chore(teams): regenerate the OpenAPI spec and the route manifests

`npm run swagger` + `npm run routes:manifest` for the one added route,
`GET /api/v1/public/teams/:slug/activity`, and for `optionalAuth` joining
`/teams/:slug/members`.

The guards manifest names `optionalAuth` on both, which is the point of that
file: a reviewer can see that two public routes now read the caller's identity
without reading the routers.

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

server/routes.manifest.json

@@ -705,6 +705,10 @@
       "method": "GET",
       "path": "/api/v1/public/teams/:slug"
     },
+    {
+      "method": "GET",
+      "path": "/api/v1/public/teams/:slug/activity"
+    },
     {
       "method": "GET",
       "path": "/api/v1/public/teams/:slug/members"