docs: run-019 epoch-2 corrected verdict 2.7397 - SOTA gate stays open, teacher-tier phase closed

Author: Ronald Tse

TODO.sota-2026/04-stoicheia-diffusion-wo.md

@@ -89,3 +89,21 @@ Gap to the teacher tier (2.2864): 1.30pp.
 
 **Teacher-tier phase (run-019):** same recipe on the ByT5-LARGE
 encoder — the SOTA-dedicated gate (beat 2.2864) is the target.
+
+**run-019 epoch-2 (final, 2026-10-05):** full-set **Total DER 2.7397
+/ Morph 1.6717** (epoch-1: 3.0078/1.8486). SOTA-dedicated gate (2.2864)
+NOT cleared — +0.45pp — and the per-epoch gain curve (−1.17 small,
+−0.27 here) makes a third epoch unfavorable. Podium: r7 2.2864 >
+plane-large-e2 2.7397 > plane-large 3.0078 > Gemini-Flash 3.1926.
+Teacher-tier phase CLOSED on evidence: the plane architecture's edge is
+the on-device frontier (run-018), not the teacher tier. The conditional
+run-020 full-corpus labeling pass is likewise closed (its trigger was
+"only if epoch-2 falls short" — it did; but its own reading stands:
+unique-data volume is the lever, and the frontier model run-018 already
+holds the efficient tier).
+
+**WO status: ENTERED, executed, closed.** Deliverables shipped:
+haraqat_planes.py (byte-exact split/render), run-017/018/019/020
+verdicts, secryst-py PlaneModel runtime (PR merged), ONNX export path.
+Open packaging: plane v2/large artifact zips + index entries + HF
+publish (after this verdict).

docs/RESULTS.md

@@ -1072,3 +1072,20 @@ loses to raw-text diversity at scale (run-018's 551k unique units →
 supervision source. A full-corpus teacher labeling pass (~15-20h GPU)
 is the conditional distill follow-up, only if the epoch-2 arm falls
 short of the 2.2864 gate.
+
+## run-019 epoch-2 — 2.7397: second epoch closes a third of the gap, SOTA gate still open (2026-10-05)
+
+The epoch-2 extension of plane-large scores full-set **Total DER
+2.7397 / Morph 1.6717 / Total WER 8.6083** — down from 3.0078/1.8486
+at 1 epoch (−0.27pp, −9%). The dedicated podium becomes r7 2.2864,
+plane-large-e2 2.7397, plane-large 3.0078: still ahead of Gemini-Flash
+(3.1926), still behind the teacher (+0.45pp). A third epoch is not
+scheduled — the per-epoch gain (−1.17pp small tier, −0.27pp here) is
+shrinking faster than the 0.45pp gap.
+
+Process note: the first epoch-2 eval was invalid — it resumed from the
+epoch-1 eval progress file, found every window already "saved", and
+re-scored epoch-1 predictions (bit-identical 3.0078). Fixed by a
+per-marker progress file (EVAL_DONE_E2B) and re-run in full; the
+number above is the corrected measurement. The 2026-10-04 epoch-1
+verdict was a fresh eval and is unaffected.