feat(web): project health as a traffic light, with its causes

The project dashboard opens with «Salud del proyecto»: good, attention or
at risk, the worst of its signals, each with the cause and the tickets
behind it: stuck work, overdue and blocked tickets, critical or several
high bugs, QA sending back 30 % or more (with enough verdicts), releases
late or at risk by the forecast, columns over their WIP limit. Worked
out in the web from the insights it already reads (projectHealth). The
portfolio shows each project's light too, with its causes on hover.

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

libs/web/tracker/domain/src/index.ts

@@ -3,6 +3,7 @@ export * from './lib/models/models';
 export * from './lib/models/bulk';
 export * from './lib/models/reminders';
 export * from './lib/models/my-day';
+export * from './lib/models/health';
 export * from './lib/models/inputs';
 export * from './lib/models/workflow';
 export * from './lib/ports/gateways';