deploy webservice static-file routing for docsite folder URLs, per-instance step-cache db, and constant-height panel title bars.

App/wwwroot/HiAPI-docsite/app-anatomy/util/index.html

@@ -92,6 +92,7 @@
 <ul>
 <li><a href="file-explorer.html">File Explorer</a> — server-side filesystem browser with named roots (Admin / Project / Resource), in-page text editor with CodeMirror 6 syntax highlighting, zip pack / extract, and rename / copy / delete.</li>
 <li><a href="../mech/mech-builder-page.html">Mechanism Builder</a> — generic mechanism XML editor. Documented under <code>mech/</code> because its model lives there; reachable from <code>Util → Mechanism Builder</code>.</li>
+<li><a href="../controller/index.html">Legacy-Controller</a> — the Controller Page, superseded by the Player's Control Tree but still reachable from <code>Util → Legacy-Controller</code> (below a separator) while it carries settings the tree has no editor for.</li>
 </ul>
 <h2 id="pending">Pending</h2>
 <ul>