Fix pipeline data leakage, merge fan-out, and repo hygiene - #1

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skylarliu1 wants to merge 3 commits into

hkbuttar:mainfrom

skylarliu1:fix/pipeline-leakage

Commits on Aug 28, 2026

Add .gitignore + requirements.txt, stop tracking Data/ and .DS_Store

skylarliu1
and
claude
committed
29daab0
Unsupervised: fit clustering/LDA on train partition only, dedupe merge keys

skylarliu1
and
claude
committed
2f167ed
Supervised: take train/test from the frozen split, remove leaked features

skylarliu1
and
claude
committed
4184043