Authorize M12 provenance epoch 2 baseline

2026-08-27 22:06:43 +08:00
parent c2c65d3a09
commit c9684a544b
16 changed files with 813 additions and 177 deletions
--- a/tests/golden/WBV2-P8-003/m12-provenance-epoch.json
+++ b/tests/golden/WBV2-P8-003/m12-provenance-epoch.json
@@ -1,20 +1,25 @@
 {
  "schemaVersion": 1,
-  "epoch": 1,
+  "epoch": 2,
  "task": "WBV2-P8-003",
  "operation": "M12_AUTHORIZED_PROVENANCE_REBASELINE",
  "historicalEvidencePreserved": true,
  "sourceSnapshot": "tests/golden/corrective/rehydration/M12-git-history-snapshot/snapshot-manifest.json",
  "sourceSnapshotSha256": "e58b1804ed92f19855679f7cdca6787bffcfafbc59c007fd419077ed55a04b54",
+  "supplementalExactRecovery": "tests/golden/corrective/rehydration/M12-supplemental-exact-recovery.json",
+  "supplementalExactRecoverySha256": "a8947b6b5966dbd870a254a96e7ee26d606011c16cb5c5c3c315ac912eae0908",
+  "searchReport": "tests/golden/WBV2-P8-003/m12-source-recovery-search.json",
+  "searchReportSha256": "4192418563aabf011bb5d6c1407565c87bb492ab208eca69f4768ae35b126fc0",
  "originalDriftReport": "tests/golden/corrective/rehydration/M12-manifest-sha-drift.json",
  "originalDriftReportSha256": "e35f4dcae87ce260d565dccfcdafb58a032d79141115a26b45b25dcbec3f31e1",
  "originalIntake": "tests/golden/corrective/rehydration/M12-provenance-intake.json",
  "originalIntakeSha256": "37a54d83eba799948fcaae798828915b35f8bf8e709bf90df21351d0288676d9",
  "policy": {
-    "restoredOriginals": 22,
-    "authorizedReplacements": 62,
+    "restoredOriginals": 23,
+    "authorizedReplacements": 61,
    "replacementsAreNotHistoricalRestorations": true,
-    "historicalManifestsRewritten": false
+    "historicalManifestsRewritten": false,
+    "fullHistoricalReproduction": false
  },
  "entries": [
    {
@@ -25,7 +30,7 @@
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      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "f6d949a56d6b3c9bf58bbb3b94eb3c16e497cdd515da11bf45d9ef0b86c638b2",
      "replacement": true,
@@ -40,7 +45,7 @@
      "observedSha256": "e1c28687ce34cda539fce096060ab972a98e509c3cdd8335745d565546bcd030",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "97d025812d51642e6c118a7a6228b0481e5ff95e4acb7742f62875f9f27f924b",
      "replacement": true,
@@ -55,7 +60,7 @@
      "observedSha256": "f6d949a56d6b3c9bf58bbb3b94eb3c16e497cdd515da11bf45d9ef0b86c638b2",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
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+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "f6d949a56d6b3c9bf58bbb3b94eb3c16e497cdd515da11bf45d9ef0b86c638b2",
      "replacement": true,
@@ -70,7 +75,7 @@
      "observedSha256": "2510df2927fbe34ac3c81e4192a9c3ef842388af56dce77d9717681aeda6becd",
      "provenanceState": "PROVENANCE_RESTORED",
      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/asset-preview-opfs-commit.test.mjs",
-      "epoch": 1,
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "f489a1d9a4c5fb24a99bce6d31841534c7cf3981b53076a0d9e19d106e9d0d74",
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@@ -83,7 +88,7 @@
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/asset-preview-dedup.test.mjs",
-      "epoch": 1,
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "e023fdd33e0f40c1331dfdd73cd287dc684256b9d134971ab17db8cfe2a83835",
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@@ -96,7 +101,7 @@
      "observedSha256": "217fc2c8b55b9a8bc8ce0e23268cf3062f989853d72f71f999278f2ad8e61b4c",
      "provenanceState": "PROVENANCE_RESTORED",
      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/asset-preview-quarantine.test.mjs",
-      "epoch": 1,
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "79c836c7a3be4e9f305a962775444c766577cca87fa6d1698811e75eb21f2d9a",
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@@ -109,7 +114,7 @@
      "observedSha256": "cd1f790dffb2b31780cb7f9cfe10e433b335ed282018b2fae5d8fadb687fd5c0",
      "provenanceState": "PROVENANCE_RESTORED",
      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/asset-preview-reference-gc.test.mjs",
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "c5de3122b5d8aab17daf0179cb4f5bb0b5d299408818849cbe7b18e40a47706e",
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@@ -122,7 +127,7 @@
      "observedSha256": "fa908f0a9049287cc67c32fcfb5ed006495fe998f214f602cb0a5116f6856134",
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/asset-preview-display.test.mjs",
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "f10a05900c4d1282251f7a76e7c413a18602910f55fe8400f1713f548eba3873",
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@@ -135,7 +140,7 @@
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/library-operation-identity.test.mjs",
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
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@@ -148,7 +153,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
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      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
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@@ -163,7 +168,7 @@
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/library-linked-mutation.test.mjs",
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@@ -176,7 +181,7 @@
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@@ -191,7 +196,7 @@
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/library-linked-reload.test.mjs",
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
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@@ -204,7 +209,7 @@
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@@ -219,7 +224,7 @@
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      "provenanceState": "PROVENANCE_RESTORED",
      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/library-linked-missing.test.mjs",
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      "binding": "IMMUTABLE_SOURCE_SNAPSHOT",
      "sourceSha256": "4ab6d6ff4845b4ca963399e7eea214ceb412871dc1fdef5bac1ed0333596da4f",
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@@ -232,7 +237,7 @@
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@@ -247,7 +252,7 @@
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@@ -262,7 +267,7 @@
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@@ -277,7 +282,7 @@
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@@ -292,7 +297,7 @@
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      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/tests/unit/library-override-writer.test.mjs",
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@@ -305,7 +310,7 @@
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@@ -320,7 +325,7 @@
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@@ -335,7 +340,7 @@
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@@ -348,7 +353,7 @@
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@@ -363,7 +368,7 @@
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@@ -378,7 +383,7 @@
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@@ -391,7 +396,7 @@
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@@ -406,7 +411,7 @@
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@@ -421,7 +426,7 @@
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@@ -436,7 +441,7 @@
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@@ -451,7 +456,7 @@
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@@ -464,7 +469,7 @@
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@@ -479,7 +484,7 @@
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@@ -494,7 +499,7 @@
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@@ -522,7 +527,7 @@
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      "replacement": true,
@@ -1106,7 +1111,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1121,7 +1126,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1136,7 +1141,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1151,7 +1156,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1166,7 +1171,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1181,7 +1186,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1196,7 +1201,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1211,7 +1216,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
@@ -1226,7 +1231,7 @@
      "observedSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "provenanceState": "AUTHORIZED_REBASELINE",
      "snapshotPath": null,
-      "epoch": 1,
+      "epoch": 2,
      "binding": "CURRENT_WORKTREE_REPLACEMENT",
      "sourceSha256": "40b7f14d4f568ae94bedde83e02115c127e0c714e5eb32a6a97b1e1084c4fa68",
      "replacement": true,
--- a/tests/golden/WBV2-P8-003/m12-source-recovery-search.json
+++ b/tests/golden/WBV2-P8-003/m12-source-recovery-search.json
@@ -0,0 +1,47 @@
+{
+  "schemaVersion": 1,
+  "operation": "M12_SOURCE_RECOVERY_SEARCH",
+  "policy": "exact_sha256_only",
+  "sources": [
+    {
+      "kind": "CURRENT_GIT_OBJECT_DATABASE",
+      "scope": "all reachable and unreachable objects",
+      "blobsScanned": 25050,
+      "targetShaMatches": 2,
+      "newExactRestorations": 0
+    },
+    {
+      "kind": "TRASH_PROJECT_COPY",
+      "scope": "workinf_Blender_Wasm.3 including its Git object database",
+      "refs": ["main", "origin/main"],
+      "targetShaMatches": 0,
+      "newExactRestorations": 0
+    },
+    {
+      "kind": "LOCAL_RELEASE_SOURCE_ARCHIVE",
+      "path": "release/blender-web-corresponding-source.tar.gz",
+      "sha256": "1a57a8c53e68ffca50e730f280c68636553d7a6ea1c4bce3b45823b4677c294c",
+      "targetShaMatches": 1,
+      "newExactRestorations": 1,
+      "entries": ["M12-06F:protocol:web/protocol/glb-import.ts"]
+    },
+    {
+      "kind": "GITEA_REPOSITORY",
+      "repository": "https://gitea.meswork.com/wangdequan/workinf_Blender_Wasm.git",
+      "branches": ["main:c2c65d3a090fd06ca36a41107974a91398e00a3c"],
+      "tags": [],
+      "releases": [],
+      "actionsArtifacts": "AUTH_REQUIRED_NO_ARTIFACTS_OBSERVED",
+      "targetShaMatches": 0,
+      "newExactRestorations": 0
+    }
+  ],
+  "summary": {
+    "historicalEntries": 84,
+    "restoredBeforeSupplement": 22,
+    "supplementalExactRestorations": 1,
+    "authorizedReplacementsAfterEpoch2": 61,
+    "unresolvedHistoricalEntries": 61
+  },
+  "conclusion": "No additional exact historical bytes were found. Epoch 2 must remain an authorized rebaseline and must not be described as full historical reproduction."
+}
--- a/tests/golden/WBV2-P8-003/manifest.json
+++ b/tests/golden/WBV2-P8-003/manifest.json
@@ -23,21 +23,33 @@
      "path": "tests/golden/corrective/rehydration/M12-git-history-snapshot/snapshot-manifest.json",
      "sha256": "e58b1804ed92f19855679f7cdca6787bffcfafbc59c007fd419077ed55a04b54"
    },
+    "supplemental": {
+      "path": "tests/golden/corrective/rehydration/M12-supplemental-exact-recovery.json",
+      "sha256": "a8947b6b5966dbd870a254a96e7ee26d606011c16cb5c5c3c315ac912eae0908"
+    },
+    "supplementalSnapshot": {
+      "path": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/protocol/glb-import.ts.m12-06F",
+      "sha256": "0b6329c08e6f3cd9af6f27ef7c463b037a7cab94192afb4538d3d6c4cfcbc147"
+    },
+    "searchReport": {
+      "path": "tests/golden/WBV2-P8-003/m12-source-recovery-search.json",
+      "sha256": "4192418563aabf011bb5d6c1407565c87bb492ab208eca69f4768ae35b126fc0"
+    },
    "epoch": {
      "path": "tests/golden/WBV2-P8-003/m12-provenance-epoch.json",
-      "sha256": "772c25f1375f46b1649b1431d3e47f4ab532641157ff7a47c9f65a2e2ee67679"
+      "sha256": "a71f145c1d29ca5fec5964213ab2921ab1cf1757099bcc2a3e1d4efedd2b0d61"
    },
    "report": {
      "path": "tests/golden/WBV2-P8-003/provenance-epoch-report.json",
-      "sha256": "053cca1f52a1cc22cd0b8d1e69ec6fa4ec00b2b0584d8f76010d905d9dbde868"
+      "sha256": "9be983254265538913ac3ba837ab95cdb79c0986d0cdc266db52a6fd1ecb50a5"
    },
    "generator": {
      "path": "tools/web/generate-m12-provenance-epoch.mjs",
-      "sha256": "d3658713cdd5479a3ad7001c89cc6799c9c31216fac0a808e2775da0e3cf4de5"
+      "sha256": "60d5956a5e305308d87c7a91d6f74ee458c07ff579cb8770911871e7ad1149dd"
    },
    "status": {
      "path": "docs/status/WBV2-P8-003.md",
-      "sha256": "b86c1d304a411468be8700c59fafad209f301e6391f3ab30f63f7b480edde4d3"
+      "sha256": "5c4eb342ed226199380b55079da38a6505b37488e3bdc4e331a4a2c30506b8a7"
    },
    "recoveryPlan": {
      "path": "tests/golden/WBV2-P8-003/recovery-task-plan.json",
@@ -45,15 +57,16 @@
    },
    "taskContext": {
      "path": "tests/golden/WBV2-P8-003/task-context.json",
-      "sha256": "d1b03187a671f0cae6e9dd19303612d3ebd8d3510abb7dd9b5f177d0c4f85f77"
+      "sha256": "a64585c181ade592e3532d5d4886d2ac234f8db7770128778e851f82c87b118e"
    }
  },
  "assertions": {
    "total": 84,
-    "restoredOriginals": 22,
-    "authorizedReplacements": 62,
+    "restoredOriginals": 23,
+    "authorizedReplacements": 61,
    "falseRestoredClaims": 0,
-    "historicalManifestsRewritten": false
+    "historicalManifestsRewritten": false,
+    "fullHistoricalReproduction": false
  },
  "nextTask": "WBV2-P8-004"
 }
--- a/tests/golden/WBV2-P8-003/provenance-epoch-report.json
+++ b/tests/golden/WBV2-P8-003/provenance-epoch-report.json
@@ -3,12 +3,12 @@
  "task": "WBV2-P8-003",
  "operation": "AUTHORIZE_M12_PROVENANCE_EPOCH",
  "status": "PASS",
-  "epoch": 1,
+  "epoch": 2,
  "counts": {
    "total": 84,
-    "restoredOriginals": 22,
-    "authorizedReplacements": 62,
-    "unresolvedHistoricalOriginals": 62
+    "restoredOriginals": 23,
+    "authorizedReplacements": 61,
+    "unresolvedHistoricalOriginals": 61
  },
  "sourceSnapshot": {
    "path": "tests/golden/corrective/rehydration/M12-git-history-snapshot/snapshot-manifest.json",
@@ -19,7 +19,8 @@
    "historicalEvidencePreserved": true,
    "falseRestoredClaims": 0,
    "historicalManifestsRewritten": false,
-    "allCurrentBindingsHashVerified": false
+    "fullHistoricalReproduction": false,
+    "allCurrentBindingsHashVerified": true
  },
  "nextTask": "WBV2-P8-004"
 }
--- a/tests/golden/WBV2-P8-003/task-context.json
+++ b/tests/golden/WBV2-P8-003/task-context.json
@@ -40,7 +40,7 @@
      },
      {
        "path": "tools/web/generate-m12-provenance-epoch.mjs",
-        "bytes": 8884,
+        "bytes": 10709,
        "reason": "EVIDENCE_BYTE_BUDGET"
      },
      {
--- a/tests/golden/WBV2-P8-004/manifest.json
+++ b/tests/golden/WBV2-P8-004/manifest.json
@@ -9,7 +9,7 @@
  "artifacts": {
    "parentManifest": {
      "path": "tests/golden/WBV2-P8-003/manifest.json",
-      "sha256": "a2f240de899de0ca858263937344b030a64c939df6daf8df06ada176eb859471"
+      "sha256": "9be94c2a037bacea694e4e4121b9ff774b6f53c177873c7c47781711170f5d68"
    },
    "receipts": {
      "path": "tests/golden/WBV2-P8-002/atomic-receipt-index.json",
@@ -17,7 +17,15 @@
    },
    "provenanceEpoch": {
      "path": "tests/golden/WBV2-P8-003/m12-provenance-epoch.json",
-      "sha256": "772c25f1375f46b1649b1431d3e47f4ab532641157ff7a47c9f65a2e2ee67679"
+      "sha256": "a71f145c1d29ca5fec5964213ab2921ab1cf1757099bcc2a3e1d4efedd2b0d61"
+    },
+    "approval": {
+      "path": "docs/status/M12-PROVENANCE-EPOCH-2-APPROVAL.json",
+      "sha256": "cffc869734af94ffe6b8b8004d7ab8cc2c9edcb85ec2a877548e0b0f923f5ea3"
+    },
+    "searchReport": {
+      "path": "tests/golden/WBV2-P8-003/m12-source-recovery-search.json",
+      "sha256": "4192418563aabf011bb5d6c1407565c87bb492ab208eca69f4768ae35b126fc0"
    },
    "previousGate": {
      "path": "tests/golden/WBV2-P7-003/release-gate-report.json",
@@ -25,19 +33,19 @@
    },
    "generator": {
      "path": "tools/web/generate-m12-provenance-epoch.mjs",
-      "sha256": "d3658713cdd5479a3ad7001c89cc6799c9c31216fac0a808e2775da0e3cf4de5"
+      "sha256": "60d5956a5e305308d87c7a91d6f74ee458c07ff579cb8770911871e7ad1149dd"
    },
    "checker": {
      "path": "tools/web/check-wbv2-recovery-release-gate.mjs",
-      "sha256": "4af9c128fd5658621ae5dcf41b90e2a9964b8a1c32fe982a3d539ab4639324b7"
+      "sha256": "c500dd7fb8d581b2e8292da6f4b6afcd487acdf453ca55ec48dab9e7dc553b27"
    },
    "report": {
      "path": "tests/golden/WBV2-P8-004/recovery-release-gate-report.json",
-      "sha256": "8781b6546410284b3075e23338823d3120e7787c35588120fe8a0bb22adeb7df"
+      "sha256": "0479304c82aec61f98248eca63c7883fb5f36dcd4dd0f296ff42bc32d987000e"
    },
    "status": {
      "path": "docs/status/WBV2-P8-004.md",
-      "sha256": "b24961e3ac3bf0240ccc3345b23fc787340da74dd7d7e2cc01869b035037104a"
+      "sha256": "c32b7ef43ba52ef400250c11f2ed5ad60267e73cac309afef22ae724a2136917"
    },
    "recoveryPlan": {
      "path": "tests/golden/WBV2-P8-004/recovery-task-plan.json",
@@ -45,15 +53,18 @@
    },
    "taskContext": {
      "path": "tests/golden/WBV2-P8-004/task-context.json",
-      "sha256": "fa43615164f1cff24612419181b155184351dfb018120aac7987915706a53c76"
+      "sha256": "5aa338e08e1aa583b80e3b73bf760e32a0da88d40de97b673ac6d4b42d0ea793"
    }
  },
  "assertions": {
    "atomicReceipts": 45,
-    "restoredOriginals": 22,
-    "authorizedReplacements": 62,
+    "restoredOriginals": 23,
+    "authorizedReplacements": 61,
    "historicalProvenanceClosed": false,
-    "featureParityClaims": 0
+    "authorizedRebaselineApproved": true,
+    "fullHistoricalReproduction": false,
+    "featureParityClaims": 0,
+    "releaseScope": "AUTHORIZED_REBASELINE_ONLY"
  },
  "nextTask": null
 }
--- a/tests/golden/WBV2-P8-004/recovery-release-gate-report.json
+++ b/tests/golden/WBV2-P8-004/recovery-release-gate-report.json
@@ -12,10 +12,22 @@
    },
    "provenanceEpoch": {
      "path": "tests/golden/WBV2-P8-003/m12-provenance-epoch.json",
-      "sha256": "772c25f1375f46b1649b1431d3e47f4ab532641157ff7a47c9f65a2e2ee67679",
+      "sha256": "a71f145c1d29ca5fec5964213ab2921ab1cf1757099bcc2a3e1d4efedd2b0d61",
      "entries": 84,
-      "restoredOriginals": 22,
-      "authorizedReplacements": 62
+      "restoredOriginals": 23,
+      "authorizedReplacements": 61
+    },
+    "approval": {
+      "path": "docs/status/M12-PROVENANCE-EPOCH-2-APPROVAL.json",
+      "sha256": "cffc869734af94ffe6b8b8004d7ab8cc2c9edcb85ec2a877548e0b0f923f5ea3",
+      "decision": "APPROVED",
+      "approvedBy": "wangdequan"
+    },
+    "searchReport": {
+      "path": "tests/golden/WBV2-P8-003/m12-source-recovery-search.json",
+      "sha256": "4192418563aabf011bb5d6c1407565c87bb492ab208eca69f4768ae35b126fc0",
+      "exactAdditional": 1,
+      "unresolvedHistorical": 61
    },
    "previousGate": {
      "path": "tests/golden/WBV2-P7-003/release-gate-report.json",
@@ -27,14 +39,17 @@
    "atomicReceiptStatus": "CLOSED",
    "chromiumFamilyCount": 15,
    "atomicBehaviorCount": 45,
-    "provenanceStatus": "AUTHORIZED_REBASELINE",
-    "historicalOriginalStatus": "PARTIAL"
+    "provenanceStatus": "AUTHORIZED_REBASELINE_APPROVED",
+    "historicalOriginalStatus": "PARTIAL",
+    "fullHistoricalReproduction": false
  },
  "decision": {
-    "status": "BLOCKED",
-    "code": "HISTORICAL_PROVENANCE_REBASELINE_REQUIRED",
-    "reason": "62 M12 entries use an authorized current-worktree replacement; original historical bytes are unavailable",
+    "status": "READY_WITH_AUTHORIZED_REBASELINE",
+    "code": "AUTHORIZED_REBASELINE_ACCEPTED",
+    "reason": "Project owner approved provenance epoch 2; 61 replacements are accepted only as a new current baseline",
    "featureParityClaims": 0,
+    "fullHistoricalReproduction": false,
+    "releaseScope": "AUTHORIZED_REBASELINE_ONLY",
    "nextTask": null
  },
  "negative": {
@@ -42,8 +57,9 @@
    "receiptHashDrift": "REJECTED",
    "provenanceHashDrift": "REJECTED",
    "falseHistoricalRestoration": "REJECTED",
+    "missingApproval": "REJECTED",
    "unsupportedBrowser": "REJECTED",
-    "queueAdvance": "BLOCKED"
+    "queueAdvance": "CLOSED"
  },
  "nextTask": null
 }
--- a/tests/golden/WBV2-P8-004/task-context.json
+++ b/tests/golden/WBV2-P8-004/task-context.json
@@ -19,12 +19,12 @@
    "limits": {
      "maxFiles": 12,
      "evidenceBytes": 8192,
-      "contextRemainingBytes": 3385,
-      "contextRemainingTokens": 845
+      "contextRemainingBytes": 2689,
+      "contextRemainingTokens": 671
    },
    "source": {
-      "bytes": 6519,
-      "tokens": 1631
+      "bytes": 7215,
+      "tokens": 1805
    },
    "selected": [],
    "excluded": [
@@ -35,13 +35,13 @@
      },
      {
        "path": "tests/golden/WBV2-P8-003/m12-provenance-epoch.json",
-        "bytes": 59189,
+        "bytes": 59741,
        "reason": "EVIDENCE_BYTE_BUDGET"
      },
      {
        "path": "tools/web/check-wbv2-recovery-release-gate.mjs",
-        "bytes": 6686,
-        "reason": "CONTEXT_REMAINING_SPACE"
+        "bytes": 8407,
+        "reason": "EVIDENCE_BYTE_BUDGET"
      },
      {
        "path": "tests/golden/WBV2-P8-004/",
@@ -109,16 +109,16 @@
      "parentTask": "WBV2-P8-002",
      "status": "done",
      "nextTask": "WBV2-P8-004",
-      "artifactCount": 10
+      "artifactCount": 13
    },
    "statusSummary": [
      "# WBV2-P8-003 status",
      "- task: `WBV2-P8-003`; parent: `WBV2-P8-002`; status: `done`",
-      "- provenance epoch: `1`",
-      "- historical originals restored: `22/84`",
-      "- authorized replacements: `62/84`",
+      "- provenance epoch: `2`",
+      "- historical originals restored: `23/84`",
+      "- authorized replacements: `61/84`",
      "- nextTask: `WBV2-P8-004`",
-      "The 22 exact Git-history matches remain immutable restorations. The other 62 entries are explicitly authorized current-worktree replacements; they are not represented as recovery of the unavailable historical bytes."
+      "The 23 exact matches remain immutable restorations. The other 61 entries are explicitly authorized current-worktree replacements; they are not represented as recovery of unavailable historical bytes. Full historical reproduction remains false."
    ]
  },
  "budgets": {
@@ -149,25 +149,25 @@
      },
      {
        "path": "tests/golden/WBV2-P8-003/manifest.json",
-        "bytes": 2199,
-        "lines": 60,
-        "tokens": 550
+        "bytes": 2867,
+        "lines": 73,
+        "tokens": 717
      },
      {
        "path": "docs/status/WBV2-P8-003.md",
-        "bytes": 426,
+        "bytes": 454,
        "lines": 10,
-        "tokens": 107
+        "tokens": 114
      }
    ],
-    "sourceTokens": 1631,
+    "sourceTokens": 1805,
    "evidenceFiles": 0,
    "evidenceBytes": 0,
    "evidenceTokens": 0,
-    "totalTokens": 1631,
+    "totalTokens": 1805,
    "reservedEnvelopeTokens": 1024,
-    "estimatedContextTokens": 2655,
-    "serializedContextTokens": 620,
+    "estimatedContextTokens": 2829,
+    "serializedContextTokens": 611,
    "withinBudget": true
  }
 }
--- a/tests/golden/WBV2/task-index.json
+++ b/tests/golden/WBV2/task-index.json
@@ -1 +1 @@
-{"schemaVersion":1,"operation":"BLENDER_WEB_CAPABILITY_TASK_INDEX","source":{"path":"tests/golden/WBV2-P8-004/recovery-task-plan.json","sha256":"451ac79c0262391679e5e7c3251b99c49973d914e85e14d7e09eb9794befc4be"},"catalog":{"path":"tests/golden/WBV2/task-catalog.jsonl","sha256":"3b2bb72a9494de0e69bb973dcbcf64dbf62d8dda80096141212936f90ef72a42"},"taskCount":36,"activeTask":"WBV2-P8-004","entries":{"WBV2-P0-001":{"line":0,"offset":0,"length":308,"previous":null,"next":"WBV2-P0-002"},"WBV2-P0-002":{"line":1,"offset":308,"length":318,"previous":"WBV2-P0-001","next":"WBV2-P0-003"},"WBV2-P0-003":{"line":2,"offset":626,"length":306,"previous":"WBV2-P0-002","next":"WBV2-P1-001"},"WBV2-P1-001":{"line":3,"offset":932,"length":318,"previous":"WBV2-P0-003","next":"WBV2-P1-002"},"WBV2-P1-002":{"line":4,"offset":1250,"length":299,"previous":"WBV2-P1-001","next":"WBV2-P1-003"},"WBV2-P1-003":{"line":5,"offset":1549,"length":303,"previous":"WBV2-P1-002","next":"WBV2-P1-004"},"WBV2-P1-004":{"line":6,"offset":1852,"length":309,"previous":"WBV2-P1-003","next":"WBV2-P1-005"},"WBV2-P1-005":{"line":7,"offset":2161,"length":324,"previous":"WBV2-P1-004","next":"WBV2-P2-001"},"WBV2-P2-001":{"line":8,"offset":2485,"length":267,"previous":"WBV2-P1-005","next":"WBV2-P2-002"},"WBV2-P2-002":{"line":9,"offset":2752,"length":267,"previous":"WBV2-P2-001","next":"WBV2-P2-003"},"WBV2-P2-003":{"line":10,"offset":3019,"length":274,"previous":"WBV2-P2-002","next":"WBV2-P2-004"},"WBV2-P2-004":{"line":11,"offset":3293,"length":284,"previous":"WBV2-P2-003","next":"WBV2-P2-005"},"WBV2-P2-005":{"line":12,"offset":3577,"length":291,"previous":"WBV2-P2-004","next":"WBV2-P3-001"},"WBV2-P3-001":{"line":13,"offset":3868,"length":271,"previous":"WBV2-P2-005","next":"WBV2-P3-002"},"WBV2-P3-002":{"line":14,"offset":4139,"length":266,"previous":"WBV2-P3-001","next":"WBV2-P3-003"},"WBV2-P3-003":{"line":15,"offset":4405,"length":273,"previous":"WBV2-P3-002","next":"WBV2-P3-004"},"WBV2-P3-004":{"line":16,"offset":4678,"length":263,"previous":"WBV2-P3-003","next":"WBV2-P3-005"},"WBV2-P3-005":{"line":17,"offset":4941,"length":292,"previous":"WBV2-P3-004","next":"WBV2-P4-001"},"WBV2-P4-001":{"line":18,"offset":5233,"length":283,"previous":"WBV2-P3-005","next":"WBV2-P4-002"},"WBV2-P4-002":{"line":19,"offset":5516,"length":277,"previous":"WBV2-P4-001","next":"WBV2-P4-003"},"WBV2-P4-003":{"line":20,"offset":5793,"length":287,"previous":"WBV2-P4-002","next":"WBV2-P4-004"},"WBV2-P4-004":{"line":21,"offset":6080,"length":290,"previous":"WBV2-P4-003","next":"WBV2-P5-001"},"WBV2-P5-001":{"line":22,"offset":6370,"length":296,"previous":"WBV2-P4-004","next":"WBV2-P5-002"},"WBV2-P5-002":{"line":23,"offset":6666,"length":282,"previous":"WBV2-P5-001","next":"WBV2-P5-003"},"WBV2-P5-003":{"line":24,"offset":6948,"length":278,"previous":"WBV2-P5-002","next":"WBV2-P6-001"},"WBV2-P6-001":{"line":25,"offset":7226,"length":278,"previous":"WBV2-P5-003","next":"WBV2-P6-002"},"WBV2-P6-002":{"line":26,"offset":7504,"length":313,"previous":"WBV2-P6-001","next":"WBV2-P6-003"},"WBV2-P6-003":{"line":27,"offset":7817,"length":316,"previous":"WBV2-P6-002","next":"WBV2-P7-001"},"WBV2-P7-001":{"line":28,"offset":8133,"length":312,"previous":"WBV2-P6-003","next":"WBV2-P7-002"},"WBV2-P7-002":{"line":29,"offset":8445,"length":275,"previous":"WBV2-P7-001","next":"WBV2-P7-003"},"WBV2-P7-003":{"line":30,"offset":8720,"length":310,"previous":"WBV2-P7-002","next":"WBV2-P8-000"},"WBV2-P8-000":{"line":31,"offset":9030,"length":290,"previous":"WBV2-P7-003","next":"WBV2-P8-001"},"WBV2-P8-001":{"line":32,"offset":9320,"length":306,"previous":"WBV2-P8-000","next":"WBV2-P8-002"},"WBV2-P8-002":{"line":33,"offset":9626,"length":307,"previous":"WBV2-P8-001","next":"WBV2-P8-003"},"WBV2-P8-003":{"line":34,"offset":9933,"length":312,"previous":"WBV2-P8-002","next":"WBV2-P8-004"},"WBV2-P8-004":{"line":35,"offset":10245,"length":284,"previous":"WBV2-P8-003","next":null}}}
+{"schemaVersion":1,"operation":"BLENDER_WEB_CAPABILITY_TASK_INDEX","source":{"path":"tests/golden/WBV2-P8-003/recovery-task-plan.json","sha256":"788de39c33cf87d3b8d3812f13e9cbd7d1acbfd6fb70df522ccd69f454704666"},"catalog":{"path":"tests/golden/WBV2/task-catalog.jsonl","sha256":"3b2bb72a9494de0e69bb973dcbcf64dbf62d8dda80096141212936f90ef72a42"},"taskCount":36,"activeTask":"WBV2-P8-004","entries":{"WBV2-P0-001":{"line":0,"offset":0,"length":308,"previous":null,"next":"WBV2-P0-002"},"WBV2-P0-002":{"line":1,"offset":308,"length":318,"previous":"WBV2-P0-001","next":"WBV2-P0-003"},"WBV2-P0-003":{"line":2,"offset":626,"length":306,"previous":"WBV2-P0-002","next":"WBV2-P1-001"},"WBV2-P1-001":{"line":3,"offset":932,"length":318,"previous":"WBV2-P0-003","next":"WBV2-P1-002"},"WBV2-P1-002":{"line":4,"offset":1250,"length":299,"previous":"WBV2-P1-001","next":"WBV2-P1-003"},"WBV2-P1-003":{"line":5,"offset":1549,"length":303,"previous":"WBV2-P1-002","next":"WBV2-P1-004"},"WBV2-P1-004":{"line":6,"offset":1852,"length":309,"previous":"WBV2-P1-003","next":"WBV2-P1-005"},"WBV2-P1-005":{"line":7,"offset":2161,"length":324,"previous":"WBV2-P1-004","next":"WBV2-P2-001"},"WBV2-P2-001":{"line":8,"offset":2485,"length":267,"previous":"WBV2-P1-005","next":"WBV2-P2-002"},"WBV2-P2-002":{"line":9,"offset":2752,"length":267,"previous":"WBV2-P2-001","next":"WBV2-P2-003"},"WBV2-P2-003":{"line":10,"offset":3019,"length":274,"previous":"WBV2-P2-002","next":"WBV2-P2-004"},"WBV2-P2-004":{"line":11,"offset":3293,"length":284,"previous":"WBV2-P2-003","next":"WBV2-P2-005"},"WBV2-P2-005":{"line":12,"offset":3577,"length":291,"previous":"WBV2-P2-004","next":"WBV2-P3-001"},"WBV2-P3-001":{"line":13,"offset":3868,"length":271,"previous":"WBV2-P2-005","next":"WBV2-P3-002"},"WBV2-P3-002":{"line":14,"offset":4139,"length":266,"previous":"WBV2-P3-001","next":"WBV2-P3-003"},"WBV2-P3-003":{"line":15,"offset":4405,"length":273,"previous":"WBV2-P3-002","next":"WBV2-P3-004"},"WBV2-P3-004":{"line":16,"offset":4678,"length":263,"previous":"WBV2-P3-003","next":"WBV2-P3-005"},"WBV2-P3-005":{"line":17,"offset":4941,"length":292,"previous":"WBV2-P3-004","next":"WBV2-P4-001"},"WBV2-P4-001":{"line":18,"offset":5233,"length":283,"previous":"WBV2-P3-005","next":"WBV2-P4-002"},"WBV2-P4-002":{"line":19,"offset":5516,"length":277,"previous":"WBV2-P4-001","next":"WBV2-P4-003"},"WBV2-P4-003":{"line":20,"offset":5793,"length":287,"previous":"WBV2-P4-002","next":"WBV2-P4-004"},"WBV2-P4-004":{"line":21,"offset":6080,"length":290,"previous":"WBV2-P4-003","next":"WBV2-P5-001"},"WBV2-P5-001":{"line":22,"offset":6370,"length":296,"previous":"WBV2-P4-004","next":"WBV2-P5-002"},"WBV2-P5-002":{"line":23,"offset":6666,"length":282,"previous":"WBV2-P5-001","next":"WBV2-P5-003"},"WBV2-P5-003":{"line":24,"offset":6948,"length":278,"previous":"WBV2-P5-002","next":"WBV2-P6-001"},"WBV2-P6-001":{"line":25,"offset":7226,"length":278,"previous":"WBV2-P5-003","next":"WBV2-P6-002"},"WBV2-P6-002":{"line":26,"offset":7504,"length":313,"previous":"WBV2-P6-001","next":"WBV2-P6-003"},"WBV2-P6-003":{"line":27,"offset":7817,"length":316,"previous":"WBV2-P6-002","next":"WBV2-P7-001"},"WBV2-P7-001":{"line":28,"offset":8133,"length":312,"previous":"WBV2-P6-003","next":"WBV2-P7-002"},"WBV2-P7-002":{"line":29,"offset":8445,"length":275,"previous":"WBV2-P7-001","next":"WBV2-P7-003"},"WBV2-P7-003":{"line":30,"offset":8720,"length":310,"previous":"WBV2-P7-002","next":"WBV2-P8-000"},"WBV2-P8-000":{"line":31,"offset":9030,"length":290,"previous":"WBV2-P7-003","next":"WBV2-P8-001"},"WBV2-P8-001":{"line":32,"offset":9320,"length":306,"previous":"WBV2-P8-000","next":"WBV2-P8-002"},"WBV2-P8-002":{"line":33,"offset":9626,"length":307,"previous":"WBV2-P8-001","next":"WBV2-P8-003"},"WBV2-P8-003":{"line":34,"offset":9933,"length":312,"previous":"WBV2-P8-002","next":"WBV2-P8-004"},"WBV2-P8-004":{"line":35,"offset":10245,"length":284,"previous":"WBV2-P8-003","next":null}}}
--- a/tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/protocol/glb-import.ts.m12-06F
+++ b/tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/protocol/glb-import.ts.m12-06F
@@ -0,0 +1,485 @@
+import type { GLBAssetBuffer } from "./glb-export";
+import type { SceneSnapshotIR } from "./scene-ir";
+
+const GLB_MAGIC = 0x46546c67;
+const JSON_CHUNK = 0x4e4f534a;
+const BIN_CHUNK = 0x004e4942;
+
+interface GLBAccessor {
+  bufferView?: number;
+  byteOffset?: number;
+  componentType: number;
+  count: number;
+  type: string;
+  normalized?: boolean;
+  min?: number[];
+  max?: number[];
+  sparse?: Record<string, unknown>;
+}
+
+interface GLBBufferView {
+  buffer: number;
+  byteOffset?: number;
+  byteLength: number;
+}
+
+interface GLBPrimitive {
+  attributes?: Record<string, number>;
+  indices?: number;
+  material?: number;
+  mode?: number;
+  targets?: Array<Record<string, number>>;
+}
+
+interface GLBDocument {
+  asset?: { version?: string; generator?: string };
+  scene?: number;
+  scenes?: Array<{ nodes?: number[] }>;
+  extensionsUsed?: string[];
+  extensionsRequired?: string[];
+  buffers?: Array<{ byteLength?: number; uri?: string }>;
+  bufferViews?: GLBBufferView[];
+  accessors?: GLBAccessor[];
+  meshes?: Array<{ name?: string; primitives?: GLBPrimitive[]; extras?: Record<string, unknown> }>;
+  images?: Array<{ name?: string; mimeType?: string; bufferView?: number; uri?: string; extras?: Record<string, unknown> }>;
+  samplers?: Array<Record<string, unknown>>;
+  textures?: Array<{ sampler?: number; source?: number }>;
+  materials?: Array<{
+    name?: string;
+    alphaMode?: string;
+    doubleSided?: boolean;
+    pbrMetallicRoughness?: {
+      baseColorFactor?: number[];
+      baseColorTexture?: Record<string, unknown>;
+      metallicFactor?: number;
+      roughnessFactor?: number;
+    };
+    normalTexture?: Record<string, unknown>;
+    emissiveFactor?: number[];
+  }>;
+  nodes?: Array<{
+    name?: string;
+    mesh?: number;
+    skin?: number;
+    children?: number[];
+    translation?: number[];
+    rotation?: number[];
+    scale?: number[];
+  }>;
+  skins?: Array<{ name?: string; joints?: number[]; inverseBindMatrices?: number; skeleton?: number; extras?: Record<string, unknown> }>;
+  animations?: Array<{
+    name?: string;
+    samplers?: Array<{ input?: number; output?: number; interpolation?: string }>;
+    channels?: Array<{ sampler?: number; target?: { node?: number; path?: string } }>;
+    extras?: Record<string, unknown>;
+  }>;
+}
+
+export const GLB_IMPORT_BUDGET = {
+  maxBytes: 512 * 1024,
+  maxJsonBytes: 256 * 1024,
+  maxBufferViews: 4096,
+  maxAccessors: 8192,
+} as const;
+
+export interface ImportedGLBImage {
+  name?: string;
+  blenderId?: string;
+  mimeType?: string;
+  byteLength: number;
+  signature: number[];
+}
+
+export interface ImportedGLBSemantics {
+  version: 2;
+  meshCount: number;
+  primitiveCount: number;
+  meshes: Array<{ name?: string; blenderId?: string; primitiveCount: number; attributes: string[]; morphTargetCount: number }>;
+  images: ImportedGLBImage[];
+  skinCount: number;
+  skins: Array<{ jointCount: number; inverseBindType?: string; inverseBindCount?: number }>;
+  animationCount: number;
+  animationChannelCount: number;
+  animationPaths: string[];
+}
+
+export interface GLBSemanticComparison {
+  compatible: boolean;
+  mismatches: string[];
+}
+
+export interface GLBDesktopAccessorSemantics {
+  componentType: number;
+  count: number;
+  type: string;
+  normalized: boolean;
+  min: number[] | null;
+  max: number[] | null;
+}
+
+export interface GLBDesktopFixtureSemantics {
+  asset: { version?: string; generator?: string } | null;
+  extensionsUsed: string[];
+  extensionsRequired: string[];
+  scene: number | null;
+  nodeNames: Array<string | null>;
+  nodes: Array<{
+    name: string | null;
+    mesh: number | null;
+    skin: number | null;
+    children: number[];
+    translation: number[] | null;
+    rotation: number[] | null;
+    scale: number[] | null;
+  }>;
+  meshes: Array<{
+    name: string | null;
+    primitives: Array<{
+      attributes: Record<string, GLBDesktopAccessorSemantics>;
+      indices: GLBDesktopAccessorSemantics | null;
+      material: number | null;
+      mode: number;
+      targets: Array<Record<string, GLBDesktopAccessorSemantics>>;
+    }>;
+  }>;
+  materials: Array<{
+    name: string | null;
+    alphaMode: string;
+    doubleSided: boolean;
+    pbr: {
+      baseColorFactor: number[] | null;
+      baseColorTexture: Record<string, unknown> | null;
+      metallicFactor: number | null;
+      roughnessFactor: number | null;
+    };
+    normalTexture: Record<string, unknown> | null;
+    emissiveFactor: number[] | null;
+  }>;
+  textures: Array<Record<string, unknown>>;
+  images: Array<Record<string, unknown>>;
+  samplers: Array<Record<string, unknown>>;
+  skins: Array<{
+    name: string | null;
+    joints: number[];
+    inverseBindMatrices: GLBDesktopAccessorSemantics | null;
+    skeleton: number | null;
+  }>;
+  animations: Array<{
+    name: string | null;
+    samplers: Array<{
+      interpolation: string;
+      input: GLBDesktopAccessorSemantics | null;
+      output: GLBDesktopAccessorSemantics | null;
+    }>;
+    channels: Array<{ sampler: number; target: { node: number; path: string } }>;
+  }>;
+}
+
+function recordId(extras: Record<string, unknown> | undefined): string | undefined {
+  return typeof extras?.blenderId === "string" ? extras.blenderId : undefined;
+}
+
+function requireIndex(value: unknown, size: number, label: string): number {
+  if (!Number.isSafeInteger(value) || (value as number) < 0 || (value as number) >= size) throw new Error(`${label} index is out of range`);
+  return value as number;
+}
+
+function jsonChunk(bytes: Uint8Array, length: number): GLBDocument {
+  if (bytes.byteLength > GLB_IMPORT_BUDGET.maxBytes) throw new Error(`GLB_IMPORT_BUDGET_EXCEEDED: file exceeds ${GLB_IMPORT_BUDGET.maxBytes} bytes`);
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
+  if (bytes.byteLength < 20 || view.getUint32(0, true) !== GLB_MAGIC || view.getUint32(4, true) !== 2) throw new Error("GLB header is invalid");
+  if (view.getUint32(8, true) !== bytes.byteLength) throw new Error("GLB length does not match header");
+  const jsonLength = view.getUint32(12, true);
+  if (jsonLength > GLB_IMPORT_BUDGET.maxJsonBytes || view.getUint32(16, true) !== JSON_CHUNK || jsonLength % 4 !== 0 || 20 + jsonLength > bytes.byteLength) throw new Error("GLB JSON chunk is invalid");
+  let document: unknown;
+  try {
+    document = JSON.parse(new TextDecoder().decode(bytes.subarray(20, 20 + jsonLength)).trim());
+  }
+  catch (error) {
+    throw new Error(`GLB JSON is invalid: ${error instanceof Error ? error.message : "parse failed"}`);
+  }
+  if (typeof document !== "object" || document === null || Array.isArray(document)) throw new Error("GLB JSON document is invalid");
+  if ((document as GLBDocument).asset?.version !== "2.0") throw new Error("GLB asset version is not 2.0");
+  return document as GLBDocument;
+}
+
+function bufferViewBytes(bytes: Uint8Array, jsonLength: number, view: GLBBufferView, label: string): Uint8Array {
+  if (view.buffer !== 0 || !Number.isSafeInteger(view.byteLength) || view.byteLength < 0) throw new Error(`${label} bufferView is invalid`);
+  const binaryStart = 20 + jsonLength + 8;
+  const offset = view.byteOffset ?? 0;
+  if (!Number.isSafeInteger(offset) || offset < 0 || binaryStart + offset + view.byteLength > bytes.byteLength) throw new Error(`${label} bufferView exceeds BIN chunk`);
+  return bytes.subarray(binaryStart + offset, binaryStart + offset + view.byteLength);
+}
+
+export function importGLBSemantics(glb: ArrayBuffer): ImportedGLBSemantics {
+  const bytes = new Uint8Array(glb);
+  const view = new DataView(glb);
+  const jsonLength = view.getUint32(12, true);
+  const document = jsonChunk(bytes, glb.byteLength);
+  if ((document.extensionsUsed?.length ?? 0) > 0 || (document.extensionsRequired?.length ?? 0) > 0) throw new Error("GLB_EXTENSION_UNSUPPORTED: extensions are outside the bounded importer");
+  if ((document.buffers ?? []).some((buffer) => buffer.uri !== undefined) || (document.images ?? []).some((image) => image.uri !== undefined)) throw new Error("GLB_EXTERNAL_URI_BLOCKED: external URI resources are not accepted");
+  const bufferViews = document.bufferViews ?? [];
+  const accessors = document.accessors ?? [];
+  if (bufferViews.length > GLB_IMPORT_BUDGET.maxBufferViews || accessors.length > GLB_IMPORT_BUDGET.maxAccessors) throw new Error("GLB_IMPORT_BUDGET_EXCEEDED: accessor or bufferView count exceeds the bounded importer");
+  for (const [index, bufferView] of bufferViews.entries()) bufferViewBytes(bytes, jsonLength, bufferView, `bufferViews[${index}]`);
+  const accessorType = (index: number): string => accessors[requireIndex(index, accessors.length, "accessor")]?.type ?? "";
+  for (const [index, accessor] of accessors.entries()) {
+    if (accessor.sparse !== undefined) throw new Error(`GLB_SPARSE_ACCESSOR_UNSUPPORTED: accessors[${index}]`);
+    if (!Number.isSafeInteger(accessor.count) || accessor.count < 0 || (accessor.byteOffset ?? 0) < 0) throw new Error(`accessors[${index}] is invalid`);
+    if (accessor.bufferView !== undefined) {
+      const bytesForAccessor = bufferViewBytes(bytes, jsonLength, bufferViews[requireIndex(accessor.bufferView, bufferViews.length, `accessors[${index}]`)], `accessors[${index}]`);
+      const componentBytes = accessor.componentType === 5126 || accessor.componentType === 5125 ? 4 : accessor.componentType === 5123 ? 2 : 1;
+      const width = accessor.type === "SCALAR" ? 1 : accessor.type === "VEC2" ? 2 : accessor.type === "VEC3" ? 3 : accessor.type === "VEC4" ? 4 : accessor.type === "MAT4" ? 16 : 0;
+      if (width === 0 || (accessor.byteOffset ?? 0) + accessor.count * width * componentBytes > bytesForAccessor.byteLength) throw new Error(`accessors[${index}] exceeds bufferView`);
+    }
+  }
+  const images = (document.images ?? []).map((image, index) => {
+    if (image.bufferView === undefined) throw new Error(`images[${index}] has no embedded bufferView`);
+    const data = bufferViewBytes(bytes, jsonLength, bufferViews[requireIndex(image.bufferView, bufferViews.length, `images[${index}]`)], `images[${index}]`);
+    return { name: image.name, blenderId: recordId(image.extras), mimeType: image.mimeType, byteLength: data.byteLength, signature: Array.from(data.subarray(0, 8)) };
+  });
+  const meshes = (document.meshes ?? []).map((mesh, index) => {
+    const primitives = mesh.primitives ?? [];
+    const attributes = new Set<string>();
+    let morphTargetCount = 0;
+    for (const [primitiveIndex, primitive] of primitives.entries()) {
+      for (const semantic of Object.keys(primitive.attributes ?? {})) {
+        const accessor = requireIndex(primitive.attributes?.[semantic], accessors.length, `meshes[${index}].primitives[${primitiveIndex}].${semantic}`);
+        accessorType(accessor);
+        attributes.add(semantic);
+      }
+      if (primitive.indices !== undefined) accessorType(requireIndex(primitive.indices, accessors.length, "primitive indices"));
+      morphTargetCount = Math.max(morphTargetCount, primitive.targets?.length ?? 0);
+    }
+    return { name: mesh.name, blenderId: recordId(mesh.extras), primitiveCount: primitives.length, attributes: [...attributes].sort(), morphTargetCount };
+  });
+  const skins = (document.skins ?? []).map((skin, index) => {
+    const jointCount = skin.joints?.length ?? 0;
+    if (jointCount === 0) throw new Error(`skins[${index}] has no joints`);
+    let inverseBindType: string | undefined;
+    let inverseBindCount: number | undefined;
+    if (skin.inverseBindMatrices !== undefined) {
+      const accessor = accessors[requireIndex(skin.inverseBindMatrices, accessors.length, `skins[${index}].inverseBindMatrices`)]!;
+      inverseBindType = accessor.type;
+      inverseBindCount = accessor.count;
+      if (inverseBindType !== "MAT4" || inverseBindCount !== jointCount) throw new Error(`skins[${index}] inverse bind matrices do not match joints`);
+    }
+    return { jointCount, inverseBindType, inverseBindCount };
+  });
+  const animations = document.animations ?? [];
+  const animationPaths = animations.flatMap((animation) => (animation.channels ?? []).map((channel) => channel.target?.path ?? "")).filter(Boolean).sort();
+  return { version: 2, meshCount: meshes.length, primitiveCount: meshes.reduce((sum, mesh) => sum + mesh.primitiveCount, 0), meshes, images, skinCount: skins.length, skins, animationCount: animations.length, animationChannelCount: animationPaths.length, animationPaths };
+}
+
+function desktopAccessorSemantics(accessors: readonly GLBAccessor[], index: number | undefined, label: string): GLBDesktopAccessorSemantics | null {
+  if (index === undefined) return null;
+  const accessor = accessors[requireIndex(index, accessors.length, label)]!;
+  return {
+    componentType: accessor.componentType,
+    count: accessor.count,
+    type: accessor.type,
+    normalized: accessor.normalized === true,
+    min: accessor.min ?? null,
+    max: accessor.max ?? null,
+  };
+}
+
+/**
+ * Imports the canonical, bounded semantic surface used by the M12 desktop GLB
+ * fixtures. This intentionally does not create Blender Main data; that writer
+ * and its stable-ID persistence gate belong to M12-06C.
+ */
+export function importGLBDesktopFixtureSemantics(glb: ArrayBuffer): GLBDesktopFixtureSemantics {
+  importGLBSemantics(glb);
+  const bytes = new Uint8Array(glb);
+  const jsonLength = new DataView(glb).getUint32(12, true);
+  const document = jsonChunk(bytes, glb.byteLength);
+  const accessors = document.accessors ?? [];
+  const meshes = document.meshes ?? [];
+  const materials = document.materials ?? [];
+  const nodes = document.nodes ?? [];
+  const textures = document.textures ?? [];
+  const images = document.images ?? [];
+  const samplers = document.samplers ?? [];
+  const skins = document.skins ?? [];
+  const animations = document.animations ?? [];
+
+  if (document.scene !== undefined) requireIndex(document.scene, document.scenes?.length ?? 0, "scene");
+  for (const [index, node] of nodes.entries()) {
+    if (node.mesh !== undefined) requireIndex(node.mesh, meshes.length, `nodes[${index}].mesh`);
+    if (node.skin !== undefined) requireIndex(node.skin, skins.length, `nodes[${index}].skin`);
+    for (const child of node.children ?? []) requireIndex(child, nodes.length, `nodes[${index}].children`);
+  }
+  for (const [index, texture] of textures.entries()) {
+    if (texture.source !== undefined) requireIndex(texture.source, images.length, `textures[${index}].source`);
+    if (texture.sampler !== undefined) requireIndex(texture.sampler, samplers.length, `textures[${index}].sampler`);
+  }
+
+  const importedMeshes = meshes.map((mesh, meshIndex) => ({
+    name: mesh.name ?? null,
+    primitives: (mesh.primitives ?? []).map((primitive, primitiveIndex) => {
+      if (primitive.material !== undefined) requireIndex(primitive.material, materials.length, `meshes[${meshIndex}].primitives[${primitiveIndex}].material`);
+      const attributes: Record<string, GLBDesktopAccessorSemantics> = {};
+      for (const [name, accessor] of Object.entries(primitive.attributes ?? {}).sort(([left], [right]) => left.localeCompare(right))) {
+        attributes[name] = desktopAccessorSemantics(accessors, accessor, `meshes[${meshIndex}].primitives[${primitiveIndex}].attributes.${name}`)!;
+      }
+      return {
+        attributes,
+        indices: desktopAccessorSemantics(accessors, primitive.indices, `meshes[${meshIndex}].primitives[${primitiveIndex}].indices`),
+        material: primitive.material ?? null,
+        mode: primitive.mode ?? 4,
+        targets: (primitive.targets ?? []).map((target, targetIndex) => {
+          const imported: Record<string, GLBDesktopAccessorSemantics> = {};
+          for (const [name, accessor] of Object.entries(target).sort(([left], [right]) => left.localeCompare(right))) {
+            imported[name] = desktopAccessorSemantics(accessors, accessor, `meshes[${meshIndex}].primitives[${primitiveIndex}].targets[${targetIndex}].${name}`)!;
+          }
+          return imported;
+        }),
+      };
+    }),
+  }));
+
+  const importedSkins = skins.map((skin, skinIndex) => {
+    const joints = skin.joints ?? [];
+    for (const joint of joints) requireIndex(joint, nodes.length, `skins[${skinIndex}].joints`);
+    if (skin.skeleton !== undefined) requireIndex(skin.skeleton, nodes.length, `skins[${skinIndex}].skeleton`);
+    return {
+      name: skin.name ?? null,
+      joints,
+      inverseBindMatrices: desktopAccessorSemantics(accessors, skin.inverseBindMatrices, `skins[${skinIndex}].inverseBindMatrices`),
+      skeleton: skin.skeleton ?? null,
+    };
+  });
+
+  const importedAnimations = animations.map((animation, animationIndex) => {
+    const animationSamplers = animation.samplers ?? [];
+    return {
+      name: animation.name ?? null,
+      samplers: animationSamplers.map((sampler, samplerIndex) => ({
+        interpolation: sampler.interpolation ?? "LINEAR",
+        input: desktopAccessorSemantics(accessors, sampler.input, `animations[${animationIndex}].samplers[${samplerIndex}].input`),
+        output: desktopAccessorSemantics(accessors, sampler.output, `animations[${animationIndex}].samplers[${samplerIndex}].output`),
+      })),
+      channels: (animation.channels ?? []).map((channel, channelIndex) => {
+        const sampler = requireIndex(channel.sampler, animationSamplers.length, `animations[${animationIndex}].channels[${channelIndex}].sampler`);
+        const node = requireIndex(channel.target?.node, nodes.length, `animations[${animationIndex}].channels[${channelIndex}].target.node`);
+        const path = channel.target?.path;
+        if (path !== "translation" && path !== "rotation" && path !== "scale" && path !== "weights") throw new Error(`animations[${animationIndex}].channels[${channelIndex}].target.path is invalid`);
+        return { sampler, target: { node, path } };
+      }),
+    };
+  });
+
+  return {
+    asset: document.asset ?? null,
+    extensionsUsed: [...(document.extensionsUsed ?? [])].sort(),
+    extensionsRequired: [...(document.extensionsRequired ?? [])].sort(),
+    scene: document.scene ?? null,
+    nodeNames: nodes.map((node) => node.name ?? null),
+    nodes: nodes.map((node) => ({
+      name: node.name ?? null,
+      mesh: node.mesh ?? null,
+      skin: node.skin ?? null,
+      children: node.children ?? [],
+      translation: node.translation ?? null,
+      rotation: node.rotation ?? null,
+      scale: node.scale ?? null,
+    })),
+    meshes: importedMeshes,
+    materials: materials.map((material) => {
+      const pbr = material.pbrMetallicRoughness ?? {};
+      return {
+        name: material.name ?? null,
+        alphaMode: material.alphaMode ?? "OPAQUE",
+        doubleSided: material.doubleSided === true,
+        pbr: {
+          baseColorFactor: pbr.baseColorFactor ?? null,
+          baseColorTexture: pbr.baseColorTexture ?? null,
+          metallicFactor: pbr.metallicFactor ?? null,
+          roughnessFactor: pbr.roughnessFactor ?? null,
+        },
+        normalTexture: material.normalTexture ?? null,
+        emissiveFactor: material.emissiveFactor ?? null,
+      };
+    }),
+    textures: textures.map((texture) => ({ ...texture })),
+    images: images.map((image) => ({ ...image })),
+    samplers: samplers.map((sampler) => ({ ...sampler })),
+    skins: importedSkins,
+    animations: importedAnimations,
+  };
+}
+
+function semanticMismatches(expected: unknown, actual: unknown, path: string, mismatches: string[]): void {
+  if (Object.is(expected, actual)) return;
+  if (Array.isArray(expected) || Array.isArray(actual)) {
+    if (!Array.isArray(expected) || !Array.isArray(actual)) {
+      mismatches.push(`${path}: expected ${JSON.stringify(expected)} got ${JSON.stringify(actual)}`);
+      return;
+    }
+    if (expected.length !== actual.length) mismatches.push(`${path}.length: expected ${expected.length} got ${actual.length}`);
+    for (let index = 0; index < Math.min(expected.length, actual.length); index++) semanticMismatches(expected[index], actual[index], `${path}[${index}]`, mismatches);
+    return;
+  }
+  if (typeof expected === "object" && expected !== null && typeof actual === "object" && actual !== null) {
+    const expectedRecord = expected as Record<string, unknown>;
+    const actualRecord = actual as Record<string, unknown>;
+    for (const key of [...new Set([...Object.keys(expectedRecord), ...Object.keys(actualRecord)])].sort()) {
+      semanticMismatches(expectedRecord[key], actualRecord[key], `${path}.${key}`, mismatches);
+    }
+    return;
+  }
+  mismatches.push(`${path}: expected ${JSON.stringify(expected)} got ${JSON.stringify(actual)}`);
+}
+
+export function compareGLBDesktopFixtureSemantics(expected: unknown, actual: GLBDesktopFixtureSemantics): GLBSemanticComparison {
+  const mismatches: string[] = [];
+  semanticMismatches(expected, actual, "$", mismatches);
+  return { compatible: mismatches.length === 0, mismatches };
+}
+
+export function compareGLBToSceneIR(snapshot: SceneSnapshotIR, imported: ImportedGLBSemantics, assetBuffers: readonly GLBAssetBuffer[] = []): GLBSemanticComparison {
+  const mismatches: string[] = [];
+  const geometryMeshIds = new Set(snapshot.meshes.filter((mesh) => mesh.geometryStatus !== "summary-only").map((mesh) => mesh.id));
+  const importedMeshIds = new Set(imported.meshes.map((mesh) => mesh.blenderId).filter((id): id is string => Boolean(id)));
+  for (const id of geometryMeshIds) if (!importedMeshIds.has(id)) mismatches.push(`mesh missing: ${id}`);
+  const expectedImages = assetBuffers.filter((asset) => snapshot.images.some((image) => image.assetId === asset.assetId && asset.data.byteLength > 0));
+  if (imported.images.length !== expectedImages.length) mismatches.push(`image count ${imported.images.length} != ${expectedImages.length}`);
+  for (const asset of expectedImages) {
+    const image = imported.images.find((candidate) => candidate.blenderId === snapshot.images.find((source) => source.assetId === asset.assetId)?.id);
+    if (!image || image.byteLength !== asset.data.byteLength || image.mimeType !== asset.mimeType) mismatches.push(`image semantic mismatch: ${asset.assetId}`);
+  }
+  const expectedSkins = snapshot.meshes.filter((mesh) => mesh.skinWeights?.armatureId && snapshot.armatures?.some((armature) => armature.id === mesh.skinWeights?.armatureId));
+  if (imported.skinCount !== expectedSkins.length) mismatches.push(`skin count ${imported.skinCount} != ${expectedSkins.length}`);
+  for (const mesh of expectedSkins) {
+    const expectedJoints = mesh.skinWeights?.jointIds?.length ?? 0;
+    if (!imported.skins.some((skin) => skin.jointCount === expectedJoints && skin.inverseBindType === "MAT4")) mismatches.push(`skin semantic mismatch: ${mesh.id}`);
+  }
+  const expectedMorphs = snapshot.meshes.filter((mesh) => (mesh.shapeKeys?.length ?? 0) > 0).reduce((sum, mesh) => sum + (mesh.shapeKeys?.length ?? 0), 0);
+  const importedMorphs = imported.meshes.reduce((sum, mesh) => sum + mesh.morphTargetCount, 0);
+  if (importedMorphs !== expectedMorphs) mismatches.push(`morph target count ${importedMorphs} != ${expectedMorphs}`);
+  const expectedAnimationPaths: string[] = [];
+  let expectedAnimations = 0;
+  for (const animation of snapshot.animations) {
+    const groups = new Set<string>();
+    for (const channel of animation.channels) {
+      const boneMatch = channel.path.match(/^pose\.bones\["(.+)"\]\.(location|scale|rotation_euler|rotation_quaternion)\[(\d)\]$/);
+      const objectMatch = channel.path.match(/^(location|scale|rotation_euler|rotation_quaternion)\[(\d)\]$/);
+      const property = boneMatch?.[2] ?? objectMatch?.[1];
+      if (!property || channel.keyframes.length === 0) continue;
+      if (boneMatch) {
+        const armature = (snapshot.armatures ?? []).find((candidate) => candidate.objectId === animation.targetId);
+        if (!armature?.bones.some((bone) => bone.name === boneMatch[1])) continue;
+      }
+      else if (!snapshot.nodes.some((node) => node.id === animation.targetId)) continue;
+      const path = property === "location" ? "translation" : property === "scale" ? "scale" : "rotation";
+      groups.add(`${boneMatch?.[1] ?? animation.targetId}:${path}`);
+    }
+    if (groups.size > 0) expectedAnimations++;
+    for (const group of groups) expectedAnimationPaths.push(group.slice(group.lastIndexOf(":") + 1));
+  }
+  expectedAnimationPaths.sort();
+  if (imported.animationCount !== expectedAnimations) mismatches.push(`animation count ${imported.animationCount} != ${expectedAnimations}`);
+  if (imported.animationPaths.join(",") !== expectedAnimationPaths.join(",")) mismatches.push(`animation paths ${imported.animationPaths.join(",")} != ${expectedAnimationPaths.join(",")}`);
+  return { compatible: mismatches.length === 0, mismatches };
+}
--- a/tests/golden/corrective/rehydration/M12-supplemental-exact-recovery.json
+++ b/tests/golden/corrective/rehydration/M12-supplemental-exact-recovery.json
@@ -0,0 +1,18 @@
+{
+  "schemaVersion": 1,
+  "operation": "M12_SUPPLEMENTAL_EXACT_RECOVERY",
+  "sourceKind": "LOCAL_RELEASE_SOURCE_ARCHIVE",
+  "sourceArchive": "release/blender-web-corresponding-source.tar.gz",
+  "sourceArchiveSha256": "1a57a8c53e68ffca50e730f280c68636553d7a6ea1c4bce3b45823b4677c294c",
+  "entries": [
+    {
+      "task": "M12-06F",
+      "artifact": "protocol",
+      "path": "web/protocol/glb-import.ts",
+      "originalSha256": "0b6329c08e6f3cd9af6f27ef7c463b037a7cab94192afb4538d3d6c4cfcbc147",
+      "snapshotPath": "tests/golden/corrective/rehydration/M12-git-history-snapshot/files/web/protocol/glb-import.ts.m12-06F",
+      "snapshotSha256": "0b6329c08e6f3cd9af6f27ef7c463b037a7cab94192afb4538d3d6c4cfcbc147",
+      "verified": true
+    }
+  ]
+}