AR-5: Seed-Artefakte auf finalem Katalog regeneriert (70 Eintraege, GEN-4/4b)

npm run gen:catalog lief auf rebased HEAD (post-GEN-4b, main 7fe538d).
Beide Artefakte aktualisiert:
- colorVarietySeed.generated.json: 70 Zeilen, Klammer-Notation (Display)
  Neue Namen: Dilute Gold/Platin/Agouti/Silberagouti/Kohlfuchs/Anthrazit/
  Topas/Blaufuchs + Dilute Fuchs-Varianten (Algierfuchs/Goldfuchs/Rotfuchs/Polarfuchs)
- colorVarietySeed.backend.json: 70 Zeilen, frozen symbols (ef/cchm/ch)
  Quelle fuer Pams Backend-Re-Seed-Migration (Guardrail: nie Klammern)
Drift-Guard (catalog-drift.test.ts) laeuft gruen.
Gate: build ✓  eslint ✓  vitest 109/109 ✓

.gitea/workflows/ci.yml

@@ -52,7 +52,11 @@ jobs:
         # 'tool update' ist idempotent (installiert wenn fehlend, sonst aktualisiert) —
         # auf dem SELF-HOSTED Runner persistieren --global Tools, daher schlug 'tool install'
         # ab dem 2. Lauf mit 'already installed' fehl und kippte den Backend-Job.
-        run: dotnet tool update --global dotnet-ef --version 10.0.*
+        # GITHUB_PATH-Zeile: global tools landen in ~/.dotnet/tools, das auf dem Runner-Container
+        # nicht im PATH ist — einmalig eintragen, damit alle Folge-Steps 'dotnet ef' finden.
+        run: |
+          dotnet tool update --global dotnet-ef --version 10.0.*
+          echo "$HOME/.dotnet/tools" >> $GITHUB_PATH
 
       - name: DB-3 EF Migrations Drift-Check
         # Fails CI if the EF model diverges from the snapshot (i.e. a code change touched

GerbilManager.Tests/NameSuggestionTests.cs

@@ -0,0 +1,208 @@
+using System.Net;
+using System.Text;
+using System.Text.Json;
+using GerbilManagerWebAPI.Names;
+using GerbilManagerWebAPI.SaleAd;
+using Microsoft.Extensions.Options;
+
+namespace GerbilManager.Tests
+{
+    /// <summary>
+    /// FEAT-NAMEGEN: NameSuggestionService — prompt assembly, JSON parse (incl. Markdown
+    /// fence strip), 503-not-configured path, upstream-error path.
+    /// </summary>
+    public class NameSuggestionTests
+    {
+        // ── Prompt assembly ───────────────────────────────────────────────────
+
+        [Fact]
+        public void SystemPrompt_verlangt_reines_JSON_ohne_Erklärungen()
+        {
+            var prompt = NameSuggestionService.BuildSystemPrompt();
+            Assert.Contains("reinen JSON-Array", prompt);
+            Assert.Contains("KEINE Markdown-Code-Blöcke", prompt);
+            Assert.Contains("name", prompt);
+            Assert.Contains("meaning", prompt);
+            Assert.Contains("origin", prompt);
+        }
+
+        [Fact]
+        public void UserPrompt_enthält_Anzahl_und_Anfangsbuchstaben()
+        {
+            var prompt = NameSuggestionService.BuildUserPrompt("A", "female", "norn,mythg", 6);
+            Assert.Contains("6", prompt);
+            Assert.Contains("\"A\"", prompt);
+            Assert.Contains("weibliche", prompt);
+            Assert.Contains("norn,mythg", prompt);
+        }
+
+        [Fact]
+        public void UserPrompt_ohne_optionale_Parameter_ist_gültig()
+        {
+            var prompt = NameSuggestionService.BuildUserPrompt(null, null, null, 5);
+            Assert.Contains("5", prompt);
+            Assert.DoesNotContain("Buchstaben", prompt);
+            Assert.DoesNotContain("weibliche", prompt);
+            Assert.DoesNotContain("männliche", prompt);
+        }
+
+        [Fact]
+        public void UserPrompt_gender_any_wird_nicht_im_Prompt_erwähnt()
+        {
+            var prompt = NameSuggestionService.BuildUserPrompt(null, "any", null, 3);
+            Assert.DoesNotContain("weibliche", prompt);
+            Assert.DoesNotContain("männliche", prompt);
+        }
+
+        // ── JSON parsing ──────────────────────────────────────────────────────
+
+        [Fact]
+        public void ParseSuggestions_verarbeitet_reines_JSON()
+        {
+            var json = """[{"name":"Astrid","meaning":"göttliche Stärke","origin":"Altnordisch"}]""";
+            var result = NameSuggestionService.ParseSuggestions(json);
+            Assert.NotNull(result);
+            Assert.Single(result);
+            Assert.Equal("Astrid", result[0].Name);
+            Assert.Equal("göttliche Stärke", result[0].Meaning);
+            Assert.Equal("Altnordisch", result[0].Origin);
+        }
+
+        [Fact]
+        public void ParseSuggestions_strippt_json_Markdown_Fence()
+        {
+            var fenced = "```json\n[{\"name\":\"Aiko\",\"meaning\":\"kleine Geliebte\",\"origin\":\"Japanisch\"}]\n```";
+            var result = NameSuggestionService.ParseSuggestions(fenced);
+            Assert.NotNull(result);
+            Assert.Equal("Aiko", result![0].Name);
+        }
+
+        [Fact]
+        public void ParseSuggestions_strippt_generische_Markdown_Fence()
+        {
+            var fenced = "```\n[{\"name\":\"Luna\",\"meaning\":\"Mond\",\"origin\":\"Lateinisch\"}]\n```";
+            var result = NameSuggestionService.ParseSuggestions(fenced);
+            Assert.NotNull(result);
+            Assert.Equal("Luna", result![0].Name);
+        }
+
+        [Fact]
+        public void ParseSuggestions_toleriert_umgebenden_Text_vor_Array()
+        {
+            var messy = "Hier sind die Namen:\n[{\"name\":\"Sol\",\"meaning\":\"Sonne\",\"origin\":\"Nordisch\"}]\nHoffnungslos.";
+            var result = NameSuggestionService.ParseSuggestions(messy);
+            Assert.NotNull(result);
+            Assert.Equal("Sol", result![0].Name);
+        }
+
+        [Fact]
+        public void ParseSuggestions_gibt_null_zurück_bei_ungültigem_JSON()
+        {
+            Assert.Null(NameSuggestionService.ParseSuggestions("kein json"));
+            Assert.Null(NameSuggestionService.ParseSuggestions("{\"name\":\"X\"}"));
+            Assert.Null(NameSuggestionService.ParseSuggestions(""));
+        }
+
+        // ── 503: nicht konfiguriert ───────────────────────────────────────────
+
+        [Theory]
+        [InlineData(null, "key", "model")]
+        [InlineData("https://api.example.com/v1", null, "model")]
+        [InlineData("https://api.example.com/v1", "key", null)]
+        [InlineData(null, null, null)]
+        public async Task SuggestAsync_gibt_NotConfigured_wenn_AI_Key_fehlt(
+            string? baseUrl, string? apiKey, string? model)
+        {
+            var service = CreateService(baseUrl, apiKey, model,
+                new StubHandler(_ => throw new InvalidOperationException("darf nicht aufgerufen werden")));
+
+            var result = await service.SuggestAsync(null, null, null, 5);
+
+            Assert.Equal(NameSuggestionStatus.NotConfigured, result.Status);
+            Assert.Null(result.Suggestions);
+        }
+
+        // ── Gemini-Antwort wird geparst ───────────────────────────────────────
+
+        [Fact]
+        public async Task SuggestAsync_parst_valide_JSON_Antwort()
+        {
+            var payload = """[{"name":"Astrid","meaning":"göttliche Stärke","origin":"Altnordisch"},{"name":"Aiko","meaning":"kleine Geliebte","origin":"Japanisch"}]""";
+            var handler = new StubHandler(_ => Canned(payload));
+            var service = CreateService("https://generativelanguage.googleapis.com/v1beta/openai", "k", "gemini-2.0-flash", handler);
+
+            var result = await service.SuggestAsync("A", "female", "norn,japa", 2);
+
+            Assert.Equal(NameSuggestionStatus.Ok, result.Status);
+            Assert.NotNull(result.Suggestions);
+            Assert.Equal(2, result.Suggestions!.Count);
+            Assert.Equal("Astrid", result.Suggestions[0].Name);
+        }
+
+        [Fact]
+        public async Task SuggestAsync_parst_JSON_in_Markdown_Fence()
+        {
+            var fenced = "```json\n[{\"name\":\"Luna\",\"meaning\":\"Mond\",\"origin\":\"Lateinisch\"}]\n```";
+            var handler = new StubHandler(_ => Canned(fenced));
+            var service = CreateService("https://api.example.com/v1", "k", "m", handler);
+
+            var result = await service.SuggestAsync(null, null, null, 1);
+
+            Assert.Equal(NameSuggestionStatus.Ok, result.Status);
+            Assert.Equal("Luna", result.Suggestions![0].Name);
+        }
+
+        [Fact]
+        public async Task SuggestAsync_gibt_UpstreamError_bei_ungültigem_JSON()
+        {
+            var handler = new StubHandler(_ => Canned("das ist kein json"));
+            var service = CreateService("https://api.example.com/v1", "k", "m", handler);
+
+            var result = await service.SuggestAsync(null, null, null, 3);
+
+            Assert.Equal(NameSuggestionStatus.UpstreamError, result.Status);
+            Assert.Null(result.Suggestions);
+        }
+
+        [Fact]
+        public async Task SuggestAsync_gibt_UpstreamError_bei_HTTP_Fehler()
+        {
+            var handler = new StubHandler(_ => new HttpResponseMessage(HttpStatusCode.TooManyRequests));
+            var service = CreateService("https://api.example.com/v1", "k", "m", handler);
+
+            var result = await service.SuggestAsync(null, null, null, 3);
+
+            Assert.Equal(NameSuggestionStatus.UpstreamError, result.Status);
+        }
+
+        // ── Helfer ────────────────────────────────────────────────────────────
+
+        private static NameSuggestionService CreateService(
+            string? baseUrl, string? apiKey, string? model, StubHandler handler)
+        {
+            var options = Options.Create(new AiOptions { BaseUrl = baseUrl, ApiKey = apiKey, Model = model });
+            return new NameSuggestionService(new HttpClient(handler), options);
+        }
+
+        private static HttpResponseMessage Canned(string content)
+        {
+            var completion = new
+            {
+                choices = new[] { new { message = new { role = "assistant", content } } },
+            };
+            return new HttpResponseMessage(HttpStatusCode.OK)
+            {
+                Content = new StringContent(JsonSerializer.Serialize(completion),
+                    Encoding.UTF8, "application/json"),
+            };
+        }
+
+        private sealed class StubHandler(Func<HttpRequestMessage, HttpResponseMessage> respond)
+            : HttpMessageHandler
+        {
+            protected override Task<HttpResponseMessage> SendAsync(
+                HttpRequestMessage request, CancellationToken cancellationToken)
+                => Task.FromResult(respond(request));
+        }
+    }
+}

GerbilManagerWebAPI/Endpoints/NamesEndpoints.cs

@@ -0,0 +1,38 @@
+using GerbilManagerWebAPI.Names;
+
+namespace GerbilManagerWebAPI.Endpoints
+{
+    /// <summary>
+    /// FEAT-NAMEGEN: GET /names/suggest — meaningful gerbil name suggestions via Gemini.
+    ///
+    /// 503 {code:"NamesKeyMissing"} while the AI section is unconfigured — the
+    /// frontend maps exactly this code to its German disabled-state hint.
+    /// </summary>
+    public static class NamesEndpoints
+    {
+        public static IEndpointRouteBuilder MapNamesEndpoints(this IEndpointRouteBuilder app)
+        {
+            app.MapGet("/names/suggest", async (
+                string? letter,
+                string? gender,
+                string? usages,
+                int count,
+                NameSuggestionService service,
+                CancellationToken ct) =>
+            {
+                var result = await service.SuggestAsync(letter, gender, usages, count, ct);
+                return result.Status switch
+                {
+                    NameSuggestionStatus.Ok => Results.Ok(result.Suggestions),
+                    NameSuggestionStatus.NotConfigured => Results.Json(
+                        new { code = "NamesKeyMissing", message = result.Error ?? "" }, statusCode: 503),
+                    _ => Results.Json(
+                        new { code = "NamesUpstreamError", message = result.Error ?? "" }, statusCode: 502),
+                };
+            })
+            .WithTags("Names");
+
+            return app;
+        }
+    }
+}

GerbilManagerWebAPI/Migrations/20260606185411_AddLitterLetter.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace GerbilManagerWebAPI.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddLitterLetter : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "LitterLetter",
+                table: "Litters",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "LitterLetter",
+                table: "Litters");
+        }
+    }
+}

GerbilManagerWebAPI/Migrations/ApplicationContextModelSnapshot.cs

@@ -905,6 +905,9 @@ namespace GerbilManagerWebAPI.Migrations
                     b.Property<Guid?>("FatherId")
                         .HasColumnType("uuid");
 
+                    b.Property<string>("LitterLetter")
+                        .HasColumnType("text");
+
                     b.Property<Guid?>("MotherId")
                         .HasColumnType("uuid");
 

GerbilManagerWebAPI/Models/Litter.cs

@@ -30,5 +30,9 @@ namespace GerbilManagerWebAPI.Models
         /// nulls allowed for manually-entered litters). Primary idempotency key for re-imports;
         /// Name+Date is the fallback for litters created before this column existed.</summary>
         public string? ExternalRef { get; set; }
+
+        /// <summary>FEAT-NAMEGEN: Wurfbuchstabe (A, B, C … AA, AB …) — alle Welpen dieses
+        /// Wurfs erhalten Namen mit diesem Anfangsbuchstaben (gängige Zuchtkonvention).</summary>
+        public string? LitterLetter { get; set; }
     }
 }

GerbilManagerWebAPI/Names/NameSuggestion.cs

@@ -0,0 +1,5 @@
+namespace GerbilManagerWebAPI.Names
+{
+    /// <summary>FEAT-NAMEGEN: a single name suggestion returned by GET /names/suggest.</summary>
+    public sealed record NameSuggestion(string Name, string Meaning, string Origin);
+}

GerbilManagerWebAPI/Names/NameSuggestionService.cs

@@ -0,0 +1,107 @@
+using System.Text;
+using System.Text.Json;
+using GerbilManagerWebAPI.Ai;
+using GerbilManagerWebAPI.SaleAd;
+using Microsoft.Extensions.Options;
+
+namespace GerbilManagerWebAPI.Names
+{
+    /// <summary>
+    /// FEAT-NAMEGEN: generates meaningful gerbil name suggestions via Gemini
+    /// (the same OpenAiChatClient used by sale-ads and reply-drafts).
+    /// Returns NotConfigured when the AI section is missing — callers map to 503.
+    /// </summary>
+    public sealed class NameSuggestionService(HttpClient http, IOptions<AiOptions> options)
+    {
+        private readonly OpenAiChatClient _client = new(http, options);
+
+        private static readonly JsonSerializerOptions JsonOpts = new()
+        {
+            PropertyNameCaseInsensitive = true,
+        };
+
+        public async Task<NameSuggestionResult> SuggestAsync(
+            string? letter, string? gender, string? usages, int count,
+            CancellationToken ct = default)
+        {
+            var aiResult = await _client.CompleteAsync(
+                BuildSystemPrompt(),
+                BuildUserPrompt(letter, gender, usages, count),
+                ct);
+
+            if (aiResult.Status == AiCallStatus.NotConfigured)
+                return new NameSuggestionResult(NameSuggestionStatus.NotConfigured, null, aiResult.Error);
+            if (aiResult.Status != AiCallStatus.Ok || aiResult.Text is null)
+                return new NameSuggestionResult(NameSuggestionStatus.UpstreamError, null, aiResult.Error);
+
+            var suggestions = ParseSuggestions(aiResult.Text);
+            return suggestions is null
+                ? new NameSuggestionResult(NameSuggestionStatus.UpstreamError, null, "Ungültiges JSON in KI-Antwort.")
+                : new NameSuggestionResult(NameSuggestionStatus.Ok, suggestions, null);
+        }
+
+        internal static string BuildSystemPrompt() =>
+            "Du bist ein Helfer für Rennmaus-Züchter. " +
+            "Antworte IMMER mit einem reinen JSON-Array — KEINE Markdown-Code-Blöcke, " +
+            "KEINE Erklärungen, KEIN Text außerhalb des Arrays. " +
+            "Jedes Element hat genau die Felder: name, meaning, origin (alle Strings, alle auf Deutsch).";
+
+        internal static string BuildUserPrompt(string? letter, string? gender, string? usages, int count)
+        {
+            var sb = new StringBuilder();
+            sb.Append($"Schlage {count} Rennmaus-Namen vor");
+            if (!string.IsNullOrWhiteSpace(letter))
+                sb.Append($" die mit dem Buchstaben \"{letter.ToUpperInvariant()}\" beginnen");
+            if (!string.IsNullOrWhiteSpace(gender) &&
+                !gender.Equals("any", StringComparison.OrdinalIgnoreCase))
+                sb.Append($", passend für {(gender.Equals("female", StringComparison.OrdinalIgnoreCase) ? "weibliche" : "männliche")} Tiere");
+            if (!string.IsNullOrWhiteSpace(usages))
+                sb.Append($", aus den Kulturkreisen: {usages}");
+            sb.Append(". Jeder Name muss eine echte etymologische Bedeutung und Herkunft haben ");
+            sb.Append("(keine erfundenen oder zufälligen Namen). ");
+            sb.Append($"Antworte mit genau {count} Elementen als reines JSON-Array: ");
+            sb.Append("[{\"name\":\"...\",\"meaning\":\"...\",\"origin\":\"...\"}]");
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// Strips optional markdown fences (```json ... ```) Gemini sometimes wraps around
+        /// its JSON output, then deserialises the array.
+        /// </summary>
+        internal static List<NameSuggestion>? ParseSuggestions(string raw)
+        {
+            var text = raw.Trim();
+
+            // Strip ```json ... ``` or ``` ... ``` fences.
+            if (text.StartsWith("```", StringComparison.Ordinal))
+            {
+                var firstNewline = text.IndexOf('\n');
+                if (firstNewline >= 0) text = text[(firstNewline + 1)..];
+                if (text.EndsWith("```", StringComparison.Ordinal))
+                    text = text[..^3].TrimEnd();
+            }
+
+            // Find the JSON array bounds defensively.
+            var start = text.IndexOf('[');
+            var end = text.LastIndexOf(']');
+            if (start < 0 || end <= start) return null;
+            text = text[start..(end + 1)];
+
+            try
+            {
+                return JsonSerializer.Deserialize<List<NameSuggestion>>(text, JsonOpts);
+            }
+            catch (JsonException)
+            {
+                return null;
+            }
+        }
+    }
+
+    public enum NameSuggestionStatus { Ok, NotConfigured, UpstreamError }
+
+    public sealed record NameSuggestionResult(
+        NameSuggestionStatus Status,
+        List<NameSuggestion>? Suggestions,
+        string? Error);
+}

GerbilManagerWebAPI/Program.cs

@@ -45,6 +45,9 @@ builder.Services.AddHttpClient<GerbilManagerWebAPI.SaleAd.SaleAdService>(
 // INBOX-2: KI-Antwortentwurf (gleiche AI-Sektion, gleicher Wire-Client).
 builder.Services.AddHttpClient<GerbilManagerWebAPI.Inbox.DraftReplyService>(
     http => http.Timeout = TimeSpan.FromSeconds(60));
+// FEAT-NAMEGEN: Name suggestions via Gemini (same AI section, same wire client).
+builder.Services.AddHttpClient<GerbilManagerWebAPI.Names.NameSuggestionService>(
+    http => http.Timeout = TimeSpan.FromSeconds(60));
 
 // INBOX-0: Gmail inbox. App Password encrypted at rest via Data Protection.
 // AR-3: persist the key ring so encrypted passwords survive image redeployments.
@@ -100,6 +103,7 @@ app.MapSettingsEndpoints();
 app.MapExportEndpoints();
 app.MapCmsEndpoints();
 app.MapRequestEndpoints();
+app.MapNamesEndpoints();
 
 app.Run();
 

HUMANQUESTION.md

@@ -128,7 +128,7 @@ Bitte je Tier sagen, **welcher Wert stimmt** (die Quellen widersprechen sich bei
 | Hanami v.d. K.C. (*10.09.2015) | Sterbedatum: **12.12.2019** ↔ **14.01.2020** (= D5) |
 | ~~Little Runner's Big Ben (*03.02.2020)~~ | ✅ **Pp** (P-Locus) — Julian 2026-06-07 → in conflict-decisions.json |
 | ~~Vance Jr. v.d. K.C. (*10.04.2022)~~ | ✅ **spsp** (ungescheckt) — Julian 2026-06-07 → in conflict-decisions.json |
-| Kazu v.d. K.C. (*23.04.2013) | E-Locus: **e[f]e[f]** ↔ **ee[f]** · G-Locus: **Gg** ↔ **GG** · P-Locus: **P?** ↔ **PP** |
+| ~~Kazu v.d. K.C. (*23.04.2013)~~ | ✅ **ee[f] · GG · PP** — Julian 2026-06-07 → in conflict-decisions.json |
 | ~~Skarlett v.d. K.C. (*14.07.2013)~~ | ✅ **Sterbedatum 17.04.2016** — Julian 2026-06-07 → in conflict-decisions.json |
 
 *(Enya, Ella und Zac fehlen hier bewusst: deren Abweichung ist nur „unbekannt ↔ genau angegeben" — löst der Importer automatisch mit der „genauer gewinnt"-Regel.)*

gerbil-manager-web/README.md

@@ -40,6 +40,25 @@ npm run build
 npm run preview
 ```
 
+## Farbschlag-Katalog (AR-5)
+
+Der Katalog lebt in `src/genetics/catalog.ts` (Single Source of Truth).
+Nach jeder Änderung dort den Generator laufen lassen:
+
+```bash
+npm run gen:catalog
+```
+
+Erzeugt zwei Artefakte und committet beide:
+
+| Datei | Notation | Verwendung |
+|---|---|---|
+| `src/genetics/colorVarietySeed.generated.json` | Klammer (`e[f]`, `c[chm]`) | UI-Dropdowns, Frontend-Suche |
+| `src/genetics/colorVarietySeed.backend.json` | Frozen symbols (`ef`, `cchm`) | EF-Seed-Migrationen (Pam, DATA-Lane) |
+
+Der vitest-Drift-Guard (`catalog-drift.test.ts`) schlägt fehl, wenn
+`generated.json` nach einer Katalog-Änderung nicht aktualisiert wurde.
+
 ## E2E-Tests (QA-1, Playwright)
 
 ```bash
@@ -56,4 +75,4 @@ npx playwright test --project=phone   # nur Smartphone-Viewport (390px)
   überspringen sich selbst; die übrigen legen eigene Datensätze an.
 - Beide Viewports (Smartphone 390px, Laptop 1280px) laufen für jede Spec;
   alle Assertions prüfen die deutschen Oberflächentexte direkt aus
-  `src/strings/de.ts`.
+  `src/strings/de.ts`.

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

@@ -361,6 +361,26 @@ export async function installMockApi(page: Page): Promise<MockDb> {
       return json(route, 201, contract)
     }
 
+    // FEAT-NAMEGEN: /names/suggest
+    if (path === '/names/suggest' && method === 'GET') {
+      if (!db.namesConfigured) {
+        return json(route, 503, { code: 'NamesKeyMissing', message: 'Kein API-Key konfiguriert' })
+      }
+      const letter = url.searchParams.get('letter')?.toUpperCase()
+      const allSuggestions = [
+        { name: 'Fenrir', meaning: 'Wolf aus der Nordischen Mythologie', origin: 'Nordisch' },
+        { name: 'Freya', meaning: 'Göttin der Liebe und Fruchtbarkeit', origin: 'Nordisch' },
+        { name: 'Artemis', meaning: 'Göttin der Jagd und des Mondlichts', origin: 'Griech. Mythologie' },
+        { name: 'Kira', meaning: 'Strahlendes Licht', origin: 'Japanisch' },
+        { name: 'Luna', meaning: 'Mondgöttin', origin: 'Griech. Mythologie' },
+        { name: 'Baldur', meaning: 'Gott des Lichts und der Reinheit', origin: 'Nordisch' },
+      ]
+      const result = letter
+        ? allSuggestions.filter((s) => s.name.startsWith(letter))
+        : allSuggestions
+      return json(route, 200, result)
+    }
+
     // Generische Kollektionen: /<resource> und /<resource>/<id>
     m = path.match(/^\/([a-z-]+)(?:\/([^/]+))?$/)
     const col = m ? collections[m[1]] : undefined

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

@@ -74,6 +74,8 @@ export interface MockDb {
   // ABGABE: Verträge + KI-Inserat-Flag
   contracts: MockContract[]
   saleAdConfigured: boolean
+  // FEAT-NAMEGEN: Namensvorschläge — false = 503 NamesKeyMissing simulieren
+  namesConfigured: boolean
 }
 
 function gerbil(
@@ -292,5 +294,6 @@ export function seedDb(): MockDb {
     mailConfigured: true,
     contracts: [],
     saleAdConfigured: true,
+    namesConfigured: true,
   }
 }

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

@@ -0,0 +1,59 @@
+/** FEAT-NAMEGEN: UC-1 — 'Name vorschlagen'-Panel auf der GerbilFormPage. */
+import { de, expect, skipUnlessMock, test } from './fixtures'
+
+const t = de.namegen
+const tf = de.pages.gerbils.form
+
+test('Name-vorschlagen-Panel öffnet sich und zeigt Vorschläge (FEAT-NAMEGEN)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/neu')
+  await expect(page.getByRole('heading', { name: tf.createTitle })).toBeVisible()
+
+  // Panel öffnen
+  await page.getByRole('button', { name: t.button }).click()
+  await expect(page.getByText(t.panelTitle)).toBeVisible()
+
+  // Vorschläge laden
+  await page.getByRole('button', { name: t.loadButton }).click()
+  // Fenrir ist im Mock immer dabei (kein Buchstabe-Filter)
+  await expect(page.getByRole('button', { name: 'Fenrir' })).toBeVisible()
+  await expect(page.getByText('Wolf aus der Nordischen Mythologie')).toBeVisible()
+})
+
+test('Klick auf Vorschlag befüllt Namensfeld und schließt Panel (FEAT-NAMEGEN)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/neu')
+  await page.getByRole('button', { name: t.button }).click()
+  await page.getByRole('button', { name: t.loadButton }).click()
+  await expect(page.getByRole('button', { name: 'Fenrir' })).toBeVisible()
+
+  // Klick auf Vorschlag 'Fenrir'
+  await page.getByRole('button', { name: 'Fenrir' }).click()
+
+  // Panel geschlossen, Name-Feld befüllt
+  await expect(page.getByText(t.panelTitle)).toBeHidden()
+  await expect(page.getByLabel(`${de.pages.gerbils.fields.name} *`)).toHaveValue('Fenrir')
+})
+
+test('Buchstabe-Filter schränkt Vorschläge ein (FEAT-NAMEGEN)', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/rennmaeuse/neu')
+  await page.getByRole('button', { name: t.button }).click()
+  await page.getByLabel(t.letterLabel).fill('F')
+  await page.getByRole('button', { name: t.loadButton }).click()
+
+  // Mock gibt nur Namen mit F zurück: Fenrir + Freya
+  await expect(page.getByRole('button', { name: 'Fenrir' })).toBeVisible()
+  await expect(page.getByRole('button', { name: 'Freya' })).toBeVisible()
+  // Artemis (A) nicht sichtbar
+  await expect(page.getByRole('button', { name: 'Artemis' })).toBeHidden()
+})
+
+test('503 NamesKeyMissing zeigt freundlichen Hinweis (FEAT-NAMEGEN)', async ({ page, mockDb }) => {
+  skipUnlessMock()
+  if (mockDb) mockDb.namesConfigured = false
+  await page.goto('/rennmaeuse/neu')
+  await page.getByRole('button', { name: t.button }).click()
+  await page.getByRole('button', { name: t.loadButton }).click()
+  await expect(page.getByText(t.keyMissing)).toBeVisible()
+})

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

@@ -172,3 +172,27 @@ test('Tier bearbeiten — isDeaf Tristate round-trip (FORM-FIELDS-1)', async ({
   await page.goto('/rennmaeuse/kruemel/bearbeiten')
   await expect(page.getByLabel(t.fields.isDeaf)).toHaveValue('true')
 })
+
+test('Detailseite: Würfe als Elternteil zeigt verlinkten Wurf (ANIMAL-LITTERS)', async ({ page }) => {
+  skipUnlessMock()
+  // Fridolin ist fatherId von 'w-kruemel' (Wurf K)
+  await page.goto('/rennmaeuse/fridolin')
+  await expect(page.getByRole('heading', { name: 'Fridolin' })).toBeVisible()
+  await expect(page.getByText(t.detail.parentLittersTitle)).toBeVisible()
+  // Wurf K als Link sichtbar
+  const litterLink = page.getByRole('link', { name: /Wurf K/ })
+  await expect(litterLink).toBeVisible()
+  // Vater-Badge sichtbar
+  await expect(page.getByText(t.detail.parentLittersRoleVater)).toBeVisible()
+  // Navigation zum Wurf funktioniert
+  await litterLink.first().click()
+  await expect(page.getByRole('heading', { name: 'Wurf K' })).toBeVisible()
+})
+
+test('Detailseite: Keine Würfe als Elternteil zeigt Leer-Zustand (ANIMAL-LITTERS)', async ({ page }) => {
+  skipUnlessMock()
+  // Krümel hat keine Würfe als Elternteil (nur als Kind von w-kruemel)
+  await page.goto('/rennmaeuse/kruemel')
+  await expect(page.getByText(t.detail.parentLittersTitle)).toBeVisible()
+  await expect(page.getByText(t.detail.parentLittersEmpty)).toBeVisible()
+})

gerbil-manager-web/gen-seed.mts

@@ -0,0 +1,49 @@
+/**
+ * Katalog-Generator — AR-5
+ *
+ * Erzeugt zwei Artefakte aus catalog.ts (Single Source of Truth):
+ *
+ *   colorVarietySeed.generated.json  — Display-Notation (Klammer: e[f]/c[chm]/c[h])
+ *                                       → Quelle für UI-Dropdowns, Frontend-Suche.
+ *
+ *   colorVarietySeed.backend.json    — Frozen internal symbols (ef/cchm/ch)
+ *                                       → Quelle für künftige EF-Seed-Migrationen (Pam).
+ *                                       NICHT in Bracket-Notation ändern — Backend-Parser
+ *                                       erwartet frozen symbols (CR-11-Matcher-Guardrail).
+ *
+ * Ausführen nach jeder Änderung an catalog.ts:
+ *   npm run gen:catalog
+ *
+ * Der vitest-Drift-Guard (catalog-drift.test.ts) schlägt fehl, wenn
+ * generated.json veraltet ist — Fehler macht den fehlenden Generator-Lauf sichtbar.
+ */
+import { BASE_COLORS, CATALOG, representativeGenotype } from './src/genetics/catalog.ts'
+import { LOCUS_ORDER } from './src/genetics/loci.ts'
+import type { Genotype } from './src/genetics/genotype.ts'
+import { writeFileSync } from 'fs'
+
+/** Internal (frozen) display string — concatenates canonical allele symbols without bracket mapping. */
+function toInternalString(g: Genotype): string {
+  return LOCUS_ORDER.filter(
+    (locus) => locus !== 'Sls' || !(g.Sls[0] === 'sl' && g.Sls[1] === 'sl'),
+  )
+    .map((locus) => (g[locus][0] + g[locus][1]).replace(/\?/g, '-'))
+    .join(' ')
+}
+
+// ── Display artefact (bracket notation) ─────────────────────────────────────
+const displayPath = './src/genetics/colorVarietySeed.generated.json'
+writeFileSync(displayPath, JSON.stringify(CATALOG, null, 2) + '\n')
+console.log(`[gen:catalog] display  → ${displayPath} (${CATALOG.length} rows)`)
+
+// ── Backend artefact (frozen internal symbols) ───────────────────────────────
+const backendSeed = BASE_COLORS.map((entry, i) => ({
+  name: entry.name,
+  ...(entry.english !== undefined ? { english: entry.english } : {}),
+  canonicalGenotype: toInternalString(representativeGenotype(entry)),
+  sortOrder: i,
+  ...(entry.image !== undefined ? { image: entry.image } : {}),
+}))
+const backendPath = './src/genetics/colorVarietySeed.backend.json'
+writeFileSync(backendPath, JSON.stringify(backendSeed, null, 2) + '\n')
+console.log(`[gen:catalog] backend  → ${backendPath} (${backendSeed.length} rows)`)

gerbil-manager-web/package.json

@@ -10,7 +10,8 @@
     "preview": "vite preview",
     "test": "vitest run",
     "test:watch": "vitest",
-    "e2e": "playwright test"
+    "e2e": "playwright test",
+    "gen:catalog": "npx tsx gen-seed.mts"
   },
   "dependencies": {
     "jszip": "^3.10.1",

gerbil-manager-web/src/api/__tests__/names.test.ts

@@ -0,0 +1,73 @@
+/** FEAT-NAMEGEN: Tests für buildSuggestPath + NAMEGEN_USAGES. */
+import { describe, expect, it } from 'vitest'
+import { buildSuggestPath, NAMEGEN_USAGES } from '../names'
+
+describe('buildSuggestPath', () => {
+  it('includes uppercased letter', () => {
+    const path = buildSuggestPath({ letter: 'f', gender: 'female', usages: ['norn'] })
+    expect(path).toContain('letter=F')
+  })
+
+  it('omits letter when blank', () => {
+    const path = buildSuggestPath({ letter: '', usages: ['norn'] })
+    expect(path).not.toContain('letter=')
+  })
+
+  it('omits letter when only whitespace', () => {
+    const path = buildSuggestPath({ letter: '  ', usages: ['norn'] })
+    expect(path).not.toContain('letter=')
+  })
+
+  it('includes gender', () => {
+    const path = buildSuggestPath({ gender: 'male', usages: ['norn'] })
+    expect(path).toContain('gender=male')
+  })
+
+  it('omits gender for empty string', () => {
+    const path = buildSuggestPath({ gender: '', usages: ['norn'] })
+    expect(path).not.toContain('gender=')
+  })
+
+  it('joins multiple usages without encoding commas', () => {
+    const path = buildSuggestPath({ usages: ['norn', 'mythg'] })
+    expect(path).toContain('usages=norn,mythg')
+  })
+
+  it('omits usages when array is empty', () => {
+    const path = buildSuggestPath({ usages: [] })
+    expect(path).not.toContain('usages=')
+  })
+
+  it('defaults count to 6', () => {
+    const path = buildSuggestPath({ usages: ['norn'] })
+    expect(path).toContain('count=6')
+  })
+
+  it('uses provided count', () => {
+    const path = buildSuggestPath({ usages: ['norn'], count: 8 })
+    expect(path).toContain('count=8')
+  })
+
+  it('starts with /names/suggest', () => {
+    const path = buildSuggestPath({ usages: ['norn'] })
+    expect(path).toMatch(/^\/names\/suggest\?/)
+  })
+})
+
+describe('NAMEGEN_USAGES', () => {
+  it('contains all 5 expected culture codes', () => {
+    const codes = NAMEGEN_USAGES.map((u) => u.code)
+    expect(codes).toContain('norn')
+    expect(codes).toContain('japa')
+    expect(codes).toContain('mythg')
+    expect(codes).toContain('ger')
+    expect(codes).toContain('arb')
+    expect(codes).toHaveLength(5)
+  })
+
+  it('every usage has a non-empty label', () => {
+    for (const u of NAMEGEN_USAGES) {
+      expect(u.label.length).toBeGreaterThan(0)
+    }
+  })
+})

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

@@ -0,0 +1,40 @@
+/** FEAT-NAMEGEN: Namensvorschläge — Schnittstelle zum Backend /names/suggest. */
+import { api } from './client'
+
+export interface NameSuggestion {
+  name: string
+  meaning: string
+  origin: string
+}
+
+export const NAMEGEN_USAGES = [
+  { code: 'norn', label: 'Nordisch' },
+  { code: 'japa', label: 'Japanisch' },
+  { code: 'mythg', label: 'Griech. Mythologie' },
+  { code: 'ger', label: 'Deutsch' },
+  { code: 'arb', label: 'Arabisch' },
+] as const
+
+export type NamegenUsageCode = (typeof NAMEGEN_USAGES)[number]['code']
+
+export interface SuggestNamesParams {
+  letter?: string
+  gender?: string
+  usages: NamegenUsageCode[]
+  count?: number
+}
+
+/** Exported for unit tests — builds the query path without a network call. */
+export function buildSuggestPath(params: SuggestNamesParams): string {
+  const parts: string[] = []
+  const letter = params.letter?.trim().toUpperCase()
+  if (letter) parts.push(`letter=${encodeURIComponent(letter)}`)
+  if (params.gender && params.gender !== '') parts.push(`gender=${encodeURIComponent(params.gender)}`)
+  if (params.usages.length > 0) parts.push(`usages=${params.usages.join(',')}`)
+  parts.push(`count=${params.count ?? 6}`)
+  return `/names/suggest?${parts.join('&')}`
+}
+
+export function suggestNames(params: SuggestNamesParams): Promise<NameSuggestion[]> {
+  return api.get<NameSuggestion[]>(buildSuggestPath(params))
+}

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

@@ -43,16 +43,29 @@ export default function BreedingResultView({ result, title }: BreedingResultView
       ) : (
         <>
           <ul className="farbschlag-cards">
-            {result.byFarbschlag.map((f) => (
-              <li key={f.farbschlag} className="farbschlag-card">
-                <FarbschlagImage name={f.farbschlag} />
-                <span className="farbschlag-card__name">{f.farbschlag}</span>
-                <span className="farbschlag-card__prob">
-                  {f.probability.percent}
-                  <small> ({f.probability.text})</small>
-                </span>
-              </li>
-            ))}
+            {result.byFarbschlag.map((f) => {
+              // Representative genotype: highest-prob offspring for this farbschlag.
+              const repGenotype = result.offspring.find(
+                (o) => o.farbschlag === f.farbschlag,
+              )?.genotype
+              return (
+                <li key={f.farbschlag} className="farbschlag-card">
+                  <div className="farbschlag-card__img">
+                    <FarbschlagImage name={f.farbschlag} />
+                  </div>
+                  <div className="farbschlag-card__body">
+                    <span className="farbschlag-card__name">{f.farbschlag}</span>
+                    {repGenotype && (
+                      <code className="farbschlag-card__geno">{repGenotype}</code>
+                    )}
+                  </div>
+                  <span className="farbschlag-card__prob">
+                    {f.probability.percent}
+                    <small> ({f.probability.text})</small>
+                  </span>
+                </li>
+              )
+            })}
           </ul>
 
           <button

gerbil-manager-web/src/components/NameSuggestPanel.css

@@ -0,0 +1,114 @@
+.namegen-name-row {
+  display: flex;
+  gap: 0.5rem;
+  align-items: center;
+}
+
+.namegen-name-row .input {
+  flex: 1;
+  min-width: 0;
+}
+
+.namegen-panel {
+  border: 1px solid var(--color-border);
+  border-radius: 0.5rem;
+  padding: 1rem;
+  margin-bottom: 1rem;
+  background: var(--color-bg, #fff);
+}
+
+.namegen-panel__header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 0.75rem;
+  font-weight: 600;
+}
+
+.namegen-panel__filters {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 1rem;
+  align-items: flex-start;
+  margin-bottom: 0.75rem;
+}
+
+.namegen-panel__letter {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+}
+
+.namegen-panel__letter-input {
+  width: 5rem;
+}
+
+.namegen-panel__usages {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+}
+
+.namegen-usages-grid {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.4rem 1rem;
+}
+
+.namegen-usages-grid label {
+  display: flex;
+  align-items: center;
+  gap: 0.3rem;
+  font-size: 0.9rem;
+  cursor: pointer;
+}
+
+.namegen-suggestions {
+  list-style: none;
+  margin: 0.75rem 0 0;
+  padding: 0;
+  border-top: 1px solid var(--color-border);
+}
+
+.namegen-suggestion {
+  display: flex;
+  align-items: baseline;
+  gap: 0.5rem;
+  padding: 0.5rem 0;
+  border-bottom: 1px solid var(--color-border);
+  flex-wrap: wrap;
+}
+
+.namegen-suggestion:last-child {
+  border-bottom: none;
+}
+
+.namegen-suggestion__pick {
+  font-weight: 600;
+  color: var(--color-accent, #2563eb);
+  background: none;
+  border: none;
+  padding: 0;
+  cursor: pointer;
+  text-align: left;
+  font-size: inherit;
+  font-family: inherit;
+  min-width: 6rem;
+}
+
+.namegen-suggestion__pick:hover {
+  text-decoration: underline;
+}
+
+.namegen-suggestion__meaning {
+  flex: 1;
+  font-size: 0.88rem;
+  color: var(--color-text-muted);
+  min-width: 8rem;
+}
+
+.namegen-suggestion__origin {
+  font-size: 0.85rem;
+  color: var(--color-text-muted);
+  white-space: nowrap;
+}

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

@@ -0,0 +1,132 @@
+import { useState } from 'react'
+import { de } from '../strings/de'
+import { ApiError, errorCode } from '../api/client'
+import { NAMEGEN_USAGES, suggestNames, type NamegenUsageCode, type NameSuggestion } from '../api/names'
+import './NameSuggestPanel.css'
+
+interface NameSuggestPanelProps {
+  gender: string
+  onPick: (name: string) => void
+  onClose: () => void
+}
+
+const ALL_CODES = NAMEGEN_USAGES.map((u) => u.code) as NamegenUsageCode[]
+
+export default function NameSuggestPanel({ gender, onPick, onClose }: NameSuggestPanelProps) {
+  const t = de.namegen
+  const [letter, setLetter] = useState('')
+  const [usages, setUsages] = useState<Set<NamegenUsageCode>>(new Set(ALL_CODES))
+  const [loading, setLoading] = useState(false)
+  const [keyMissing, setKeyMissing] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+  const [suggestions, setSuggestions] = useState<NameSuggestion[]>([])
+  const [fetched, setFetched] = useState(false)
+
+  function toggleUsage(code: NamegenUsageCode) {
+    setUsages((prev) => {
+      const next = new Set(prev)
+      if (next.has(code)) next.delete(code)
+      else next.add(code)
+      return next
+    })
+  }
+
+  async function load() {
+    setLoading(true)
+    setError(null)
+    setKeyMissing(false)
+    setSuggestions([])
+    try {
+      const result = await suggestNames({
+        letter: letter.trim() || undefined,
+        gender: gender || undefined,
+        usages: [...usages] as NamegenUsageCode[],
+        count: 6,
+      })
+      setSuggestions(result)
+      setFetched(true)
+    } catch (err) {
+      if (errorCode(err) === 'NamesKeyMissing') {
+        setKeyMissing(true)
+      } else {
+        setError(err instanceof ApiError ? err.message : de.api.errors.unknown)
+      }
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div className="namegen-panel" role="region" aria-label={t.panelTitle}>
+      <div className="namegen-panel__header">
+        <span>{t.panelTitle}</span>
+        <button type="button" className="btn" onClick={onClose} aria-label={t.close}>
+          ✕
+        </button>
+      </div>
+
+      <div className="namegen-panel__filters">
+        <div className="namegen-panel__letter">
+          <label htmlFor="namegen-letter">{t.letterLabel}</label>
+          <input
+            id="namegen-letter"
+            className="input namegen-panel__letter-input"
+            value={letter}
+            onChange={(e) => setLetter(e.target.value)}
+            placeholder={t.letterPlaceholder}
+            maxLength={1}
+          />
+        </div>
+
+        <div className="namegen-panel__usages">
+          <span>{t.usagesLabel}</span>
+          <div className="namegen-usages-grid">
+            {NAMEGEN_USAGES.map(({ code, label }) => (
+              <label key={code}>
+                <input
+                  type="checkbox"
+                  checked={usages.has(code)}
+                  onChange={() => toggleUsage(code)}
+                />
+                {label}
+              </label>
+            ))}
+          </div>
+        </div>
+      </div>
+
+      <button
+        type="button"
+        className="btn btn--primary"
+        onClick={load}
+        disabled={loading || usages.size === 0}
+      >
+        {loading ? t.loading : t.loadButton}
+      </button>
+
+      {keyMissing && <p className="muted">{t.keyMissing}</p>}
+      {error && <p className="error-text">{error}</p>}
+      {fetched && !loading && !keyMissing && !error && suggestions.length === 0 && (
+        <p className="muted">{t.empty}</p>
+      )}
+
+      {suggestions.length > 0 && (
+        <ul className="namegen-suggestions" aria-label={t.panelTitle}>
+          {suggestions.map((s, i) => (
+            <li key={`${s.name}-${i}`} className="namegen-suggestion">
+              <button
+                type="button"
+                className="namegen-suggestion__pick"
+                onClick={() => onPick(s.name)}
+              >
+                {s.name}
+              </button>
+              <span className="namegen-suggestion__meaning">{s.meaning}</span>
+              <span className="namegen-suggestion__origin">{s.origin}</span>
+            </li>
+          ))}
+        </ul>
+      )}
+    </div>
+  )
+}

gerbil-manager-web/src/genetics/__tests__/catalog-drift.test.ts

@@ -0,0 +1,24 @@
+/**
+ * AR-5 Drift-Guard: colorVarietySeed.generated.json muss mit dem Live-Output
+ * aus catalog.ts übereinstimmen.
+ *
+ * Schlägt dieser Test fehl, wurde catalog.ts verändert ohne danach
+ * `npm run gen:catalog` auszuführen. Fix: `npm run gen:catalog` laufen lassen
+ * und die geänderten JSON-Dateien committen.
+ */
+import { readFileSync } from 'fs'
+import { fileURLToPath } from 'url'
+import { dirname, join } from 'path'
+import { describe, it, expect } from 'vitest'
+import { CATALOG } from '../catalog'
+
+const __dir = dirname(fileURLToPath(import.meta.url))
+
+describe('AR-5 Catalog drift-guard', () => {
+  it('colorVarietySeed.generated.json stimmt mit catalog.ts überein (sonst: npm run gen:catalog)', () => {
+    const jsonPath = join(__dir, '..', 'colorVarietySeed.generated.json')
+    const committed = JSON.parse(readFileSync(jsonPath, 'utf-8'))
+    // CATALOG is readonly — deep equality against the plain parsed array is sufficient.
+    expect(committed).toEqual(Array.from(CATALOG))
+  })
+})

gerbil-manager-web/src/genetics/__tests__/genetics.test.ts

@@ -179,17 +179,21 @@ describe('Farbschlag catalog', () => {
     expect(match.name).toBe('Unbekannter Farbschlag')
   })
 
-  it('has the expected catalogue coverage (GEN-3g: 66 after adding CP-*-Hell het variants)', () => {
-    // GEN-3f: 73 -> 61 (cchm CP reconciliation).
-    // GEN-3g: +5 het variants (CP-Agouti/Silberagouti/Algierfuchs/Polarfuchs/Orangeschimmel -Hell),
-    // giving 61 + 5 = 66. CP-Fuchs-Hell was already counted.
-    expect(CATALOG_SIZE).toBe(66)
+  it('has the expected catalogue coverage (GEN-4: 70 after adding 4 dilute-fox entries)', () => {
+    // GEN-3f: 73 -> 61. GEN-3g: +5 -> 66. GEN-4: +4 (Dilute Algierfuchs/Goldfuchs/Rotfuchs/Polarfuchs) -> 70.
+    expect(CATALOG_SIZE).toBe(70)
   })
 
   it('frozen contract names round-trip to themselves (DB-key guard)', () => {
     // The first 18 are the frozen ColorVariety keys — their representative
     // genotype MUST resolve back to their own name, never a later variety.
+    // GEN-4 exception: 'Pink Eyed White (PEW)' (ch/ch+pp) now computes 'REW'
+    // because the REW engine check (both C-alleles reduced + pp) fires first.
+    // PEW stays in the catalog as a user-pickable import name; its computed
+    // farbschlag is intentionally 'REW' per Julian's extended rule.
+    const REW_SHADOWED = new Set(['Pink Eyed White (PEW)'])
     for (const entry of BASE_COLORS.slice(0, FROZEN_COUNT)) {
+      if (REW_SHADOWED.has(entry.name)) continue
       expect(genotypeToFarbschlag(representativeGenotype(entry))).toBe(entry.name)
     }
   })
@@ -373,9 +377,11 @@ describe("GEN-3c: unknown allele displays as '-' (stored as '?')", () => {
 })
 
 describe('GEN-3c: no Unbekannt when the E locus is known (family fallback)', () => {
-  it('eef with unknown other loci -> Fuchsschimmel (the reported bug case)', () => {
+  it('eef with unknown other loci -> specific Schimmel variety (GEN-4: Fuchsschimmel is a category)', () => {
+    // GEN-4: locusToken ef/e -> 'ef' enables catalog match; family fallback 'Fuchsschimmel' blocked.
+    // aa + ef/e + C/D/G/P resolved via GEN-3d -> Kohlfuchsschimmel (A:a, C:C, D:D, E:ef, G:G, P:P).
     expect(genotypeToFarbschlag(fromDisplayString('aa C- D- eef Gg Pp spsp --'))).toBe(
-      'Fuchsschimmel',
+      'Kohlfuchsschimmel',
     )
   })
   it('ee -> Fuchs family, efef -> a Schimmel (never Unbekannt) even with unknowns', () => {
@@ -401,9 +407,11 @@ describe('GEN-3d: dominance tiebreak for unknown loci', () => {
     expect(genotypeToFarbschlag(fromDisplayString('AA CC DD EE GG PP sp- rere'))).toBe('Agouti')
   })
 
-  it('still: eef with unknowns -> Fuchsschimmel (family pin unaffected by tiebreak)', () => {
+  it('still: eef with unknowns -> specific variety, not category (GEN-4 update)', () => {
+    // GEN-4: 'Fuchsschimmel' is a Farbart/category; the engine now resolves to the
+    // specific catalog entry (Kohlfuchsschimmel) via the locusToken ef/e -> 'ef' fix.
     expect(genotypeToFarbschlag(fromDisplayString('aa C- D- eef Gg Pp spsp --'))).toBe(
-      'Fuchsschimmel',
+      'Kohlfuchsschimmel',
     )
   })
 })
@@ -421,7 +429,8 @@ describe('GEN-3e: C-locus colourpoint naming', () => {
     expect(name('AA cchmch DD EE gg PP spsp rere')).toBe('CP-Silberagouti-Hell')
     expect(name('AA cchmch DD ee GG PP spsp rere')).toBe('CP-Algierfuchs-Hell')
     expect(name('AA cchmch DD ee gg PP spsp rere')).toBe('CP-Polarfuchs-Hell')
-    expect(name('AA cchmch dd ee GG PP spsp rere')).toBe('CP-Fuchs-Hell')
+    // GEN-4: dd base = 'Dilute Algierfuchs' → 'Dilute CP-Algierfuchs-Hell'
+    expect(name('AA cchmch dd ee GG PP spsp rere')).toBe('Dilute CP-Algierfuchs-Hell')
   })
 
   it('aa fixed colourpoint names (Marder/Siam/Zobel/Zobel-Hell)', () => {
@@ -471,8 +480,8 @@ describe('GEN-3f: CP catalog reconciled to the breeder CP- naming (matches her l
     expect(name('AA cchmcchm DD EE gg PP spsp rere')).toBe('CP-Silberagouti')
     expect(name('AA cchmcchm DD ee GG PP spsp rere')).toBe('CP-Algierfuchs')
     expect(name('AA cchmcchm DD ee gg PP spsp rere')).toBe('CP-Polarfuchs')
-    // dd agouti fox has no dedicated base -> the eFamily fallback yields 'CP-Fuchs'.
-    expect(name('AA cchmcchm dd ee GG PP spsp rere')).toBe('CP-Fuchs')
+    // GEN-4: dd+ee base = 'Dilute Algierfuchs' -> 'Dilute CP-Algierfuchs' (no more CP-Fuchs catch-all).
+    expect(name('AA cchmcchm dd ee GG PP spsp rere')).toBe('Dilute CP-Algierfuchs')
     // A- cchm efef -> CP-Orangeschimmel (Schimmel base under full C).
     expect(name('AA cchmcchm DD efef GG PP spsp rere')).toBe('CP-Orangeschimmel')
   })
@@ -481,11 +490,12 @@ describe('GEN-3f: CP catalog reconciled to the breeder CP- naming (matches her l
     const siam = BASE_COLORS.find((e) => e.name === 'Siam')!
     const zh = BASE_COLORS.find((e) => e.name === 'Zobel-Hell')!
     const cpah = BASE_COLORS.find((e) => e.name === 'CP-Agouti-Hell')!
+    // GEN-4: CP-Fuchs-Hell kept for import/hand-pick but engine now returns the specific name.
     const cpfh = BASE_COLORS.find((e) => e.name === 'CP-Fuchs-Hell')!
     expect(genotypeToFarbschlag(representativeGenotype(siam))).toBe('Siam')
     expect(genotypeToFarbschlag(representativeGenotype(zh))).toBe('Zobel-Hell')
     expect(genotypeToFarbschlag(representativeGenotype(cpah))).toBe('CP-Agouti-Hell')
-    expect(genotypeToFarbschlag(representativeGenotype(cpfh))).toBe('CP-Fuchs-Hell')
+    expect(genotypeToFarbschlag(representativeGenotype(cpfh))).toBe('Dilute CP-Algierfuchs-Hell')
   })
 })
 
@@ -507,7 +517,8 @@ describe('GEN-3g: "-Hell" in variety name == cchm/ch het; hom == cchm/cchm', ()
     expect(name('AA cchmch DD EE gg PP spsp rere')).toBe('CP-Silberagouti-Hell')
     expect(name('AA cchmch DD ee GG PP spsp rere')).toBe('CP-Algierfuchs-Hell')
     expect(name('AA cchmch DD ee gg PP spsp rere')).toBe('CP-Polarfuchs-Hell')
-    expect(name('AA cchmch dd ee GG PP spsp rere')).toBe('CP-Fuchs-Hell')
+    // GEN-4: dd+ee base = 'Dilute Algierfuchs' → prefix ordering: 'Dilute CP-Algierfuchs-Hell'
+    expect(name('AA cchmch dd ee GG PP spsp rere')).toBe('Dilute CP-Algierfuchs-Hell')
     expect(name('AA cchmch DD efef GG PP spsp rere')).toBe('CP-Orangeschimmel-Hell')
   })
 
@@ -525,6 +536,58 @@ describe('GEN-3g: "-Hell" in variety name == cchm/ch het; hom == cchm/cchm', ()
   })
 })
 
+describe('GEN-4: Dilute prefix, REW, no-bare-Fuchs', () => {
+  const name = (s: string) => genotypeToFarbschlag(fromDisplayString(s))
+
+  it('dd entries use Dilute prefix — no more X-dd names', () => {
+    expect(name('AA CC dd EE GG PP spsp rere')).toBe('Dilute Agouti')
+    expect(name('aa CC dd EE gg PP spsp rere')).toBe('Dilute Anthrazit')
+    expect(name('aa CC dd ee GG PP spsp rere')).toBe('Dilute Kohlfuchs')
+    expect(name('aa CC dd ee gg pp spsp rere')).toBe('Dilute Blaufuchs')
+    expect(name('AA CC dd EE GG pp spsp rere')).toBe('Dilute Gold')
+    expect(name('aa CC dd EE GG pp spsp rere')).toBe('Dilute Platin')
+  })
+
+  it('REW: both C alleles reduced (no full C) + pp = REW — all three cases (Julian confirmed)', () => {
+    // hom cchm/cchm + pp
+    expect(name('AA cchmcchm DD EE GG pp spsp rere')).toBe('REW')  // CP-Gold
+    expect(name('AA cchmcchm DD ee GG pp spsp rere')).toBe('REW')  // CP-Goldfuchs
+    expect(name('AA cchmcchm DD EE gg pp spsp rere')).toBe('REW')  // CP-Elfenbein
+    expect(name('AA cchmcchm DD ee gg pp spsp rere')).toBe('REW')  // CP-Apricot
+    expect(name('AA cchmcchm dd EE GG pp spsp rere')).toBe('REW')  // CP-dd Gold
+    // het cchm/ch + pp (Julian: also REW)
+    expect(name('AA cchmch DD EE GG pp spsp rere')).toBe('REW')
+    // ch/ch + pp (Julian: also REW — subsumes PEW)
+    expect(name('AA chch DD EE GG pp spsp rere')).toBe('REW')
+    expect(name('aa chch DD EE GG pp spsp rere')).toBe('REW')
+    // Counterproof: full C present → NOT REW (residual pigment)
+    expect(name('AA Ccchm DD EE GG pp spsp rere')).not.toBe('REW') // Cc[chm] + pp = Gold-like
+    expect(name('AA Cch DD EE GG pp spsp rere')).not.toBe('REW')   // Cc[h] + pp
+  })
+
+  it('Farbarten (categories) never appear as computed results', () => {
+    // 'Fuchs', 'Fuchsschimmel', 'Schimmel' etc. are Farbarten — blocked by category guard.
+    // het ef/e now resolves to specific variety via locusToken ef/e -> 'ef' fix.
+    expect(genotypeToFarbschlag(fromDisplayString('aa CC DD eef GG PP spsp rere'))).toBe('Kohlfuchsschimmel')
+    // Agouti ef/e: 'Orangeschimmel' wins (same token-set as Algierfuchsschimmel, listed first)
+    expect(genotypeToFarbschlag(fromDisplayString('AA CC DD eef GG PP spsp rere'))).toBe('Orangeschimmel')
+    // Unusual combo not in catalog -> Unbekannt (not 'Fuchsschimmel')
+    expect(farbschlagFor(fromDisplayString('aa CC dd eef GG PP spsp rere')).unknown).toBe(true)
+    // FK check: none of the 7 category names are in BASE_COLORS (no DB entries -> no FK risk)
+    const CATS = ['Standard', 'Colourpoint', 'Dilute', 'Fuchs', 'Fuchsschimmel', 'Schimmel', 'Colourpoint Dilute']
+    for (const cat of CATS) {
+      expect(BASE_COLORS.some(e => e.name === cat)).toBe(false)
+    }
+  })
+
+  it('bare Fuchs never appears — dilute-fox combinations are named specifically', () => {
+    expect(name('AA CC dd ee GG PP spsp rere')).toBe('Dilute Algierfuchs')
+    expect(name('AA CC dd ee GG pp spsp rere')).toBe('Dilute Goldfuchs')
+    expect(name('aa CC dd ee GG pp spsp rere')).toBe('Dilute Rotfuchs')
+    expect(name('AA CC dd ee gg PP spsp rere')).toBe('Dilute Polarfuchs')
+  })
+})
+
 describe('GEN-3h: breeder bracket-notation display + E-locus e-before-ef order', () => {
   // ── Display symbols ────────────────────────────────────────────────────
   it('ef displays as e[f], cchm as c[chm], ch as c[h]', () => {

gerbil-manager-web/src/genetics/catalog.ts

@@ -66,8 +66,8 @@ export const BASE_COLORS: readonly FarbschlagEntry[] = [
   { name: 'Platin', english: 'Lilac', tokens: { A: 'a', C: 'C', D: 'D', E: 'E', G: 'G', P: 'p' }, image: 'platin.JPG' },
   { name: 'Goldfuchs', english: 'Yellow Fox', tokens: { A: 'A', C: 'C', D: 'D', E: 'e', G: 'G', P: 'p' }, image: 'goldfuchs.jpg' },
   { name: 'Rotfuchs', english: 'Argente Nutmeg', tokens: { A: 'a', C: 'C', D: 'D', E: 'e', G: 'G', P: 'p' }, image: 'rotfuchs.JPG' },
-  { name: 'dd Gold', english: 'dd Argente Golden', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'gold-dd.jpg' },
-  { name: 'dd Platin', english: 'dd Lilac', tokens: { A: 'a', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'platin-dd.jpg' },
+  { name: 'Dilute Gold', english: 'dd Argente Golden', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'gold-dd.jpg' },
+  { name: 'Dilute Platin', english: 'dd Lilac', tokens: { A: 'a', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'platin-dd.jpg' },
 
   // ── baseportal.de varieties (GEN-2), normalized to the frozen allele table ──
   { name: 'Altweiss (REW)', tokens: { A: 'a', C: 'C', D: 'D', E: 'E', G: 'g', P: 'p' }, image: 'altweiss-rew.jpeg' },
@@ -78,16 +78,24 @@ export const BASE_COLORS: readonly FarbschlagEntry[] = [
   { name: 'Kohlfuchs', tokens: { A: 'a', C: 'C', D: 'D', E: 'e', G: 'G', P: 'P' }, image: 'kohlfuchs.jpg' },
   { name: 'Polarfuchs', tokens: { A: 'A', C: 'C', D: 'D', E: 'e', G: 'g', P: 'P' }, image: 'polarfuchs.jpg' },
   { name: 'Saphir', tokens: { A: 'a', C: 'C', D: 'D', E: 'E', G: 'G', P: 'p' }, image: 'saphir.jpg' },
-  // GEN-3a: efef base (otherwise wild C/D/G/P) = Orangeschimmel (breeder C5).
-  { name: 'Orangeschimmel', tokens: { C: 'C', D: 'D', E: 'ef', G: 'G', P: 'P' }, image: 'schimmel-orangeschimmel.jpg' },
+  // GEN-3a: efef base (agouti, wild C/D/G/P) = Orangeschimmel (breeder C5).
+  // GEN-4: A:'A' added — non-agouti ef animals fall through to Kohlfuchsschimmel etc.
+  { name: 'Orangeschimmel', tokens: { A: 'A', C: 'C', D: 'D', E: 'ef', G: 'G', P: 'P' }, image: 'schimmel-orangeschimmel.jpg' },
   { name: 'Topas', tokens: { A: 'A', C: 'C', D: 'D', E: 'E', G: 'G', P: 'p' }, image: 'topas.jpg' },
   { name: 'Platin-Hell', tokens: { A: 'a', C: 'C', D: 'D', E: 'E', G: 'G', P: 'p' }, image: 'platin-hell.jpg' },
-  { name: 'Agouti dd', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'P' }, image: 'agouti-dd.jpg' },
-  { name: 'Silberagouti dd', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'g', P: 'P' }, image: 'silberagouti-dd.jpg' },
-  { name: 'Kohlfuchs dd', tokens: { A: 'a', C: 'C', D: 'd', E: 'e', G: 'G', P: 'P' }, image: 'kohlfuchs-dd.jpg' },
-  { name: 'Anthrazit dd', tokens: { A: 'a', C: 'C', D: 'd', E: 'E', G: 'g', P: 'P' }, image: 'anthrazit-dd.jpg' },
+  { name: 'Dilute Agouti', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'P' }, image: 'agouti-dd.jpg' },
+  { name: 'Dilute Silberagouti', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'g', P: 'P' }, image: 'silberagouti-dd.jpg' },
+  { name: 'Dilute Kohlfuchs', tokens: { A: 'a', C: 'C', D: 'd', E: 'e', G: 'G', P: 'P' }, image: 'kohlfuchs-dd.jpg' },
+  { name: 'Dilute Anthrazit', tokens: { A: 'a', C: 'C', D: 'd', E: 'E', G: 'g', P: 'P' }, image: 'anthrazit-dd.jpg' },
+  // GEN-4: dilute fox base entries — prevent bare 'Fuchs' family fallback for
+  // agouti+dilute+fox combinations not otherwise covered in the catalog.
+  { name: 'Dilute Algierfuchs', tokens: { A: 'A', C: 'C', D: 'd', E: 'e', G: 'G', P: 'P' } },
+  { name: 'Dilute Goldfuchs', tokens: { A: 'A', C: 'C', D: 'd', E: 'e', G: 'G', P: 'p' } },
+  { name: 'Dilute Rotfuchs', tokens: { A: 'a', C: 'C', D: 'd', E: 'e', G: 'G', P: 'p' } },
+  { name: 'Dilute Polarfuchs', tokens: { A: 'A', C: 'C', D: 'd', E: 'e', G: 'g', P: 'P' } },
   // GEN-3a: efef gg base = Silberschimmel (breeder C5) — listed before the
   // A-specific Polarfuchsschimmel so the canonical efef-gg reverse-matches here.
+  // No A restriction: both agouti (AA) and non-agouti (aa) ef/gg = Silberschimmel.
   { name: 'Silberschimmel', tokens: { C: 'C', D: 'D', E: 'ef', G: 'g', P: 'P' }, image: 'silberschimmel.jpg' },
   { name: 'Polarfuchsschimmel', tokens: { A: 'A', C: 'C', D: 'D', E: 'ef', G: 'g', P: 'P' }, image: 'polarfuchsschimmel.jpg' },
   { name: 'Algierfuchsschimmel', tokens: { A: 'A', C: 'C', D: 'D', E: 'ef', G: 'G', P: 'P' }, image: 'algierfuchsschimmel.jpg' },
@@ -104,8 +112,8 @@ export const BASE_COLORS: readonly FarbschlagEntry[] = [
   { name: 'Rotfuchs, hell', tokens: { A: 'a', C: 'C', D: 'D', E: 'e', G: 'G', P: 'p' }, image: 'rotfuchs-hell.jpg' },
   { name: 'Kohlfuchs-Hell', tokens: { A: 'a', C: 'C', D: 'D', E: 'e', G: 'G', P: 'P' }, image: 'kohlfuchs-hell-2.jpg' },
   { name: 'Algierfuchs, hell', tokens: { A: 'A', C: 'C', D: 'D', E: 'e', G: 'G', P: 'P' }, image: 'algierfuchs-hell.JPG' },
-  { name: 'Topas dd', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'topas-dd.jpg' },
-  { name: 'Blaufuchs dd', tokens: { A: 'a', C: 'C', D: 'd', E: 'e', G: 'g', P: 'p' }, image: 'blaufuchs-dd.jpg' },
+  { name: 'Dilute Topas', tokens: { A: 'A', C: 'C', D: 'd', E: 'E', G: 'G', P: 'p' }, image: 'topas-dd.jpg' },
+  { name: 'Dilute Blaufuchs', tokens: { A: 'a', C: 'C', D: 'd', E: 'e', G: 'g', P: 'p' }, image: 'blaufuchs-dd.jpg' },
 
   // ── GEN-3f/3g: c^chm colourpoint varieties ──
   // GEN-3f: aa points = marten/sable group (Marder/Siam, +gg Zobel/Zobel-Hell).
@@ -147,10 +155,12 @@ export interface FarbschlagMatch {
  * Expressed token at a locus. GEN-3d: an UNKNOWN allele ('?') is resolved to the
  * MOST-DOMINANT allele of the locus (the safer default) rather than acting as a
  * match-anything wildcard — so an unknown-C animal reads as full-colour 'C', not
- * a c^h/c^chm colourpoint white. The E locus stays PAIR-aware so the Fuchs/
- * Schimmel family is distinguishable: ee->'e', e/ef->'eef', ef/ef->'ef'.
- * (The Fuchs/Schimmel FAMILY for unknown-E is still handled by eFamily on the
- * raw pair, which runs before this.)
+ * a c^h/c^chm colourpoint white. The E locus uses the PHENOTYPICALLY EXPRESSED
+ * allele for catalog matching: ee->'e', ef/ef->'ef', e/ef->'ef' (ef is dominant
+ * for the Schimmel/roan phenotype, so het ef/e animals match Schimmel catalog
+ * entries such as Kohlfuchsschimmel).  GEN-4: 'eef' removed — 'Fuchsschimmel'
+ * is a Farbart/category, not a concrete Farbschlag; the catalog must name the
+ * variety specifically.
  */
 function locusToken(g: Genotype, locus: LocusKey): string {
   // Default an unknown allele to the WILD-TYPE reading: most-dominant for the
@@ -162,7 +172,9 @@ function locusToken(g: Genotype, locus: LocusKey): string {
   const [x, y] = g[locus].map((a) => (a === WILDCARD ? fallback : a))
   if (locus === 'E') {
     if (x === y) return x // ee->'e', efef->'ef', EE->'E'
-    if ((x === 'e' && y === 'ef') || (x === 'ef' && y === 'e')) return 'eef'
+    // GEN-4: het ef/e → 'ef' (ef is dominant for the Schimmel phenotype;
+    // enables catalog entries like Kohlfuchsschimmel to match het animals).
+    if ((x === 'e' && y === 'ef') || (x === 'ef' && y === 'e')) return 'ef'
     return dominantAllele('E', x, y) // E/ef, E/e -> 'E'
   }
   return dominantAllele(locus, x, y)
@@ -175,10 +187,12 @@ function matches(g: Genotype, entry: FarbschlagEntry): boolean {
 }
 
 /**
- * GEN-3c family fallback: the E locus alone names the Fuchs/Schimmel family even
- * when other loci are unknown (so genotypes never fall through to "Unbekannt").
- *   ee -> Fuchs | e/ef -> Fuchsschimmel | ef/ef -> Schimmel | e/? -> Fuchs (for now)
- * Returns null when E is dominant (full colour) or fully unknown.
+ * E-locus family: used to scope the catalog search to E-aware entries.
+ * Returns a family tag ('Fuchs'/'Fuchsschimmel'/'Schimmel') when the E locus
+ * implies a non-dominant extension pair, or null for full-extension/unknown.
+ * GEN-4: these family names are Farbarten (categories), NOT concrete Farbschläge.
+ * They are ONLY used here as catalog-search filters; they must NEVER appear as
+ * computed farbschlag output (the farbschlagFor category guard blocks them).
  */
 function eFamily(g: Genotype): string | null {
   const [x, y] = g.E
@@ -205,7 +219,10 @@ function baseColourFor(g: Genotype): string | null {
   const base = family
     ? (BASE_COLORS.find((e) => e.tokens.E !== undefined && matches(g, e)) ?? null)
     : (BASE_COLORS.find((e) => matches(g, e)) ?? null)
-  return base?.name ?? family
+  // GEN-4: never fall back to the family name — Fuchs/Fuchsschimmel/Schimmel are
+  // Farbarten (categories), not concrete Farbschläge.  If no catalog entry matches,
+  // return null so farbschlagFor emits 'Unbekannter Farbschlag'.
+  return base?.name ?? null
 }
 
 /**
@@ -233,7 +250,13 @@ function colourpointName(g: Genotype): string | null {
   }
   // A- colourpoint: base as if C were full; het (cchm/ch) -> '-Hell' suffix.
   const base = baseColourFor(makeGenotype({ ...g, C: ['C', 'C'] }))
-  return base ? `CP-${base}${bothCchm ? '' : '-Hell'}` : null
+  if (!base) return null
+  // GEN-4: if base is a Dilute variety, prefix ordering is 'Dilute CP-X' not 'CP-Dilute X'.
+  const DILUTE = 'Dilute '
+  if (base.startsWith(DILUTE)) {
+    return `${DILUTE}CP-${base.slice(DILUTE.length)}${bothCchm ? '' : '-Hell'}`
+  }
+  return `CP-${base}${bothCchm ? '' : '-Hell'}`
 }
 
 export function farbschlagFor(g: Genotype): FarbschlagMatch {
@@ -241,8 +264,30 @@ export function farbschlagFor(g: Genotype): FarbschlagMatch {
   if (locusToken(g, 'Sp') === 'Sp') modifiers.push('Schecke')
   if (locusToken(g, 'Re') === 'Re') modifiers.push('Rex')
 
+  // GEN-4 REW check (Julian confirmed + extended): both C alleles reduced (no full 'C')
+  // AND pink-eyed (pp) = REW (Rotaugenweiß), A/D/E/G-independent.
+  //   cchm/cchm + pp → REW  (CP varieties with pink-eye)
+  //   cchm/ch  + pp → REW  (het colourpoint + pink-eye)
+  //   ch/ch    + pp → REW  (this also subsumes the frozen 'Pink Eyed White (PEW)' entry)
+  // Counterproof: at least one full 'C' + pp → NOT REW (residual pigment remains).
+  const [c0, c1] = resolvedPair(g, 'C')
+  const [p0, p1] = resolvedPair(g, 'P')
+  const cReduced = (c: string) => c === 'cchm' || c === 'ch'
+  if (cReduced(c0) && cReduced(c1) && p0 === 'p' && p1 === 'p') {
+    const name = ['REW', ...modifiers].join(' ')
+    return { name, base: null, unknown: false }
+  }
+
   const baseName = colourpointName(g) ?? baseColourFor(g)
-  if (!baseName) {
+  // GEN-4: safety guard — Farbarten (categories/families) are NEVER valid as
+  // a computed Farbschlag output.  If baseName is a category label, treat as
+  // Unbekannt instead of leaking an invalid name into the UI.
+  const CATEGORY_NAMES: ReadonlySet<string> = new Set([
+    'Standard', 'Colourpoint', 'Dilute',
+    'Fuchs', 'Fuchsschimmel', 'Schimmel',
+    'Colourpoint Dilute',
+  ])
+  if (!baseName || CATEGORY_NAMES.has(baseName)) {
     return { name: UNKNOWN_FARBSCHLAG, base: null, unknown: true }
   }
   const name = [baseName, ...modifiers].join(' ')

gerbil-manager-web/src/genetics/colorVarietySeed.backend.json

@@ -0,0 +1,426 @@
+[
+  {
+    "name": "Pink Eyed White (PEW)",
+    "english": "Pink Eyed White",
+    "canonicalGenotype": "AA chch DD EE GG pp spsp rere",
+    "sortOrder": 0,
+    "image": "rotaugen-weiss-pew-d-sep-e-sep.jpg"
+  },
+  {
+    "name": "Hermelin",
+    "english": "Dark Tailed White",
+    "canonicalGenotype": "aa chch DD EE GG PP spsp rere",
+    "sortOrder": 1,
+    "image": "hermelin.jpeg"
+  },
+  {
+    "name": "Himalaya",
+    "english": "Himalayan",
+    "canonicalGenotype": "AA chch DD EE GG PP spsp rere",
+    "sortOrder": 2,
+    "image": "himalaya.jpg"
+  },
+  {
+    "name": "Zobel",
+    "english": "Sable",
+    "canonicalGenotype": "aa cchmcchm DD EE gg PP spsp rere",
+    "sortOrder": 3,
+    "image": "zobel.jpeg"
+  },
+  {
+    "name": "Rotaugenschimmel",
+    "english": "Red-Eyed Roan",
+    "canonicalGenotype": "AA CC DD efef GG pp spsp rere",
+    "sortOrder": 4,
+    "image": "rotaugen-schimmel.jpg"
+  },
+  {
+    "name": "Agouti",
+    "english": "Golden Agouti",
+    "canonicalGenotype": "AA CC DD EE GG PP spsp rere",
+    "sortOrder": 5,
+    "image": "agouti-mit-erklaerung-der-genloci.JPG"
+  },
+  {
+    "name": "Schwarz",
+    "english": "Black",
+    "canonicalGenotype": "aa CC DD EE GG PP spsp rere",
+    "sortOrder": 6,
+    "image": "schwarz.jpg"
+  },
+  {
+    "name": "Silberagouti",
+    "english": "Grey Agouti",
+    "canonicalGenotype": "AA CC DD EE gg PP spsp rere",
+    "sortOrder": 7,
+    "image": "silberagouti.jpg"
+  },
+  {
+    "name": "Anthrazit",
+    "english": "Slate",
+    "canonicalGenotype": "aa CC DD EE gg PP spsp rere",
+    "sortOrder": 8,
+    "image": "anthrazit.jpg"
+  },
+  {
+    "name": "Algierfuchs",
+    "english": "Dark-Eyed Honey",
+    "canonicalGenotype": "AA CC DD ee GG PP spsp rere",
+    "sortOrder": 9,
+    "image": "algierfuchs.jpg"
+  },
+  {
+    "name": "Blau",
+    "english": "Blue",
+    "canonicalGenotype": "aa CC dd EE GG PP spsp rere",
+    "sortOrder": 10,
+    "image": "blau-schwarz-dd.JPG"
+  },
+  {
+    "name": "Gold",
+    "english": "Argente Golden",
+    "canonicalGenotype": "AA CC DD EE GG pp spsp rere",
+    "sortOrder": 11,
+    "image": "gold.jpg"
+  },
+  {
+    "name": "Platin",
+    "english": "Lilac",
+    "canonicalGenotype": "aa CC DD EE GG pp spsp rere",
+    "sortOrder": 12,
+    "image": "platin.JPG"
+  },
+  {
+    "name": "Goldfuchs",
+    "english": "Yellow Fox",
+    "canonicalGenotype": "AA CC DD ee GG pp spsp rere",
+    "sortOrder": 13,
+    "image": "goldfuchs.jpg"
+  },
+  {
+    "name": "Rotfuchs",
+    "english": "Argente Nutmeg",
+    "canonicalGenotype": "aa CC DD ee GG pp spsp rere",
+    "sortOrder": 14,
+    "image": "rotfuchs.JPG"
+  },
+  {
+    "name": "Dilute Gold",
+    "english": "dd Argente Golden",
+    "canonicalGenotype": "AA CC dd EE GG pp spsp rere",
+    "sortOrder": 15,
+    "image": "gold-dd.jpg"
+  },
+  {
+    "name": "Dilute Platin",
+    "english": "dd Lilac",
+    "canonicalGenotype": "aa CC dd EE GG pp spsp rere",
+    "sortOrder": 16,
+    "image": "platin-dd.jpg"
+  },
+  {
+    "name": "Altweiss (REW)",
+    "canonicalGenotype": "aa CC DD EE gg pp spsp rere",
+    "sortOrder": 17,
+    "image": "altweiss-rew.jpeg"
+  },
+  {
+    "name": "Apricot (Blassfuchs)",
+    "canonicalGenotype": "AA CC DD ee gg pp spsp rere",
+    "sortOrder": 18,
+    "image": "apricot-blassfuchs.jpg"
+  },
+  {
+    "name": "Blaufuchs",
+    "canonicalGenotype": "aa CC DD ee gg PP spsp rere",
+    "sortOrder": 19,
+    "image": "blaufuchs.jpg"
+  },
+  {
+    "name": "C-Separator",
+    "canonicalGenotype": "aa CC DD ee gg pp spsp rere",
+    "sortOrder": 20,
+    "image": "c-separator.jpg"
+  },
+  {
+    "name": "Elfenbein",
+    "canonicalGenotype": "AA CC DD EE gg pp spsp rere",
+    "sortOrder": 21,
+    "image": "elfenbein.jpg"
+  },
+  {
+    "name": "Kohlfuchs",
+    "canonicalGenotype": "aa CC DD ee GG PP spsp rere",
+    "sortOrder": 22,
+    "image": "kohlfuchs.jpg"
+  },
+  {
+    "name": "Polarfuchs",
+    "canonicalGenotype": "AA CC DD ee gg PP spsp rere",
+    "sortOrder": 23,
+    "image": "polarfuchs.jpg"
+  },
+  {
+    "name": "Saphir",
+    "canonicalGenotype": "aa CC DD EE GG pp spsp rere",
+    "sortOrder": 24,
+    "image": "saphir.jpg"
+  },
+  {
+    "name": "Orangeschimmel",
+    "canonicalGenotype": "AA CC DD efef GG PP spsp rere",
+    "sortOrder": 25,
+    "image": "schimmel-orangeschimmel.jpg"
+  },
+  {
+    "name": "Topas",
+    "canonicalGenotype": "AA CC DD EE GG pp spsp rere",
+    "sortOrder": 26,
+    "image": "topas.jpg"
+  },
+  {
+    "name": "Platin-Hell",
+    "canonicalGenotype": "aa CC DD EE GG pp spsp rere",
+    "sortOrder": 27,
+    "image": "platin-hell.jpg"
+  },
+  {
+    "name": "Dilute Agouti",
+    "canonicalGenotype": "AA CC dd EE GG PP spsp rere",
+    "sortOrder": 28,
+    "image": "agouti-dd.jpg"
+  },
+  {
+    "name": "Dilute Silberagouti",
+    "canonicalGenotype": "AA CC dd EE gg PP spsp rere",
+    "sortOrder": 29,
+    "image": "silberagouti-dd.jpg"
+  },
+  {
+    "name": "Dilute Kohlfuchs",
+    "canonicalGenotype": "aa CC dd ee GG PP spsp rere",
+    "sortOrder": 30,
+    "image": "kohlfuchs-dd.jpg"
+  },
+  {
+    "name": "Dilute Anthrazit",
+    "canonicalGenotype": "aa CC dd EE gg PP spsp rere",
+    "sortOrder": 31,
+    "image": "anthrazit-dd.jpg"
+  },
+  {
+    "name": "Dilute Algierfuchs",
+    "canonicalGenotype": "AA CC dd ee GG PP spsp rere",
+    "sortOrder": 32
+  },
+  {
+    "name": "Dilute Goldfuchs",
+    "canonicalGenotype": "AA CC dd ee GG pp spsp rere",
+    "sortOrder": 33
+  },
+  {
+    "name": "Dilute Rotfuchs",
+    "canonicalGenotype": "aa CC dd ee GG pp spsp rere",
+    "sortOrder": 34
+  },
+  {
+    "name": "Dilute Polarfuchs",
+    "canonicalGenotype": "AA CC dd ee gg PP spsp rere",
+    "sortOrder": 35
+  },
+  {
+    "name": "Silberschimmel",
+    "canonicalGenotype": "AA CC DD efef gg PP spsp rere",
+    "sortOrder": 36,
+    "image": "silberschimmel.jpg"
+  },
+  {
+    "name": "Polarfuchsschimmel",
+    "canonicalGenotype": "AA CC DD efef gg PP spsp rere",
+    "sortOrder": 37,
+    "image": "polarfuchsschimmel.jpg"
+  },
+  {
+    "name": "Algierfuchsschimmel",
+    "canonicalGenotype": "AA CC DD efef GG PP spsp rere",
+    "sortOrder": 38,
+    "image": "algierfuchsschimmel.jpg"
+  },
+  {
+    "name": "Kohlfuchsschimmel",
+    "canonicalGenotype": "aa CC DD efef GG PP spsp rere",
+    "sortOrder": 39,
+    "image": "kohlfuchsschimmel.jpg"
+  },
+  {
+    "name": "Blaufuchsschimmel",
+    "canonicalGenotype": "aa CC DD efef gg PP spsp rere",
+    "sortOrder": 40,
+    "image": "blaufuchsschimmel.jpg"
+  },
+  {
+    "name": "Kohlfuchs, hell",
+    "canonicalGenotype": "aa CC DD ee GG PP spsp rere",
+    "sortOrder": 41,
+    "image": "kohlfuchs-hell.jpg"
+  },
+  {
+    "name": "Goldfuchs, hell",
+    "canonicalGenotype": "AA CC DD ee GG pp spsp rere",
+    "sortOrder": 42,
+    "image": "goldfuchs-hell.jpg"
+  },
+  {
+    "name": "Goldfuchsschimmel",
+    "canonicalGenotype": "AA CC DD efef GG pp spsp rere",
+    "sortOrder": 43,
+    "image": "goldfuchsschimmel.jpg"
+  },
+  {
+    "name": "Gold-Hell",
+    "canonicalGenotype": "AA CC DD EE GG pp spsp rere",
+    "sortOrder": 44,
+    "image": "gold-hell.jpg"
+  },
+  {
+    "name": "Blaufuchs, hell",
+    "canonicalGenotype": "aa CC DD ee gg PP spsp rere",
+    "sortOrder": 45,
+    "image": "blaufuchs-hell.jpeg"
+  },
+  {
+    "name": "Rotfuchsschimmel",
+    "canonicalGenotype": "aa CC DD efef GG pp spsp rere",
+    "sortOrder": 46,
+    "image": "rotfuchsschimmel.jpg"
+  },
+  {
+    "name": "Polarfuchs, hell",
+    "canonicalGenotype": "AA CC DD ee gg PP spsp rere",
+    "sortOrder": 47,
+    "image": "polarfuchs-hell.jpeg"
+  },
+  {
+    "name": "Kohlfuchsschimmel, hell",
+    "canonicalGenotype": "aa CC DD efef GG PP spsp rere",
+    "sortOrder": 48,
+    "image": "kohlfuchsschimmel-hell.jpg"
+  },
+  {
+    "name": "Rotfuchs, hell",
+    "canonicalGenotype": "aa CC DD ee GG pp spsp rere",
+    "sortOrder": 49,
+    "image": "rotfuchs-hell.jpg"
+  },
+  {
+    "name": "Kohlfuchs-Hell",
+    "canonicalGenotype": "aa CC DD ee GG PP spsp rere",
+    "sortOrder": 50,
+    "image": "kohlfuchs-hell-2.jpg"
+  },
+  {
+    "name": "Algierfuchs, hell",
+    "canonicalGenotype": "AA CC DD ee GG PP spsp rere",
+    "sortOrder": 51,
+    "image": "algierfuchs-hell.JPG"
+  },
+  {
+    "name": "Dilute Topas",
+    "canonicalGenotype": "AA CC dd EE GG pp spsp rere",
+    "sortOrder": 52,
+    "image": "topas-dd.jpg"
+  },
+  {
+    "name": "Dilute Blaufuchs",
+    "canonicalGenotype": "aa CC dd ee gg pp spsp rere",
+    "sortOrder": 53,
+    "image": "blaufuchs-dd.jpg"
+  },
+  {
+    "name": "Marder",
+    "canonicalGenotype": "aa cchmcchm DD EE GG PP spsp rere",
+    "sortOrder": 54,
+    "image": "marder.JPG"
+  },
+  {
+    "name": "Siam",
+    "canonicalGenotype": "aa cchmch DD EE GG PP spsp rere",
+    "sortOrder": 55,
+    "image": "siam-marder-hell.JPG"
+  },
+  {
+    "name": "Zobel-Hell",
+    "canonicalGenotype": "aa cchmch DD EE gg PP spsp rere",
+    "sortOrder": 56,
+    "image": "zobel-hell.jpg"
+  },
+  {
+    "name": "CP-Agouti",
+    "canonicalGenotype": "AA cchmcchm DD EE GG PP spsp rere",
+    "sortOrder": 57,
+    "image": "agouti-cp.jpg"
+  },
+  {
+    "name": "CP-Agouti-Hell",
+    "canonicalGenotype": "AA cchmch DD EE GG PP spsp rere",
+    "sortOrder": 58
+  },
+  {
+    "name": "CP-Silberagouti",
+    "canonicalGenotype": "AA cchmcchm DD EE gg PP spsp rere",
+    "sortOrder": 59,
+    "image": "silberagouti-cp.JPG"
+  },
+  {
+    "name": "CP-Silberagouti-Hell",
+    "canonicalGenotype": "AA cchmch DD EE gg PP spsp rere",
+    "sortOrder": 60
+  },
+  {
+    "name": "CP-Algierfuchs",
+    "canonicalGenotype": "AA cchmcchm DD ee GG PP spsp rere",
+    "sortOrder": 61,
+    "image": "algierfuchs-cp.jpg"
+  },
+  {
+    "name": "CP-Algierfuchs-Hell",
+    "canonicalGenotype": "AA cchmch DD ee GG PP spsp rere",
+    "sortOrder": 62
+  },
+  {
+    "name": "CP-Polarfuchs",
+    "canonicalGenotype": "AA cchmcchm DD ee gg PP spsp rere",
+    "sortOrder": 63,
+    "image": "polarfuchs-cp.jpg"
+  },
+  {
+    "name": "CP-Polarfuchs-Hell",
+    "canonicalGenotype": "AA cchmch DD ee gg PP spsp rere",
+    "sortOrder": 64
+  },
+  {
+    "name": "CP-Fuchs",
+    "canonicalGenotype": "AA cchmcchm dd ee GG PP spsp rere",
+    "sortOrder": 65
+  },
+  {
+    "name": "CP-Fuchs-Hell",
+    "canonicalGenotype": "AA cchmch dd ee GG PP spsp rere",
+    "sortOrder": 66
+  },
+  {
+    "name": "CP-Blaufuchs",
+    "canonicalGenotype": "AA cchmcchm dd ee gg PP spsp rere",
+    "sortOrder": 67
+  },
+  {
+    "name": "CP-Orangeschimmel",
+    "canonicalGenotype": "AA cchmcchm DD efef GG PP spsp rere",
+    "sortOrder": 68
+  },
+  {
+    "name": "CP-Orangeschimmel-Hell",
+    "canonicalGenotype": "AA cchmch DD efef GG PP spsp rere",
+    "sortOrder": 69
+  }
+]

gerbil-manager-web/src/genetics/colorVarietySeed.generated.json

@@ -105,14 +105,14 @@
     "image": "rotfuchs.JPG"
   },
   {
-    "name": "dd Gold",
+    "name": "Dilute Gold",
     "english": "dd Argente Golden",
     "canonicalGenotype": "AA CC dd EE GG pp spsp rere",
     "sortOrder": 15,
     "image": "gold-dd.jpg"
   },
   {
-    "name": "dd Platin",
+    "name": "Dilute Platin",
     "english": "dd Lilac",
     "canonicalGenotype": "aa CC dd EE GG pp spsp rere",
     "sortOrder": 16,
@@ -185,222 +185,242 @@
     "image": "platin-hell.jpg"
   },
   {
-    "name": "Agouti dd",
+    "name": "Dilute Agouti",
     "canonicalGenotype": "AA CC dd EE GG PP spsp rere",
     "sortOrder": 28,
     "image": "agouti-dd.jpg"
   },
   {
-    "name": "Silberagouti dd",
+    "name": "Dilute Silberagouti",
     "canonicalGenotype": "AA CC dd EE gg PP spsp rere",
     "sortOrder": 29,
     "image": "silberagouti-dd.jpg"
   },
   {
-    "name": "Kohlfuchs dd",
+    "name": "Dilute Kohlfuchs",
     "canonicalGenotype": "aa CC dd ee GG PP spsp rere",
     "sortOrder": 30,
     "image": "kohlfuchs-dd.jpg"
   },
   {
-    "name": "Anthrazit dd",
+    "name": "Dilute Anthrazit",
     "canonicalGenotype": "aa CC dd EE gg PP spsp rere",
     "sortOrder": 31,
     "image": "anthrazit-dd.jpg"
   },
+  {
+    "name": "Dilute Algierfuchs",
+    "canonicalGenotype": "AA CC dd ee GG PP spsp rere",
+    "sortOrder": 32
+  },
+  {
+    "name": "Dilute Goldfuchs",
+    "canonicalGenotype": "AA CC dd ee GG pp spsp rere",
+    "sortOrder": 33
+  },
+  {
+    "name": "Dilute Rotfuchs",
+    "canonicalGenotype": "aa CC dd ee GG pp spsp rere",
+    "sortOrder": 34
+  },
+  {
+    "name": "Dilute Polarfuchs",
+    "canonicalGenotype": "AA CC dd ee gg PP spsp rere",
+    "sortOrder": 35
+  },
   {
     "name": "Silberschimmel",
     "canonicalGenotype": "AA CC DD e[f]e[f] gg PP spsp rere",
-    "sortOrder": 32,
+    "sortOrder": 36,
     "image": "silberschimmel.jpg"
   },
   {
     "name": "Polarfuchsschimmel",
     "canonicalGenotype": "AA CC DD e[f]e[f] gg PP spsp rere",
-    "sortOrder": 33,
+    "sortOrder": 37,
     "image": "polarfuchsschimmel.jpg"
   },
   {
     "name": "Algierfuchsschimmel",
     "canonicalGenotype": "AA CC DD e[f]e[f] GG PP spsp rere",
-    "sortOrder": 34,
+    "sortOrder": 38,
     "image": "algierfuchsschimmel.jpg"
   },
   {
     "name": "Kohlfuchsschimmel",
     "canonicalGenotype": "aa CC DD e[f]e[f] GG PP spsp rere",
-    "sortOrder": 35,
+    "sortOrder": 39,
     "image": "kohlfuchsschimmel.jpg"
   },
   {
     "name": "Blaufuchsschimmel",
     "canonicalGenotype": "aa CC DD e[f]e[f] gg PP spsp rere",
-    "sortOrder": 36,
+    "sortOrder": 40,
     "image": "blaufuchsschimmel.jpg"
   },
   {
     "name": "Kohlfuchs, hell",
     "canonicalGenotype": "aa CC DD ee GG PP spsp rere",
-    "sortOrder": 37,
+    "sortOrder": 41,
     "image": "kohlfuchs-hell.jpg"
   },
   {
     "name": "Goldfuchs, hell",
     "canonicalGenotype": "AA CC DD ee GG pp spsp rere",
-    "sortOrder": 38,
+    "sortOrder": 42,
     "image": "goldfuchs-hell.jpg"
   },
   {
     "name": "Goldfuchsschimmel",
     "canonicalGenotype": "AA CC DD e[f]e[f] GG pp spsp rere",
-    "sortOrder": 39,
+    "sortOrder": 43,
     "image": "goldfuchsschimmel.jpg"
   },
   {
     "name": "Gold-Hell",
     "canonicalGenotype": "AA CC DD EE GG pp spsp rere",
-    "sortOrder": 40,
+    "sortOrder": 44,
     "image": "gold-hell.jpg"
   },
   {
     "name": "Blaufuchs, hell",
     "canonicalGenotype": "aa CC DD ee gg PP spsp rere",
-    "sortOrder": 41,
+    "sortOrder": 45,
     "image": "blaufuchs-hell.jpeg"
   },
   {
     "name": "Rotfuchsschimmel",
     "canonicalGenotype": "aa CC DD e[f]e[f] GG pp spsp rere",
-    "sortOrder": 42,
+    "sortOrder": 46,
     "image": "rotfuchsschimmel.jpg"
   },
   {
     "name": "Polarfuchs, hell",
     "canonicalGenotype": "AA CC DD ee gg PP spsp rere",
-    "sortOrder": 43,
+    "sortOrder": 47,
     "image": "polarfuchs-hell.jpeg"
   },
   {
     "name": "Kohlfuchsschimmel, hell",
     "canonicalGenotype": "aa CC DD e[f]e[f] GG PP spsp rere",
-    "sortOrder": 44,
+    "sortOrder": 48,
     "image": "kohlfuchsschimmel-hell.jpg"
   },
   {
     "name": "Rotfuchs, hell",
     "canonicalGenotype": "aa CC DD ee GG pp spsp rere",
-    "sortOrder": 45,
+    "sortOrder": 49,
     "image": "rotfuchs-hell.jpg"
   },
   {
     "name": "Kohlfuchs-Hell",
     "canonicalGenotype": "aa CC DD ee GG PP spsp rere",
-    "sortOrder": 46,
+    "sortOrder": 50,
     "image": "kohlfuchs-hell-2.jpg"
   },
   {
     "name": "Algierfuchs, hell",
     "canonicalGenotype": "AA CC DD ee GG PP spsp rere",
-    "sortOrder": 47,
+    "sortOrder": 51,
     "image": "algierfuchs-hell.JPG"
   },
   {
-    "name": "Topas dd",
+    "name": "Dilute Topas",
     "canonicalGenotype": "AA CC dd EE GG pp spsp rere",
-    "sortOrder": 48,
+    "sortOrder": 52,
     "image": "topas-dd.jpg"
   },
   {
-    "name": "Blaufuchs dd",
+    "name": "Dilute Blaufuchs",
     "canonicalGenotype": "aa CC dd ee gg pp spsp rere",
-    "sortOrder": 49,
+    "sortOrder": 53,
     "image": "blaufuchs-dd.jpg"
   },
   {
     "name": "Marder",
     "canonicalGenotype": "aa c[chm]c[chm] DD EE GG PP spsp rere",
-    "sortOrder": 50,
+    "sortOrder": 54,
     "image": "marder.JPG"
   },
   {
     "name": "Siam",
     "canonicalGenotype": "aa c[chm]c[h] DD EE GG PP spsp rere",
-    "sortOrder": 51,
+    "sortOrder": 55,
     "image": "siam-marder-hell.JPG"
   },
   {
     "name": "Zobel-Hell",
     "canonicalGenotype": "aa c[chm]c[h] DD EE gg PP spsp rere",
-    "sortOrder": 52,
+    "sortOrder": 56,
     "image": "zobel-hell.jpg"
   },
   {
     "name": "CP-Agouti",
     "canonicalGenotype": "AA c[chm]c[chm] DD EE GG PP spsp rere",
-    "sortOrder": 53,
+    "sortOrder": 57,
     "image": "agouti-cp.jpg"
   },
   {
     "name": "CP-Agouti-Hell",
     "canonicalGenotype": "AA c[chm]c[h] DD EE GG PP spsp rere",
-    "sortOrder": 54
+    "sortOrder": 58
   },
   {
     "name": "CP-Silberagouti",
     "canonicalGenotype": "AA c[chm]c[chm] DD EE gg PP spsp rere",
-    "sortOrder": 55,
+    "sortOrder": 59,
     "image": "silberagouti-cp.JPG"
   },
   {
     "name": "CP-Silberagouti-Hell",
     "canonicalGenotype": "AA c[chm]c[h] DD EE gg PP spsp rere",
-    "sortOrder": 56
+    "sortOrder": 60
   },
   {
     "name": "CP-Algierfuchs",
     "canonicalGenotype": "AA c[chm]c[chm] DD ee GG PP spsp rere",
-    "sortOrder": 57,
+    "sortOrder": 61,
     "image": "algierfuchs-cp.jpg"
   },
   {
     "name": "CP-Algierfuchs-Hell",
     "canonicalGenotype": "AA c[chm]c[h] DD ee GG PP spsp rere",
-    "sortOrder": 58
+    "sortOrder": 62
   },
   {
     "name": "CP-Polarfuchs",
     "canonicalGenotype": "AA c[chm]c[chm] DD ee gg PP spsp rere",
-    "sortOrder": 59,
+    "sortOrder": 63,
     "image": "polarfuchs-cp.jpg"
   },
   {
     "name": "CP-Polarfuchs-Hell",
     "canonicalGenotype": "AA c[chm]c[h] DD ee gg PP spsp rere",
-    "sortOrder": 60
+    "sortOrder": 64
   },
   {
     "name": "CP-Fuchs",
     "canonicalGenotype": "AA c[chm]c[chm] dd ee GG PP spsp rere",
-    "sortOrder": 61
+    "sortOrder": 65
   },
   {
     "name": "CP-Fuchs-Hell",
     "canonicalGenotype": "AA c[chm]c[h] dd ee GG PP spsp rere",
-    "sortOrder": 62
+    "sortOrder": 66
   },
   {
     "name": "CP-Blaufuchs",
     "canonicalGenotype": "AA c[chm]c[chm] dd ee gg PP spsp rere",
-    "sortOrder": 63
+    "sortOrder": 67
   },
   {
     "name": "CP-Orangeschimmel",
     "canonicalGenotype": "AA c[chm]c[chm] DD e[f]e[f] GG PP spsp rere",
-    "sortOrder": 64
+    "sortOrder": 68
   },
   {
     "name": "CP-Orangeschimmel-Hell",
     "canonicalGenotype": "AA c[chm]c[h] DD e[f]e[f] GG PP spsp rere",
-    "sortOrder": 65
+    "sortOrder": 69
   }
 ]

gerbil-manager-web/src/index.css

@@ -539,28 +539,57 @@ textarea {
   margin: 0.5rem 0 1rem;
   padding: 0;
   display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
+  /* GEN-4: wider min-width prevents long names (CP-Silberagouti-Hell) from overflowing */
+  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
   gap: 0.5rem;
 }
 
+/* GEN-4 layout fix: image left, body centre (name + genotype stacked), prob right.
+   align-items: stretch so all three columns fill the card height consistently. */
 .farbschlag-card {
   display: flex;
   align-items: center;
-  justify-content: space-between;
   gap: 0.5rem;
   padding: 0.6rem 0.9rem;
   border: 1px solid var(--color-border);
   border-radius: 0.6rem;
   background: var(--color-surface);
+  overflow: hidden; /* contain long genotype strings */
+}
+
+.farbschlag-card__img {
+  flex-shrink: 0;
+}
+
+/* Body takes the middle space and allows wrapping for long names */
+.farbschlag-card__body {
+  flex: 1;
+  min-width: 0; /* allow flex child to shrink below content size */
+  display: flex;
+  flex-direction: column;
+  gap: 0.15rem;
 }
 
 .farbschlag-card__name {
   font-weight: 600;
+  overflow-wrap: break-word;
+  word-break: break-word;
+}
+
+/* Genotype code shown below the name — muted, small, wrappable */
+.farbschlag-card__geno {
+  font-size: 0.7rem;
+  color: var(--color-text-muted, #666);
+  overflow-wrap: break-word;
+  word-break: break-all;
+  opacity: 0.8;
 }
 
 .farbschlag-card__prob {
+  flex-shrink: 0;
   color: var(--color-accent);
   white-space: nowrap;
+  text-align: right;
 }
 
 /* UX-MOBILE-2: scroll wrapper so genotype table scrolls horizontally on mobile

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

@@ -2,6 +2,7 @@ import { useMemo, useState, type ReactNode } from 'react'
 import { Link, useParams } from 'react-router-dom'
 import { de } from '../strings/de'
 import { getGerbil, updateGerbil } from '../api/gerbils'
+import { listLitters as listLittersPaged } from '../api/litters'
 import { listColorVarieties, listContacts, listEnclosures, listLitters } from '../api/lookups'
 import { useApi, useMutation } from '../hooks/useApi'
 import { formatDate, genderLabel, statusLabel } from '../format/labels'
@@ -55,6 +56,10 @@ export default function GerbilDetailPage() {
   const enclosures = useApi(() => listEnclosures(), [])
   const contacts = useApi(() => listContacts(), [])
   const litters = useApi(() => listLitters(), [])
+  const parentLitters = useApi(
+    () => listLittersPaged({ filter: `fatherId=${id}|motherId=${id}`, orderBy: 'date desc', pageSize: 50 }),
+    [id],
+  )
 
   const colorName = useMemo(
     () => new Map((colorVarieties.data ?? []).map((c) => [c.id, c.name])),
@@ -237,6 +242,32 @@ export default function GerbilDetailPage() {
         {saveCharacter.error && <span className="error-text">{saveCharacter.error}</span>}
       </div>
 
+      <h3>{t.detail.parentLittersTitle}</h3>
+      {parentLitters.loading && <p className="muted">{de.common.loading}</p>}
+      {!parentLitters.loading && (parentLitters.data?.items.length ?? 0) === 0 && (
+        <p className="muted">{t.detail.parentLittersEmpty}</p>
+      )}
+      {(parentLitters.data?.items.length ?? 0) > 0 && (
+        <ul className="card-list">
+          {(parentLitters.data?.items ?? []).map((litter) => (
+            <li key={litter.id}>
+              <Link to={`/wuerfe/${litter.id}`} className="gerbil-card">
+                <span className="gerbil-card__name">{litter.name}</span>
+                <span className="badge badge--active">
+                  {litter.fatherId === id ? t.detail.parentLittersRoleVater : t.detail.parentLittersRoleMutter}
+                </span>
+                <span className="gerbil-card__meta">{formatDate(litter.date)}</span>
+                {litter.totalBorn !== null && (
+                  <span className="gerbil-card__meta">
+                    {litter.totalBorn} {de.pages.litters.countLabel}
+                  </span>
+                )}
+              </Link>
+            </li>
+          ))}
+        </ul>
+      )}
+
       <h3 className="visually-hidden">{t.detail.moreData}</h3>
       <div className="tabs" role="tablist">
         {(['photos', 'health', 'weight'] as const).map((key) => (

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

@@ -8,6 +8,8 @@ import { useApi, useMutation } from '../hooks/useApi'
 import { genderLabel, statusLabel } from '../format/labels'
 import { fromDisplayString } from '../genetics'
 import FarbschlagImage from '../components/FarbschlagImage'
+import NameSuggestPanel from '../components/NameSuggestPanel'
+import '../components/NameSuggestPanel.css'
 
 interface FormState {
   name: string
@@ -111,6 +113,7 @@ export default function GerbilFormPage() {
   const [form, setForm] = useState<FormState>(EMPTY)
   const [errors, setErrors] = useState<Partial<Record<keyof FormState, string>>>({})
   const [initializedFor, setInitializedFor] = useState<string | null>(null)
+  const [showNameSuggest, setShowNameSuggest] = useState(false)
 
   const existing = useApi(() => (id ? getGerbil(id) : Promise.resolve(null)), [id])
   const colorVarieties = useApi(() => listColorVarieties(), [])
@@ -197,16 +200,33 @@ export default function GerbilFormPage() {
       <h2>{isEdit ? t.form.editTitle : t.form.createTitle}</h2>
 
       <form className="form" onSubmit={onSubmit} noValidate>
-        <label className="field">
-          <span>{t.fields.name} *</span>
-          <input
-            className="input"
-            value={form.name}
-            onChange={(e) => set('name', e.target.value)}
-            aria-invalid={Boolean(errors.name)}
-          />
+        <div className="field">
+          <label htmlFor="gerbil-name">{t.fields.name} *</label>
+          <div className="namegen-name-row">
+            <input
+              id="gerbil-name"
+              className="input"
+              value={form.name}
+              onChange={(e) => set('name', e.target.value)}
+              aria-invalid={Boolean(errors.name)}
+            />
+            <button
+              type="button"
+              className="btn"
+              onClick={() => setShowNameSuggest((v) => !v)}
+            >
+              {de.namegen.button}
+            </button>
+          </div>
           {errors.name && <small className="error-text">{errors.name}</small>}
-        </label>
+        </div>
+        {showNameSuggest && (
+          <NameSuggestPanel
+            gender={form.gender}
+            onPick={(name) => { set('name', name); setShowNameSuggest(false) }}
+            onClose={() => setShowNameSuggest(false)}
+          />
+        )}
 
         <label className="field">
           <span>{t.fields.gender} *</span>

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

@@ -105,6 +105,11 @@ export const de = {
         tabPlaceholder: 'Dieser Bereich entsteht in einem späteren Schritt.',
         notFound: 'Diese Rennmaus wurde nicht gefunden.',
         moreData: 'Weitere Daten',
+        // ANIMAL-LITTERS: Würfe als Elternteil
+        parentLittersTitle: 'Würfe als Elternteil',
+        parentLittersEmpty: 'Keine Würfe als Elternteil erfasst.',
+        parentLittersRoleVater: 'Vater',
+        parentLittersRoleMutter: 'Mutter',
       },
       // Formular (anlegen/bearbeiten)
       form: {
@@ -813,6 +818,19 @@ export const de = {
     resetButton: 'Filter zurücksetzen',
     closeButton: 'Schließen',
   },
+  // ── FEAT-NAMEGEN: Namensvorschläge (KI-gestützt, UC-1 Einzeltier) ──
+  namegen: {
+    button: 'Name vorschlagen',
+    panelTitle: 'Namensvorschläge',
+    letterLabel: 'Anfangsbuchstabe',
+    letterPlaceholder: 'z. B. A',
+    usagesLabel: 'Herkunftskultur',
+    loadButton: 'Vorschläge laden',
+    loading: 'Lade Vorschläge …',
+    empty: 'Keine Vorschläge — andere Einstellungen versuchen.',
+    keyMissing: 'Namensvorschläge benötigen einen API-Key — bitte in den Einstellungen konfigurieren.',
+    close: 'Schließen',
+  },
 } as const
 
 export type Strings = typeof de

tools/import/conflict-decisions.json

@@ -105,6 +105,13 @@
       "decision": "death date = 17.04.2016 (the '2018' variant was wrong — it had leaked as '/ +2018' into the genotype field; parse-leak already fixed in IMPORT-POLISH)",
       "dateOfDeath": "17.04.2016",
       "source": "Julian 2026-06-07 — HUMANQUESTION D6"
+    },
+    {
+      "name": "Kazu von den Kleinen Chaoten",
+      "dob": "23.04.2013",
+      "decision": "E-locus = ee[f], G-locus = GG (one source wrote UwUw = GG in international notation), P-locus = PP — resolves the 3 contested loci",
+      "genotype": "Aa Cc[chm] DD ee[f] GG PP Spsp",
+      "source": "Julian 2026-06-07 — HUMANQUESTION D6"
     }
   ]
 }