feat: sprints with burndown and carry-over

Plan sprints with dates and a goal, run one at a time per project, and
put tickets in them from the ticket page. The Sprints tab follows the one
under way with its progress and a burndown in tickets or points against
the ideal line. Closing a sprint sends what was left to the next one or
back to the backlog; the board can be filtered by sprint.

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

libs/api/tracker/presenters/src/lib/graphql/inputs.ts

@@ -181,6 +181,41 @@ export class ChangeIssueStatusInput {
   reason?: string | null;
 }
 
+const DAY = /^\d{4}-\d{2}-\d{2}$/;
+
+@InputType()
+export class CreateSprintInput {
+  @Field(() => ID) @IsUUID() projectId!: string;
+  @Field() @IsString() @MinLength(1) @MaxLength(80) name!: string;
+  @Field(() => String, { nullable: true })
+  @IsOptional()
+  @IsString()
+  @MaxLength(500)
+  goal?: string | null;
+  @Field({ description: 'YYYY-MM-DD' }) @Matches(DAY) startDate!: string;
+  @Field({ description: 'YYYY-MM-DD, included' })
+  @Matches(DAY)
+  endDate!: string;
+}
+
+@InputType()
+export class UpdateSprintInput {
+  @Field(() => ID) @IsUUID() sprintId!: string;
+  @Field({ nullable: true })
+  @IsOptional()
+  @IsString()
+  @MinLength(1)
+  @MaxLength(80)
+  name?: string;
+  @Field(() => String, { nullable: true })
+  @IsOptional()
+  @IsString()
+  @MaxLength(500)
+  goal?: string | null;
+  @Field({ nullable: true }) @IsOptional() @Matches(DAY) startDate?: string;
+  @Field({ nullable: true }) @IsOptional() @Matches(DAY) endDate?: string;
+}
+
 @InputType()
 export class SavedFilterCriteriaInput {
   @Field(() => [String], { nullable: true })
@@ -320,6 +355,14 @@ export class IssueFilterInput {
   @IsOptional()
   @IsUUID()
   parentId?: string;
+  @Field(() => ID, { nullable: true })
+  @IsOptional()
+  @IsUUID()
+  sprintId?: string;
+  @Field({ nullable: true, description: 'Only tickets in no sprint' })
+  @IsOptional()
+  @IsBoolean()
+  noSprint?: boolean;
   @Field(() => IssueSort, { nullable: true, defaultValue: IssueSort.RECENT })
   @IsOptional()
   @IsEnum(IssueSort)