release(v2.0.2): rebrand README to Theta Directory, remove standalone-install framing (#185)

Removed "Why this over the alternatives"; fixed stale links to the old
per-repo GitHub Pages site to point at the unified theta-suite docs site;
made explicit this is deployed as part of Theta Suite, not standalone; added
the agent capability/install screenshots to the gallery.

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

nodejs/package.json

@@ -1,6 +1,6 @@
 {
   "name": "t42-theta-directory",
-  "version": "2.0.1",
+  "version": "2.0.2",
   "description": "A very simple LDAP management and SSO system",
   "author": [
     {