Add lossless training data

.gitattributes

@@ -66,3 +66,4 @@ recorded/shards/shard-02/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 recorded/shards/shard-03/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 recorded/shards/shard-04/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
 recorded/shards/shard-05/manifest.sqlite filter=lfs diff=lfs merge=lfs -text
+recorded/shards/shard-06/manifest.sqlite filter=lfs diff=lfs merge=lfs -text

recorded/shards/shard-06/COMPLETE.json

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+{
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+  "dataset_schema": "recorded_natural_score_scene_freeze_v1",
+  "kind_counts": {
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+  "scenes": 41,
+  "schema": "packed_blob_shards_v1",
+  "shards": [
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+      "shard": "scenes-00000.blob"
+    }
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+  "status": "staged"
+}

recorded/shards/shard-06/FROZEN.json

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+{
+  "admission_status": "canary_only_pending_final_eval_dedup_ledger",
+  "audit": {
+    "path": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-06/audit_report.json",
+    "sha256": "cf30e35f0d1725eb7db7179490aa3cf494ec1511f3b7e93fb62bcb2ffa9cb452"
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+      "sha256": "f074d9040485c7f6deb6d8ceef2e5f485ec8db27aa75cba14808cef056a48792"
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+    "score_freeze": {
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+      "sha256": "0c52a81b26f8ae8b48e882425f341641f7b85bec1857c810a3f89c1fe3a6fa96"
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+  "final_admission_blocker": "Missing calibrated SCNS+ARP+PDMX source-parent and acoustic near-duplicate ledger.",
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+    "sha256": "eb6a88dde49dc4fea8a13df31a10f53049674c50c67af2ea5fde7efc86a04ef3"
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+  "packed_index": {
+    "path": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-06/manifest.sqlite",
+    "sha256": "4db23aa181385a3525e9701270f019501851f3cda413ad22e6bc27c57e23a73f"
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+  "plan": {
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+    "sha256": "7d7ecc0dc3228e5697f35014ba197f90c9c65f9d9932cd09a4097cfa29b5bbd2"
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+  "schema": "recorded_natural_score_scene_freeze_v1",
+  "seed": 20260908,
+  "source_contract": {
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+    "endpoint_policy": "acoustic_offset_is_tail_energy_q995_within_source_or_score_plus_0.5s_cosine_release_cap; nominal_score_midi_offset_retained_separately",
+    "ensemble_palette": "strict_family_palette: bowed_strings={strings,bass}; winds={reed,pipe}; brass={brass}; guitars={guitar}; piano={piano}",
+    "pitch_policy": "nearest_native_root_within_2_semitones; sampler_style_resampling; uncovered score events are omitted",
+    "required_lane_single_track_fallback": true,
+    "score_piece_split_policy": "deterministic_piece_hash",
+    "score_split": "validation pieces selected first and reserved before train selection",
+    "score_structure": "paired compatible real-score tracks by default; required lanes with candidates but zero structural pairs may use one complete real score track",
+    "source_group_balance": "score-coverage-first least-used physical source group tie-break; optional hard per-group scene cap",
+    "source_split": "shared_source_groups; exact clips unique; external_eval_source_package_disjointness_required",
+    "supplemental_instrument_coverage": "one train scene per declared canonical instrument; priority ceases after coverage",
+    "supplemental_lane_coverage": "one train scene per declared lane; priority ceases after coverage",
+    "supplemental_library_coverage": "one train scene per declared library; priority ceases after coverage",
+    "track_source_binding": "one recorded source group is fixed for every selected score track",
+    "training_score_piece_variants": "at most the declared number of exact-source-group-pair-distinct training scenes per score piece; validation score pieces remain single-use and excluded from training"
+  },
+  "status": "passed"
+}

recorded/shards/shard-06/audit_report.json

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+{
+  "duration_transform": "bounded_sampler_style_root_playback_resample",
+  "endpoint_contract": "acoustic_offsets_are_tail_energy_q995_within_score_plus_cosine_release_caps",
+  "maximum_closure_error": 0.0,
+  "omission_contract": "uncovered_score_events_are_omitted_and_recorded_in_scene_metadata",
+  "scenes": 41,
+  "schema": "scns_real_score_raw_note_audit_v1",
+  "source_group_split_overlap": 6,
+  "status": "passed",
+  "stems": 444,
+  "validation_source_policy": "shared_source_groups_score_piece_disjoint"
+}

recorded/shards/shard-06/manifest.sqlite

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recorded/shards/shard-06/scenes-00000.blob.gz

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recorded/shards/shard-07/COMPLETE.json

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+{
+  "assets": 41,
+  "dataset_schema": "recorded_natural_score_scene_freeze_v1",
+  "kind_counts": {
+    "recorded_natural_score_exact_stems_v1": 41
+  },
+  "payload_bytes": 42050063,
+  "scenes": 41,
+  "schema": "packed_blob_shards_v1",
+  "shards": [
+    {
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+      "shard": "scenes-00000.blob"
+    }
+  ],
+  "status": "staged"
+}

recorded/shards/shard-07/FROZEN.json

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+{
+  "admission_status": "canary_only_pending_final_eval_dedup_ledger",
+  "audit": {
+    "path": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-07/audit_report.json",
+    "sha256": "33fe423f33d73242c8838ffa32a6f0d5a34e58defbb609fb9d182a44e54a94bf"
+  },
+  "bindings": {
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+      "sha256": "7dc526294206f9dc8bf022cc70dd1a39cff8b4c70cc57dea89e1964514728b56"
+    },
+    "preregistration": {
+      "path": "/scratch/gilbreth/chou150/scns_v3/authorities/train_v3_boundroot_full_v3_20260909/code_snapshots/job11711692/preregister_scns_train_v3_boundroot_full_v3_20260909.md",
+      "sha256": "247083119d19b3f0af36379678f5ba0867286e3addaa5c4dbd1f40c5b16937c4"
+    },
+    "recorded_freeze": {
+      "path": "/scratch/gilbreth/chou150/scns_v3/source_lanes/scns_train_v3_isolated_union_20260908/FROZEN.json",
+      "sha256": "f074d9040485c7f6deb6d8ceef2e5f485ec8db27aa75cba14808cef056a48792"
+    },
+    "score_freeze": {
+      "path": "/scratch/gilbreth/chou150/scns_v3/authorities/slakh_score_authority_v1_20260908/FROZEN.json",
+      "sha256": "0c52a81b26f8ae8b48e882425f341641f7b85bec1857c810a3f89c1fe3a6fa96"
+    }
+  },
+  "final_admission_blocker": "Missing calibrated SCNS+ARP+PDMX source-parent and acoustic near-duplicate ledger.",
+  "manifest": {
+    "path": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-07/scenes.jsonl",
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+    "sha256": "ffbe3efbdb6e4369a90b1babed8b7f245f7bf7b94dc13f03fb67c87e6be5f8fa"
+  },
+  "mixture_contract": "load packed float32 [K,L] stems and sum once; mixture is not stored",
+  "output_root": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-07",
+  "packed_index": {
+    "path": "/scratch/gilbreth/chou150/scns_v3/materialization/train_v3_plan11711692_packed_v1/shard-07/manifest.sqlite",
+    "sha256": "2b34d3b18eac9fcedda1bfe73ee4cf324aa2daf4b3074f647fd51a5d8a775403"
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+    "sha256": "f6ae97c857730e6d985f7866a4da39abb3445f2c26ea408b1849048c6fa9ac80"
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+  "source_contract": {
+    "duration_policy": "closest_resampled_native_duration; no looping_or_time_stretching",
+    "endpoint_policy": "acoustic_offset_is_tail_energy_q995_within_source_or_score_plus_0.5s_cosine_release_cap; nominal_score_midi_offset_retained_separately",
+    "ensemble_palette": "strict_family_palette: bowed_strings={strings,bass}; winds={reed,pipe}; brass={brass}; guitars={guitar}; piano={piano}",
+    "pitch_policy": "nearest_native_root_within_2_semitones; sampler_style_resampling; uncovered score events are omitted",
+    "required_lane_single_track_fallback": true,
+    "score_piece_split_policy": "deterministic_piece_hash",
+    "score_split": "validation pieces selected first and reserved before train selection",
+    "score_structure": "paired compatible real-score tracks by default; required lanes with candidates but zero structural pairs may use one complete real score track",
+    "source_group_balance": "score-coverage-first least-used physical source group tie-break; optional hard per-group scene cap",
+    "source_split": "shared_source_groups; exact clips unique; external_eval_source_package_disjointness_required",
+    "supplemental_instrument_coverage": "one train scene per declared canonical instrument; priority ceases after coverage",
+    "supplemental_lane_coverage": "one train scene per declared lane; priority ceases after coverage",
+    "supplemental_library_coverage": "one train scene per declared library; priority ceases after coverage",
+    "track_source_binding": "one recorded source group is fixed for every selected score track",
+    "training_score_piece_variants": "at most the declared number of exact-source-group-pair-distinct training scenes per score piece; validation score pieces remain single-use and excluded from training"
+  },
+  "status": "passed"
+}