added base examples and drills

2026-05-20 17:42:01 -06:00
parent 9bf788d9ef
commit 4fc0d851e7
40 changed files with 802 additions and 1 deletions
@@ -0,0 +1,3 @@
+# billing original
+
+Messy invoice finalization logic mixing pricing rules, time, logging, mutation, and file I/O.