chore: track audit-runs summary artifacts (md/csv/diff/txt/json/etc)

Snapshot of every non-log artifact under audit-runs/ from audits 003
through 058: findings.md per audit, comparison CSVs, probe diffs,
schema docs, register-dump txts, lr-trace JSONL streams, the saved
canary patch diffs, etc. ~284 files / ~52 MB total.

Excluded (per .gitignore): probe stdout/stderr/log streams (the raw
firehose), guest-memory dumps under audit-026/027/029 (4.5 GB of
.bin files; *.bin pattern added to .gitignore this commit).

Also adds the orphan audit-058-sub825070F0-activation directory that
a subagent accidentally created at project-root instead of
under xenia-rs/audit-runs/; relocated to its proper home.

Purpose: cross-machine continuity. With these summaries committed,
a fresh clone gives the next session the full per-audit context
(findings + tables + cascade predictions) without dependence on
local-only working tree.

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

audit-runs/audit-026-mem-diff/peek_anchors.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""Side-by-side dword dump at named anchor addresses for both canary and ours."""
+import struct, os
+here = os.path.dirname(os.path.abspath(__file__))
+canary = open(os.path.join(here, "canary-v80.bin"), "rb").read()
+ours   = open(os.path.join(here, "ours-v80.bin"), "rb").read()
+V80 = 0x80000000
+
+def dump(addr, n=16, label=""):
+    off = addr - V80
+    print(f"=== {addr:#010x} {label} ===")
+    for j in range(n):
+        a = addr + j*4
+        c = struct.unpack_from(">I", canary, off + j*4)[0]
+        o = struct.unpack_from(">I", ours,   off + j*4)[0]
+        mark = "  " if c == o else "DIFF"
+        print(f"  {a:#010x} canary={c:#010x}  ours={o:#010x}  {mark}")
+    print()
+
+for a, n, lbl in [
+    (0x828F4070, 32, "0x15e4 worker singleton"),
+    (0x828F4838, 32, "audit-023 listener struct"),
+    (0x828F3D08, 16, "0x100c dispatcher"),
+    (0x828F3EC0, 16, "0x1004 dispatcher"),
+    (0x828F48B0, 24, "audit-024A singleton-pool start"),
+    (0x828A3230, 16, "audio buffer-completion semaphore"),
+    (0x828A3254, 12, "audit-025 audio wait target"),
+    (0x82006CF4, 8,  "audit-025 audio_system vtable"),
+    (0x828A6900, 24, "0x828a0000 page diff cluster"),
+]:
+    dump(a, n, lbl)