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/http/projects.controller.ts

@@ -35,6 +35,7 @@ import {
   ActivityQueryDto,
   AddMemberDto,
   AnalyticsQueryDto,
+  InsightsQueryDto,
   BoardQueryDto,
   ChangeMemberRoleDto,
   CreateProjectDto,
@@ -257,10 +258,12 @@ export class ProjectsController {
   async insights(
     @CurrentUser() me: User | undefined,
     @Param('project') project: string,
+    @Query() query: InsightsQueryDto,
   ) {
     return this.projects.insights(
       viewerOf(me),
       await this.refs.projectId(viewerOf(me), project),
+      query.since ? new Date(query.since) : null,
     );
   }