adr: add ADR-0043/0044 (eval harnesses); reconcile ADR-0024/0032 for SIP w/h

Document the allreduce + GEMM evaluation harnesses and bring the affected
allreduce ADRs in line with the refactored code.

New (Accepted, EN + KO):
- ADR-0043 — allreduce evaluation harness (tests/sccl/): distributed-driven
  correctness, latency/buffer-kind sweeps, sessionfinish plot aggregators,
  topology + FSIM-comparison figures. Verified against the implementation.
- ADR-0044 — GEMM evaluation harness (scripts/gemm_sweep.py + tests/gemm/):
  heavy-script data gen vs. fast test-rendered figures, slow regenerator,
  the 3-figure set. Records two limitations as open questions: the
  theoretical-model constants are inherited (not yet traced to ADR-0033/
  0014), and the *_measured figure is a naming misnomer.

Updated (EN + KO):
- ADR-0024 — add D5: SIP grid w/h resolution (explicit sips.w/h, square
  fallback, fail-loud), documenting the AhbmCCLBackend fix.
- ADR-0032 — D4/D5/Non-goals reconciled: rectangular SIP grids (e.g. 6 SIPs
  as 3x2) are supported via explicit w/h; the square requirement now
  applies only to the fallback. Affected-files repointed to tests/sccl/.

Verification: ADR-0023 and ADR-0042 confirmed still matching the code (no
change). verify_adr_lang_pairs.py passes (EN/KO Status blocks byte-equal).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/adr-ko/ADR-0024-par-sip-tp-launcher.md

@@ -168,6 +168,36 @@ placement = resolve_dp_policy(
 Post-hoc `pe_index` shifting 없음 — ShardSpec이 `(sip, cube, pe)` 구조적
 좌표를 직접 보유. ShardSpec 상세는 ADR-0026.
 
+### D5. SIP 그리드 크기 — 명시적 `sips.w/h` 해석
+
+2D inter-SIP topology (`torus_2d`, `mesh_2d_no_wrap`)의 SIP 그리드 형태
+(width × height)는 `system.sips.w` / `system.sips.h`에서 해석한다. D1이
+`sips.count`로 `world_size`를 해석하는 것과 같은 방식이다. 우선순위:
+명시적 `w/h` (`w*h == count` 검증) > 정사각 fallback
+(`w/h` 미지정 시에만 `round(sqrt(count))²`) > error.
+
+```python
+sips = spec.get("system", {}).get("sips", {})
+if sip_topo == "ring_1d":
+    w, h = 0, 0                          # 1D sentinel (no grid)
+elif sips.get("w") is not None and sips.get("h") is not None:
+    w, h = int(sips["w"]), int(sips["h"])
+    if w * h != n_sips:
+        raise ValueError(f"sip layout {w}x{h} != sips.count ({n_sips})")
+else:
+    side = int(round(math.sqrt(n_sips)))
+    if side * side != n_sips:
+        raise ValueError("non-square sips.count requires explicit sips.w/h")
+    w, h = side, side
+```
+
+이로써 2D SIP 그리드가 완전 정사각이어야 한다는 기존 가정을 제거한다:
+6-SIP `torus_2d` / `mesh_2d_no_wrap`은 이제 `w: 3, h: 2`(또는 `2x3`)로
+표현 가능하다. 도출된 `(w, h)`는 알고리즘의 inter-SIP exchange로 전달된다
+(ADR-0032 D5에서 소비). 이전 코드 경로는 ring이 아닌 모든 topology에서
+`round(sqrt(count))²`를 조용히 취해 잘못된 그리드(예: 6 SIP에 2×2)를
+만들었다. fail-loud fallback을 갖춘 명시적 `w/h` 경로가 이를 대체한다.
+
 ---
 
 ## Dependencies