trendoscope-algorithms/trendspider ? reverse-engineered prompt

Build me a clean set of custom Trendspider indicators for technical analysis, based on this repo. I want the main ones working properly, RSI, Supertrend, Zigzag, and the harmonic patterns tools, with sensible defaults and clear labels on the chart so it’s easy to use.

Please make sure each indicator is easy to understand, behaves the way a trader would expect, and is organized so I can edit or extend it later. If there are any gaps or old code that needs cleanup, fix them and keep the code consistent across the different indicators.

If anything is unclear from the existing files, look up the current Trendspider docs online and use the right approach. I mainly want a solid working version I can load and use without having to debug a bunch of broken pieces.