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>

apps/api/e2e/tracker.e2e-spec.ts

@@ -1366,4 +1366,53 @@ describe('task-stream (e2e)', () => {
     );
     expect(automations).toEqual([{ name: 'Etiquetar', active: false }]);
   });
+
+  it('reads the dashboard: sprint under way, risks, aging and bottlenecks', async () => {
+    const key = 'D' + Date.now().toString(36).slice(-5).toUpperCase();
+    await rest('token-ana', 'POST', '/projects', { key, name: key });
+    await eventually(
+      () => rest('token-ana', 'GET', `/projects/${key}`),
+      (r) => r.status === 200,
+    );
+    const late = (
+      await rest('token-ana', 'POST', `/projects/${key}/issues`, {
+        type: 'TASK',
+        title: 'Late',
+        dueDate: '2020-01-01',
+      })
+    ).body['key'];
+    const waits = (
+      await rest('token-ana', 'POST', `/projects/${key}/issues`, {
+        type: 'TASK',
+        title: 'Waits',
+      })
+    ).body['key'];
+    await eventually(
+      () => rest('token-ana', 'GET', `/issues/${waits}`),
+      (r) => r.status === 200,
+    );
+    await rest('token-ana', 'POST', `/issues/${late}/links`, {
+      type: 'BLOCKS',
+      targetIssue: waits,
+    });
+    const insights = await eventually(
+      () => rest('token-ana', 'GET', `/projects/${key}/insights`),
+      (r) => r.status === 200 && r.body['risks'].blockedCount === 1,
+    );
+    expect(insights.body['sprint']).toBeNull();
+    expect(insights.body['risks'].overdue[0]).toMatchObject({
+      key: late,
+      dueDate: '2020-01-01',
+    });
+    expect(insights.body['risks'].blocked[0].key).toBe(waits);
+    expect(
+      insights.body['bottlenecks'].map((b: { status: string }) => b.status),
+    ).toContain('IN_PROGRESS');
+    const { project } = await gql(
+      'token-ana',
+      `query($k: String!) { project(idOrKey: $k) { insights { risks { overdueCount } aging { thresholdDays } } } }`,
+      { k: key },
+    );
+    expect(project.insights.risks.overdueCount).toBe(1);
+  });
 });