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/03_start_an_app/index.html

@@ -693,7 +693,7 @@ machine-facing checklist lives in the reference page
    the families and their input formats (or "none").</li>
 <li><strong>Auth needed now?</strong> Default <strong>no</strong>. Auth is deferred (<code>py-jwt</code> primitives
    only), and an authless app is just a spec with no <code>security</code> keys — see
-   <a href="../../lib/04_spec_first_routing/#authless-apps">Spec-First Routing → Authless apps</a>.</li>
+   <a href="../../lib/20_spec_first_routing/#authless-apps">Spec-First Routing → Authless apps</a>.</li>
 <li><strong>Integrations.</strong> Mongo, ingestion formats, email, LLM provider.</li>
 </ol>
 <p>If you can state axes 1 and 2, the rest is mechanical.</p>
@@ -721,8 +721,8 @@ machine-facing checklist lives in the reference page
 <h2 id="reference">📚 Reference</h2>
 <ul>
 <li><a href="../../lib/01_build_recipe/">Build Recipe</a> — the deterministic checklist</li>
-<li><a href="../../lib/12_genericity_matrix/">Genericity Matrix</a> — Tier A / B / C</li>
-<li><a href="../../lib/13_library_registry/">Library Registry</a> — the Tier A catalog</li>
+<li><a href="../../lib/92_genericity_matrix/">Genericity Matrix</a> — Tier A / B / C</li>
+<li><a href="../../lib/93_library_registry/">Library Registry</a> — the Tier A catalog</li>
 <li><a href="../02_components/">App Components</a> — the component model</li>
 </ul>
 <hr />