Add half-body portrait support: update API, UI, and localization for new portrait type

docs/protocol.md

@@ -264,7 +264,7 @@ overload does not slow walking. `hasLocker` is true when the pupil has an assign
 is how many items remain at home, not the list. The people list does not include any of these
 fields. Today's history is a separate GET.
 
-`hasAvatar` and `hasFullBody` tell the client whether PNG files already exist on disk for this
+`hasAvatar`, `hasHalfBody` and `hasFullBody` tell the client whether PNG files already exist on disk for this
 person. They are filled on the HTTP thread after the worker returns the card; generation does
 not happen on this request.
 
@@ -318,6 +318,7 @@ not happen on this request.
   "hasLocker": false,
   "homeCount": 3,
   "hasAvatar": false,
+  "hasHalfBody": false,
   "hasFullBody": false
 }
 ```
@@ -357,15 +358,15 @@ the action or apparel def the caption was built from.
 
 ### `GET /api/schools/{id}/people/{personId}/portrait`
 
-Returns a generated PNG when one exists. Query `kind=avatar|full` selects head-and-shoulders or
+Returns a generated PNG when one exists. Query `kind=avatar|half|full` selects head-and-shoulders,
-full-body. Unknown school is `404` `unknown-school`; unknown person is `404` `unknown-person`;
+waist-up or full-body. Unknown school is `404` `unknown-school`; unknown person is `404` `unknown-person`;
 missing file is `404` `portrait-missing`. Invalid `kind` is `400` `invalid-query`. Content-Type
 is `image/png`. Opening the card does not generate; use POST when the player asks.
 
 ### `POST /api/schools/{id}/people/{personId}/portrait`
 
 Generates (or regenerates) a portrait through SwarmUI on the server. Same `kind` query as GET.
-Success is `201` with `{ "kind", "hasAvatar", "hasFullBody" }` and a `Location` header pointing
+Success is `201` with `{ "kind", "hasAvatar", "hasHalfBody", "hasFullBody" }` and a `Location` header pointing
 at GET. SwarmUI is not configured when `SwarmUi:BaseUrl` is empty — `503` `swarmui-not-configured`.
 Swarm errors are `502` `swarmui-unavailable`; a slow backend is `504` `swarmui-timeout`. Files
 land under `saves/{id}.portraits/` and survive until the school is deleted.

src/HSchool.Client/src/i18n/strings.ts

@@ -155,8 +155,10 @@ const ru = {
   peopleTabOverview: 'Обзор',
   peopleTabPortrait: 'Портрет',
   peoplePortraitAvatar: 'Аватар',
+  peoplePortraitHalf: 'По пояс',
   peoplePortraitFull: 'В полный рост',
   peoplePortraitGenerateAvatar: 'Сгенерировать аватар',
+  peoplePortraitGenerateHalf: 'Сгенерировать по пояс',
   peoplePortraitGenerateFull: 'Сгенерировать в полный рост',
   peoplePortraitGenerating: 'Генерация…',
   peoplePortraitMissing: 'Ещё не сгенерировано.',
@@ -410,8 +412,10 @@ const en: Messages = {
   peopleTabOverview: 'Overview',
   peopleTabPortrait: 'Portrait',
   peoplePortraitAvatar: 'Avatar',
+  peoplePortraitHalf: 'Waist up',
   peoplePortraitFull: 'Full body',
   peoplePortraitGenerateAvatar: 'Generate avatar',
+  peoplePortraitGenerateHalf: 'Generate waist up',
   peoplePortraitGenerateFull: 'Generate full body',
   peoplePortraitGenerating: 'Generating…',
   peoplePortraitMissing: 'Not generated yet.',

src/HSchool.Client/src/net/api.ts

@@ -298,6 +298,7 @@ export interface PersonCard {
   readonly hasLocker: boolean;
   readonly homeCount: number;
   readonly hasAvatar: boolean;
+  readonly hasHalfBody: boolean;
   readonly hasFullBody: boolean;
 }
 
@@ -400,13 +401,16 @@ export async function fetchGameStatus(): Promise<GameStatus> {
   return request<GameStatus>('/api/status');
 }
 
+export type PortraitKind = 'avatar' | 'half' | 'full';
+
 export interface PortraitResult {
-  readonly kind: 'avatar' | 'full';
+  readonly kind: PortraitKind;
   readonly hasAvatar: boolean;
+  readonly hasHalfBody: boolean;
   readonly hasFullBody: boolean;
 }
 
-export function portraitUrl(schoolId: number, personId: string, kind: 'avatar' | 'full'): string {
+export function portraitUrl(schoolId: number, personId: string, kind: PortraitKind): string {
   const params = new URLSearchParams({ kind });
   return `/api/schools/${schoolId}/people/${encodeURIComponent(personId)}/portrait?${params.toString()}`;
 }
@@ -414,7 +418,7 @@ export function portraitUrl(schoolId: number, personId: string, kind: 'avatar' |
 export async function generatePortrait(
   schoolId: number,
   personId: string,
-  kind: 'avatar' | 'full',
+  kind: PortraitKind,
 ): Promise<PortraitResult> {
   const params = new URLSearchParams({ kind });
   return request<PortraitResult>(

src/HSchool.Client/src/style.css

@@ -634,7 +634,8 @@ body {
   object-fit: cover;
 }
 
-.people__portrait--full {
+.people__portrait--full,
+.people__portrait--half {
   width: min(100%, 384px);
   height: auto;
 }

src/HSchool.Client/src/ui/managementPanel.test.ts

@@ -73,6 +73,7 @@ function personCard(): PersonCard {
     hasLocker: false,
     homeCount: 0,
     hasAvatar: false,
+    hasHalfBody: false,
     hasFullBody: false,
   };
 }

src/HSchool.Client/src/ui/personCard.test.ts

@@ -61,6 +61,7 @@ function card(overrides: Partial<PersonCard> = {}): PersonCard {
     hasLocker: false,
     homeCount: 2,
     hasAvatar: false,
+    hasHalfBody: false,
     hasFullBody: false,
     ...overrides,
   };
@@ -171,6 +172,8 @@ describe('renderPersonCard', () => {
     const panel = root.querySelector('.people__portrait-panel');
     expect(panel).not.toBeNull();
     expect(panel?.textContent).toContain(t('peoplePortraitGenerateAvatar'));
+    expect(panel?.textContent).toContain(t('peoplePortraitGenerateHalf'));
+    expect(panel?.textContent).toContain(t('peoplePortraitGenerateFull'));
     expect(panel?.hasAttribute('hidden')).toBe(false);
     expect(root.querySelector('[data-card-tab="apparel"]')?.hasAttribute('hidden')).toBe(true);
   });

src/HSchool.Client/src/ui/personCard.ts

@@ -7,7 +7,7 @@ import type {
   PersonRel,
   PersonRole,
 } from '../net/api.ts';
-import { portraitUrl } from '../net/api.ts';
+import { portraitUrl, type PortraitKind } from '../net/api.ts';
 import { formatGameTimeOfDay } from '../format/gameTime.ts';
 import { t, type MessageKey } from '../i18n/strings.ts';
 import { el } from './dom.ts';
@@ -31,8 +31,8 @@ export interface RenderPersonCardOptions {
   readonly onLogDir?: (dir: PersonLogDir) => void;
   readonly onLogPage?: (page: number) => void;
   readonly schoolId?: number | null;
-  readonly onGeneratePortrait?: (kind: 'avatar' | 'full') => void;
+  readonly onGeneratePortrait?: (kind: PortraitKind) => void;
-  readonly portraitBusy?: 'avatar' | 'full' | null;
+  readonly portraitBusy?: PortraitKind | null;
   readonly portraitError?: string | null;
   readonly swarmConfigured?: boolean;
   /** null while checking or when SwarmUI is not configured. */
@@ -343,29 +343,19 @@ function fillNow(
 function fillPortrait(parent: HTMLElement, card: PersonCard, options: RenderPersonCardOptions): void {
   parent.append(swarmStatusLine(options));
 
-  parent.append(el('h4', { class: 'people__section-title', text: t('peoplePortraitAvatar') }));
+  for (const variant of PORTRAIT_VARIANTS) {
-  parent.append(portraitPreview(card, options, 'avatar'));
+    parent.append(el('h4', { class: 'people__section-title', text: t(variant.titleKey) }));
-  parent.append(
+    parent.append(portraitPreview(card, options, variant));
-    el('button', {
+    parent.append(
-      class: 'button button--small',
+      el('button', {
-      type: 'button',
+        class: 'button button--small',
-      text: options.portraitBusy === 'avatar' ? t('peoplePortraitGenerating') : t('peoplePortraitGenerateAvatar'),
+        type: 'button',
-      disabled: (options.portraitBusy ?? null) !== null || !portraitGenerateEnabled(options),
+        text: options.portraitBusy === variant.kind ? t('peoplePortraitGenerating') : t(variant.generateKey),
-      onClick: () => options.onGeneratePortrait?.('avatar'),
+        disabled: (options.portraitBusy ?? null) !== null || !portraitGenerateEnabled(options),
-    }),
+        onClick: () => options.onGeneratePortrait?.(variant.kind),
-  );
+      }),
-
+    );
-  parent.append(el('h4', { class: 'people__section-title', text: t('peoplePortraitFull') }));
+  }
-  parent.append(portraitPreview(card, options, 'full'));
-  parent.append(
-    el('button', {
-      class: 'button button--small',
-      type: 'button',
-      text: options.portraitBusy === 'full' ? t('peoplePortraitGenerating') : t('peoplePortraitGenerateFull'),
-      disabled: (options.portraitBusy ?? null) !== null || !portraitGenerateEnabled(options),
-      onClick: () => options.onGeneratePortrait?.('full'),
-    }),
-  );
 
   if (options.swarmConfigured === false) {
     parent.append(el('p', { class: 'panel__empty', text: t('peoplePortraitUnavailable') }));
@@ -379,6 +369,36 @@ function fillPortrait(parent: HTMLElement, card: PersonCard, options: RenderPers
   }
 }
 
+const PORTRAIT_VARIANTS: readonly {
+  readonly kind: PortraitKind;
+  readonly titleKey: MessageKey;
+  readonly generateKey: MessageKey;
+  readonly cssClass: string;
+  readonly hasImage: (card: PersonCard) => boolean;
+}[] = [
+  {
+    kind: 'avatar',
+    titleKey: 'peoplePortraitAvatar',
+    generateKey: 'peoplePortraitGenerateAvatar',
+    cssClass: 'people__portrait--avatar',
+    hasImage: (card) => card.hasAvatar,
+  },
+  {
+    kind: 'half',
+    titleKey: 'peoplePortraitHalf',
+    generateKey: 'peoplePortraitGenerateHalf',
+    cssClass: 'people__portrait--half',
+    hasImage: (card) => card.hasHalfBody,
+  },
+  {
+    kind: 'full',
+    titleKey: 'peoplePortraitFull',
+    generateKey: 'peoplePortraitGenerateFull',
+    cssClass: 'people__portrait--full',
+    hasImage: (card) => card.hasFullBody,
+  },
+];
+
 function portraitGenerateEnabled(options: RenderPersonCardOptions): boolean {
   if (options.swarmConfigured !== true) {
     return false;
@@ -403,13 +423,16 @@ function swarmStatusLine(options: RenderPersonCardOptions): HTMLElement {
   return el('p', { class: 'people__swarm-status people__swarm-status--pending', text: t('peoplePortraitSwarmChecking') });
 }
 
-function portraitPreview(card: PersonCard, options: RenderPersonCardOptions, kind: 'avatar' | 'full'): HTMLElement {
+function portraitPreview(
-  const hasImage = kind === 'avatar' ? card.hasAvatar : card.hasFullBody;
+  card: PersonCard,
-  if (hasImage && options.schoolId !== null && options.schoolId !== undefined) {
+  options: RenderPersonCardOptions,
+  variant: (typeof PORTRAIT_VARIANTS)[number],
+): HTMLElement {
+  if (variant.hasImage(card) && options.schoolId !== null && options.schoolId !== undefined) {
     return el('img', {
-      class: kind === 'avatar' ? 'people__portrait people__portrait--avatar' : 'people__portrait people__portrait--full',
+      class: `people__portrait ${variant.cssClass}`,
       alt: card.fullName,
-      src: portraitUrl(options.schoolId, card.id, kind),
+      src: portraitUrl(options.schoolId, card.id, variant.kind),
     });
   }
 

src/HSchool.Client/src/ui/personCardHost.ts

@@ -8,6 +8,7 @@ import {
   type PersonLogDir,
   type PersonLogPage,
   type PersonLogQuery,
+  type PortraitKind,
 } from '../net/api.ts';
 import { getLocale } from '../i18n/locale.ts';
 import { t } from '../i18n/strings.ts';
@@ -22,7 +23,7 @@ import {
 /** Shared card tab state, portrait generation, Swarm availability and the day log. */
 export class PersonCardHost {
   private tab: PersonCardTab = 'overview';
-  private portraitBusy: 'avatar' | 'full' | null = null;
+  private portraitBusy: PortraitKind | null = null;
   private portraitError: string | null = null;
   private swarmConfigured = false;
   private swarmConnected: boolean | null = null;
@@ -168,7 +169,7 @@ export class PersonCardHost {
     }
   }
 
-  private async generate(kind: 'avatar' | 'full'): Promise<void> {
+  private async generate(kind: PortraitKind): Promise<void> {
     const schoolId = this.schoolId;
     const personId = this.painted?.id;
     if (schoolId === null || personId === undefined || this.portraitBusy !== null) {
@@ -185,6 +186,7 @@ export class PersonCardHost {
       this.painted = {
         ...card,
         hasAvatar: result.hasAvatar,
+        hasHalfBody: result.hasHalfBody,
         hasFullBody: result.hasFullBody,
       };
     } catch (error) {

src/HSchool.Server/Api/PeopleModels.cs

@@ -79,6 +79,7 @@ internal sealed record PersonCardResponse(
     bool HasLocker = false,
     int HomeCount = 0,
     bool HasAvatar = false,
+    bool HasHalfBody = false,
     bool HasFullBody = false);
 
 internal sealed record WornItemResponse(

src/HSchool.Server/Api/SchoolEndpoints.cs

@@ -246,7 +246,7 @@ internal static class SchoolEndpoints
 
             if (!PortraitKindParser.TryParse(kind, out var portraitKind))
             {
-                return Problem(StatusCodes.Status400BadRequest, "invalid-query", "kind must be avatar or full.");
+                return Problem(StatusCodes.Status400BadRequest, "invalid-query", "kind must be avatar, half, or full.");
             }
 
             var lookup = await portraits.EnsurePersonAsync(id, personId, cancellationToken);
@@ -284,7 +284,7 @@ internal static class SchoolEndpoints
 
             if (!PortraitKindParser.TryParse(kind, out var portraitKind))
             {
-                return Problem(StatusCodes.Status400BadRequest, "invalid-query", "kind must be avatar or full.");
+                return Problem(StatusCodes.Status400BadRequest, "invalid-query", "kind must be avatar, half, or full.");
             }
 
             if (!portraits.IsGenerationEnabled)
@@ -296,10 +296,11 @@ internal static class SchoolEndpoints
             return result.Outcome switch
             {
                 PortraitGenerationOutcome.Succeeded => Results.Created(
-                    $"/api/schools/{id}/people/{Uri.EscapeDataString(personId)}/portrait?kind={(portraitKind == PortraitKind.Avatar ? "avatar" : "full")}",
+                    $"/api/schools/{id}/people/{Uri.EscapeDataString(personId)}/portrait?kind={PortraitKindParser.ToApiValue(portraitKind)}",
                     new PortraitResponse(
-                        portraitKind == PortraitKind.Avatar ? "avatar" : "full",
+                        PortraitKindParser.ToApiValue(portraitKind),
                         result.HasAvatar,
+                        result.HasHalfBody,
                         result.HasFullBody)),
                 PortraitGenerationOutcome.UnknownPerson =>
                     Problem(StatusCodes.Status404NotFound, "unknown-person", "That person is not in the school."),

src/HSchool.Server/Game/PortraitKind.cs

@@ -3,6 +3,7 @@ namespace HSchool.Server.Game;
 internal enum PortraitKind
 {
     Avatar,
+    Half,
     Full,
 }
 
@@ -16,6 +17,12 @@ internal static class PortraitKindParser
             return true;
         }
 
+        if (string.Equals(value, "half", StringComparison.OrdinalIgnoreCase))
+        {
+            kind = PortraitKind.Half;
+            return true;
+        }
+
         if (string.Equals(value, "full", StringComparison.OrdinalIgnoreCase))
         {
             kind = PortraitKind.Full;
@@ -25,4 +32,12 @@ internal static class PortraitKindParser
         kind = default;
         return false;
     }
+
+    public static string ToApiValue(PortraitKind kind) => kind switch
+    {
+        PortraitKind.Avatar => "avatar",
+        PortraitKind.Half => "half",
+        PortraitKind.Full => "full",
+        _ => throw new ArgumentOutOfRangeException(nameof(kind)),
+    };
 }

src/HSchool.Server/Game/PortraitPromptBuilder.cs

@@ -7,7 +7,7 @@ internal static class PortraitPromptBuilder
 {
     public static (string Positive, string Negative) Build(PersonCardResponse card, SwarmUiSettings settings, PortraitKind kind)
     {
-        var preset = kind == PortraitKind.Avatar ? settings.Avatar : settings.FullBody;
+        var preset = settings.PresetFor(kind);
         var parts = new List<string>();
 
         if (!string.IsNullOrWhiteSpace(settings.Positive))

src/HSchool.Server/Game/PortraitService.cs

@@ -16,13 +16,13 @@ internal sealed class PortraitService(
 
     public bool IsGenerationEnabled => swarm.IsConfigured;
 
-    public (bool HasAvatar, bool HasFullBody) Flags(int schoolId, string personId) =>
+    public (bool HasAvatar, bool HasHalfBody, bool HasFullBody) Flags(int schoolId, string personId) =>
         store.PortraitFlags(schoolId, personId);
 
     public PersonCardResponse WithPortraitFlags(int schoolId, PersonCardResponse card)
     {
-        var (hasAvatar, hasFullBody) = Flags(schoolId, card.Id);
+        var (hasAvatar, hasHalfBody, hasFullBody) = Flags(schoolId, card.Id);
-        return card with { HasAvatar = hasAvatar, HasFullBody = hasFullBody };
+        return card with { HasAvatar = hasAvatar, HasHalfBody = hasHalfBody, HasFullBody = hasFullBody };
     }
 
     public async Task<PersonLookupError> EnsurePersonAsync(
@@ -77,7 +77,7 @@ internal sealed class PortraitService(
             var bytes = await swarm.GenerateAsync(positive, negative, settings, kind, cancellationToken);
             store.SavePortrait(schoolId, personId, kind, bytes);
             var flags = Flags(schoolId, personId);
-            return PortraitGenerationResult.Succeeded(kind, flags.HasAvatar, flags.HasFullBody);
+            return PortraitGenerationResult.Succeeded(kind, flags.HasAvatar, flags.HasHalfBody, flags.HasFullBody);
         }
         catch (TaskCanceledException ex) when (!cancellationToken.IsCancellationRequested)
         {
@@ -114,25 +114,26 @@ internal sealed record PortraitGenerationResult(
     PortraitGenerationOutcome Outcome,
     PortraitKind Kind,
     bool HasAvatar,
+    bool HasHalfBody,
     bool HasFullBody)
 {
     public static PortraitGenerationResult UnknownSchool { get; } =
-        new(PortraitGenerationOutcome.UnknownSchool, default, false, false);
+        new(PortraitGenerationOutcome.UnknownSchool, default, false, false, false);
 
     public static PortraitGenerationResult UnknownPerson { get; } =
-        new(PortraitGenerationOutcome.UnknownPerson, default, false, false);
+        new(PortraitGenerationOutcome.UnknownPerson, default, false, false, false);
 
     public static PortraitGenerationResult NotConfigured { get; } =
-        new(PortraitGenerationOutcome.NotConfigured, default, false, false);
+        new(PortraitGenerationOutcome.NotConfigured, default, false, false, false);
 
     public static PortraitGenerationResult Unavailable { get; } =
-        new(PortraitGenerationOutcome.Unavailable, default, false, false);
+        new(PortraitGenerationOutcome.Unavailable, default, false, false, false);
 
     public static PortraitGenerationResult TimedOut { get; } =
-        new(PortraitGenerationOutcome.TimedOut, default, false, false);
+        new(PortraitGenerationOutcome.TimedOut, default, false, false, false);
 
-    public static PortraitGenerationResult Succeeded(PortraitKind kind, bool hasAvatar, bool hasFullBody) =>
+    public static PortraitGenerationResult Succeeded(PortraitKind kind, bool hasAvatar, bool hasHalfBody, bool hasFullBody) =>
-        new(PortraitGenerationOutcome.Succeeded, kind, hasAvatar, hasFullBody);
+        new(PortraitGenerationOutcome.Succeeded, kind, hasAvatar, hasHalfBody, hasFullBody);
 }
 
-internal sealed record PortraitResponse(string Kind, bool HasAvatar, bool HasFullBody);
+internal sealed record PortraitResponse(string Kind, bool HasAvatar, bool HasHalfBody, bool HasFullBody);

src/HSchool.Server/Game/SchoolStore.cs

@@ -271,21 +271,24 @@ internal sealed class SchoolStore
     public bool HasPortrait(int schoolId, string personId, PortraitKind kind) =>
         File.Exists(PortraitPath(schoolId, personId, kind));
 
-    public (bool HasAvatar, bool HasFullBody) PortraitFlags(int schoolId, string personId)
+    public (bool HasAvatar, bool HasHalfBody, bool HasFullBody) PortraitFlags(int schoolId, string personId)
     {
         var directory = PortraitsDirectory(schoolId);
         if (!Directory.Exists(directory))
         {
-            return (false, false);
+            return (false, false, false);
         }
 
-        return (HasPortrait(schoolId, personId, PortraitKind.Avatar), HasPortrait(schoolId, personId, PortraitKind.Full));
+        return (
+            HasPortrait(schoolId, personId, PortraitKind.Avatar),
+            HasPortrait(schoolId, personId, PortraitKind.Half),
+            HasPortrait(schoolId, personId, PortraitKind.Full));
     }
 
     public string PortraitPath(int schoolId, string personId, PortraitKind kind)
     {
         var safeId = SanitizePersonId(personId);
-        var suffix = kind == PortraitKind.Avatar ? "avatar" : "full";
+        var suffix = PortraitKindParser.ToApiValue(kind);
         return Path.Combine(PortraitsDirectory(schoolId), $"{safeId}.{suffix}.png");
     }
 

src/HSchool.Server/Game/SwarmUiClient.cs

@@ -69,7 +69,7 @@ internal sealed class SwarmUiClient
 
         return await RunWithSessionAsync(async () =>
         {
-            var preset = kind == PortraitKind.Avatar ? settings.Avatar : settings.FullBody;
+            var preset = settings.PresetFor(kind);
             var body = new Dictionary<string, object?>
             {
                 ["session_id"] = _sessionId,

src/HSchool.Server/Game/SwarmUiSettings.cs

@@ -25,8 +25,18 @@ internal sealed class SwarmUiSettings
 
     public SwarmUiPreset Avatar { get; init; } = new();
 
+    public SwarmUiPreset HalfBody { get; init; } = new();
+
     public SwarmUiPreset FullBody { get; init; } = new();
 
+    public SwarmUiPreset PresetFor(PortraitKind kind) => kind switch
+    {
+        PortraitKind.Avatar => Avatar,
+        PortraitKind.Half => HalfBody,
+        PortraitKind.Full => FullBody,
+        _ => throw new ArgumentOutOfRangeException(nameof(kind)),
+    };
+
     internal sealed class SwarmUiPreset
     {
         public int Width { get; init; } = 512;

src/HSchool.Server/swarmui.json

@@ -13,6 +13,11 @@
     "height": 1024,
     "positive": "close up, head and shoulders portrait, facing the camera, upper body visible."
   },
+  "halfBody": {
+    "width": 896,
+    "height": 1152,
+    "positive": "waist-up portrait, three-quarter view, facing the camera, outfit visible from waist up, school photo."
+  },
   "fullBody": {
     "width": 896,
     "height": 1152,

tests/HSchool.AppHost.Tests/PortraitApiTests.cs

@@ -107,7 +107,7 @@ public class PortraitApiTests(AppHostFixture fixture)
 
     private sealed record PersonListItem(string Id);
 
-    private sealed record PersonCardResponse(string Id, bool HasAvatar, bool HasFullBody);
+    private sealed record PersonCardResponse(string Id, bool HasAvatar, bool HasHalfBody, bool HasFullBody);
 
     private sealed record SavesDirectoryResponse(string Path);
 }

tests/HSchool.Server.Tests/PortraitPromptBuilderTests.cs

@@ -42,6 +42,22 @@ public class PortraitPromptBuilderTests
         Assert.Contains("Standing full body.", fullPositive, StringComparison.Ordinal);
     }
 
+    [Fact]
+    public void Build_HalfBody_AddsHalfBodyPreset()
+    {
+        var settings = new SwarmUiSettings
+        {
+            Positive = "School photo.",
+            HalfBody = new SwarmUiSettings.SwarmUiPreset { Positive = "Waist-up portrait." },
+            FullBody = new SwarmUiSettings.SwarmUiPreset { Positive = "Standing full body." },
+        };
+
+        var (halfPositive, _) = PortraitPromptBuilder.Build(SampleCard(), settings, PortraitKind.Half);
+
+        Assert.Contains("Waist-up portrait.", halfPositive, StringComparison.Ordinal);
+        Assert.DoesNotContain("Standing full body.", halfPositive, StringComparison.Ordinal);
+    }
+
     private static PersonCardResponse SampleCard() =>
         new(
             "f0.c0",