Laporan audit skill

explore-ml-data Laporan audit.

Owns data understanding BEFORE any model is designed. Places and executes `data/eda.py` (a jupytext `# %%` script) via the shared in-process runner, reads the streamed digest, then writes a persisted `data/eda.md` report (plus linked `data/eda_<table>.html` skrub `TableReport` pages) and the `## Data understanding (EDA)` section of `journal/JOURNAL.md`. The point is to surface the dataset facts — shape, dtypes, missingness, cardinality, target balance / skew, datetime / group structure, feature associations — that JUSTIFY the later learner / splitter / metric decisions, so the user understands *why* the modelling choices are made. Uses `skrub.TableReport` for dataframe overviews and the shared runner `audit-ml-pipeline/scripts/run_cells.py`. Stops at "EDA executed, `data/eda.md` + HTML written, JOURNAL EDA section updated." Never designs the model, never edits `src/<pkg>/`, never modifies the user's raw data files. TRIGGER — any of: - `iterate-ml-experiment` § 0 bootstrap, BEFORE the b