WillTools 2026-09-09 -- clean snapshot of the development repo for review

History-free snapshot of the private development repository at cbe45c5
(2026-09-09). Code, docs and public catalogue only; no plant or job
knowledge layers, no client or job names (tools/scrub.py clean). The
intro deck is left out of this snapshot because its slide images could
not be checked for job drawings.

tools/ba_web/static/index.html

@@ -0,0 +1,20 @@
+<meta charset="utf-8">
+<title>Beam Analysis</title>
+<link rel="stylesheet" href="willtools.css">
+<div class="app-shell">
+  <div class="toolbar">
+    <div class="toolbar-title">Beam Analysis<span id="pa-mark" class="pa-mark"></span></div>
+    <div class="toolbar-spacer"></div>
+    <button id="btn-run" class="btn btn-primary">Run</button>
+    <button id="btn-close" class="btn">Close</button>
+  </div>
+  <div id="banner" class="banner" hidden></div>
+  <div id="spec-problems" class="spec-problems" hidden></div>
+  <div class="tabs" id="tabs"></div>
+  <div class="pages" id="pages"></div>
+</div>
+<pre id="errors" hidden></pre>
+<script src="units.js"></script>
+<script src="draw.js"></script>
+<script src="ba_drawings.js"></script>
+<script src="app.js"></script>