R39 abort: drop fachsprache from HF (toxic_rate=0.94, see decision-gate-E-1.5-toxic.json). Local copy retained for future reanalysis.

Stage_1.5 R39 human validation report

Stage_1.5 R39 toxic-rate gate decision

R39 rebuild: sanity sample

R39 rebuild: meta.json with excluded_sources

R39 rebuild: drop fachsprache (toxic_rate=0.94), backtrans+v3 holdout only

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initial commit