Detect Candlestick Patterns in Python Without TA-Lib

A subdirectory-per-language layout keeps both ports findable in one place. It also moves costs into CI, releases and issue triage, and it has clear limits.

A self-contradicting predicate returns a row in Oracle 19c and 21c. The cause is an optimizer rewrite bug, and there are three ways around it.

Practical habits for working in niche languages where answers, packages and documentation are scarce, and a candid look at when the trade-off is not worth it.