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/web/tracker/application/src/lib/facades/insights.facade.ts

@@ -0,0 +1,26 @@
+import { inject, Injectable, Provider } from '@angular/core';
+import { injectDispatch } from '@ngrx/signals/events';
+import { insightsPageEvents } from '../events/insights.events';
+import { InsightsStore } from '../stores/insights.store';
+
+/** "Seguimiento": sprint under way, risks, aging and bottlenecks. */
+@Injectable()
+export class InsightsFacade {
+  private readonly store = inject(InsightsStore);
+  private readonly dispatch = injectDispatch(insightsPageEvents);
+
+  readonly insights = this.store.insights;
+  /** False until the first load: show skeletons, not empty states. */
+  readonly loaded = this.store.loaded;
+  readonly error = this.store.error;
+
+  /** Loads the project's reading and keeps it up to date. */
+  open(projectId: string): void {
+    this.dispatch.opened({ projectId });
+  }
+}
+
+/** Store + facade of the dashboard, for its route component. */
+export function provideInsightsFacade(): Provider[] {
+  return [InsightsStore, InsightsFacade];
+}