feat: saved board views and richer board filters

The board now filters by text, type, priority and unassigned tickets as
well. Any combination can be saved as a named view, private or shared with
the project, and opened again with one click.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/api/tracker/presenters/src/lib/http/dto/responses.dto.ts

@@ -191,6 +191,41 @@ export class IssueDto {
   @ApiProperty() version!: number;
 }
 
+export class SavedFilterCriteriaResponseDto {
+  @ApiPropertyOptional({ type: [String] }) types?: string[];
+  @ApiPropertyOptional({ type: [String] }) areas?: string[];
+  @ApiPropertyOptional({
+    enum: IssuePriority,
+    enumName: 'IssuePriority',
+    isArray: true,
+  })
+  priorities?: IssuePriority[];
+  @ApiPropertyOptional({ type: String, nullable: true })
+  assigneeId?: string | null;
+  @ApiPropertyOptional() unassigned?: boolean;
+  @ApiPropertyOptional({ type: String, nullable: true, format: 'uuid' })
+  releaseId?: string | null;
+  @ApiPropertyOptional({ type: [String] }) labels?: string[];
+  @ApiPropertyOptional({ type: String, nullable: true })
+  search?: string | null;
+}
+
+export class SavedFilterDto {
+  @ApiProperty({ format: 'uuid' }) id!: string;
+  @ApiProperty({ format: 'uuid' }) projectId!: string;
+  @ApiProperty({ type: UserRefDto }) owner!: UserRefDto;
+  @ApiProperty({ example: 'Bugs críticos de frontend' }) name!: string;
+  @ApiProperty({ description: 'Visible to the whole project' })
+  shared!: boolean;
+  @ApiProperty({ type: SavedFilterCriteriaResponseDto })
+  criteria!: SavedFilterCriteriaResponseDto;
+  @ApiProperty({ format: 'date-time' }) createdAt!: string;
+}
+
+export class SavedFilterIdDto {
+  @ApiProperty({ format: 'uuid' }) id!: string;
+}
+
 export class IssuePageDto {
   @ApiProperty({ type: [IssueDto] }) items!: IssueDto[];
   @ApiProperty({ description: 'Total matches (for pagination)' })