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.

.gitattributes

@@ -0,0 +1,15 @@
+# Line endings. Issue #18: on a Windows clone with core.autocrlf=true the
+# served static files came out of the checkout with CRLF, while the test that
+# proves /app.js is PA's single copy read the same file in text mode (which
+# folds CRLF to LF) -- so the bytes the server sent and the bytes the test
+# expected differed on every Windows clone and on no Linux one.
+#
+# Everything text is normalised to LF in the repository (the index already
+# was: `git ls-files --eol` showed 381 i/lf and 21 i/-text the day this was
+# added, so `text=auto` renormalised nothing). The files pa_web / ba_web hand
+# to a browser byte-for-byte are pinned to LF in the WORKING TREE too, so a
+# served asset is the same bytes on every machine.
+* text=auto
+
+tools/pa_web/static/** text eol=lf
+tools/ba_web/static/** text eol=lf