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/page_diffs.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+"""Identify the 7 differing 64KB pages and dump per-page summaries."""
+import struct
+import 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()
+
+PG = 65536
+PC_LO, PC_HI = 0x82000000, 0x82A00000
+V80 = 0x80000000
+
+print("=== differing 64KB pages ===\n")
+for i in range(0, len(canary), PG):
+    if not any(canary[i:i+PG]) and not any(ours[i:i+PG]):
+        continue
+    if canary[i:i+PG] == ours[i:i+PG]:
+        continue
+    page_addr = V80 + i
+    # count differing dwords
+    diffs = 0
+    pc_diffs_canary = 0
+    pc_diffs_ours = 0
+    for j in range(0, PG, 4):
+        cdw = struct.unpack_from(">I", canary, i+j)[0]
+        odw = struct.unpack_from(">I", ours, i+j)[0]
+        if cdw != odw:
+            diffs += 1
+            if PC_LO <= cdw < PC_HI:
+                pc_diffs_canary += 1
+            if PC_LO <= odw < PC_HI:
+                pc_diffs_ours += 1
+    cnz = sum(1 for b in canary[i:i+PG] if b != 0)
+    onz = sum(1 for b in ours[i:i+PG] if b != 0)
+    print(f"page {page_addr:#010x}: {diffs} diff dwords, canary_nz={cnz}, ours_nz={onz}, "
+          f"PCs_in_diffs(canary={pc_diffs_canary}, ours={pc_diffs_ours})")
+
+print("\n=== detailed dump: first 64 differing dwords per page ===")
+for i in range(0, len(canary), PG):
+    if canary[i:i+PG] == ours[i:i+PG]:
+        continue
+    if not any(canary[i:i+PG]) and not any(ours[i:i+PG]):
+        continue
+    page_addr = V80 + i
+    print(f"\n--- page {page_addr:#010x} ---")
+    shown = 0
+    for j in range(0, PG, 4):
+        cdw = struct.unpack_from(">I", canary, i+j)[0]
+        odw = struct.unpack_from(">I", ours, i+j)[0]
+        if cdw != odw:
+            addr = V80 + i + j
+            shown += 1
+            print(f"  +{j:#06x}={addr:#010x}: canary={cdw:#010x}  ours={odw:#010x}")
+            if shown >= 64:
+                # report total remaining
+                remaining = sum(1 for k in range(j+4, PG, 4)
+                                if struct.unpack_from(">I", canary, i+k)[0] !=
+                                   struct.unpack_from(">I", ours, i+k)[0])
+                print(f"  ... and {remaining} more on this page")
+                break