UI-POLISH-2: '(ohne Namen)' Platzhalter in Stammbaum, Vertrag-Wizard, Wurf-Formular

- StammbaumPage: PedigreeCard-Name + PrintCell-Name + beide titleFor()-Aufrufe → g.name || nameless
- VertragWizardPage: wizard-pick__name + join(', ')-Tierliste → g.name || nameless
- WurfFormPage: fatherName/motherName in Prefill (nameById.get || nameless) + Picker-Auswahl (g.name || nameless)

e2e: neuer Test stammbaum.spec — namenloser Ahne zeigt Platzhalter in Karte + Titel

Gate: vitest 82/82, e2e 148/148, tsc clean

GerbilManager.Tests/PartialUpdateTests.cs

@@ -0,0 +1,143 @@
+using System.Net;
+using System.Net.Http.Json;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+
+namespace GerbilManager.Tests;
+
+/// <summary>CR-2 regression: PUT /gerbils/{id} must not silently destroy fields that
+/// the caller omits (PATCH semantics). The ForSale-toggle and Charakterbogen-save
+/// send partial bodies — all other fields must be preserved unchanged.</summary>
+public class PartialUpdateTests : IClassFixture<ApiFactory>
+{
+    private readonly HttpClient _client;
+
+    public PartialUpdateTests(ApiFactory factory) => _client = factory.CreateClient();
+
+    // ------------------------------------------------------------------ helpers
+
+    private static Guid ExtractId(string json) =>
+        Guid.Parse(Regex.Match(json, "\"id\":\"([^\"]+)\"").Groups[1].Value);
+
+    private static string? GetStr(JsonElement el, string prop) =>
+        el.TryGetProperty(prop, out var v) && v.ValueKind == JsonValueKind.String
+            ? v.GetString() : null;
+
+    private static string? GetNested(JsonElement el, string prop) =>
+        el.TryGetProperty(prop, out var v) ? v.ToString() : null;
+
+    /// <summary>Create a fully-populated gerbil and return its id.</summary>
+    private async Task<Guid> CreateFullGerbil(string name = "TestTier")
+    {
+        var resp = await _client.PostAsync("/gerbils", JsonContent.Create(new
+        {
+            name,
+            gender = "female",
+            genotype = "aa CC DD ee GG PP spsp rere",
+            originBreeder = "Zucht der Kleinen Chaoten",
+            isDeaf = false,
+            characterTraits = new[] { "neugierig", "zutraulich" },
+            characterNote = "Liebling der Familie",
+            notes = "Eine Notiz",
+            externalRef = "ext-001",
+        }));
+        Assert.Equal(HttpStatusCode.Created, resp.StatusCode);
+        return ExtractId(await resp.Content.ReadAsStringAsync());
+    }
+
+    // ------------------------------------------------------------------ tests
+
+    [Fact]
+    public async Task ForSale_toggle_does_not_wipe_other_fields()
+    {
+        // Arrange: create a fully-populated gerbil
+        var id = await CreateFullGerbil("ForSale-Tier");
+
+        // Act: send only { status: 'ForSale' } — exactly what the detail page does
+        var put = await _client.PutAsync($"/gerbils/{id}",
+            JsonContent.Create(new { status = "ForSale" }));
+        Assert.Equal(HttpStatusCode.NoContent, put.StatusCode);
+
+        // Assert: re-read and check all fields survive
+        var json = JsonDocument.Parse(await _client.GetStringAsync($"/gerbils/{id}")).RootElement;
+
+        Assert.Equal("ForSale", GetStr(json, "status"));
+        Assert.Equal("ForSale-Tier", GetStr(json, "name"));
+        Assert.Equal("female", GetStr(json, "gender"));
+        Assert.Equal("aa CC DD ee GG PP spsp rere", GetStr(json, "genotype"));
+        Assert.Equal("Zucht der Kleinen Chaoten", GetStr(json, "originBreeder"));
+        Assert.Equal("Eine Notiz", GetStr(json, "notes"));
+        Assert.Equal("ext-001", GetStr(json, "externalRef"));
+        Assert.Contains("neugierig", GetNested(json, "characterTraits") ?? "");
+        Assert.Equal("Liebling der Familie", GetStr(json, "characterNote"));
+    }
+
+    [Fact]
+    public async Task CharacterSave_does_not_wipe_other_fields()
+    {
+        // Arrange
+        var id = await CreateFullGerbil("Charakter-Tier");
+
+        // Act: send only { characterTraits, characterNote } — exactly what the Charakterbogen save does
+        var put = await _client.PutAsync($"/gerbils/{id}", JsonContent.Create(new
+        {
+            characterTraits = new[] { "handzahm" },
+            characterNote = "Neue Notiz",
+        }));
+        Assert.Equal(HttpStatusCode.NoContent, put.StatusCode);
+
+        // Assert: name / genotype / originBreeder / status / externalRef all intact
+        var json = JsonDocument.Parse(await _client.GetStringAsync($"/gerbils/{id}")).RootElement;
+
+        Assert.Equal("Active", GetStr(json, "status"));
+        Assert.Equal("Charakter-Tier", GetStr(json, "name"));
+        Assert.Equal("female", GetStr(json, "gender"));
+        Assert.Equal("aa CC DD ee GG PP spsp rere", GetStr(json, "genotype"));
+        Assert.Equal("Zucht der Kleinen Chaoten", GetStr(json, "originBreeder"));
+        Assert.Equal("Eine Notiz", GetStr(json, "notes"));
+        Assert.Equal("ext-001", GetStr(json, "externalRef"));
+        Assert.Contains("handzahm", GetNested(json, "characterTraits") ?? "");
+        Assert.Equal("Neue Notiz", GetStr(json, "characterNote"));
+    }
+
+    [Fact]
+    public async Task EditForm_omitting_import_fields_keeps_them()
+    {
+        // Arrange: gerbil with import-set fields
+        var id = await CreateFullGerbil("EditForm-Tier");
+
+        // Act: send a typical edit-form body that omits originBreeder/isDeaf/externalRef/characterTraits/characterNote
+        var put = await _client.PutAsync($"/gerbils/{id}", JsonContent.Create(new
+        {
+            name = "EditForm-Tier (umbenannt)",
+            gender = "female",
+            genotype = "aa CC DD ee GG PP spsp rere",
+            notes = "Aktualisierte Notiz",
+        }));
+        Assert.Equal(HttpStatusCode.NoContent, put.StatusCode);
+
+        // Assert: name updated, import fields survive
+        var json = JsonDocument.Parse(await _client.GetStringAsync($"/gerbils/{id}")).RootElement;
+
+        Assert.Equal("EditForm-Tier (umbenannt)", GetStr(json, "name"));
+        Assert.Equal("Aktualisierte Notiz", GetStr(json, "notes"));
+        Assert.Equal("Zucht der Kleinen Chaoten", GetStr(json, "originBreeder"));
+        Assert.Equal("ext-001", GetStr(json, "externalRef"));
+        Assert.Contains("neugierig", GetNested(json, "characterTraits") ?? "");
+        Assert.Equal("Liebling der Familie", GetStr(json, "characterNote"));
+    }
+
+    [Fact]
+    public async Task Create_with_minimal_body_uses_safe_defaults()
+    {
+        // A minimal POST (only name) must still produce a valid gerbil
+        var resp = await _client.PostAsync("/gerbils", JsonContent.Create(new { name = "Minimal" }));
+        Assert.Equal(HttpStatusCode.Created, resp.StatusCode);
+
+        var json = JsonDocument.Parse(await resp.Content.ReadAsStringAsync()).RootElement;
+        Assert.Equal("Minimal", GetStr(json, "name"));
+        Assert.Equal("Active", GetStr(json, "status"));
+        // characterTraits defaults to [] on create when not provided
+        Assert.Contains("[]", GetNested(json, "characterTraits") ?? "");
+    }
+}

GerbilManagerWebAPI/Dtos/ApiDtos.cs

@@ -59,8 +59,8 @@ namespace GerbilManagerWebAPI.Dtos
     // Request DTOs -----------------------------------------------------------
 
     public record GerbilInput(
-        string Name,
-        Gender Gender,
+        string? Name,
+        Gender? Gender,
         GerbilStatus? Status,
         Guid? LitterId,
         Guid? OriginContactId,

GerbilManagerWebAPI/Endpoints/GerbilEndpoints.cs

@@ -39,19 +39,18 @@ namespace GerbilManagerWebAPI.Endpoints
                 if (string.IsNullOrWhiteSpace(input.Name))
                     return TypedResults.ValidationProblem(new Dictionary<string, string[]> { ["name"] = ["Name is required."] });
 
-                var g = new Gerbil { Id = Guid.NewGuid(), Name = input.Name };
+                var g = new Gerbil { Id = Guid.NewGuid(), Name = input.Name! };
                 Apply(g, input, isCreate: true);
                 db.Gerbils.Add(g);
                 await db.SaveChangesAsync();
                 return TypedResults.Created($"/gerbils/{g.Id}", ToDto(g));
             });
 
-            // PUT /gerbils/{id}
+            // PUT /gerbils/{id}  — PATCH semantics: omitted/null fields keep the stored value.
             group.MapPut("/{id:guid}", async Task<Results<NoContent, NotFound>> (Guid id, GerbilInput input, ApplicationContext db) =>
             {
                 var g = await db.Gerbils.FirstOrDefaultAsync(x => x.Id == id);
                 if (g is null) return TypedResults.NotFound();
-                g.Name = input.Name;
                 Apply(g, input, isCreate: false);
                 await db.SaveChangesAsync();
                 return TypedResults.NoContent();
@@ -77,27 +76,34 @@ namespace GerbilManagerWebAPI.Endpoints
             return app;
         }
 
+        // CR-2 FIX: PATCH semantics — every omitted/null field keeps the stored value.
+        // Prevents silent data loss when the frontend sends partial bodies (ForSale toggle,
+        // Charakterbogen save, any partial updateGerbil call). On create, supply safe defaults
+        // for fields the frontend omits. A non-null input value always wins (including explicit
+        // nulls — callers that want to clear a nullable field must send a full object; a
+        // dedicated PATCH endpoint can be added later if point-clear is needed).
         private static void Apply(Gerbil g, GerbilInput i, bool isCreate)
         {
-            g.Gender = i.Gender;
+            if (!string.IsNullOrWhiteSpace(i.Name)) g.Name = i.Name!;
+            g.Gender = i.Gender ?? (isCreate ? Gender.unknown : g.Gender);
             g.Status = i.Status ?? (isCreate ? GerbilStatus.Active : g.Status);
-            g.LitterId = i.LitterId;
-            g.OriginContactId = i.OriginContactId;
-            g.ReceiverContactId = i.ReceiverContactId;
-            g.EnclosureId = i.EnclosureId;
-            g.ColorVarietyId = i.ColorVarietyId;
-            g.DateOfBirth = i.DateOfBirth;
-            g.DateOfDeath = i.DateOfDeath;
-            g.CauseOfDeath = i.CauseOfDeath;
-            g.GoHomeDate = i.GoHomeDate;
-            g.Genotype = i.Genotype;
-            g.Notes = i.Notes;
-            g.ImportSource = i.ImportSource;
-            g.ExternalRef = i.ExternalRef;
-            g.OriginBreeder = i.OriginBreeder;
-            g.CharacterTraits = i.CharacterTraits ?? new List<string>();
-            g.CharacterNote = i.CharacterNote;
-            g.IsDeaf = i.IsDeaf;
+            g.LitterId = i.LitterId ?? g.LitterId;
+            g.OriginContactId = i.OriginContactId ?? g.OriginContactId;
+            g.ReceiverContactId = i.ReceiverContactId ?? g.ReceiverContactId;
+            g.EnclosureId = i.EnclosureId ?? g.EnclosureId;
+            g.ColorVarietyId = i.ColorVarietyId ?? g.ColorVarietyId;
+            g.DateOfBirth = i.DateOfBirth ?? g.DateOfBirth;
+            g.DateOfDeath = i.DateOfDeath ?? g.DateOfDeath;
+            g.CauseOfDeath = i.CauseOfDeath ?? g.CauseOfDeath;
+            g.GoHomeDate = i.GoHomeDate ?? g.GoHomeDate;
+            g.Genotype = i.Genotype ?? g.Genotype;
+            g.Notes = i.Notes ?? g.Notes;
+            g.ImportSource = i.ImportSource ?? g.ImportSource;
+            g.ExternalRef = i.ExternalRef ?? g.ExternalRef;
+            g.OriginBreeder = i.OriginBreeder ?? g.OriginBreeder;
+            g.CharacterTraits = i.CharacterTraits ?? g.CharacterTraits;
+            g.CharacterNote = i.CharacterNote ?? g.CharacterNote;
+            g.IsDeaf = i.IsDeaf ?? g.IsDeaf;
             g.IsResident = i.IsResident ?? (isCreate ? true : g.IsResident);
         }
 

gerbil-manager-web/e2e/mock-data.ts

@@ -149,6 +149,8 @@ export function seedDb(): MockDb {
       enclosureId: 'enc-leer',
       notes: 'neugieriger Entdecker',
     },
+    // UI-POLISH-1: Import-Stub ohne Namen — testet den '(ohne Namen)'-Platzhalter in Liste + Detail.
+    gerbil('nameless-stub', '', 'male', '2023-01-01', null, null),
   ]
 
   const litters: Litter[] = [

gerbil-manager-web/e2e/stammbaum.spec.ts

@@ -53,3 +53,12 @@ test('unbekanntes Tier zeigt den deutschen Nicht-gefunden-Zustand', async ({ pag
   await page.goto('/rennmaeuse/gibt-es-nicht/stammbaum')
   await expect(page.getByText(t.notFound).or(page.getByText(de.api.errors.notFound))).toBeVisible()
 })
+
+test('Namenloser Ahne zeigt Platzhalter in der Stammbaum-Karte (UI-POLISH-2)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/nameless-stub/stammbaum')
+  // Titel zeigt '(ohne Namen)'
+  await expect(page.getByRole('heading', { name: t.titleFor(de.pages.gerbils.nameless) })).toBeVisible()
+  // Karte selbst zeigt '(ohne Namen)' statt leer
+  await expect(page.locator('.pedigree-card__nametext')).toHaveText(de.pages.gerbils.nameless)
+})

gerbil-manager-web/e2e/tiere.spec.ts

@@ -127,6 +127,19 @@ test('Detailseite: Herkunft zeigt Kontaktlink wenn originContactId gesetzt (WURF
   await expect(originLink).toHaveAttribute('href', '/kontakte/con-meier')
 })
 
+test('Namenlose Tiere zeigen Platzhalter in der Liste (UI-POLISH-1)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse')
+  // 'nameless-stub' hat name='' → Platzhalter '(ohne Namen)' soll als Link sichtbar sein
+  await expect(page.getByRole('link', { name: de.pages.gerbils.nameless })).toBeVisible()
+})
+
+test('Namenlose Tiere zeigen Platzhalter im Detail-Header (UI-POLISH-1)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/nameless-stub')
+  await expect(page.getByRole('heading', { name: de.pages.gerbils.nameless })).toBeVisible()
+})
+
 test('Tier bearbeiten — Notizen ändern', async ({ page }) => {
   skipUnlessMock()
   await page.goto('/rennmaeuse/kruemel/bearbeiten')
@@ -136,3 +149,26 @@ test('Tier bearbeiten — Notizen ändern', async ({ page }) => {
   await expect(page.getByRole('heading', { name: 'Krümel' })).toBeVisible()
   await expect(page.getByText('Sehr zutraulich.')).toBeVisible()
 })
+
+test('Tier bearbeiten — originBreeder Freitext round-trip (FORM-FIELDS-1)', async ({ page }) => {
+  skipUnlessMock()
+  // Fridolin hat originBreeder='Zoohandlung Meier', kein originContactId → Freitext-Feld vorbelegt
+  await page.goto('/rennmaeuse/fridolin/bearbeiten')
+  await expect(page.getByLabel(t.fields.originBreeder)).toHaveValue('Zoohandlung Meier')
+  await page.getByLabel(t.fields.originBreeder).fill('Neue Musterzucht')
+  await page.getByRole('button', { name: t.form.save, exact: true }).click()
+  // Detailseite: Herkunft zeigt den neuen Wert (kein Contact → originBreeder-Text)
+  await expect(page.getByText('Neue Musterzucht')).toBeVisible()
+})
+
+test('Tier bearbeiten — isDeaf Tristate round-trip (FORM-FIELDS-1)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/kruemel/bearbeiten')
+  // Standard: Unbekannt (null → value='')
+  await expect(page.getByLabel(t.fields.isDeaf)).toHaveValue('')
+  await page.getByLabel(t.fields.isDeaf).selectOption({ label: t.form.isDeafYes })
+  await page.getByRole('button', { name: t.form.save, exact: true }).click()
+  // Zurück zur Bearbeiten-Seite: Wert muss erhalten sein
+  await page.goto('/rennmaeuse/kruemel/bearbeiten')
+  await expect(page.getByLabel(t.fields.isDeaf)).toHaveValue('true')
+})

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

@@ -54,6 +54,8 @@ export interface Gerbil {
    * as resident (backend default true).
    */
   isResident?: boolean
+  /** FORM-FIELDS-1: true=gehörlos, false=hörend, null=unbekannt. */
+  isDeaf?: boolean | null
 }
 
 /** Payload for POST /gerbils. */
@@ -76,6 +78,7 @@ export interface CreateGerbil {
   characterTraits?: string[] | null
   characterNote?: string | null
   isResident?: boolean
+  isDeaf?: boolean | null
 }
 
 /** Payload for PUT /gerbils/{id} (all optional / partial update). */

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

@@ -1,5 +1,7 @@
 import { useState } from 'react'
 import { de } from '../strings/de'
+
+const nameless = de.pages.gerbils.nameless
 import { listGerbils } from '../api/gerbils'
 import { andFilter, condition } from '../api/gridify'
 import type { Gender, Gerbil, Paged } from '../api/types'
@@ -62,7 +64,7 @@ export default function AnimalPicker({ gender, onPick }: AnimalPickerProps) {
                   setOpen(false)
                 }}
               >
-                {g.name}
+                {g.name || nameless}
               </button>
             </li>
           ))}

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

@@ -102,7 +102,7 @@ export default function GerbilDetailPage() {
       <header className="page-head">
         <div>
           <GerbilProfilePhoto gerbilId={g.id} />
-          <h2>{g.name}</h2>
+          <h2>{g.name || de.pages.gerbils.nameless}</h2>
           <span className={`badge badge--${g.status.toLowerCase()}`}>{statusLabel(g.status)}</span>
           {g.isResident === false && (
             <span className="badge badge--external" title={de.pages.gerbils.externalTitle}>
@@ -153,7 +153,7 @@ export default function GerbilDetailPage() {
         {g.status === 'Deceased' && (
           <>
             <Row label={t.fields.dateOfDeath} value={formatDate(g.dateOfDeath)} />
-            <Row label={t.fields.causeOfDeath} value={g.causeOfDeath} />
+            <Row label={t.fields.causeOfDeath} value={g.causeOfDeath || null} />
           </>
         )}
         {g.status === 'GivenAway' && (
@@ -190,7 +190,7 @@ export default function GerbilDetailPage() {
           }
         />
         <Row label={t.fields.receiver} value={lookup(contactName, g.receiverContactId)} />
-        <Row label={t.fields.notes} value={g.notes} />
+        <Row label={t.fields.notes} value={g.notes || null} />
       </dl>
 
       <h3>{t.detail.genetics}</h3>

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

@@ -21,10 +21,12 @@ interface FormState {
   enclosureId: string
   litterId: string
   originContactId: string
+  originBreeder: string
   receiverContactId: string
   genotype: string
   notes: string
   isResident: boolean
+  isDeaf: boolean | null
 }
 
 const EMPTY: FormState = {
@@ -39,10 +41,12 @@ const EMPTY: FormState = {
   enclosureId: '',
   litterId: '',
   originContactId: '',
+  originBreeder: '',
   receiverContactId: '',
   genotype: '',
   notes: '',
   isResident: true,
+  isDeaf: null,
 }
 
 function formFromGerbil(g: {
@@ -57,10 +61,12 @@ function formFromGerbil(g: {
   enclosureId: string | null
   litterId: string | null
   originContactId: string | null
+  originBreeder?: string | null
   receiverContactId: string | null
   genotype: string | null
   notes: string | null
   isResident?: boolean | null
+  isDeaf?: boolean | null
 }): FormState {
   return {
     name: g.name,
@@ -74,10 +80,12 @@ function formFromGerbil(g: {
     enclosureId: g.enclosureId ?? '',
     litterId: g.litterId ?? '',
     originContactId: g.originContactId ?? '',
+    originBreeder: g.originBreeder ?? '',
     receiverContactId: g.receiverContactId ?? '',
     genotype: g.genotype ?? '',
     notes: g.notes ?? '',
     isResident: g.isResident ?? true,
+    isDeaf: g.isDeaf ?? null,
   }
 }
 
@@ -167,10 +175,12 @@ export default function GerbilFormPage() {
       enclosureId: nn(form.enclosureId),
       litterId: nn(form.litterId),
       originContactId: nn(form.originContactId),
+      originBreeder: nn(form.originBreeder),
       receiverContactId: nn(form.receiverContactId),
       genotype: nn(form.genotype),
       notes: nn(form.notes),
       isResident: form.isResident,
+      isDeaf: form.isDeaf,
     }
     const result = await mutation.run(body)
     if (result.ok) navigate(`/rennmaeuse/${result.value.id}`)
@@ -326,6 +336,16 @@ export default function GerbilFormPage() {
           </select>
         </label>
 
+        <label className="field">
+          <span>{t.fields.originBreeder}</span>
+          <input
+            className="input"
+            value={form.originBreeder}
+            placeholder="z. B. Zucht der Kleinen Chaoten"
+            onChange={(e) => set('originBreeder', e.target.value)}
+          />
+        </label>
+
         <label className="field">
           <span>{t.fields.receiver}</span>
           <select
@@ -360,6 +380,21 @@ export default function GerbilFormPage() {
           <textarea value={form.notes} onChange={(e) => set('notes', e.target.value)} />
         </label>
 
+        <label className="field">
+          <span>{t.fields.isDeaf}</span>
+          <select
+            value={form.isDeaf === null ? '' : String(form.isDeaf)}
+            onChange={(e) => {
+              const v = e.target.value
+              set('isDeaf', v === '' ? null : v === 'true')
+            }}
+          >
+            <option value="">{t.form.isDeafUnknown}</option>
+            <option value="true">{t.form.isDeafYes}</option>
+            <option value="false">{t.form.isDeafNo}</option>
+          </select>
+        </label>
+
         <label className="field field--check" title={t.form.isResidentHint}>
           <span>{t.form.isResidentLabel}</span>
           <input

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

@@ -256,11 +256,11 @@ export default function GerbilsPage() {
                 className="gerbil-row__check"
                 checked={selected.has(g.id)}
                 onChange={() => toggleSelect(g.id)}
-                aria-label={g.name}
+                aria-label={g.name || t.nameless}
               />
               <Link to={`/rennmaeuse/${g.id}`} className="gerbil-card">
                 <span className="gerbil-card__name">
-                  {g.name}
+                  {g.name || t.nameless}
                   {g.isResident === false && (
                     <span className="badge badge--external" title={t.externalTitle}>
                       {t.externalBadge}

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

@@ -276,7 +276,7 @@ export default function StammbaumPage() {
     <>
       <section className="page stammbaum-screen">
         <header className="page-head">
-          <h2>{t.titleFor(root.gerbil.name)}</h2>
+          <h2>{t.titleFor(root.gerbil.name || de.pages.gerbils.nameless)}</h2>
           <div className="head-actions">
             <Link to={`/rennmaeuse/${root.gerbil.id}`} className="btn">
               {t.backToAnimal}
@@ -377,7 +377,7 @@ function PedigreeCard({
       <div className="pedigree-card__body">
         <div className="pedigree-card__name">
           <SexIcon gender={g.gender} />
-          <span className="pedigree-card__nametext">{g.name}</span>
+          <span className="pedigree-card__nametext">{g.name || de.pages.gerbils.nameless}</span>
         </div>
         {farbschlag && (
           <span
@@ -439,7 +439,7 @@ function PrintPedigree({
   return (
     <div className="stammbaum-print">
       <header className="stammbaum-print__head">
-        <h1>{t.titleFor(root.gerbil.name)}</h1>
+        <h1>{t.titleFor(root.gerbil.name || de.pages.gerbils.nameless)}</h1>
         <p className="stammbaum-print__meta">
           {t.inbreeding.label}: {inbreedingText} · {t.printView.createdOn} {today}
         </p>
@@ -494,7 +494,7 @@ function PrintCell({
     <div className={base} style={style}>
       <div className="stammbaum-print__name">
         {sexSymbol}
-        {g.name}
+        {g.name || de.pages.gerbils.nameless}
       </div>
       {g.dateOfBirth && (
         <div className="stammbaum-print__sub">

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

@@ -326,7 +326,7 @@ export default function VertragWizardPage() {
                     checked={selectedIds.has(g.id)}
                     onChange={() => toggleAnimal(g.id)}
                   />
-                  <span className="wizard-pick__name">{g.name}</span>
+                  <span className="wizard-pick__name">{g.name || de.pages.gerbils.nameless}</span>
                   <span className="wizard-pick__meta">
                     {[
                       genderLabel(g.gender),
@@ -396,7 +396,7 @@ export default function VertragWizardPage() {
             </div>
             <div className="def-row">
               <dt>{de.pages.vertraege.fields.animals}</dt>
-              <dd>{selectedAnimals.map((g) => g.name).join(', ')}</dd>
+              <dd>{selectedAnimals.map((g) => g.name || de.pages.gerbils.nameless).join(', ')}</dd>
             </div>
             <div className="def-row">
               <dt>{de.pages.vertraege.fields.price}</dt>

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

@@ -71,9 +71,9 @@ export default function WurfFormPage() {
       name: l.name,
       date: l.date ?? '',
       fatherId: l.fatherId ?? '',
-      fatherName: l.fatherId ? (nameById.get(l.fatherId) ?? '') : '',
+      fatherName: l.fatherId ? (nameById.get(l.fatherId) || de.pages.gerbils.nameless) : '',
       motherId: l.motherId ?? '',
-      motherName: l.motherId ? (nameById.get(l.motherId) ?? '') : '',
+      motherName: l.motherId ? (nameById.get(l.motherId) || de.pages.gerbils.nameless) : '',
       totalBorn: l.totalBorn != null ? String(l.totalBorn) : '',
       expectedGoHomeDate: l.expectedGoHomeDate ?? '',
       notes: l.notes ?? '',
@@ -178,7 +178,7 @@ export default function WurfFormPage() {
           ) : (
             <AnimalPicker
               gender="male"
-              onPick={(g) => setForm((f) => ({ ...f, fatherId: g.id, fatherName: g.name }))}
+              onPick={(g) => setForm((f) => ({ ...f, fatherId: g.id, fatherName: g.name || de.pages.gerbils.nameless }))}
             />
           )}
         </fieldset>
@@ -199,7 +199,7 @@ export default function WurfFormPage() {
           ) : (
             <AnimalPicker
               gender="female"
-              onPick={(g) => setForm((f) => ({ ...f, motherId: g.id, motherName: g.name }))}
+              onPick={(g) => setForm((f) => ({ ...f, motherId: g.id, motherName: g.name || de.pages.gerbils.nameless }))}
             />
           )}
         </fieldset>

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

@@ -38,6 +38,7 @@ export const de = {
   pages: {
     gerbils: {
       title: 'Rennmäuse',
+      nameless: '(ohne Namen)',
       // Liste
       newButton: 'Neue Rennmaus',
       empty: 'Keine Rennmäuse gefunden.',
@@ -79,6 +80,8 @@ export const de = {
         enclosure: 'Gehege',
         colorVariety: 'Farbschlag',
         origin: 'Herkunft',
+        originBreeder: 'Herkunft (Freitext)',
+        isDeaf: 'Gehörlos',
         receiver: 'Abnehmer',
         genotype: 'Genotyp',
         notes: 'Notizen',
@@ -113,6 +116,9 @@ export const de = {
         // BESTAND-FILTER: Zugehörigkeit zum eigenen Bestand (sonst externe Ahne)
         isResidentLabel: 'Gehört zum eigenen Bestand',
         isResidentHint: 'Abwählen für externe Ahnen, die nur für den Stammbaum erfasst sind.',
+        isDeafUnknown: 'Unbekannt',
+        isDeafYes: 'Ja',
+        isDeafNo: 'Nein',
         save: 'Speichern',
         cancel: 'Abbrechen',
         saving: 'Speichern …',