feat: renumber lib reference into 4-pillar anatomy

Renumber the 15 reference docs into pillar groups (recipe -> anatomy):
- 01 Build Recipe (entry), 02 Composition Root
- domains: 10 Layering Rules
- contract: 20 Spec-First Routing, 21 CRUD Template, 22 Auth Integration
- interfaces/infra: 30 Infra Adapters
- UI: 40 UI: Auto-Rendered Admin & Custom Pages (new; @aetoskia packages,
  client template, x- catalog via react-openapi MCP module)
- pipelines: 50 Pipeline Scaffold, 51 Worker & Progress, 52 Human-in-the-Loop
- delivery/meta: 90 Drone Pipelines, 91 Versioning & Changelog,
  92 Genericity Matrix, 93 Library Registry, 94 Repository Inventory

MCP module names are unchanged (NN_ prefix stripped); all cross-references
(wiki, templates, hooks, registry) updated; lib index rewritten pillar-first;
build recipe bootstraps the client template. Bundle + HTML sites regenerated.

standards/wiki/05_mcp_setup/index.html

@@ -738,7 +738,7 @@ portal runs each one as a FastMCP <strong>streamable-http</strong> app bound to
 <p>Connect your agent to the <strong><code>standards</code></strong> server first: it answers
 <code>find_library</code>, <code>list_repos</code>, and the <code>start_app</code> prompt, so the agent reaches
 for an internal library instead of reimplementing one (see the
-<a href="../../lib/13_library_registry/">Library Registry</a>).</p>
+<a href="../../lib/93_library_registry/">Library Registry</a>).</p>
 <hr />
 <h2 id="run-the-servers-locally">▶️ Run the servers locally</h2>
 <p>From the <code>docs</code> checkout:</p>
@@ -1328,7 +1328,7 @@ Client Configuration → Copy HTTP Stream Config</strong>.</p>
 <hr />
 <h2 id="reference">📚 Reference</h2>
 <ul>
-<li><a href="../../lib/13_library_registry/">Library Registry</a> — the catalog each server
+<li><a href="../../lib/93_library_registry/">Library Registry</a> — the catalog each server
   mirrors, and where <code>find_library</code> resolves</li>
 <li><a href="../03_start_an_app/">Start an App</a> — connect <code>standards</code>, then invoke
   <code>start_app</code></li>
@@ -1337,7 +1337,7 @@ Client Configuration → Copy HTTP Stream Config</strong>.</p>
 <hr />
 <h2 id="related">Related</h2>
 <ul>
-<li><a href="../03_start_an_app/">Start an App</a> · <a href="../04_development/01_testing/">Testing &amp; Quality</a> · <a href="../../lib/13_library_registry/">Library Registry</a></li>
+<li><a href="../03_start_an_app/">Start an App</a> · <a href="../04_development/01_testing/">Testing &amp; Quality</a> · <a href="../../lib/93_library_registry/">Library Registry</a></li>
 </ul>