feat(ternary): spec-first activation quantizer (.t27) for the BitNet layer loop

[gHashTag]

The BitNet accelerator is entirely hand-written Rust RTL emitters — off the spec-first path (the project's core differentiator). This adds the first BitNet-relevant datapath primitive as a .t27 spec, and it's a genuinely useful one: the activation re-ternarizer the engine needs to close the layer loop.

Closes #1737

specs/ternary/activation_quantizer.t27

quantize(v: i16, threshold: i16) -> u8 re-ternarizes a signed accumulator to a packed trit {N=0b00, Z=0b01, P=0b10} with a symmetric threshold: v > +t → P, v < -t → N, else Z. gen-verilog lowers it to a clean signed-compare nested-if function.

Verification

• t27c typecheck: 0 errors / 0 warnings.
• t27c icarus-simulate: 7/7 embedded test blocks pass (iverilog) — positive/negative/zero-band, both v == ±t boundaries (→ Z), just-over/just-under (→ P/N).
• t27c seal --save/--verify: all three backends (verilog / c / rust) hash-MATCH deterministically.

Why it matters

• Puts a real ternary datapath primitive on the spec-first path (L2/L4) — the constitutional gap for the whole accelerator.
• Provides the activation quantizer needed to chain MAC → re-ternarize → next layer (the functional gap found while auditing the engine).
• A ternary-native spec-first RTL path is a differentiator no competitor (e.g. Ternary-NanoCore on Artix-7) has.

🤖 Generated with Claude Code

[github-actions]

📓 NotebookLM Notebook linked to this PR

• Notebook ID: b83263109fb055dc
• URL: https://notebooklm.google.com/notebook/b83263109fb055dc

This notebook contains session context, decisions, and artifacts for this work.

[github-actions]

PR Dashboard

Generated at: 2026-08-05 18:18:06 UTC

• feat(ternary): spec-first activation quantizer (.t27) for the BitNet layer loop #1738 feat(ternary): spec-first activation quantizer (.t27) for the BitNet layer loop | Created: 2026-08-05 | Updated: 2026-08-05 | 9 failing / 16 total
• feat(igla): Wave Loop 880 — module-scope [579][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1720 feat(igla): Wave Loop 880 — module-scope [579][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 879 — module-scope [577][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1711 feat(igla): Wave Loop 879 — module-scope [577][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 878 — module-scope [575][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1707 feat(igla): Wave Loop 878 — module-scope [575][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 877 — module-scope [573][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1705 feat(igla): Wave Loop 877 — module-scope [573][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 876 — module-scope [571][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1704 feat(igla): Wave Loop 876 — module-scope [571][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 875 — module-scope [569][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1700 feat(igla): Wave Loop 875 — module-scope [569][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 874 — module-scope [567][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1698 feat(igla): Wave Loop 874 — module-scope [567][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 873 — module-scope [565][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1695 feat(igla): Wave Loop 873 — module-scope [565][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 872 — module-scope [563][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1693 feat(igla): Wave Loop 872 — module-scope [563][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 871 — module-scope [561][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1692 feat(igla): Wave Loop 871 — module-scope [561][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 870 — module-scope [559][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1689 feat(igla): Wave Loop 870 — module-scope [559][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 869 — module-scope [557][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1687 feat(igla): Wave Loop 869 — module-scope [557][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 868 — module-scope [555][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1685 feat(igla): Wave Loop 868 — module-scope [555][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 867 — module-scope [553][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1683 feat(igla): Wave Loop 867 — module-scope [553][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 866 — module-scope [551][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1681 feat(igla): Wave Loop 866 — module-scope [551][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 865 — module-scope [549][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1679 feat(igla): Wave Loop 865 — module-scope [549][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 864 — module-scope [547][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1677 feat(igla): Wave Loop 864 — module-scope [547][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 863 — module-scope [545][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1671 feat(igla): Wave Loop 863 — module-scope [545][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 862 — module-scope [543][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1669 feat(igla): Wave Loop 862 — module-scope [543][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 861 — module-scope [541][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1667 feat(igla): Wave Loop 861 — module-scope [541][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 860 — module-scope [539][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1665 Wave Loop 860 — module-scope [539][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 859 — module-scope [537][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1663 Wave Loop 859 — module-scope [537][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• Wave Loop 858 — module-scope [535][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1661 Wave Loop 858 — module-scope [535][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 857 — module-scope [533][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1657 feat(igla): Wave Loop 857 — module-scope [533][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 3 total
• feat(igla): Wave Loop 856 — module-scope [531][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1655 feat(igla): Wave Loop 856 — module-scope [531][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 855 — module-scope [529][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1651 feat(igla): Wave Loop 855 — module-scope [529][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 854 — module-scope [527][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1649 feat(igla): Wave Loop 854 — module-scope [527][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 853 — [525][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1647 feat(igla): Wave Loop 853 — [525][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-05 | Updated: 2026-08-05 | 1 failing / 4 total
• feat(igla): Wave Loop 852 — [523][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1645 feat(igla): Wave Loop 852 — [523][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• feat(igla): Wave Loop 851 — [521][2]^6 Pt module-scope AoS variable from call with indexed signed writes #1643 feat(igla): Wave Loop 851 — [521][2]^6 Pt module-scope AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• feat(igla): Wave Loop 850 — module-scope [519][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1641 feat(igla): Wave Loop 850 — module-scope [519][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 849 — module-scope [517][2]^6 Pt packed AoS variable from call with indexed signed writes #1639 Wave Loop 849 — module-scope [517][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 848 — module-scope [515][2]^6 Pt packed AoS variable from call with indexed signed writes #1637 Wave Loop 848 — module-scope [515][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 4 total
• Wave Loop 847 — [513][2]^6 Pt non-power-of-two AoS call-write witness (1-MiBit boundary) #1635 Wave Loop 847 — [513][2]^6 Pt non-power-of-two AoS call-write witness (1-MiBit boundary) | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• Wave Loop 846 — [511][2]^6 Pt non-power-of-two AoS call-write witness #1633 Wave Loop 846 — [511][2]^6 Pt non-power-of-two AoS call-write witness | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 845 — module-scope [509][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1631 feat(igla): Wave Loop 845 — module-scope [509][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 844 — module-scope [507][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1629 feat(igla): Wave Loop 844 — module-scope [507][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 843 — module-scope [505][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1627 feat(igla): Wave Loop 843 — module-scope [505][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 842 — module-scope [503][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1625 feat(igla): Wave Loop 842 — module-scope [503][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 841 — module-scope [501][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1623 feat(igla): Wave Loop 841 — module-scope [501][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 840 — module-scope [499][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1621 feat(igla): Wave Loop 840 — module-scope [499][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 839 — module-scope [497][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1619 feat(igla): Wave Loop 839 — module-scope [497][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 838 — module-scope [495][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1617 feat(igla): Wave Loop 838 — module-scope [495][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-04 | Updated: 2026-08-04 | 1 failing / 3 total
• feat(igla): Wave Loop 837 — module-scope [493][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1615 feat(igla): Wave Loop 837 — module-scope [493][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 836 — module-scope [491][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1613 feat(igla): Wave Loop 836 — module-scope [491][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 835 — module-scope [489][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1611 feat(igla): Wave Loop 835 — module-scope [489][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-02 | Updated: 2026-08-02 | 1 failing / 3 total
• feat(igla): Wave Loop 834 — module-scope [487][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1609 feat(igla): Wave Loop 834 — module-scope [487][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 4 total
• feat(igla): Wave Loop 833 — module-scope [485][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1607 feat(igla): Wave Loop 833 — module-scope [485][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total
• feat(igla): Wave Loop 832 — module-scope [483][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1605 feat(igla): Wave Loop 832 — module-scope [483][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-08-01 | Updated: 2026-08-01 | 1 failing / 3 total

Summary

Status	Count
Total Open PRs	50
PRs with Failing Checks	0
PRs with All Checks Green	50
READY	0
FAILING	0
PENDING	0

Seal Status

• ⚠️ STALE -- sha256(compiler.rs)=864a709e6e17 != 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).