Improve drawing export and foundation quantity views

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

수량산출/docs/formula-verification.json

@@ -0,0 +1,7 @@
+{
+  "compared": 1214,
+  "differences": 0,
+  "tolerance": "1e-8 relative / absolute",
+  "engines": "TypeScript evaluator vs original Excel cached values",
+  "allSourceFormulasUnmodified": true
+}