nx_bright_prep_gate.nx

nx_bright_prep_gate.nx -- GATE for nx_bright_prep (BRIGHT reshaped into the BEIR layout), driven IN-PROCESS through bp_run on the pinned pony fixtures (search.refs brightds26) into a /tmp tree: the receipt must reproduce the card (112 queries, 2219 qrels, 112 excluded pairs, 7894 corpus rows, 0 orphans, 2317793 corpus bytes), the files must carry the shapes nx_beir_eval reads (queries.tsv row 0 is id 0 TAB the known query prefix; qrels/test.tsv opens with the BEIR header then a score-1 row for the known first gold id; excluded.tsv row 0 is 0 TAB N/A), the licence must sit beside the bytes and name cc-by-4.0, and two runs must be byte-identical. Neg-controls: a missing examples file refuses at examples-open; the documents file offered as the examples file refuses at examples-columns (it has no query, gold_ids or excluded_ids); a missing documents file refuses at documents-open. SKIPs when the fixtures are absent, never acquits. Expected byte strings are BUILT at run time from named pieces and byte constants (a tab or newline spelled as an escape inside a literal is a lexer contract this gate does not depend on). license_tier: ORIGINAL No hw writes (Rule 26).