feat(web): English paths, and a portfolio that updates itself

/cartera, /explorar and /p/:key/proponer are /portfolio, /explore and
/p/:key/propose now, like every other path; the Spanish ones redirect,
so links already shared keep working. Settings sections go by
?section= with English names.

The portfolio reads itself again, quietly, when a ticket, sprint or
release of the projects shown changes, when my projects change, or when
the live connection comes back; «En directo» replaces the refresh
button.

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

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

@@ -169,7 +169,7 @@ export class GetShowcaseQueryHandler
       })),
       proposals: {
         open: project.acceptsProposals,
-        path: project.acceptsProposals ? `/p/${project.key}/proponer` : null,
+        path: project.acceptsProposals ? `/p/${project.key}/propose` : null,
         top: [...proposals.items]
           .sort((a, b) => b.votes - a.votes)
           .slice(0, 10)