Consider adding motif detection to find structure in noise/non trend or periodic components.

[lukefullard]

https://github.com/ksanjeevan/ts-motif-detection/tree/master

https://github.com/akshey-kumar/motif-learning/tree/main

https://github.com/patrickzib/motiflets

[lukefullard]

chatgpt pdf analysis of purpose (anomaly detection, latent structure)

Residual Components in Time Series.pdf