Hojun-Cho 5f85852faf test: re-point 990/994/#110 off combined.ww-input to sep-feed (M4 E4-keystone, #22) ...

The E3 driver flip makes build_one_sep the sole path; it writes
.sepwork/*.unit.ww, not <stem>.combined.ww, so the flip stops producing
combined.ww. Migrate its consumers to sep-feed first, while both build
paths still exist (reversible; all 5 stage binaries stay byte-identical):

- 990_selfhost: resolveunit drives `ww build --sep` and reads
  <stem>.sepwork/__root.unit.ww; probe_cgen_match gains err.ww (sep
  inlines fmt's .wwi only, so cs==ww holds); probe_ww_links re-expressed
  as `ww_ww build --sep`->run; probe_bootstrap_fixed_point removed (the
  monolith path it tested is deleted by E4 -- the self-application axis
  lives in `make bootstrap`, the cs==ww axis in 995).
- 994_w6c_ww: drop the combined-fed emit_eq + corpus; keep the live
  per-package cs-sep==ww-sep oracle (cmp_sepwork + diff_one + bad[]).
- #110 combined_ww_fresh gate removed (its regen-vs-committed premise
  dies with its producer).

Non-vacuity proven: a one-line emitter mutation reddens 994's per-package
cs!=ww check across 15 packages; revert restores green.

2026-06-18 02:49:09 +09:00

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