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>

apps/web/src/app/app.ts

@@ -45,7 +45,7 @@ import {
         <a
           shellNav
           class="ts-nav-link"
-          routerLink="/cartera"
+          routerLink="/portfolio"
           routerLinkActive="is-active"
         >
           Cartera
@@ -54,7 +54,7 @@ import {
       <a
         shellNav
         class="ts-nav-link"
-        routerLink="/explorar"
+        routerLink="/explore"
         routerLinkActive="is-active"
       >
         Explorar