docs/directory.md existed but was orphaned: not in the /docs registry,
not linked anywhere. Now:
- registered as /docs/directory ("Directory & Inventory")
- help icon on the Directory page header links to it (same pattern as
users/groups/profile pages)
- linked from the docs site index feature list
- extended with the shared slug conventions (site_<name>, host_<hostname>),
the automatic registration story (theta-env stack seeding, ldap-client
Linux host enrollment), and the admin + read-only API surface (the
read-only graph routes live at /api/discovery, not /api/directory).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
wmantly