feat: dashboard forecasts releases, tells what changed and weighs the load

The insights reading grows (GraphQL insights(since:), REST ?since=, MCP):
- planned releases with a likely (p50) and safe (p85) finish date from a
  Monte Carlo over the last six weeks of finished work, one after another,
  and a verdict against their target;
- with `since` (the viewer's last visit, kept in the browser): tickets
  created, finished and sent back from QA, and their mentions;
- each person's open points against what they closed per sprint lately;
- open tickets without estimate, area or assignee, or untouched for 90
  days, each count opening the list filtered (new noEstimate, noArea and
  updatedBefore filters).

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

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

@@ -568,6 +568,21 @@ export class IssueFilterInput {
   @IsOptional()
   @Matches(/^\d{4}-\d{2}-\d{2}$/)
   dueTo?: string;
+  @Field({ nullable: true, description: 'Only tickets nobody estimated' })
+  @IsOptional()
+  @IsBoolean()
+  noEstimate?: boolean;
+  @Field({ nullable: true, description: 'Only tickets with no area' })
+  @IsOptional()
+  @IsBoolean()
+  noArea?: boolean;
+  @Field({
+    nullable: true,
+    description: 'Only tickets not updated since this instant (ISO)',
+  })
+  @IsOptional()
+  @IsISO8601()
+  updatedBefore?: string;
   @Field(() => [CustomFieldValueInput], {
     nullable: true,
     description: 'Only tickets holding these custom values',