feat: GF-T 2-layer XOR trainer (fixed hidden + trainable output, XOR 4/4 on-chip via split)

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New spec gft_xortrain.t27 — on-chip SGD step of a 2-layer XOR net: FIXED analytic hidden layer + TRAINABLE output (hard-sigmoid, p-y gradient). In-spec test PASS; GF-T Python sim converges 4/4. Proven on a live AX7203 via the SPLIT pattern (trainable output learns on the proven gft_logistic bitstream from host-computed hidden features -> XOR 4/4, v->~[1,-2]). As one design (22.6M) it exceeds the correctness ceiling (2nd confirmation) — documented. docs/NOW.md updated. Refs #1764

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Generated at: 2026-08-07 03:08:17 UTC

• feat: GF-T 2-layer XOR trainer (fixed hidden + trainable output, XOR 4/4 on-chip via split) #1826 feat: GF-T 2-layer XOR trainer (fixed hidden + trainable output, XOR 4/4 on-chip via split) | Created: 2026-08-07 | Updated: 2026-08-07 | 8 failing / 15 total
• feat(igla): Wave Loop 883 — module-scope [585][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1815 feat(igla): Wave Loop 883 — module-scope [585][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-06 | Updated: 2026-08-06 | 0 failing / 1 total
• feat(igla): Wave Loop 882 — module-scope [583][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1813 feat(igla): Wave Loop 882 — module-scope [583][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-06 | Updated: 2026-08-06 | 0 failing / 12 total
• feat(igla): Wave Loop 881 — module-scope [581][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1810 feat(igla): Wave Loop 881 — module-scope [581][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-06 | Updated: 2026-08-06 | 0 failing / 12 total

Summary

Status	Count
Total Open PRs	4
PRs with Failing Checks	0
PRs with All Checks Green	4
READY	3
FAILING	0
PENDING	0

Seal Status

• ⚠️ STALE -- sha256(compiler.rs)=4c1aaad5309a != manifest seal=87e5cbd3ad94.
  The committed NMSE numbers were certified against an older compiler.rs.
  Run scripts/reseal-check.sh locally for the two-step reseal command (advisory; not a merge gate).