mirror probes/ so the kept code is self-contained

build_mix: hub-init failure is fatal (not silent), empty merge exits 4; add token-scope probe

Phase 2: source inventory probe + d576/49152 param candidates

add p1_push_bench: Hub upload/download rate at checkpoint sizes

add credential helper + Hub write/bulk-upload roundtrip probe

add p1_secret_verify: mounted-credential end-to-end auth test

p1 bootstrap v2: licenses key required; existence != privacy; stage in /tmp

p1 secret bootstrap: privacy-gated, placeholder-first ordering

add p1 credential-path probe (read-only) + param_count

p0d v4: worker receives its chunk filename; note rayon non-scaling

p0d v3: Tokenizer.no_truncation (v2 crashed on no_truncate)

p0d v2: version-free tree API + subprocess rayon bench (fixes 3 API-skew faults)

p0c: pass attn_implementation via config (transformers 5.0 break)

Phase 0: add ingest-throughput probe p0d

Phase 0: mirror probe scripts + launcher pattern