ADR housekeeping: category prefixes, lifecycle folders, retroactive 0034-0037

Filename + lifecycle:
- ADR rename to ADR-NNNN-<cat>-title.md with 8 3-letter category prefixes
  (dev / mem / lat / prog / algo / par / api / ver). Numbers stay immutable.
- ADR Lifecycle split into 3 folders, documented in CLAUDE.md Part 2:
  docs/adr/ (Accepted), docs/adr-proposed/ (Proposed/Stub/Draft),
  docs/adr-history/ (Superseded/Merged). Status field gains "Draft" for
  retroactive docs pending verification.

Merges (one ADR per topic, no change-history annotations):
- ADR-0017 absorbs ADR-0019 (Cube NOC + per-PE HBM connectivity, 10 D-items)
- ADR-0014 absorbs ADR-0021 (PE pipeline execution model, 8 D-items incl.
  TileToken self-routing and multi-op composite epilogue scope)
- ADR-0023 absorbs docs/ipcq-dma-codesign-hw.md as new "HW Realization
  Notes (Informative)" section (D16-D23 + Open HW Questions). codesign-hw.md
  deleted; ADR-0019/0021 moved to adr-history with one-line stub status

Retroactive documentation (G4 closures, code-verified):
- ADR-0037 forwarding component (TransitComponent: first-flit overhead,
  serial worker, path-based routing, single impl/multiple names)
- ADR-0036 IO_CPU component (target_start_ns global barrier stamping,
  per-cube fan-out, response aggregation)
- ADR-0035 M_CPU & M_CPU.DMA component (3 fan-out paths, DMA Resources,
  target_start_ns passthrough)
- ADR-0034 HBM controller internal design (per-PC state, address-based
  selection, flit-aware per-flit commit, async finalize, command-only
  fallback path)

Content updates:
- ADR-0010 expanded to full CLI surface (run/probe/web), retitled
  "Command Line Interface and Execution Semantics"
- ADR-0007 D2 rewritten to current state; ADR-0015 supersession notes pruned
- ADR-0005 wrapped in Decision header with D1-D5; ADR-0022 metadata
  block replaced with standard Status header
- ADR-0024 trimmed to rank=SIP launcher essentials (D1-D4);
  ADR-0027 cleaned of supersession history
- ADR-0033 D6 cleanup: address-based PC selection moved out of future-work
  (now documented in ADR-0034 D3); related D1/D3 wording realigned
- Cross-references back-filled in 5 ADRs (G3 gaps closed)

Onboarding docs split:
- docs/onboarding/ created
- moved: hw-architecture-overview.md, latency-model.md, di-presentation.md,
  ccl-author-guide{,.en}.md
- references updated in README, ADR-0023{,.en}, src/kernbench/ccl/__init__.py

Source / test / yaml: ADR-NNNN cross-references in docstrings and YAML
comments updated after the merges (ADR-0021->0014 D6, ADR-0019->0017 D8).
No behavior change.

Tooling:
- tools/verify_adr_lang_pairs.py + tests/test_verify_adr_lang_pairs.py
  (ADR EN/KO pair invariant checker)
- .claude/commands/report.md tracked (/report slash command)
- .gitignore: allow .claude/commands/*.md while keeping settings files ignored

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

tests/test_verify_adr_lang_pairs.py

@@ -0,0 +1,107 @@
+"""Tests for tools/verify_adr_lang_pairs.py."""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+_REPO_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(_REPO_ROOT / "tools"))
+
+import verify_adr_lang_pairs as v  # noqa: E402
+
+
+def _make_adr(
+    path: Path,
+    title_id: str,
+    title_text: str = "Some Title",
+    status: str = "Accepted",
+) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(
+        f"# ADR-{title_id}: {title_text}\n\n"
+        f"## Status\n\n{status}\n\n"
+        f"## Context\n\nbody\n",
+        encoding="utf-8",
+    )
+
+
+def test_complete_pairs_pass(tmp_path: Path) -> None:
+    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", "Foo EN")
+    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", "Foo KO")
+    assert v.verify(tmp_path) == []
+
+
+def test_empty_dirs_pass(tmp_path: Path) -> None:
+    assert v.verify(tmp_path) == []
+
+
+def test_missing_ko_fails(tmp_path: Path) -> None:
+    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001")
+    errs = v.verify(tmp_path)
+    assert any("missing KO" in e and "ADR-0001-foo-bar.md" in e for e in errs)
+
+
+def test_orphan_ko_fails(tmp_path: Path) -> None:
+    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001")
+    errs = v.verify(tmp_path)
+    assert any("orphan KO" in e and "ADR-0001-foo-bar.md" in e for e in errs)
+
+
+def test_status_mismatch_fails(tmp_path: Path) -> None:
+    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", status="Accepted")
+    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", status="Proposed")
+    errs = v.verify(tmp_path)
+    assert any("Status block mismatch" in e for e in errs)
+
+
+def test_title_id_mismatch_fails(tmp_path: Path) -> None:
+    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0002")
+    _make_adr(tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001")
+    errs = v.verify(tmp_path)
+    assert any("EN title ADR-ID" in e for e in errs)
+
+
+def test_multiline_status_with_parenthetical_passes(tmp_path: Path) -> None:
+    """Real ADRs like ADR-0001 have multi-line Status with revision notes."""
+    multiline_status = (
+        "Accepted (Revision 2 - 2026-04-27: concrete bit layout,\n"
+        "Supersedes ADR-0031.)"
+    )
+    _make_adr(
+        tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001", status=multiline_status
+    )
+    _make_adr(
+        tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md", "0001", status=multiline_status
+    )
+    assert v.verify(tmp_path) == []
+
+
+def test_crlf_normalization(tmp_path: Path) -> None:
+    """KO has CRLF, EN has LF; Status content is otherwise identical -> pass."""
+    en = tmp_path / "docs/adr/ADR-0001-foo-bar.md"
+    ko = tmp_path / "docs/adr-ko/ADR-0001-foo-bar.md"
+    en.parent.mkdir(parents=True, exist_ok=True)
+    ko.parent.mkdir(parents=True, exist_ok=True)
+    en.write_bytes(
+        b"# ADR-0001: Foo\n\n## Status\n\nAccepted\n\n## Context\n\nbody\n"
+    )
+    ko.write_bytes(
+        b"# ADR-0001: Foo\r\n\r\n## Status\r\n\r\nAccepted\r\n\r\n## Context\r\n\r\nbody\r\n"
+    )
+    assert v.verify(tmp_path) == []
+
+
+def test_underscore_in_slug_recognized(tmp_path: Path) -> None:
+    """ADR-0013 uses an underscore in its slug; the regex must accept it."""
+    _make_adr(tmp_path / "docs/adr/ADR-0013-ver-verification_strategy.md", "0013")
+    _make_adr(tmp_path / "docs/adr-ko/ADR-0013-ver-verification_strategy.md", "0013")
+    assert v.verify(tmp_path) == []
+
+
+def test_main_exit_codes(tmp_path: Path, capsys) -> None:
+    assert v.main(["--root", str(tmp_path)]) == 0
+    _make_adr(tmp_path / "docs/adr/ADR-0001-foo-bar.md", "0001")
+    assert v.main(["--root", str(tmp_path)]) == 1
+    out = capsys.readouterr().out
+    assert "FAILED" in out