Merge pull request #102 from theta42/docs/jump-host-xref

docs: cross-link the SSH jump host as a directory consumer

docs/directory.md

@@ -87,6 +87,14 @@ The seed is idempotent and non-destructive: a resource whose slug already exists
 
 The `ldap-client` join script enrolls a Debian/Ubuntu machine for LDAP login (SSSD/PAM), LDAP-backed `sudo`, and SSH keys from the directory — and, when given an SSO API token, registers the machine as a `host_<hostname>` resource with its IP, MAC, OS, and kernel, parented to the site named by its configured location.
 
+## Consumers of the directory
+
+The inventory graph isn't just documentation — other components read it to make decisions:
+
+- **[Jump Host](https://theta42.github.io/jump-host/)** — an SSH jump host that resolves which downstream machines a user may reach from their LDAP groups × the directory's `host` resources (`GET /api/discovery/resources?group=<cn>`), then bridges them in. The `host_<hostname>` slugs and `host_<slug>_access` groups this directory creates are exactly what it keys off; a host's `metadata.ip` / `metadata.sshPort` tell it where to connect. So a machine registered here (by theta-env or ldap-client) becomes reachable through the jump host the moment a user is in its access group.
+
+Planned consumers (end-user catalog, firewall/DNS generation) and the model/API gaps they need are tracked in [`directory_spec.md`](https://github.com/theta42/sso-manager-node/blob/master/directory_spec.md) §9.
+
 ## API
 
 All of the above uses the same admin API the UI does (group `app_sso_directory_admin` or `app_sso_admin`):

docs/index.md

@@ -58,7 +58,7 @@ backend, that's the niche.
 - **All-in-one Docker image** — app + OpenLDAP + Redis in one container, or
   run the pieces separately via `app_*` env config.
 - **Geo-Location Scaling** — built-in support for N-Way Multi-Master OpenLDAP [replication](replication.html) across physical sites.
-- **[Directory & Inventory](directory.html)** — map sites, hosts, and services as a graph with rich metadata (IP/MAC, OS/kernel, ports, git repos), auto-provisioned access groups, and automatic registration from theta-env and ldap-client.
+- **[Directory & Inventory](directory.html)** — map sites, hosts, and services as a graph with rich metadata (IP/MAC, OS/kernel, ports, git repos), auto-provisioned access groups, and automatic registration from theta-env and ldap-client. Drives directory-aware tools like the [SSH jump host](https://theta42.github.io/jump-host/).
 
 ## Get it
 
@@ -78,5 +78,7 @@ That's the standalone quick start. For the full set of install options
 
 - **[Proxy](https://theta42.github.io/proxy/)** — an OIDC + LDAP-aware
   reverse proxy, designed to sit in front of this SSO.
+- **[Jump Host](https://theta42.github.io/jump-host/)** — an SSH jump host that
+  uses this SSO's directory to decide who may reach which machine.
 - **[theta-env](https://theta42.github.io/theta-env/)** — runs this SSO
   Manager and the proxy together with one command.