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/diff-b.txt

@@ -0,0 +1,13 @@
+# B-list: 12 entries — ours has 0x82xxxxxx PC, canary differs
+addr=0x82000870  canary=0x30006000  ours=0x82000000
+addr=0x82870948  canary=0xf800001c  ours=0x8287093c
+addr=0x82870958  canary=0xf8000014  ours=0x8287094c
+addr=0x828a3228  canary=0x58454e00  ours=0x828a3228
+addr=0x828a322c  canary=0xf8000084  ours=0x828a3228
+addr=0x828a323c  canary=0xf8000070  ours=0x828a3230
+addr=0x828a324c  canary=0x58454e00  ours=0x828a324c
+addr=0x828a3250  canary=0xf8000080  ours=0x828a324c
+addr=0x828a3260  canary=0xf800007c  ours=0x828a3254
+addr=0x828f48b0  canary=0x00000000  ours=0x828f4070
+addr=0x828f48c4  canary=0x00000000  ours=0x828f3850
+addr=0x828f48f0  canary=0x00000000  ours=0x828f3e08