feat: 支持教学案例展示功能

packages/server/src/studio/dto/teaching-case.dto.ts

@@ -0,0 +1,31 @@
+import { Transform, Type } from 'class-transformer'
+import { ArrayMaxSize, ArrayMinSize, IsArray, IsBoolean, IsIn, IsInt, IsOptional, IsString, Length, Max, MaxLength, Min, ValidateNested } from 'class-validator'
+const Trim = () => Transform(({ value }: { value: unknown }) => typeof value === 'string' ? value.trim() : value)
+
+export class TeachingCaseFrameDto {
+  @IsIn(['pair', 'composite']) kind!: 'pair' | 'composite'
+  @IsString() @Length(1, 100) beforeId!: string
+  @IsOptional() @IsString() @Length(1, 100) afterId?: string
+  @Trim() @IsString() @MaxLength(100) caption!: string
+}
+export class SaveTeachingCaseDto {
+  @Trim() @IsString() @Length(1, 80) title!: string
+  @Trim() @IsString() @Length(1, 30) displayName!: string
+  @IsInt() @Min(1) @Max(9999) lessonCount!: number
+  @Trim() @IsString() @MaxLength(500) background!: string
+  @Trim() @IsString() @Length(1, 1000) achievement!: string
+  @IsArray() @ArrayMinSize(1) @ArrayMaxSize(9)
+  @ValidateNested({ each: true }) @Type(() => TeachingCaseFrameDto) frames!: TeachingCaseFrameDto[]
+  @IsInt() @Min(0) @Max(9999) sortOrder!: number
+  @IsBoolean() published!: boolean
+  @IsBoolean() consentConfirmed!: boolean
+  @Trim() @IsString() @MaxLength(500) consentNote!: string
+  @IsInt() @Min(0) version!: number
+}
+export class TeachingCaseQueryDto {
+  @IsOptional() @Type(() => Number) @IsInt() @Min(1) @Max(100000) page = 1
+  @IsOptional() @Type(() => Number) @IsInt() @Min(1) @Max(20) limit = 10
+}
+export class TeachingCaseUploadDto {
+  @IsString() @Length(1, 200) fileName!: string
+}