Document catalog host moves and add per-module host-deps installer.

zapier-docs-master now has CATALOG-HOST.md (relative PDFs / rewrite-docs-host.py)
and HOST-DEPS.md. verae-bootstrap/scripts/host-deps.sh checks and installs
git, Node, native build tools, and nats-server on Debian or Alpine from
host-deps.tsv (every Forgejo module). fetch.sh runs it before clone/npm.

packages/overview/10-docs-sync.md

@@ -20,7 +20,15 @@ Validated against the module list in `packages/` and Forgejo repos.
 
 - `verae-staff-iam`, `verae-staff-session`, `verae-staff-ui`
 - `verae-keep`
-- `verae-bootstrap` (clone + npm per server type)
+- `verae-bootstrap` (clone + npm per server type; `scripts/host-deps.sh` installs OS/Node/NATS)
+
+## Move the catalog to another hostname
+
+HTML and PDF catalog links are **path-relative**. Rsync `site/` to a new document root (for example `docs.verae-time.net`) without rewriting files.
+
+- Procedure: [CATALOG-HOST.md](https://git.georgelambert.org/marchon/zapier-docs-master/src/branch/main/CATALOG-HOST.md) in **zapier-docs-master**
+- Optional absolute retarget: `python3 scripts/rewrite-docs-host.py --site ./site --from https://zapier.georgelambert.org --to https://docs.verae-time.net`
+- Host packages for a new box: `bash packages/verae-bootstrap/scripts/host-deps.sh --type ns1-all-in-one`
 
 ## Still blocked (not closable here)