# Processing source `build_corpus.py` and `fetch_dump.py` are copies of the reviewed production scripts with their original machine-specific root replaced by `BAYANAT_WIKI_ROOT`; this substitution changes their file hashes. `metadata/source-and-quality.json` records the original production builder hash. The transformation does not otherwise change the script. Paths and operator receipts expected by the builder remain explicit in the code; this is source for inspection and adaptation, not a one-command portable reproduction guarantee. The production runtime was Python 3.14.7, PyArrow 26.0.0, Requests 2.34.2 and mwparserfromhell 0.7.2. Install the parser into `$BAYANAT_WIKI_ROOT/private/vendor` as required by the script, use a clean owned root with the published source topology and receipts, and review the exact lock, disk-floor and restart behavior before executing. Original dump URLs, sizes and hashes are in `../metadata/source-and-quality.json`; the dated source files can disappear, so verify availability and checksums. The code is Apache-2.0; mwparserfromhell is a separately licensed MIT dependency.