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

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."),