T00:00:00Z` : null,
+      placement: trimmed(form.placement),
+      award: trimmed(form.award),
+      note: trimmed(form.note),
+    })
+    setEditing(null)
+    records.reload()
+  }
+
+  async function onDelete(recordId: string) {
+    if (!window.confirm(t.deleteConfirm)) return
+    await removal.run(recordId)
+    records.reload()
+  }
+
+  return (
+    <div>
+      {editing === null && (
+        <button type="button" className="btn btn--primary" onClick={openCreate}>
+          + {t.newButton}
+        </button>
+      )}
+
+      {editing !== null && (
+        <form className="form" onSubmit={onSubmit} noValidate>
+          <h4>{editing === 'new' ? t.createTitle : t.editTitle}</h4>
+
+          <label className="field">
+            <span>{t.fields.eventName} *</span>
+            <input
+              className="input"
+              value={form.eventName}
+              placeholder={t.placeholders.eventName}
+              onChange={(e) => set('eventName', e.target.value)}
+              aria-invalid={Boolean(errors.eventName)}
+            />
+            {errors.eventName && <small className="error-text">{errors.eventName}</small>}
+          </label>
+
+          <label className="field">
+            <span>{t.fields.date}</span>
+            <input
+              type="date"
+              className="input"
+              value={form.date}
+              onChange={(e) => set('date', e.target.value)}
+            />
+          </label>
+
+          <label className="field">
+            <span>{t.fields.placement}</span>
+            <input
+              className="input"
+              value={form.placement}
+              placeholder={t.placeholders.placement}
+              onChange={(e) => set('placement', e.target.value)}
+            />
+          </label>
+
+          <label className="field">
+            <span>{t.fields.award}</span>
+            <input
+              className="input"
+              value={form.award}
+              placeholder={t.placeholders.award}
+              onChange={(e) => set('award', e.target.value)}
+            />
+          </label>
+
+          <label className="field">
+            <span>{t.fields.note}</span>
+            <textarea value={form.note} onChange={(e) => set('note', e.target.value)} />
+          </label>
+
+          {save.error && <div className="alert alert--error">{save.error}</div>}
+
+          <div className="form-actions">
+            <button type="submit" className="btn btn--primary" disabled={save.pending}>
+              {save.pending ? ta.saving : ta.save}
+            </button>
+            <button type="button" className="btn" onClick={() => setEditing(null)}>
+              {ta.cancel}
+            </button>
+          </div>
+        </form>
+      )}
+
+      {records.loading && <p className="muted">{de.common.loading}</p>}
+      {records.error && (
+        <div className="alert alert--error">
+          <span>{records.error}</span>
+          <button type="button" className="btn" onClick={records.reload}>
+            {de.common.retry}
+          </button>
+        </div>
+      )}
+      {removal.error && <div className="alert alert--error">{removal.error}</div>}
+
+      {!records.loading && !records.error && (records.data ?? []).length === 0 && (
+        <p className="muted">{t.empty}</p>
+      )}
+
+      {(records.data ?? []).length > 0 && (
+        <ul className="card-list" style={{ marginTop: '1rem' }}>
+          {(records.data ?? []).map((r) => (
+            <li key={r.id} className="record-card">
+              <div className="record-card__head">
+                <span className="record-card__date">
+                  {r.date ? formatDate(toDateInput(r.date as string | null)) : '—'}
+                </span>
+                {r.placement && <span className="badge">{r.placement}</span>}
+                {r.award && <span className="badge badge--active">{r.award}</span>}
+              </div>
+              <p className="record-card__body">
+                <strong>{r.eventName}</strong>
+              </p>
+              {r.note && <p className="muted">{r.note}</p>}
+              <div className="record-card__actions">
+                <button type="button" className="btn" onClick={() => openEdit(r)}>
+                  {ta.edit}
+                </button>
+                <button
+                  type="button"
+                  className="btn btn--danger"
+                  onClick={() => onDelete(r.id)}
+                  disabled={removal.pending}
+                >
+                  {ta.delete}
+                </button>
+              </div>
+            </li>
+          ))}
+        </ul>
+      )}
+    </div>
+  )
+}

gerbil-manager-web/src/pages/GerbilDetailPage.tsx

@@ -11,6 +11,7 @@ import { fromDisplayString, genotypeToFarbschlag, displayGenotypeSafe } from '..
 import type { Gender, GerbilStatus } from '../api/types'
 import FarbschlagImage from '../components/FarbschlagImage'
 import GerbilAcquisitionSection from '../components/GerbilAcquisitionSection'
+import GerbilExhibitionsTab from '../components/GerbilExhibitionsTab'
 import GerbilHealthTab from '../components/GerbilHealthTab'
 import GerbilPhotosTab from '../components/GerbilPhotosTab'
 import GerbilProfilePhoto from '../components/GerbilProfilePhoto'
@@ -21,7 +22,7 @@ import { useGerbilName } from '../components/breederSuffix'
 import { useToast } from '../components/toast'
 import './rennmausakte.css'
 
-type DetailTab = 'photos' | 'health' | 'weight'
+type DetailTab = 'photos' | 'health' | 'weight' | 'exhibitions'
 
 // DESIGN (Rennmausakte): per-status colours for the hero status badge.
 const STATUS_COLORS: Record<GerbilStatus, string> = {
@@ -476,7 +477,7 @@ export default function GerbilDetailPage() {
         <section className="ak-card">
           <h2 className="visually-hidden">{t.detail.moreData}</h2>
           <div className="ak-tabs" role="tablist">
-            {(['photos', 'health', 'weight'] as const).map((key) => (
+            {(['photos', 'health', 'weight', 'exhibitions'] as const).map((key) => (
               <button
                 key={key}
                 type="button"
@@ -493,6 +494,12 @@ export default function GerbilDetailPage() {
             {tab === 'photos' && <GerbilPhotosTab gerbilId={g.id} />}
             {tab === 'health' && <GerbilHealthTab gerbilId={g.id} />}
             {tab === 'weight' && <GerbilWeightTab gerbilId={g.id} />}
+            {tab === 'exhibitions' && (
+              <GerbilExhibitionsTab
+                gerbilId={g.id}
+                entityName={gerbilName(g) || de.pages.gerbils.nameless}
+              />
+            )}
           </div>
         </section>
       </div>

gerbil-manager-web/src/strings/de.ts

@@ -119,6 +119,7 @@ export const de = {
           photos: 'Fotos',
           health: 'Gesundheit',
           weight: 'Gewicht',
+          exhibitions: 'Ausstellungen',
         },
         tabPlaceholder: 'Dieser Bereich entsteht in einem späteren Schritt.',
         notFound: 'Diese Rennmaus wurde nicht gefunden.',
@@ -853,6 +854,29 @@ export const de = {
           priceRange: 'Bitte einen plausiblen Preis (0 bis 9999 €) angeben.',
         },
       },
+      // ── Ausstellungen/Auszeichnungen je Tier (RennmausPro ausz_tb) ──
+      exhibitions: {
+        empty: 'Noch keine Ausstellungsergebnisse erfasst.',
+        newButton: 'Neues Ergebnis',
+        createTitle: 'Neues Ausstellungsergebnis',
+        editTitle: 'Ausstellungsergebnis bearbeiten',
+        fields: {
+          eventName: 'Veranstaltung',
+          date: 'Datum',
+          placement: 'Platzierung',
+          award: 'Auszeichnung',
+          note: 'Notiz',
+        },
+        placeholders: {
+          eventName: 'z. B. Nationale Rennmausschau 2026',
+          placement: 'z. B. 1. Platz',
+          award: 'z. B. Best in Show',
+        },
+        validation: {
+          eventNameRequired: 'Bitte eine Veranstaltung angeben.',
+        },
+        deleteConfirm: 'Dieses Ausstellungsergebnis wirklich löschen?',
+      },
     },
     // ── EXPORT-1 (Oscar): Datenexport (Karte auf /einstellungen) ──
     datenexport: {