feat: guest role for clients and outsiders

A project member can be a GUEST. In a private project a guest only sees
the tickets they take part in (opened, assigned or followed): every other
ticket answers 404, also in my work, realtime changes, blockers and
linked tickets, and project-wide views (activity, statistics, dashboard,
releases, sprints, epics, trash) answer 403. Guests open tickets without
assigning or planning them, and comment, attach, follow and vote on their
own; they change nothing else. In a public project they see what anyone
does. The web gives them only Tablero, Lista and Miembros and loads none
of the project-wide data.

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

libs/api/tracker/application/src/lib/queries/get-trash.query.ts

@@ -23,7 +23,7 @@ export class GetTrashQueryHandler
   ) {}
 
   async execute(query: GetTrashQuery): Promise<IssueReadModel[]> {
-    await this.access.assertCanView(query.projectId, query.viewerId);
+    await this.access.assertSeesWholeProject(query.projectId, query.viewerId);
     return this.findIssues.findTrashed(query.projectId);
   }
 }