Make collection provenance immutable per shard

Namespace source and configuration snapshots by scenario, motion profile, and shard to prevent later collections from overwriting provenance.

README.md

@@ -39,7 +39,7 @@ the artifact path, SHA-256 digest, collection parameters, and metadata path.
 ```text
 dataset/<task>/<collector>/<version>/<embodiment>_<scenario>_<motion>_shard-NNN_<episodes>.zip
 metadata/<task>/<collector>/<version>/<scenario>_<motion>_shard-NNN.json
-provenance/collections/<task>/<collector>/<version>/
+provenance/collections/<task>/<collector>/<version>/<scenario>/<motion>/shard-NNN/
 catalog.json
 ```
 

metadata/adjust_bottle/online_follow/v1/clean_follow_fast_shard-000.json

@@ -25,19 +25,19 @@
     "internal_root": "aloha-agilex_clean_follow_fast"
   },
   "provenance_files": {
-    "provenance/collections/adjust_bottle/online_follow/v1/collector.py": {
+    "provenance/collections/adjust_bottle/online_follow/v1/clean/follow_fast/shard-000/collector.py": {
       "size_bytes": 66930,
       "sha256": "4a501aeac4ab2643d360fd1ef1815656e969ef9e38049466ec0ac510d52add40"
     },
-    "provenance/collections/adjust_bottle/online_follow/v1/config.yml": {
+    "provenance/collections/adjust_bottle/online_follow/v1/clean/follow_fast/shard-000/config.yml": {
       "size_bytes": 5139,
       "sha256": "70a5f92d88006b27bdc6578df5fd21f6c4dc5a341eb595f1f09b2effc5a7750d"
     },
-    "provenance/collections/adjust_bottle/online_follow/v1/environment.py": {
+    "provenance/collections/adjust_bottle/online_follow/v1/clean/follow_fast/shard-000/environment.py": {
       "size_bytes": 8544,
       "sha256": "bd122764af3f2f3e8b236280983e8949506c5e96b4b9040529812d61ee48f115"
     },
-    "provenance/collections/adjust_bottle/online_follow/v1/instructions.json": {
+    "provenance/collections/adjust_bottle/online_follow/v1/clean/follow_fast/shard-000/instructions.json": {
       "size_bytes": 2890,
       "sha256": "3168108cde17a45c0671bda463a46559c4a3e1b0f914324a28c2999b505cf7eb"
     }