feat: dashboard reads the sprint, the risks, aging and bottlenecks

A new projectInsights reading (GraphQL Project.insights, REST
/projects/{project}/insights, MCP get_project_insights), computed by pure
functions over the read model and the timeline:
- the sprint under way: days left, points done, pace against what is
  needed and whether it gets there;
- tickets at risk: overdue, due within a week, blocked by an open ticket
  and stuck (7 days or more in an in-progress or QA status);
- aging of the work under way against the p85 cycle time;
- average days in each in-progress and QA status, with WIP limits.
The dashboard shows them in four new panels, reloaded on every change.

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

libs/api/tracker/presenters/src/lib/http/projects.controller.ts

@@ -47,6 +47,7 @@ import {
   BoardColumnDto,
   CommandResultDto,
   ProjectAnalyticsDto,
+  ProjectInsightsDto,
   ProjectDto,
   ProjectStatsDto,
 } from './dto/responses.dto';
@@ -243,6 +244,26 @@ export class ProjectsController {
     );
   }
 
+  @Get(':project/insights')
+  @ApiOptionalPireonAuth()
+  @PROJECT
+  @ApiOperation({
+    summary: 'The dashboard',
+    description:
+      'Sprint under way (pace against time), overdue, due-soon, blocked and stuck tickets, aging of the work under way against the p85 cycle time, and average days in each in-progress and QA status.',
+  })
+  @ApiOkResponse({ type: ProjectInsightsDto })
+  @ApiReadErrors()
+  async insights(
+    @CurrentUser() me: User | undefined,
+    @Param('project') project: string,
+  ) {
+    return this.projects.insights(
+      viewerOf(me),
+      await this.refs.projectId(viewerOf(me), project),
+    );
+  }
+
   @Get(':project/activity')
   @ApiOptionalPireonAuth()
   @PROJECT