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-056-producer-trace/lr-distribution.csv

@@ -0,0 +1,8 @@
+lr,canary_fires,ours_fires,ratio,class,fn
+0x82452E64,19,6,3.17x,CANARY-OVER,sub_82452DC0+0xA4
+0x821CBF7C,7,0,INF,CANARY-ONLY,sub_821CBEA8+0xD4
+0x82460CC8,7,2,3.50x,CANARY-OVER,sub_82460B70+0x158
+0x821C4C98,5,0,INF,CANARY-ONLY,sub_821C4AE0+0x1B8
+0x82448120,4,4,1.00x,PARITY,sub_824480D0+0x50
+0x821CB1D0,2,1,2.00x,CANARY-OVER,sub_821CB030+0x1A0
+0x821790B8,1,1,1.00x,PARITY,sub_82178F60+0x158