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-015-l1-propagation/pc-fire-counts.txt

@@ -0,0 +1,28 @@
+1825719 pc=0x82611cd8
+1489799 pc=0x824aa330
+ 865494 pc=0x824ab240
+ 865112 pc=0x82456530
+   3334 pc=0x824aa2f0
+   1664 pc=0x8244e218
+    555 pc=0x82334ca0
+     12 pc=0x824aa658
+      4 pc=0x82173dc8
+      4 pc=0x821707c0
+      3 pc=0x82174030
+      2 pc=0x822c6878
+      2 pc=0x82173f48
+      2 pc=0x82173dec
+      2 pc=0x821737f0
+      1 pc=0x82612788
+      1 pc=0x824568d8
+      1 pc=0x82456420
+      1 pc=0x824563e0
+      1 pc=0x823ddb50
+      1 pc=0x822c2a80
+      1 pc=0x82181c28
+      1 pc=0x82173ed0
+      1 pc=0x82173e6c
+      1 pc=0x82173e40
+      1 pc=0x82173dfc
+      1 pc=0x8216f798
+      1 pc=0x8216f088