fix(codegen): lower Rust +% to wrapping_add (R7)

[gHashTag]

Problem

t27c gen-rust emitted the wrapping-add operator +% literally (a +% b), which is not valid Rust and fails to compile.

Fix

Lower +% → (lhs).wrapping_add(rhs) in Compiler::expr_to_rust. Checked +/* deliberately stay infix — the Zig backend keeps them checked (overflow-panic in debug), and the two backends must agree. Blanket backend-wrapping (as the R7 backlog line suggested) would break that parity; see #1659 for the real hash-mixer story (missing *%/-%/<<% operators).

Verification

• New test test_wrapping_add_op_lowered_rust: +% → wrapping_add, no literal +% leak, plain + NOT wrapped.
• Full compiler suite 1495 passed / 0 failed. (bitnet_pipeline::sequencer_idle_arms_on_start fails identically on pristine master — pre-existing, unrelated.)
• End-to-end: gen-rust output now compiles under rustc --edition 2021.

Constitution

• L2: emitter change, not a gen/ edit.
• L4: regression test added.
• M5: FROZEN_HASH re-sealed (93cc42e3…).

Closes #1658
Relates #1659

🤖 Generated with Claude Code

[github-actions]

PR Dashboard

Generated at: 2026-08-05 08:10:23 UTC

• fix(codegen): lower Rust +% to wrapping_add (R7) #1660 fix(codegen): lower Rust +% to wrapping_add (R7) | Created: 2026-08-05 | Updated: 2026-08-05 | 10 failing / 21 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
• chore(repo): remove stray backup/patch artifacts + close gitignore gap (R2) #1654 chore(repo): remove stray backup/patch artifacts + close gitignore gap (R2) | Created: 2026-08-05 | Updated: 2026-08-05 | 4 failing / 25 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
• feat(igla): Wave Loop 831 — module-scope [481][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1603 feat(igla): Wave Loop 831 — module-scope [481][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 830 — module-scope [479][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1602 feat(igla): Wave Loop 830 — module-scope [479][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 829 — module-scope [477][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1600 feat(igla): Wave Loop 829 — module-scope [477][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 828 — module-scope [475][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1598 feat(igla): Wave Loop 828 — module-scope [475][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
• Wave Loop 827: module-scope [473][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1596 Wave Loop 827: module-scope [473][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
• Wave Loop 826: module-scope [471][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1594 Wave Loop 826: module-scope [471][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 825 — module-scope [469][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1591 feat(igla): Wave Loop 825 — module-scope [469][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 824 — module-scope [467][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1588 feat(igla): Wave Loop 824 — module-scope [467][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 823 — module-scope [465][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1586 feat(igla): Wave Loop 823 — module-scope [465][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-31 | Updated: 2026-07-31 | 1 failing / 4 total
• feat(igla): Wave Loop 822 — module-scope [463][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1572 feat(igla): Wave Loop 822 — module-scope [463][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-30 | Updated: 2026-07-30 | 1 failing / 3 total
• feat(igla): Wave Loop 821 — module-scope [461][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1571 feat(igla): Wave Loop 821 — module-scope [461][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-30 | Updated: 2026-07-30 | 1 failing / 3 total
• feat(igla): Wave Loop 820 — module-scope [459][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1569 feat(igla): Wave Loop 820 — module-scope [459][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-30 | Updated: 2026-07-30 | 1 failing / 3 total
• feat(igla): Wave Loop 819 — module-scope [457][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1567 feat(igla): Wave Loop 819 — module-scope [457][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-30 | Updated: 2026-07-30 | 1 failing / 3 total
• feat(igla): Wave Loop 818 — module-scope [455][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1566 feat(igla): Wave Loop 818 — module-scope [455][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-30 | Updated: 2026-07-30 | 1 failing / 3 total
• feat(igla): Wave Loop 817 — module-scope [453][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1563 feat(igla): Wave Loop 817 — module-scope [453][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-29 | Updated: 2026-07-29 | 1 failing / 3 total
• feat(igla): Wave Loop 816 — module-scope [451][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1560 feat(igla): Wave Loop 816 — module-scope [451][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-29 | Updated: 2026-07-29 | 1 failing / 3 total
• feat(igla): Wave Loop 815 — module-scope [449][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1557 feat(igla): Wave Loop 815 — module-scope [449][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-29 | Updated: 2026-07-29 | 5 failing / 25 total
• feat(igla): Wave Loop 814 — module-scope [447][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1556 feat(igla): Wave Loop 814 — module-scope [447][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-29 | Updated: 2026-07-29 | 5 failing / 25 total
• feat(igla): Wave Loop 813 — module-scope [445][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1555 feat(igla): Wave Loop 813 — module-scope [445][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-28 | Updated: 2026-07-28 | 7 failing / 25 total
• feat(igla): Wave Loop 812 — module-scope [443][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes #1554 feat(igla): Wave Loop 812 — module-scope [443][2]^6 Pt non-power-of-two outer-dimension array-of-struct variable from call with indexed signed writes | Created: 2026-07-28 | Updated: 2026-07-28 | 7 failing / 26 total
• feat(igla): Wave Loop 811 — module-scope [441][2]^6 Pt packed AoS variable from call with indexed signed writes #1552 feat(igla): Wave Loop 811 — module-scope [441][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-07-28 | Updated: 2026-07-28 | 6 failing / 26 total
• feat(igla): Wave Loop 810 — module-scope [439][2]^6 Pt packed AoS variable from call with indexed signed writes #1550 feat(igla): Wave Loop 810 — module-scope [439][2]^6 Pt packed AoS variable from call with indexed signed writes | Created: 2026-07-27 | Updated: 2026-07-27 | 6 failing / 26 total

Summary

Status	Count
Total Open PRs	50
PRs with Failing Checks	7
PRs with All Checks Green	43
READY	0
FAILING	7
PENDING	0

Seal Status

• ⚠️ STALE -- sha256(compiler.rs)=93cc42e3597c != 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).

[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.

[gHashTag]

Superseded by #1674, which folds in this exact +%→wrapping_add change and adds the rest of the family (-%/*% across lexer, parser, and the Rust/Verilog/C backends). Closing in favor of the complete version.