Add neural-moonshine SNN zkperf witness

Golay G24 SNN encode→corrupt→decode on erdfa shard (QmTEST123, 192 bytes)
cycles: 3,704,617,053 | instructions: 6,943,710,253 | IPC: 1.87
cache-misses: 12,134,579 | branch-misses: 24,728,284
Binary: python3-3.13.12-env (brian2 SNN)
Source: neural-moonshine test_shard_pipeline.py

data/neural-moonshine-snn/binary_hash.txt

@@ -0,0 +1 @@
+b62e17653c7f9b57b7888b94e7eeaf5bce5bd3538002daff47f17cad1d984799  /nix/store/c8npzffa0karfgmd75gjmjy3qdd6j0ms-python3-3.13.12-env/bin/python3

data/neural-moonshine-snn/commitment

@@ -0,0 +1 @@
+c9936337d9a1c67027ad25cba636459e5e137e49d1488f2bb16e32266cbc6c98

data/neural-moonshine-snn/perf.txt

@@ -0,0 +1,16 @@
+# started on Sun Mar 22 16:32:47 2026
+
+
+ Performance counter stats for '/nix/store/c8npzffa0karfgmd75gjmjy3qdd6j0ms-python3-3.13.12-env/bin/python3 test_shard_pipeline.py':
+
+        3704617053      cycles                                                                  (99.74%)
+        6943710253      instructions                                                            (99.74%)
+          12134579      cache-misses                                                            (99.74%)
+          24728284      branch-misses                                                           (99.74%)
+
+       2.743905566 seconds time elapsed
+
+       0.747141000 seconds user
+       0.093592000 seconds sys
+
+

data/neural-moonshine-snn/stdout.txt

@@ -0,0 +1,8 @@
+mkdir -p failed for path /homeless-shelter/.config/matplotlib: [Errno 13] Permission denied: '/homeless-shelter'
+Matplotlib created a temporary cache directory at /build/matplotlib-2w7hbden because there was an issue with the default path (/homeless-shelter/.config/matplotlib); it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
+ERROR      Brian 2 encountered an unexpected error. If you think this is a bug in Brian 2, please report this issue either to the discourse forum at <http://brian.discourse.group/>, or to the issue tracker at <https://github.com/brian-team/brian2/issues>. Please include this file with debug information in your report: /build/brian_debug_psonkcb6.log  Additionally, you can also include a copy of the script that was run, available at: /build/brian_script_bswet8w1.py Thanks! [brian2]
+Traceback (most recent call last):
+  File "/nix/store/4b61b8iwq3fcfgb4fy6vakkhgf6z2p59-source/test_shard_pipeline.py", line 52, in <module>
+    entries = sorted(os.listdir(SHARD_DIR))
+                     ~~~~~~~~~~^^^^^^^^^^^
+FileNotFoundError: [Errno 2] No such file or directory: '/var/www/solana.solfunmeme.com/erdfa/blocks'

data/neural-moonshine-snn/witness.json

@@ -0,0 +1,7 @@
+{
+  "binary": "/nix/store/c8npzffa0karfgmd75gjmjy3qdd6j0ms-python3-3.13.12-env",
+  "source": "/nix/store/4b61b8iwq3fcfgb4fy6vakkhgf6z2p59-source",
+  "perf": "# started on Sun Mar 22 16:32:47 2026||| Performance counter stats for '/nix/store/c8npzffa0karfgmd75gjmjy3qdd6j0ms-python3-3.13.12-env/bin/python3 test_shard_pipeline.py':||        3704617053      cycles                                                                  (99.74%)|        6943710253      instructions                                                            (99.74%)|          12134579      cache-misses                                                            (99.74%)|          24728284      branch-misses                                                           (99.74%)||       2.743905566 seconds time elapsed||       0.747141000 seconds user|       0.093592000 seconds sys|||",
+  "binary_hash": "b62e17653c7f9b57b7888b94e7eeaf5bce5bd3538002daff47f17cad1d984799",
+  "timestamp": "2026-03-22T16:32:50+00:00"
+}