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/final-summary.txt

@@ -0,0 +1,66 @@
+# AUDIT-056: Producer-trace at sub_82452DC0
+# Method: --log_lr_on_pc on canary (60s wallclock) vs --lr-trace on ours (-n 500M)
+# canary HEAD 6de80dffe + audit-030 patch; ours HEAD ac2f89a (read-only); XENIA_CACHE_ROOT override
+
+## Level 0: sub_82452DC0 LR distribution
+
+LR              CANARY  OURS  RATIO   FN                       CLASS
+0x82452E64      19      6     3.17x   sub_82452DC0+0xA4        CANARY-OVER (self-recurse)
+0x82460CC8       7      2     3.50x   sub_82460B70+0x158       CANARY-OVER
+0x821CBF7C       7      0     INF     sub_821CBEA8+0xD4        CANARY-ONLY
+0x821C4C98       5      0     INF     sub_821C4AE0+0x1B8       CANARY-ONLY
+0x82448120       4      4     1.00x   sub_824480D0+0x50        PARITY
+0x821CB1D0       2      1     2.00x   sub_821CB030+0x1A0       CANARY-OVER
+0x821790B8       1      1     1.00x   sub_82178F60+0x158       PARITY
+
+TOTAL           45     14     3.21x
+
+## Level 1: parents of CANARY-ONLY callers
+
+sub_821CBEA8 entries: canary 7, ours 0  (CANARY-ONLY)
+  LR distribution in canary: 5x lr=0x821CEEBC (sub_821CEDF8+0xC4), 2x lr=0x821CEDA0 (sub_821CECF0+0xB0)
+
+sub_821C4AE0 entries: canary 1 (lr=0xBCBCBCBC == thread-trampoline poison), ours 0
+  Means: sub_821C4AE0 is a thread entrypoint invoked via sub_824AFF88 trampoline
+  ratio is 1->5 (1 invocation cascades to 5 internal sub_82452DC0 calls via loop)
+
+## Level 2: grandparents
+
+sub_821CEDF8 entries: canary 5 (all from sub_821C4EB0 +0x19C..+0x244 = 5-call cascade), ours 0
+sub_821CECF0 entries: canary 2 (both from sub_821C4988+0x70), ours 0
+sub_82460B70 entries: canary 7, ours 2 (3.5x — different chain)
+
+## Level 3: great-grandparents
+
+sub_821C4EB0 entries: canary 1 (lr=0x82174A80), ours 1 (lr=0x82174A80) -- PARITY!
+sub_821C4988 entries: not directly callable (called from sub_821C4EB0+0x158)
+sub_824AFF88 entries: canary 5 (all lr=0xBCBCBCBC, thread trampoline), ours 0
+
+## DIVERGENCE INTRODUCER
+
+Thread trampoline sub_824AFF88: canary 5 invocations, ours 0
+=> 5 game-spawned threads in canary that are NOT being created in ours.
+
+Thread creation totals (ground truth):
+  canary 30 XThreads (tids 1..0x1E)
+  ours   12 XThreads
+  
+Of the 18 missing ours threads, at least 5 invoke sub_824AFF88 trampoline
+(others go to other entrypoints).
+
+The audit-009 cluster front-end-UI activates sub_821C4EB0 ONCE in both engines
+(parity at level 3). But inside sub_821C4EB0, the 5x cascade to sub_821CEDF8
+fires only in canary. Note: --lr-trace in ours can't probe internal
+basic-block PCs, so we cannot directly verify whether ours's sub_821C4EB0
+runs to completion or returns early.
+
+## Bug class
+
+δ-throughput at thread-creation level. Specifically:
+- 18 game-side threads not being created (12 vs 30 within 60s/500M)
+- The work-submitter sub_82452DC0 throughput ratio (3.21x) matches
+  thread-count ratio (3.0x) within noise => downstream of thread-spawn.
+
+The cascade-divergence inside sub_821C4EB0 may have separate causality
+from the missing threads, or both share an upstream cause (state-machine
+not advancing past front-end-UI activation gate).