Universal loca app+wiki skill draft

Draft managed skill name: loca-app-wiki-hosting.

Procedure skeleton

1. Pick a short project root under /home/loca/<name>.
2. Reserve high loopback app and wiki ports after checking hosting-loca-zone.md.
3. Bind app services to 127.0.0.1:<port> only.
4. Put public TLS/basic-auth routing in Nginx.
5. Build a Quartz docs mirror in /home/loca/dev/udytor/q5vault-<name>.
6. Serve the static wiki with a systemd user service.
7. Verify local loopback, public route, auth gate, and static index.html.
8. Keep private setup notes and distill only secret-free reusable lessons.