Complete M16 action select lasso parity

2026-08-20 23:07:57 -04:00
parent 7440b51394
commit e8ce4f5d0c
15 changed files with 513 additions and 14 deletions
--- a/docs/EXECUTION_QUEUE.md
+++ b/docs/EXECUTION_QUEUE.md
@@ -9,10 +9,10 @@
 | 字段 | 值 |
 | --- | --- |
 | 里程碑 | M16 Main、Mesh、Modifier、Sculpt |
-| 当前任务 | `M16-GAP-00138` |
-| parent manifest | `tests/golden/M16-GAP-00137/manifest.json` |
-| 任务卡 | [`tasks/M16-GAP-00138.md`](tasks/M16-GAP-00138.md) |
-| 专项验收 | `npm --prefix web run test:generated-gap -- --task M16-GAP-00138` |
+| 当前任务 | `M16-GAP-00139` |
+| parent manifest | `tests/golden/M16-GAP-00138/manifest.json` |
+| 任务卡 | [`tasks/M16-GAP-00139.md`](tasks/M16-GAP-00139.md) |
+| 专项验收 | `npm --prefix web run test:generated-gap -- --task M16-GAP-00139` |

 领取前执行：

--- a/docs/status/M16-GAP-00138.md
+++ b/docs/status/M16-GAP-00138.md
@@ -0,0 +1,17 @@
+# M16-GAP-00138 Status
+
+status: done
+task: action.select_lasso operator LOCAL_EXACT slice
+updated: 2026-08-20 America/New_York
+
+scope:
+
+- Action Editor lasso selection on `object:WebGapSelectLassoObject`.
+
+evidence:
+
+- Blender desktop and WASM/Main expose matching three location channels with frame 3 selected.
+- Save/reopen is exact; malformed Blend input is rejected without Main mutation.
+- Fixture generation, desktop checker, npm comparator, direct comparator, context handoff and manifest hashing passed.
+
+nextTask: `M16-GAP-00139`
--- a/docs/tasks/M16-GAP-00139.md
+++ b/docs/tasks/M16-GAP-00139.md
@@ -0,0 +1,37 @@
+# M16-GAP-00139: operator:action.select_leftright LOCAL_EXACT slice
+
+- task: M16-GAP-00139
+- parent: M16-GAP-00138
+- status: in_progress
+- gap: operator:action.select_leftright
+- ownerFamily: OPERATOR
+- targetImplementationClass: LOCAL_EXACT
+
+## 目标
+
+Make the same minimal fixture produce observable operator:action.select_leftright data in Blender desktop and WASM/Main, with save/reopen stability. Change only this gap; do not expand to other data-blocks, editors, or browsers.
+
+## 输入与范围
+
+- Fixture: `tests/files/web/generated/M16-GAP-00139-operator-action.select_leftright.blend`
+- Generator: `tools/web/generated/M16-GAP-00139.py`
+- Production: `blender-5.2.0/source/blender/web_engine/web_engine_blend_reader.cpp`
+- Checker: `tools/web/check-generated-gap.mjs`
+- Do: field read, desktop/WASM comparison, save/reopen, structured report.
+- Do not: other gaps, Firefox/WebKit, or full editor behavior.
+
+## 验收
+
+build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/generated/M16-GAP-00139.py -- tests/files/web/generated/M16-GAP-00139-operator-action.select_leftright.blend
+npm --prefix web run test:generated-gap -- --task M16-GAP-00139
+node tools/web/check-generated-gap.mjs --task M16-GAP-00139
+
+Malformed/unsupported, cancellation, duplicate, over-budget, or hash-drift cases must keep in_progress; they must not change Main revision or advance nextTask.
+
+## 交付与回滚
+
+- Reports: `tests/golden/M16-GAP-00139/`
+- Status: `docs/status/M16-GAP-00139.md`
+- Manifest: `tests/golden/M16-GAP-00139/manifest.json`
+- Handoff: `node tools/web/check-task-context.mjs --task M16-GAP-00139 --write`
+- Rollback: remove this task production entry, fixture, tests, reports, manifest, status, and context; restore the parent as queue tail without rewriting parent evidence.
--- a/tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend
+++ b/tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend
--- a/tests/golden/M15-03A/completed-gap-tasks.json
+++ b/tests/golden/M15-03A/completed-gap-tasks.json
@@ -135,5 +135,6 @@
  "operator:action.select_box",
  "operator:action.select_by_type",
  "operator:action.select_circle",
-  "operator:action.select_column"
+  "operator:action.select_column",
+  "operator:action.select_lasso"
 ]
--- a/tests/golden/M15-03A/next-task-plan.json
+++ b/tests/golden/M15-03A/next-task-plan.json
@@ -13,14 +13,14 @@
    },
    "completions": {
      "path": "tests/golden/M15-03A/completed-gap-tasks.json",
-      "sha256": "bd0da816e54864a855ec14d14eefc2423823c8002e2f15776807a2c7f9e9175d"
+      "sha256": "bb40f03bb78882f60f31025dbc7b903bc90978fd5a916cc45c2147cd755a3631"
    }
  },
  "summary": {
    "taskCount": 6900,
    "active": 1,
-    "pending": 6762,
-    "completed": 137,
+    "pending": 6761,
+    "completed": 138,
    "blocked": 0,
    "byWave": {
      "M16": 2667,
@@ -3189,7 +3189,7 @@
      "gapId": "operator:action.select_lasso",
      "ownerFamily": "OPERATOR",
      "sourceTask": "M15-01B",
-      "state": "active",
+      "state": "completed",
      "dependencies": [],
      "targetImplementationClass": "LOCAL_EXACT",
      "fixture": {
@@ -3212,7 +3212,7 @@
      "gapId": "operator:action.select_leftright",
      "ownerFamily": "OPERATOR",
      "sourceTask": "M15-01B",
-      "state": "pending",
+      "state": "active",
      "dependencies": [],
      "targetImplementationClass": "LOCAL_EXACT",
      "fixture": {
@@ -158734,7 +158734,7 @@
      ]
    }
  ],
-  "firstTask": "M16-GAP-00138",
+  "firstTask": "M16-GAP-00139",
  "closureGate": "M15-03E",
  "nextTask": "M15-03B"
 }
--- a/tests/golden/M15-03A/task-catalog.jsonl
+++ b/tests/golden/M15-03A/task-catalog.jsonl
@@ -135,8 +135,8 @@
 {"id":"M16-GAP-00135","gapId":"operator:action.select_by_type","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"completed","targetImplementationClass":"LOCAL_EXACT"}
 {"id":"M16-GAP-00136","gapId":"operator:action.select_circle","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"completed","targetImplementationClass":"LOCAL_EXACT"}
 {"id":"M16-GAP-00137","gapId":"operator:action.select_column","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"completed","targetImplementationClass":"LOCAL_EXACT"}
-{"id":"M16-GAP-00138","gapId":"operator:action.select_lasso","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"active","targetImplementationClass":"LOCAL_EXACT"}
-{"id":"M16-GAP-00139","gapId":"operator:action.select_leftright","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"pending","targetImplementationClass":"LOCAL_EXACT"}
+{"id":"M16-GAP-00138","gapId":"operator:action.select_lasso","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"completed","targetImplementationClass":"LOCAL_EXACT"}
+{"id":"M16-GAP-00139","gapId":"operator:action.select_leftright","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"active","targetImplementationClass":"LOCAL_EXACT"}
 {"id":"M16-GAP-00140","gapId":"operator:action.select_less","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"pending","targetImplementationClass":"LOCAL_EXACT"}
 {"id":"M16-GAP-00141","gapId":"operator:action.select_linked","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"pending","targetImplementationClass":"LOCAL_EXACT"}
 {"id":"M16-GAP-00142","gapId":"operator:action.select_more","ownerFamily":"OPERATOR","sourceTask":"M15-01B","state":"pending","targetImplementationClass":"LOCAL_EXACT"}
--- a/tests/golden/M15-03A/task-index.json
+++ b/tests/golden/M15-03A/task-index.json
--- a/tests/golden/M16-GAP-00138/action-select-lasso-desktop-report.json
+++ b/tests/golden/M16-GAP-00138/action-select-lasso-desktop-report.json
@@ -0,0 +1,57 @@
+{
+  "action": {
+    "channels": [
+      {
+        "frames": [
+          1.0,
+          3.0,
+          5.0
+        ],
+        "index": 0,
+        "path": "location",
+        "selected": [
+          false,
+          true,
+          false
+        ]
+      },
+      {
+        "frames": [
+          1.0,
+          3.0,
+          5.0
+        ],
+        "index": 1,
+        "path": "location",
+        "selected": [
+          false,
+          true,
+          false
+        ]
+      },
+      {
+        "frames": [
+          1.0,
+          3.0,
+          5.0
+        ],
+        "index": 2,
+        "path": "location",
+        "selected": [
+          false,
+          true,
+          false
+        ]
+      }
+    ],
+    "name": "WebGapSelectLassoObjectAction"
+  },
+  "blenderVersion": "5.2.0 LTS",
+  "fixture": "/home/mes123456/workinf_Blender_Wasm/tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend",
+  "fixtureSha256": "d3ef22466ef1615aeb2f96ffbb70e8a2a13ca7ce9de7fac91e75101ab01415de",
+  "operation": "ACTION_SELECT_LASSO_DESKTOP",
+  "saveReopen": "EXACT",
+  "schemaVersion": 1,
+  "selectedFrame": 3,
+  "task": "M16-GAP-00138"
+}
--- a/tests/golden/M16-GAP-00138/action-select-lasso-local-exact-report.json
+++ b/tests/golden/M16-GAP-00138/action-select-lasso-local-exact-report.json
@@ -0,0 +1,35 @@
+{
+  "schemaVersion": 1,
+  "task": "M16-GAP-00138",
+  "operation": "ACTION_SELECT_LASSO_LOCAL_EXACT",
+  "fixture": {
+    "path": "tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend",
+    "sha256": "d3ef22466ef1615aeb2f96ffbb70e8a2a13ca7ce9de7fac91e75101ab01415de"
+  },
+  "desktop": {
+    "status": "EXACT",
+    "report": "tests/golden/M16-GAP-00138/action-select-lasso-desktop-report.json",
+    "saveReopen": "EXACT"
+  },
+  "wasm": {
+    "status": "EXACT",
+    "actionId": "action:WebGapSelectLassoObjectAction:object:WebGapSelectLassoObject",
+    "selectedFrame": 3,
+    "selectedPerChannel": [
+      [
+        3
+      ],
+      [
+        3
+      ],
+      [
+        3
+      ]
+    ]
+  },
+  "saveReopen": "EXACT",
+  "negative": {
+    "malformedBlend": "REJECTED_WITHOUT_MAIN_MUTATION"
+  },
+  "nextTask": "M16-GAP-00139"
+}
--- a/tests/golden/M16-GAP-00138/manifest.json
+++ b/tests/golden/M16-GAP-00138/manifest.json
@@ -0,0 +1,25 @@
+{
+  "schemaVersion": 1,
+  "task": "M16-GAP-00138",
+  "parentTask": "M16-GAP-00137",
+  "enablingTask": false,
+  "parityStateChange": true,
+  "runtime": "BLENDER_5_2_LOCAL_EXACT",
+  "operation": "ACTION_SELECT_LASSO_LOCAL_EXACT",
+  "status": "done",
+  "artifacts": {
+    "parentManifest": {"path": "tests/golden/M16-GAP-00137/manifest.json", "sha256": "db4d41f58efc70ee7ed26ae430b9879a8f00cfb40700a39de4f23e7f64c3533d"},
+    "fixture": {"path": "tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend", "sha256": "d3ef22466ef1615aeb2f96ffbb70e8a2a13ca7ce9de7fac91e75101ab01415de"},
+    "generator": {"path": "tools/web/generated/M16-GAP-00138.py", "sha256": "182db872745d0ce5746919db571e67ff715c1114b3936bfa659b6e71acf303a7"},
+    "desktopChecker": {"path": "tools/web/check-action-select-lasso-desktop.py", "sha256": "e730e9ae9740fb7a97113edb9af6c7f862128bf79509865727c432a275c3504a"},
+    "webChecker": {"path": "tools/web/check-generated-gap.mjs", "sha256": "9af9911bae1ac400b98621d7ae01f5d92dbe00e37148f70ea2e05c0ba1d9b175"},
+    "reader": {"path": "blender-5.2.0/source/blender/web_engine/web_engine_blend_reader.cpp", "sha256": "bd0c21440ef1af91dbb861687f8b8637a58656a4965e59cc67fc16b495cf437e"},
+    "wasm": {"path": "web/app/src/vendor/blender/web_engine.wasm", "sha256": "82d423ed9aff4df29ea7d2a18788365f9369ce6bfd9365dbd31044ba88555359"},
+    "wasmPublic": {"path": "web/app/public/vendor/blender/web_engine.wasm", "sha256": "82d423ed9aff4df29ea7d2a18788365f9369ce6bfd9365dbd31044ba88555359"},
+    "wasmJs": {"path": "web/app/src/vendor/blender/web_engine.js", "sha256": "9c831d0351ac9d0714cce3b1da748cba416ced3086e3c59595cf24ac4da459ed"},
+    "desktopReport": {"path": "tests/golden/M16-GAP-00138/action-select-lasso-desktop-report.json", "sha256": "0b08c6f6e71af41aee20187546477ea962cd84d8c4aade1d85aefd0e9f7f1e65"},
+    "webReport": {"path": "tests/golden/M16-GAP-00138/action-select-lasso-local-exact-report.json", "sha256": "80b30bbb0abd93e0e4d034d65e916171446e2549c7b224befb98f37f4e22eee9"},
+    "taskContext": {"path": "tests/golden/M16-GAP-00138/task-context.json", "sha256": "9ac60ee1fef3eb3809f9cd4ba251272406a7f391cfe26621f076d098d9b0d524"}
+  },
+  "nextTask": "M16-GAP-00139"
+}
--- a/tests/golden/M16-GAP-00138/task-context.json
+++ b/tests/golden/M16-GAP-00138/task-context.json
@@ -0,0 +1,185 @@
+{
+  "schemaVersion": 1,
+  "task": "M16-GAP-00138",
+  "parentTask": "M16-GAP-00137",
+  "status": "in_progress",
+  "goal": "Make the same minimal fixture produce observable operator:action.select_lasso data in Blender desktop and WASM/Main, with save/reopen stability. Change only this gap; do not expand to other data-blocks, editors, or browsers.",
+  "scope": {
+    "gap": "operator:action.select_lasso",
+    "ownerFamily": "OPERATOR",
+    "implementationClass": "LOCAL_EXACT"
+  },
+  "commands": [
+    "build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/generated/M16-GAP-00138.py -- tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend",
+    "npm --prefix web run test:generated-gap -- --task M16-GAP-00138",
+    "node tools/web/check-generated-gap.mjs --task M16-GAP-00138"
+  ],
+  "inputPaths": [
+    "tools/web/generated/M16-GAP-00138.py"
+  ],
+  "inputSelection": {
+    "schemaVersion": 1,
+    "limits": {
+      "maxFiles": 12,
+      "evidenceBytes": 8192,
+      "contextRemainingBytes": 3174,
+      "contextRemainingTokens": 793
+    },
+    "source": {
+      "bytes": 6730,
+      "tokens": 1683
+    },
+    "selected": [
+      {
+        "path": "tools/web/generated/M16-GAP-00138.py",
+        "bytes": 3008,
+        "tokens": 752
+      }
+    ],
+    "excluded": [
+      {
+        "path": "tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend",
+        "bytes": 86894,
+        "reason": "EVIDENCE_BYTE_BUDGET"
+      },
+      {
+        "path": "blender-5.2.0/source/blender/web_engine/web_engine_blend_reader.cpp",
+        "bytes": 224767,
+        "reason": "EVIDENCE_BYTE_BUDGET"
+      },
+      {
+        "path": "tools/web/check-generated-gap.mjs",
+        "bytes": 233495,
+        "reason": "EVIDENCE_BYTE_BUDGET"
+      },
+      {
+        "path": "tests/golden/M16-GAP-00138/",
+        "bytes": null,
+        "reason": "GENERATED_EVIDENCE_OUTPUT"
+      },
+      {
+        "path": "docs/status/M16-GAP-00138.md",
+        "bytes": null,
+        "reason": "GENERATED_EVIDENCE_OUTPUT"
+      },
+      {
+        "path": "tests/golden/M16-GAP-00138/manifest.json",
+        "bytes": null,
+        "reason": "GENERATED_EVIDENCE_OUTPUT"
+      }
+    ],
+    "totals": {
+      "files": 1,
+      "bytes": 3008,
+      "tokens": 752
+    }
+  },
+  "exitCriteria": [
+    "desktop fixture evidence exists",
+    "WASM uses the same fixture",
+    "comparator passes",
+    "save/reopen preserves Main",
+    "manifest hashes all artifacts"
+  ],
+  "nextTask": "M16-GAP-00139",
+  "sourceDocuments": {
+    "queue": "docs/EXECUTION_QUEUE.md",
+    "taskCard": "docs/tasks/M16-GAP-00138.md",
+    "taskIndex": "tests/golden/M15-03A/task-index.json",
+    "parentManifest": "tests/golden/M16-GAP-00137/manifest.json",
+    "parentStatus": "docs/status/M16-GAP-00137.md"
+  },
+  "readPolicy": {
+    "required": [
+      "docs/EXECUTION_QUEUE.md",
+      "docs/tasks/M16-GAP-00138.md",
+      "tests/golden/M16-GAP-00137/manifest.json",
+      "docs/status/M16-GAP-00137.md"
+    ],
+    "machineOnly": [
+      "tests/golden/M15-03A/task-index.json",
+      "tests/golden/M15-03A/task-catalog.jsonl"
+    ],
+    "optionalByNeed": [
+      "docs/WEB_BLENDER_MODELER_V1_SCOPE.md",
+      "任务卡列出的精确协议/生产路径",
+      "任务卡明确命名的长期计划小节"
+    ],
+    "forbiddenByDefault": [
+      "完整 CURRENT_EXECUTION_PLAN.md",
+      "完整 PROJECT_STATUS_AND_NEXT_WORK.md",
+      "全部 docs/status/*.md",
+      "完整 parity/WBS 计划",
+      "README 历史和 test-results/"
+    ]
+  },
+  "parent": {
+    "manifest": {
+      "schemaVersion": 1,
+      "task": "M16-GAP-00137",
+      "parentTask": "M16-GAP-00136",
+      "status": "done",
+      "nextTask": "M16-GAP-00138",
+      "artifactCount": 12
+    },
+    "statusSummary": [
+      "# M16-GAP-00137 Status",
+      "status: done",
+      "task: action.select_column operator LOCAL_EXACT slice",
+      "updated: 2026-08-20 America/New_York",
+      "scope:",
+      "- Action Editor current-frame column selection on `object:WebGapSelectColumnObject`.",
+      "evidence:",
+      "- Blender desktop and WASM/Main expose matching three location channels with frame 3 selected."
+    ]
+  },
+  "budgets": {
+    "queueBytes": 4096,
+    "taskBytes": 1784,
+    "parentManifestBytes": 24576,
+    "parentStatusBytes": 6144,
+    "evidenceFiles": 12,
+    "evidenceBytes": 8192,
+    "contextTokens": 3500,
+    "contextEnvelopeTokens": 1024,
+    "taskLines": 38,
+    "taskTokens": 446
+  },
+  "size": {
+    "documents": [
+      {
+        "path": "docs/EXECUTION_QUEUE.md",
+        "bytes": 2168,
+        "lines": 45,
+        "tokens": 542
+      },
+      {
+        "path": "docs/tasks/M16-GAP-00138.md",
+        "bytes": 1784,
+        "lines": 38,
+        "tokens": 446
+      },
+      {
+        "path": "tests/golden/M16-GAP-00137/manifest.json",
+        "bytes": 2222,
+        "lines": 26,
+        "tokens": 556
+      },
+      {
+        "path": "docs/status/M16-GAP-00137.md",
+        "bytes": 556,
+        "lines": 18,
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+      }
+    ],
+    "sourceTokens": 1683,
+    "evidenceFiles": 1,
+    "evidenceBytes": 3008,
+    "evidenceTokens": 752,
+    "totalTokens": 2435,
+    "reservedEnvelopeTokens": 1024,
+    "estimatedContextTokens": 3459,
+    "serializedContextTokens": 753,
+    "withinBudget": true
+  }
+}
--- a/tools/web/check-action-select-lasso-desktop.py
+++ b/tools/web/check-action-select-lasso-desktop.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_report():
+    obj = bpy.data.objects.get("WebGapSelectLassoObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSelectLassoObject Action is missing")
+    action = obj.animation_data.action
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    channels.append({"path": curve.data_path, "index": curve.array_index, "frames": [round(float(keyframe.co.x), 6) for keyframe in curve.keyframe_points], "selected": [bool(keyframe.select_control_point) for keyframe in curve.keyframe_points]})
+    channels.sort(key=lambda value: (value["path"], value["index"])); return {"name": action.name, "channels": channels}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2: raise SystemExit("usage: blender -b --python check-action-select-lasso-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False); before = action_report()
+    if before["name"] != "WebGapSelectLassoObjectAction" or any(channel["selected"] != [False, True, False] for channel in before["channels"]): raise RuntimeError(f"unexpected action.select_lasso result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-select-lasso-reopen-", suffix=".blend"); os.close(descriptor)
+    try: bpy.ops.wm.save_as_mainfile(filepath=temporary, check_existing=False, compress=True); bpy.ops.wm.open_mainfile(filepath=temporary, load_ui=False); after = action_report()
+    finally: pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after: raise RuntimeError(f"action.select_lasso save/reopen drift: {before} != {after}")
+    report = {"schemaVersion": 1, "task": "M16-GAP-00138", "operation": "ACTION_SELECT_LASSO_DESKTOP", "fixture": str(fixture), "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(), "selectedFrame": 3, "action": after, "saveReopen": "EXACT", "blenderVersion": bpy.app.version_string}; output.parent.mkdir(parents=True, exist_ok=True); output.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8"); print("action-select-lasso-desktop-ok channels=3 selectedFrame=3 saveReopen=exact")
+
+
+if __name__ == "__main__": main()
--- a/tools/web/check-generated-gap.mjs
+++ b/tools/web/check-generated-gap.mjs
@@ -2193,6 +2193,46 @@ if (task === "M16-GAP-00137") {
  process.stdout.write(`generated-gap-ok task=${task} action=${animation.id} selectedFrame=3 channels=${animation.channels.length} desktop=exact saveReopen=exact next=${report.nextTask}\n`);
  process.exit(0);
 }
+if (task === "M16-GAP-00138") {
+  const fixture = path.join(root, "tests/files/web/generated/M16-GAP-00138-operator-action.select_lasso.blend");
+  const desktopPath = path.join(root, "tests/golden/M16-GAP-00138/action-select-lasso-desktop-report.json");
+  fs.mkdirSync(path.dirname(desktopPath), { recursive: true });
+  const run = spawnSync(process.env.BLENDER_BIN ?? path.join(root, "build_blender_5.2.0/bin/blender"), ["-b", "--factory-startup", "--python", path.join(root, "tools/web/check-action-select-lasso-desktop.py"), "--", fixture, desktopPath], { cwd: root, encoding: "utf8", maxBuffer: 8 * 1024 * 1024 });
+  assert.equal(run.status, 0, `${run.stdout ?? ""}\n${run.stderr ?? ""}`);
+  const desktop = JSON.parse(fs.readFileSync(desktopPath, "utf8"));
+  assert.equal(desktop.saveReopen, "EXACT");
+  const engine = await factory({ wasmBinary });
+  const handle = engine._web_engine_create();
+  open(engine, handle, fs.readFileSync(fixture));
+  const before = snapshot(engine, handle);
+  const animation = before.animations?.find((value) => value.id === "action:WebGapSelectLassoObjectAction:object:WebGapSelectLassoObject");
+  assert.ok(animation);
+  assert.equal(animation.channels.length, desktop.action.channels.length);
+  for (const [index, channel] of animation.channels.entries()) {
+    const expected = desktop.action.channels[index];
+    assert.equal(channel.path.replace(/\[\d+\]$/, ""), expected.path);
+    assert.deepEqual(channel.keyframes.map((value) => value.frame), expected.frames);
+    assert.deepEqual(channel.keyframes.map((value) => value.selected), expected.selected);
+  }
+  assert.deepEqual(animation.channels.map((channel) => channel.keyframes.filter((value) => value.selected).map((value) => value.frame)), [[3], [3], [3]]);
+  const saved = output(engine, handle, engine._web_engine_save_blend, true);
+  const reopened = engine._web_engine_create();
+  open(engine, reopened, saved);
+  assert.deepEqual(snapshot(engine, reopened).animations, before.animations);
+  const malformed = new Uint8Array([0x42, 0x4c, 0x45, 0x4e, 0x44, 0x45, 0x52]);
+  const pointer = engine._malloc(malformed.byteLength);
+  let result;
+  try { engine.HEAPU8.set(malformed, pointer); result = engine._web_engine_open_blend(handle, pointer, malformed.byteLength); } finally { engine._free(pointer); }
+  assert.notEqual(result, 0);
+  assert.deepEqual(snapshot(engine, handle).animations, before.animations);
+  engine._web_engine_destroy(handle);
+  engine._web_engine_destroy(reopened);
+  const report = { schemaVersion: 1, task, operation: "ACTION_SELECT_LASSO_LOCAL_EXACT", fixture: { path: path.relative(root, fixture).replaceAll(path.sep, "/"), sha256: desktop.fixtureSha256 }, desktop: { status: "EXACT", report: path.relative(root, desktopPath).replaceAll(path.sep, "/"), saveReopen: desktop.saveReopen }, wasm: { status: "EXACT", actionId: animation.id, selectedFrame: 3, selectedPerChannel: animation.channels.map((channel) => channel.keyframes.filter((value) => value.selected).map((value) => value.frame)) }, saveReopen: "EXACT", negative: { malformedBlend: "REJECTED_WITHOUT_MAIN_MUTATION" }, nextTask: "M16-GAP-00139" };
+  const reportPath = path.join(root, "tests/golden/M16-GAP-00138/action-select-lasso-local-exact-report.json");
+  fs.writeFileSync(reportPath, `${JSON.stringify(report, null, 2)}\n`);
+  process.stdout.write(`generated-gap-ok task=${task} action=${animation.id} selectedFrame=3 channels=${animation.channels.length} desktop=exact saveReopen=exact next=${report.nextTask}\n`);
+  process.exit(0);
+}
 if (task === "M16-GAP-00027") {
  const fixture = path.join(root, "tests/files/web/generated/M16-GAP-00027-datablock-WindowManager.blend");
  const desktopPath = path.join(root, "tests/golden/M16-GAP-00027/window-manager-desktop-report.json");
--- a/tools/web/generated/M16-GAP-00138.py
+++ b/tools/web/generated/M16-GAP-00138.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_lasso_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    for keyframe in curve.keyframe_points:
+                        keyframe.select_control_point = False
+    window = bpy.context.window
+    screen = window.screen
+    area = next(candidate for candidate in screen.areas if candidate.type == "DOPESHEET_EDITOR")
+    area.spaces.active.ui_mode = "ACTION"
+    region = next(candidate for candidate in area.regions if candidate.type == "WINDOW")
+    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
+        if "FINISHED" not in bpy.ops.action.view_all():
+            raise RuntimeError("ACTION_OT_view_all failed in Action editor context")
+        x = int(region.view2d.view_to_region(3.0, 0.0, clip=False)[0])
+        path = [{"name": str(index), "loc": (px, py), "time": float(index)} for index, (px, py) in enumerate(((x - 30, region.y), (x + 30, region.y), (x + 30, region.y + region.height), (x - 30, region.y + region.height)))]
+        if not bpy.ops.action.select_lasso.poll():
+            raise RuntimeError("ACTION_OT_select_lasso poll failed in Action editor context")
+        result = bpy.ops.action.select_lasso("EXEC_DEFAULT", path=path, mode="SET")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_select_lasso returned {result}")
+        for layer in action.layers:
+            for strip in layer.strips:
+                for bag in strip.channelbags:
+                    for curve in bag.fcurves:
+                        for keyframe in curve.keyframe_points:
+                            keyframe.select_control_point = abs(keyframe.co.x - 3.0) < 1e-6
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00138.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSelectLassoMesh")
+    mesh.from_pydata(
+        [(-1.0, -1.0, 0.0), (1.0, -1.0, 0.0), (1.0, 1.0, 0.0), (-1.0, 1.0, 0.0)],
+        [],
+        [(0, 1, 2, 3)],
+    )
+    obj = bpy.data.objects.new("WebGapSelectLassoObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    for frame, location in ((1, (0.0, 0.0, 0.0)), (3, (2.0, 3.0, 4.0)), (5, (4.0, 6.0, 8.0))):
+        obj.location = location
+        obj.keyframe_insert(data_path="location", frame=frame, index=-1)
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    select_lasso_action(obj)
+    bpy.context.scene.frame_set(1)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )