Capture M16 gap execution artifacts

tools/web/check-action-change-frame-desktop.py

@@ -0,0 +1,72 @@
+#!/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("WebGapAnimChangeFrameObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChangeFrameObject 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-change-frame-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 bpy.context.scene.frame_current != 4:
+        raise RuntimeError(f"unexpected anim.change_frame frame: {bpy.context.scene.frame_current}")
+    if before["name"] != "WebGapAnimChangeFrameObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.change_frame action: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-change-frame-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()
+        frame_after = bpy.context.scene.frame_current
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after or frame_after != 4:
+        raise RuntimeError("anim.change_frame save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00150",
+        "operation": "ANIM_CHANGE_FRAME_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "changedToFrame": 4,
+        "currentFrame": frame_after,
+        "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("anim-change-frame-desktop-ok changedToFrame=4 channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channel-select-keys-desktop.py

@@ -0,0 +1,69 @@
+#!/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("WebGapAnimChannelSelectKeysObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelSelectKeysObject 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-channel-select-keys-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()
+    expected = [[True, True, True], [False, False, False], [False, False, False]]
+    if before["name"] != "WebGapAnimChannelSelectKeysObjectAction" or [channel["selected"] for channel in before["channels"]] != expected:
+        raise RuntimeError(f"unexpected anim.channel_select_keys result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channel-select-keys-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("anim.channel_select_keys save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00151",
+        "operation": "ANIM_CHANNEL_SELECT_KEYS_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selectedChannel": {"path": "location", "index": 0},
+        "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("anim-channel-select-keys-desktop-ok selected=location[0] channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channel-view-pick-desktop.py

@@ -0,0 +1,104 @@
+#!/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("WebGapAnimChannelViewPickObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelViewPickObject 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],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def view_report():
+    area = None
+    for screen in bpy.data.screens:
+        area = next(
+            (candidate for candidate in screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION" and candidate.height >= 200),
+            None,
+        )
+        if area is not None:
+            break
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    xmin, ymin = region.view2d.region_to_view(0, 0)
+    xmax, ymax = region.view2d.region_to_view(region.width - 1, region.height - 1)
+    return {
+        "cur": {
+            "xmin": round(float(xmin), 6),
+            "xmax": round(float(xmax), 6),
+            "ymin": round(float(ymin), 6),
+            "ymax": round(float(ymax), 6),
+        },
+        "mask": {
+            "xmin": 0,
+            "xmax": int(region.width - 1),
+            "ymin": 0,
+            "ymax": int(region.height - 1),
+        },
+    }
+
+
+def report_state():
+    return {"action": action_report(), "view2d": view_report()}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channel-view-pick-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = report_state()
+    if before["action"]["name"] != "WebGapAnimChannelViewPickObjectAction":
+        raise RuntimeError(f"unexpected anim.channel_view_pick action: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channel-view-pick-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=True)
+        after = report_state()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channel_view_pick save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00152",
+        "operation": "ANIM_CHANNEL_VIEW_PICK_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "action": after["action"],
+        "view2d": after["view2d"],
+        "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("anim-channel-view-pick-desktop-ok view2d=exact saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-bake-desktop.py

@@ -0,0 +1,69 @@
+#!/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("WebGapAnimChannelsBakeObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsBakeObject 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],
+                    })
+    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-channels-bake-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()
+    expected = [1.0, 2.0, 3.0, 4.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsBakeObjectAction" or len(before["channels"]) != 3 or any(channel["frames"] != expected for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_bake result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-bake-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("anim.channels_bake save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00153",
+        "operation": "ANIM_CHANNELS_BAKE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "bakeRange": [1, 5],
+        "step": 1.0,
+        "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("anim-channels-bake-desktop-ok range=1..5 step=1 channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-clean-empty-desktop.py

@@ -0,0 +1,78 @@
+#!/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("WebGapAnimChannelsCleanKeepObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsCleanKeepObject 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],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def state_report():
+    empty = bpy.data.objects.get("WebGapAnimChannelsCleanEmptyObject")
+    keep = bpy.data.objects.get("WebGapAnimChannelsCleanKeepObject")
+    if empty is None or keep is None:
+        raise RuntimeError("clean-empty fixture objects are missing")
+    return {
+        "emptyAnimData": empty.animation_data is not None,
+        "keepAction": action_report(),
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-clean-empty-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 = state_report()
+    if before["emptyAnimData"] or len(before["keepAction"]["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_clean_empty result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-clean-empty-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 = state_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channels_clean_empty save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00154",
+        "operation": "ANIM_CHANNELS_CLEAN_EMPTY_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "emptyAnimDataRemoved": True,
+        "keepAction": after["keepAction"],
+        "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("anim-channels-clean-empty-desktop-ok removedEmpty=true keepChannels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-click-desktop.py

@@ -0,0 +1,69 @@
+#!/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("WebGapAnimChannelsClickObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsClickObject 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-channels-click-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()
+    expected = [[True, True, True], [False, False, False], [False, False, False]]
+    if before["name"] != "WebGapAnimChannelsClickObjectAction" or [channel["selected"] for channel in before["channels"]] != expected:
+        raise RuntimeError(f"unexpected anim.channels_click result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-click-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("anim.channels_click save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00155",
+        "operation": "ANIM_CHANNELS_CLICK_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "clickedChannel": {"path": "location", "index": 0},
+        "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("anim-channels-click-desktop-ok selected=location[0] channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-collapse-desktop.py

@@ -0,0 +1,68 @@
+#!/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("WebGapAnimChannelsCollapseObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsCollapseObject 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],
+                    })
+    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-channels-collapse-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsCollapseObjectAction" or len(before["channels"]) != 3 or any(channel["frames"] != expected for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_collapse result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-collapse-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("anim.channels_collapse save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00156",
+        "operation": "ANIM_CHANNELS_COLLAPSE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "collapsedAll": True,
+        "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("anim-channels-collapse-desktop-ok collapsedAll=true channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-delete-desktop.py

@@ -0,0 +1,68 @@
+#!/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("WebGapAnimChannelsDeleteObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsDeleteObject 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],
+                    })
+    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-channels-delete-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"] != "WebGapAnimChannelsDeleteObjectAction" or before["channels"]:
+        raise RuntimeError(f"unexpected anim.channels_delete result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-delete-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("anim.channels_delete save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00157",
+        "operation": "ANIM_CHANNELS_DELETE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "deletedChannel": {"path": "location", "index": 0},
+        "remainingChannels": 0,
+        "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("anim-channels-delete-desktop-ok deleted=location[0] remaining=2 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-editable-toggle-desktop.py

@@ -0,0 +1,71 @@
+#!/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("WebGapAnimChannelsEditableToggleObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsEditableToggleObject 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],
+                        "editable": not curve.lock,
+                    })
+    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-channels-editable-toggle-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsEditableToggleObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_editable_toggle result: {before}")
+    if any(channel["frames"] != expected or channel["editable"] for channel in before["channels"]):
+        raise RuntimeError(f"channels were not toggled non-editable: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-editable-toggle-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("anim.channels_editable_toggle save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00158",
+        "operation": "ANIM_CHANNELS_EDITABLE_TOGGLE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "toggledChannels": 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("anim-channels-editable-toggle-desktop-ok toggled=3 editable=false saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-expand-desktop.py

@@ -0,0 +1,74 @@
+#!/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("WebGapAnimChannelsExpandObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsExpandObject Action is missing")
+    action = obj.animation_data.action
+    groups = []
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                groups.extend({"name": group.name, "expanded": group.show_expanded} for group in bag.groups)
+                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],
+                        "group": curve.group.name if curve.group else None,
+                    })
+    groups.sort(key=lambda value: value["name"])
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "groups": groups, "channels": channels}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-expand-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsExpandObjectAction" or before["groups"] != [{"name": "Object Transforms", "expanded": True}]:
+        raise RuntimeError(f"unexpected anim.channels_expand groups: {before}")
+    if len(before["channels"]) != 3 or any(channel["frames"] != expected or channel["group"] != "Object Transforms" for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_expand channels: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-expand-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("anim.channels_expand save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00159",
+        "operation": "ANIM_CHANNELS_EXPAND_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "expandedGroups": 1,
+        "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("anim-channels-expand-desktop-ok expanded=Object Transforms saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-fcurves-enable-desktop.py

@@ -0,0 +1,71 @@
+#!/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("WebGapAnimChannelsFCurvesEnableObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsFCurvesEnableObject 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],
+                        "enabled": curve.is_valid,
+                    })
+    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-channels-fcurves-enable-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsFCurvesEnableObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_fcurves_enable result: {before}")
+    if any(channel["frames"] != expected or not channel["enabled"] for channel in before["channels"]):
+        raise RuntimeError(f"F-Curves were not enabled: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-fcurves-enable-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("anim.channels_fcurves_enable save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00160",
+        "operation": "ANIM_CHANNELS_FCURVES_ENABLE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "enabledChannels": 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("anim-channels-fcurves-enable-desktop-ok enabled=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-group-desktop.py

@@ -0,0 +1,73 @@
+#!/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("WebGapAnimChannelsGroupObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsGroupObject Action is missing")
+    action = obj.animation_data.action
+    groups = []
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                groups.extend(group.name for group in bag.groups)
+                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],
+                        "group": curve.group.name if curve.group else None,
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "groups": sorted(groups), "channels": channels}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-group-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsGroupObjectAction" or before["groups"] != ["WebGapTransforms"]:
+        raise RuntimeError(f"unexpected anim.channels_group groups: {before}")
+    if len(before["channels"]) != 3 or any(channel["frames"] != expected or channel["group"] != "WebGapTransforms" for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_group channels: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-group-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("anim.channels_group save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00161",
+        "operation": "ANIM_CHANNELS_GROUP_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "groups": 1,
+        "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("anim-channels-group-desktop-ok group=WebGapTransforms channels=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-move-desktop.py

@@ -0,0 +1,69 @@
+#!/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("WebGapAnimChannelsMoveObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsMoveObject 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],
+                    })
+    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-channels-move-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsMoveObjectAction" or [channel["index"] for channel in before["channels"]] != [1, 0, 2]:
+        raise RuntimeError(f"unexpected anim.channels_move order: {before}")
+    if any(channel["frames"] != expected for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_move frames: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-move-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("anim.channels_move save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00162",
+        "operation": "ANIM_CHANNELS_MOVE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "direction": "DOWN",
+        "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("anim-channels-move-desktop-ok direction=DOWN order=1,0,2 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-rename-desktop.py

@@ -0,0 +1,81 @@
+#!/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("WebGapAnimChannelsRenameObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsRenameObject 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],
+                        "enabled": curve.is_valid,
+                    })
+    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-channels-rename-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)
+    bpy.context.view_layer.update()
+    before = action_report()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsRenameObjectAction":
+        raise RuntimeError(f"unexpected anim.channels_rename action: {before}")
+    if [channel["path"] for channel in before["channels"]] != [
+        "rotation_euler", "location_missing", "location_missing"
+    ]:
+        raise RuntimeError(f"unexpected anim.channels_rename paths: {before}")
+    if [channel["index"] for channel in before["channels"]] != [0, 1, 2]:
+        raise RuntimeError(f"unexpected anim.channels_rename indices: {before}")
+    if any(channel["frames"] != expected for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_rename frames: {before}")
+    # Blender recomputes the transient F-Curve error flag while loading a
+    # file, so the persisted evidence is the renamed RNA path and keyframes.
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-rename-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)
+        bpy.context.view_layer.update()
+        after = action_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channels_rename save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00163",
+        "operation": "ANIM_CHANNELS_RENAME_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "renamedChannel": {"from": "location_missing", "to": "rotation_euler", "index": 0},
+        "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("anim-channels-rename-desktop-ok path=rotation_euler index=0 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-select-all-desktop.py

@@ -0,0 +1,80 @@
+#!/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("WebGapAnimChannelsSelectAllObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSelectAllObject 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(curve.select),
+                        "selectedKeyframes": [bool(keyframe.select_control_point) for keyframe in curve.keyframe_points],
+                    })
+    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-channels-select-all-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsSelectAllObjectAction":
+        raise RuntimeError(f"unexpected anim.channels_select_all action: {before}")
+    if [channel["path"] for channel in before["channels"]] != ["location", "location", "location"]:
+        raise RuntimeError(f"unexpected anim.channels_select_all paths: {before}")
+    if [channel["index"] for channel in before["channels"]] != [0, 1, 2]:
+        raise RuntimeError(f"unexpected anim.channels_select_all indices: {before}")
+    if any(channel["frames"] != expected for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_select_all frames: {before}")
+    if not all(channel["selected"] for channel in before["channels"]):
+        raise RuntimeError(f"not all animation channels were selected: {before}")
+    if any(any(channel["selectedKeyframes"]) for channel in before["channels"]):
+        raise RuntimeError(f"channels_select_all changed keyframe selection: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-select-all-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("anim.channels_select_all save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00164",
+        "operation": "ANIM_CHANNELS_SELECT_ALL_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selection": "SELECT",
+        "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("anim-channels-select-all-desktop-ok selected=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-select-box-desktop.py

@@ -0,0 +1,82 @@
+#!/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("WebGapAnimChannelsSelectBoxObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSelectBoxObject 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(curve.select),
+                        "selectedKeyframes": [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-channels-select-box-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()
+    expected_frames = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsSelectBoxObjectAction":
+        raise RuntimeError(f"unexpected anim.channels_select_box action: {before}")
+    if [channel["path"] for channel in before["channels"]] != ["location", "location", "location"]:
+        raise RuntimeError(f"unexpected anim.channels_select_box paths: {before}")
+    if [channel["index"] for channel in before["channels"]] != [0, 1, 2]:
+        raise RuntimeError(f"unexpected anim.channels_select_box indices: {before}")
+    if any(channel["frames"] != expected_frames for channel in before["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_select_box frames: {before}")
+    if not all(channel["selected"] for channel in before["channels"]):
+        raise RuntimeError(f"not all animation channels were selected: {before}")
+    if any(any(channel["selectedKeyframes"]) for channel in before["channels"]):
+        raise RuntimeError(f"channels_select_box changed keyframe selection: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-select-box-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("anim.channels_select_box save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00165",
+        "operation": "ANIM_CHANNELS_SELECT_BOX_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selection": "SELECT",
+        "selectedChannels": len(after["channels"]),
+        "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("anim-channels-select-box-desktop-ok selected=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-select-filter-desktop.py

@@ -0,0 +1,84 @@
+#!/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("WebGapAnimChannelsSelectFilterObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSelectFilterObject 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],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def filter_text():
+    for screen in bpy.data.screens:
+        area = next(
+            (candidate for candidate in screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION"),
+            None,
+        )
+        if area is not None:
+            return area.spaces.active.dopesheet.filter_fcurve_name
+    raise RuntimeError("Action Editor area is missing")
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-select-filter-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = {"filterText": filter_text(), "action": action_report()}
+    if before["filterText"] != "Location":
+        raise RuntimeError(f"unexpected anim.channels_select_filter text: {before}")
+    if before["action"]["name"] != "WebGapAnimChannelsSelectFilterObjectAction":
+        raise RuntimeError(f"unexpected anim.channels_select_filter action: {before}")
+    if len(before["action"]["channels"]) != 3 or any(channel["frames"] != [1.0, 3.0, 5.0] for channel in before["action"]["channels"]):
+        raise RuntimeError(f"unexpected anim.channels_select_filter channels: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-select-filter-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=True)
+        after = {"filterText": filter_text(), "action": action_report()}
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channels_select_filter save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00166",
+        "operation": "ANIM_CHANNELS_SELECT_FILTER_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "filterText": after["filterText"],
+        "action": after["action"],
+        "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("anim-channels-select-filter-desktop-ok filter=Location saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-setting-disable-desktop.py

@@ -0,0 +1,73 @@
+#!/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("WebGapAnimChannelsSettingDisableObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSettingDisableObject 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],
+                        "editable": not curve.lock,
+                    })
+    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-channels-setting-disable-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsSettingDisableObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_setting_disable action: {before}")
+    if any(channel["frames"] != expected or channel["editable"] for channel in before["channels"]):
+        raise RuntimeError(f"channels were not disabled/protected: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-setting-disable-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("anim.channels_setting_disable save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00167",
+        "operation": "ANIM_CHANNELS_SETTING_DISABLE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "setting": "PROTECT",
+        "disabledChannels": len(after["channels"]),
+        "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("anim-channels-setting-disable-desktop-ok setting=PROTECT disabled=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-setting-enable-desktop.py

@@ -0,0 +1,73 @@
+#!/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("WebGapAnimChannelsSettingEnableObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSettingEnableObject 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],
+                        "editable": not curve.lock,
+                    })
+    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-channels-setting-enable-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsSettingEnableObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_setting_enable action: {before}")
+    if any(channel["frames"] != expected or channel["editable"] for channel in before["channels"]):
+        raise RuntimeError(f"channels were not enabled/protected: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-setting-enable-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("anim.channels_setting_enable save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00168",
+        "operation": "ANIM_CHANNELS_SETTING_ENABLE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "setting": "PROTECT",
+        "enabledChannels": len(after["channels"]),
+        "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("anim-channels-setting-enable-desktop-ok setting=PROTECT enabled=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-setting-toggle-desktop.py

@@ -0,0 +1,73 @@
+#!/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("WebGapAnimChannelsSettingToggleObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsSettingToggleObject 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],
+                        "editable": not curve.lock,
+                    })
+    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-channels-setting-toggle-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsSettingToggleObjectAction" or len(before["channels"]) != 3:
+        raise RuntimeError(f"unexpected anim.channels_setting_toggle action: {before}")
+    if any(channel["frames"] != expected or channel["editable"] for channel in before["channels"]):
+        raise RuntimeError(f"channels were not toggled to protected: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-setting-toggle-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("anim.channels_setting_toggle save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00169",
+        "operation": "ANIM_CHANNELS_SETTING_TOGGLE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "setting": "PROTECT",
+        "toggledChannels": len(after["channels"]),
+        "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("anim-channels-setting-toggle-desktop-ok setting=PROTECT toggled=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-ungroup-desktop.py

@@ -0,0 +1,75 @@
+#!/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("WebGapAnimChannelsUngroupObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsUngroupObject Action is missing")
+    action = obj.animation_data.action
+    groups = []
+    channels = []
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                groups.extend(group.name for group in bag.groups)
+                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],
+                        "group": curve.group.name if curve.group else None,
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "groups": sorted(groups), "channels": channels}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-ungroup-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()
+    expected = [1.0, 3.0, 5.0]
+    if before["name"] != "WebGapAnimChannelsUngroupObjectAction" or before["groups"]:
+        raise RuntimeError(f"unexpected anim.channels_ungroup groups: {before}")
+    if len(before["channels"]) != 3 or any(channel["frames"] != expected or channel["group"] is not None for channel in before["channels"]):
+        raise RuntimeError(f"channels were not ungrouped: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-ungroup-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("anim.channels_ungroup save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00170",
+        "operation": "ANIM_CHANNELS_UNGROUP_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "groups": len(after["groups"]),
+        "ungroupedChannels": len(after["channels"]),
+        "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("anim-channels-ungroup-desktop-ok groups=0 ungrouped=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-channels-view-selected-desktop.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_report(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(curve.select),
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {"name": action.name, "channels": channels}
+
+
+def view_report():
+    area = None
+    for screen in bpy.data.screens:
+        area = next(
+            (candidate for candidate in screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION"),
+            None,
+        )
+        if area is not None:
+            break
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    view = region.view2d
+    xmin, ymin = view.region_to_view(0, 0)
+    xmax, ymax = view.region_to_view(region.width - 1, region.height - 1)
+    return {
+        "areaType": area.type,
+        "uiMode": area.spaces.active.ui_mode,
+        "view2d": {
+            "cur": {
+                "xmin": round(float(xmin), 6),
+                "xmax": round(float(xmax), 6),
+                "ymin": round(float(ymin), 6),
+                "ymax": round(float(ymax), 6),
+            },
+            "mask": {
+                "xmin": 0,
+                "xmax": int(region.width - 1),
+                "ymin": 0,
+                "ymax": int(region.height - 1),
+            },
+        },
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-channels-view-selected-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    obj = bpy.data.objects.get("WebGapAnimChannelsViewSelectedObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapAnimChannelsViewSelectedObject Action is missing")
+    before = {"action": action_report(obj.animation_data.action), **view_report()}
+    expected = [1.0, 3.0, 5.0]
+    if before["action"]["name"] != "WebGapAnimChannelsViewSelectedObjectAction":
+        raise RuntimeError(f"unexpected anim.channels_view_selected action: {before}")
+    if len(before["action"]["channels"]) != 3 or any(channel["frames"] != expected or not channel["selected"] for channel in before["action"]["channels"]):
+        raise RuntimeError(f"channels were not selected: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-channels-view-selected-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=True)
+        reopened_obj = bpy.data.objects.get("WebGapAnimChannelsViewSelectedObject")
+        after = {"action": action_report(reopened_obj.animation_data.action), **view_report()}
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.channels_view_selected save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00171",
+        "operation": "ANIM_CHANNELS_VIEW_SELECTED_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selectedChannels": len(after["action"]["channels"]),
+        "action": after["action"],
+        "view2d": after["view2d"],
+        "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("anim-channels-view-selected-desktop-ok selected=3 view2d=exact saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-clear-useless-actions-desktop.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_report(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],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return {
+        "name": action.name,
+        "users": action.users,
+        "fakeUser": bool(action.use_fake_user),
+        "channels": channels,
+    }
+
+
+def state_report():
+    actions = {
+        action.name: action_report(action)
+        for action in bpy.data.actions
+        if action.name.startswith("WebGapAnimClearUseless")
+    }
+    used = bpy.data.objects.get("WebGapAnimClearUselessUsedObject")
+    if used is None or used.animation_data is None or used.animation_data.action is None:
+        raise RuntimeError("used Action is missing")
+    return {"actions": actions, "usedAction": used.animation_data.action.name}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-clear-useless-actions-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 = state_report()
+    expected = {
+        "WebGapAnimClearUselessUsedAction",
+        "WebGapAnimClearUselessLibraryAction",
+    }
+    if set(before["actions"]) != expected:
+        raise RuntimeError(f"clear_useless_actions did not remove only the empty Action: {before}")
+    if before["usedAction"] != "WebGapAnimClearUselessUsedAction":
+        raise RuntimeError(f"used Action drifted: {before}")
+    if any(len(value["channels"]) != 3 for value in before["actions"].values()):
+        raise RuntimeError(f"preserved Actions have unexpected curves: {before}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-clear-useless-actions-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 = state_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.clear_useless_actions save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00172",
+        "operation": "ANIM_CLEAR_USELESS_ACTIONS_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "removedEmptyAction": True,
+        "actions": after["actions"],
+        "usedAction": after["usedAction"],
+        "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("anim-clear-useless-actions-desktop-ok removedEmpty=true preserved=2 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-copy-driver-button-desktop.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def driver_report(obj):
+    if obj is None or obj.animation_data is None:
+        raise RuntimeError("copy-driver fixture animation data is missing")
+    drivers = []
+    for curve in obj.animation_data.drivers:
+        driver = curve.driver
+        drivers.append({
+            "path": curve.data_path,
+            "index": curve.array_index,
+            "expression": driver.expression if driver else "",
+            "type": driver.type if driver else "",
+            "variableCount": len(driver.variables) if driver else 0,
+        })
+    drivers.sort(key=lambda value: (value["path"], value["index"]))
+    return drivers
+
+
+def state_report():
+    obj = bpy.data.objects.get("WebGapAnimCopyDriverButtonObject")
+    if obj is None:
+        raise RuntimeError("copy-driver fixture object is missing")
+    return {"drivers": driver_report(obj), "value": round(float(obj["drive_target"]), 6)}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-copy-driver-button-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    output.unlink(missing_ok=True)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    before = state_report()
+    expected = [{
+        "path": '["drive_target"]',
+        "index": 0,
+        "expression": "frame * 2.0 + 1.0",
+        "type": "SCRIPTED",
+        "variableCount": 0,
+    }]
+    if before["drivers"] != expected:
+        raise RuntimeError(f"unexpected copy_driver_button source driver: {before}")
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(candidate for candidate in screen.areas if candidate.type == "PROPERTIES")
+    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):
+        result = bpy.ops.anim.copy_driver_button()
+    if result != {"CANCELLED"}:
+        raise RuntimeError(f"unexpected ANIM_OT_copy_driver_button result: {result}")
+    after_cancel = state_report()
+    if after_cancel != before:
+        raise RuntimeError(f"copy_driver_button cancellation changed Main data: {before} != {after_cancel}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-copy-driver-button-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 = state_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.copy_driver_button save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00173",
+        "operation": "ANIM_COPY_DRIVER_BUTTON_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "drivers": after["drivers"],
+        "value": after["value"],
+        "operatorStatus": "CANCELLED",
+        "mainMutation": "NONE",
+        "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(f"anim-copy-driver-button-desktop-ok drivers=1 status={report['operatorStatus']} mainMutation=none saveReopen=exact")
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"anim-copy-driver-button-desktop-failed: {error}")
+        raise SystemExit(1)

tools/web/check-action-driver-button-add-desktop.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def driver_report(obj):
+    if obj is None or obj.animation_data is None:
+        return []
+    drivers = []
+    for curve in obj.animation_data.drivers:
+        driver = curve.driver
+        drivers.append(
+            {
+                "path": curve.data_path,
+                "index": curve.array_index,
+                "expression": driver.expression if driver else "",
+                "type": driver.type if driver else "",
+                "variableCount": len(driver.variables) if driver else 0,
+            }
+        )
+    drivers.sort(key=lambda value: (value["path"], value["index"]))
+    return drivers
+
+
+def state_report(obj):
+    if obj is None:
+        raise RuntimeError("driver-button-add fixture object is missing")
+    return {"drivers": driver_report(obj), "value": round(float(obj["drive_target"]), 6)}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit(
+            "usage: blender -b --python check-action-driver-button-add-desktop.py -- FIXTURE REPORT"
+        )
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    output.unlink(missing_ok=True)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    obj = bpy.data.objects.get("WebGapAnimDriverButtonAddObject")
+    before = state_report(obj)
+    if before != {"drivers": [], "value": 4.5}:
+        raise RuntimeError(f"unexpected driver_button_add source state: {before}")
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(candidate for candidate in screen.areas if candidate.type == "PROPERTIES")
+    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):
+        poll = bool(bpy.ops.anim.driver_button_add.poll())
+    if poll:
+        raise RuntimeError("ANIM_OT_driver_button_add unexpectedly polled true without an active RNA button")
+    after_cancel = state_report(obj)
+    if after_cancel != before:
+        raise RuntimeError(f"driver_button_add cancellation changed Main data: {before} != {after_cancel}")
+
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-anim-driver-button-add-reopen-", suffix=".blend")
+    os.close(descriptor)
+    pathlib.Path(temporary).unlink(missing_ok=True)
+    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 = state_report(bpy.data.objects.get("WebGapAnimDriverButtonAddObject"))
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError("anim.driver_button_add save/reopen drift")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00174",
+        "operation": "ANIM_DRIVER_BUTTON_ADD_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "drivers": after["drivers"],
+        "value": after["value"],
+        "poll": poll,
+        "operatorStatus": "CANCELLED",
+        "mainMutation": "NONE",
+        "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("anim-driver-button-add-desktop-ok poll=false status=CANCELLED mainMutation=none saveReopen=exact")
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as error:
+        print(f"anim-driver-button-add-desktop-failed: {error}")
+        raise SystemExit(1)

tools/web/check-action-select-leftright-desktop.py

@@ -0,0 +1,71 @@
+#!/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("WebGapSelectLeftRightObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSelectLeftRightObject 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-leftright-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"] != "WebGapSelectLeftRightObjectAction" or any(
+        channel["selected"] != [True, True, False] for channel in before["channels"]
+    ):
+        raise RuntimeError(f"unexpected action.select_leftright result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-select-leftright-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_leftright save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00139",
+        "operation": "ACTION_SELECT_LEFTRIGHT_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "mode": "LEFT",
+        "selectedFrames": [1, 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-leftright-desktop-ok channels=3 mode=left selectedFrames=1,3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-select-less-desktop.py

@@ -0,0 +1,70 @@
+#!/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("WebGapSelectLessObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSelectLessObject 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-less-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"] != "WebGapSelectLessObjectAction" or any(
+        channel["selected"] != [False, True, False] for channel in before["channels"]
+    ):
+        raise RuntimeError(f"unexpected action.select_less result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-select-less-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_less save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00140",
+        "operation": "ACTION_SELECT_LESS_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-less-desktop-ok channels=3 selectedFrame=3 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-select-linked-desktop.py

@@ -0,0 +1,70 @@
+#!/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("WebGapSelectLinkedObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSelectLinkedObject 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-linked-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()
+    expected = [[True, True, True], [True, True, True], [True, True, True]]
+    if before["name"] != "WebGapSelectLinkedObjectAction" or [channel["selected"] for channel in before["channels"]] != expected:
+        raise RuntimeError(f"unexpected action.select_linked result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-select-linked-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_linked save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00141",
+        "operation": "ACTION_SELECT_LINKED_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selectedChannel": "location[0]",
+        "selectedFrames": [1, 3, 5],
+        "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-linked-desktop-ok channels=3 selectedChannel=location[0] selectedFrames=1,3,5 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-select-more-desktop.py

@@ -0,0 +1,70 @@
+#!/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("WebGapSelectMoreObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSelectMoreObject 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-more-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()
+    expected = [[True, True, True], [True, True, True], [True, True, True]]
+    if before["name"] != "WebGapSelectMoreObjectAction" or [channel["selected"] for channel in before["channels"]] != expected:
+        raise RuntimeError(f"unexpected action.select_more result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-select-more-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_more save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00142",
+        "operation": "ACTION_SELECT_MORE_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selectedChannel": "location[0]",
+        "selectedPerChannel": [[1, 3, 5], [1, 3, 5], [1, 3, 5]],
+        "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-more-desktop-ok channels=3 selectedChannel=location[0] selectedFrames=1,3,5 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-snap-desktop.py

@@ -0,0 +1,71 @@
+#!/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("WebGapSnapObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapSnapObject 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-snap-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()
+    expected_frames = [[1.0, 4.0, 5.0]] * 3
+    expected_selected = [[False, True, False]] * 3
+    if before["name"] != "WebGapSnapObjectAction" or [channel["frames"] for channel in before["channels"]] != expected_frames or [channel["selected"] for channel in before["channels"]] != expected_selected:
+        raise RuntimeError(f"unexpected action.snap result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-snap-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.snap save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00143",
+        "operation": "ACTION_SNAP_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "type": "CFRA",
+        "currentFrame": 4,
+        "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-snap-desktop-ok channels=3 type=CFRA currentFrame=4 saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-stash-and-create-desktop.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def nla_report():
+    obj = bpy.data.objects.get("WebGapStashCreateObject")
+    if obj is None or obj.animation_data is None:
+        raise RuntimeError("WebGapStashCreateObject animation data is missing")
+    tracks = []
+    for track in obj.animation_data.nla_tracks:
+        tracks.append({"name": track.name, "strips": [{"name": strip.name, "action": strip.action.name if strip.action else None, "frameStart": round(float(strip.frame_start), 6), "frameEnd": round(float(strip.frame_end), 6)} for strip in track.strips]})
+    return {"activeAction": obj.animation_data.action.name if obj.animation_data.action else None, "tracks": tracks}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-stash-and-create-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 = nla_report()
+    if before["activeAction"] != "Action" or len(before["tracks"]) != 1 or len(before["tracks"][0]["strips"]) != 1:
+        raise RuntimeError(f"unexpected action.stash_and_create result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-stash-create-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 = nla_report()
+    finally: pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after: raise RuntimeError(f"action.stash_and_create save/reopen drift: {before} != {after}")
+    report = {"schemaVersion": 1, "task": "M16-GAP-00145", "operation": "ACTION_STASH_AND_CREATE_DESKTOP", "fixture": str(fixture), "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(), "nla": 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-stash-and-create-desktop-ok tracks=1 strips=1 activeAction=Action saveReopen=exact")
+
+
+if __name__ == "__main__": main()

tools/web/check-action-stash-desktop.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def nla_report():
+    obj = bpy.data.objects.get("WebGapStashObject")
+    if obj is None or obj.animation_data is None:
+        raise RuntimeError("WebGapStashObject animation data is missing")
+    tracks = []
+    for track in obj.animation_data.nla_tracks:
+        tracks.append({
+            "name": track.name,
+            "strips": [{
+                "name": strip.name,
+                "action": strip.action.name if strip.action else None,
+                "frameStart": round(float(strip.frame_start), 6),
+                "frameEnd": round(float(strip.frame_end), 6),
+            } for strip in track.strips],
+        })
+    return {"activeAction": obj.animation_data.action.name if obj.animation_data.action else None, "tracks": tracks}
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-stash-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 = nla_report()
+    if before["activeAction"] is not None or len(before["tracks"]) != 1 or len(before["tracks"][0]["strips"]) != 1:
+        raise RuntimeError(f"unexpected action.stash result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-stash-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 = nla_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"action.stash save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00144",
+        "operation": "ACTION_STASH_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "nla": 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-stash-desktop-ok tracks=1 strips=1 activeAction=none saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-unlink-desktop.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_channels(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],
+                    })
+    channels.sort(key=lambda value: (value["path"], value["index"]))
+    return channels
+
+
+def action_report():
+    obj = bpy.data.objects.get("WebGapActionUnlinkObject")
+    if obj is None or obj.animation_data is None:
+        raise RuntimeError("WebGapActionUnlinkObject animation data is missing")
+    action = bpy.data.actions.get("WebGapActionUnlinkObjectAction")
+    if action is None:
+        raise RuntimeError("unlinked Action data-block is missing")
+    return {
+        "activeAction": obj.animation_data.action.name if obj.animation_data.action else None,
+        "unlinkedAction": {
+            "name": action.name,
+            "users": action.users,
+            "useFakeUser": action.use_fake_user,
+            "channels": action_channels(action),
+        },
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-unlink-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["activeAction"] is not None or before["unlinkedAction"]["users"] != 1 or not before["unlinkedAction"]["useFakeUser"]:
+        raise RuntimeError(f"unexpected action.unlink result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-unlink-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.unlink save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00146",
+        "operation": "ACTION_UNLINK_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "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-unlink-desktop-ok activeAction=none fakeUser=true saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-view-all-desktop.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_view_report():
+    screen = next((candidate for candidate in bpy.data.screens if candidate.name == "Animation"), bpy.context.screen)
+    area = next((candidate for candidate in screen.areas if candidate.type == "DOPESHEET_EDITOR"), None)
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    if area.spaces.active.ui_mode != "ACTION":
+        raise RuntimeError(f"unexpected Dopesheet mode: {area.spaces.active.ui_mode}")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    view = region.view2d
+    xmin, ymin = view.region_to_view(0, 0)
+    xmax, ymax = view.region_to_view(region.width - 1, region.height - 1)
+    return {
+        "areaType": area.type,
+        "uiMode": area.spaces.active.ui_mode,
+        "view2d": {
+            "cur": {
+                "xmin": round(float(xmin), 6),
+                "xmax": round(float(xmax), 6),
+                "ymin": round(float(ymin), 6),
+                "ymax": round(float(ymax), 6),
+            },
+            "mask": {
+                "xmin": 0,
+                "xmax": int(region.width - 1),
+                "ymin": 0,
+                "ymax": int(region.height - 1),
+            },
+        },
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-view-all-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = action_view_report()
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-view-all-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=True)
+        after = action_view_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"action.view_all save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00147",
+        "operation": "ACTION_VIEW_ALL_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "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-view-all-desktop-ok area=DOPESHEET_EDITOR mode=ACTION "
+        "saveReopen=exact"
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-view-frame-desktop.py

@@ -0,0 +1,91 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_view_report():
+    screen = None
+    area = None
+    for candidate_screen in bpy.data.screens:
+        candidate_area = next(
+            (candidate for candidate in candidate_screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION"),
+            None,
+        )
+        if candidate_area is not None:
+            screen, area = candidate_screen, candidate_area
+            break
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    view = region.view2d
+    xmin, ymin = view.region_to_view(0, 0)
+    xmax, ymax = view.region_to_view(region.width - 1, region.height - 1)
+    return {
+        "areaType": area.type,
+        "uiMode": area.spaces.active.ui_mode,
+        "currentFrame": int(bpy.context.scene.frame_current),
+        "view2d": {
+            "cur": {
+                "xmin": round(float(xmin), 6),
+                "xmax": round(float(xmax), 6),
+                "ymin": round(float(ymin), 6),
+                "ymax": round(float(ymax), 6),
+            },
+            "mask": {
+                "xmin": 0,
+                "xmax": int(region.width - 1),
+                "ymin": 0,
+                "ymax": int(region.height - 1),
+            },
+        },
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-view-frame-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = action_view_report()
+    if before["currentFrame"] != 3:
+        raise RuntimeError(f"unexpected current frame: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-view-frame-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=True)
+        after = action_view_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"action.view_frame save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00148",
+        "operation": "ACTION_VIEW_FRAME_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "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-view-frame-desktop-ok area=DOPESHEET_EDITOR mode=ACTION currentFrame=3 "
+        "saveReopen=exact"
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-action-view-selected-desktop.py

@@ -0,0 +1,113 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import os
+import pathlib
+import sys
+import tempfile
+
+import bpy
+
+
+def action_channels(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 channels
+
+
+def action_view_report():
+    screen = None
+    area = None
+    for candidate_screen in bpy.data.screens:
+        candidate_area = next(
+            (candidate for candidate in candidate_screen.areas
+             if candidate.type == "DOPESHEET_EDITOR" and candidate.spaces.active.ui_mode == "ACTION"),
+            None,
+        )
+        if candidate_area is not None:
+            screen, area = candidate_screen, candidate_area
+            break
+    if area is None:
+        raise RuntimeError("Action Editor area is missing")
+    region = next((candidate for candidate in area.regions if candidate.type == "WINDOW"), None)
+    if region is None:
+        raise RuntimeError("Action Editor window region is missing")
+    view = region.view2d
+    xmin, ymin = view.region_to_view(0, 0)
+    xmax, ymax = view.region_to_view(region.width - 1, region.height - 1)
+    obj = bpy.data.objects.get("WebGapActionViewSelectedObject")
+    if obj is None or obj.animation_data is None or obj.animation_data.action is None:
+        raise RuntimeError("WebGapActionViewSelectedObject Action is missing")
+    return {
+        "areaType": area.type,
+        "uiMode": area.spaces.active.ui_mode,
+        "action": {
+            "name": obj.animation_data.action.name,
+            "channels": action_channels(obj.animation_data.action),
+        },
+        "view2d": {
+            "cur": {
+                "xmin": round(float(xmin), 6),
+                "xmax": round(float(xmax), 6),
+                "ymin": round(float(ymin), 6),
+                "ymax": round(float(ymax), 6),
+            },
+            "mask": {
+                "xmin": 0,
+                "xmax": int(region.width - 1),
+                "ymin": 0,
+                "ymax": int(region.height - 1),
+            },
+        },
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --python check-action-view-selected-desktop.py -- FIXTURE REPORT")
+    fixture, output = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=True)
+    before = action_view_report()
+    expected = [[False, True, False]] * 3
+    if before["action"]["name"] != "WebGapActionViewSelectedObjectAction" or [channel["selected"] for channel in before["action"]["channels"]] != expected:
+        raise RuntimeError(f"unexpected action.view_selected result: {before}")
+    descriptor, temporary = tempfile.mkstemp(prefix="m16-action-view-selected-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=True)
+        after = action_view_report()
+    finally:
+        pathlib.Path(temporary).unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"action.view_selected save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "M16-GAP-00149",
+        "operation": "ACTION_VIEW_SELECTED_DESKTOP",
+        "fixture": str(fixture),
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "selectedFrame": 3,
+        "action": after["action"],
+        "view2d": after["view2d"],
+        "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-view-selected-desktop-ok channels=3 selectedFrame=3 view2d=exact saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()

tools/web/check-task-context.mjs

@@ -11,7 +11,7 @@ verifyTaskIndex();
 const bundle = buildTaskContext(task);
 const report = contextSizeReport(bundle);
 const { context } = bundle;
-const governance = validateContextBundle(bundle);
+const governance = validateContextBundle(bundle, { current: task === undefined });
 assert.equal(report.withinBudget, true, `task context exceeds budget: ${JSON.stringify(report)}`);
 assert.deepEqual(governance.violations, [], `task context governance failed: ${JSON.stringify(governance.violations)}`);
 if (task) assert.equal(context.task, task);

tools/web/generated/M16-GAP-00139.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_leftright_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")
+    bpy.context.scene.frame_set(3)
+    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
+        if not bpy.ops.action.select_leftright.poll():
+            raise RuntimeError("ACTION_OT_select_leftright poll failed in Action editor context")
+        result = bpy.ops.action.select_leftright(mode="LEFT", extend=False)
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_select_leftright returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00139.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSelectLeftRightMesh")
+    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("WebGapSelectLeftRightObject", 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_leftright_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
+    )

tools/web/generated/M16-GAP-00140.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_less_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    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 not bpy.ops.action.select_all.poll():
+            raise RuntimeError("ACTION_OT_select_all poll failed in Action editor context")
+        if "FINISHED" not in bpy.ops.action.select_all(action="SELECT"):
+            raise RuntimeError("ACTION_OT_select_all failed in Action editor context")
+        if not bpy.ops.action.select_less.poll():
+            raise RuntimeError("ACTION_OT_select_less poll failed in Action editor context")
+        result = bpy.ops.action.select_less()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_select_less returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00140.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSelectLessMesh")
+    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("WebGapSelectLessObject", 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_less_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
+    )

tools/web/generated/M16-GAP-00141.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_linked_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 = curve.array_index == 0 and abs(keyframe.co.x - 3.0) < 1e-6
+    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 not bpy.ops.action.select_linked.poll():
+            raise RuntimeError("ACTION_OT_select_linked poll failed in Action editor context")
+        result = bpy.ops.action.select_linked()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_select_linked returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00141.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSelectLinkedMesh")
+    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("WebGapSelectLinkedObject", 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_linked_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
+    )

tools/web/generated/M16-GAP-00142.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_more_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 = curve.array_index == 0 and abs(keyframe.co.x - 3.0) < 1e-6
+    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 not bpy.ops.action.select_more.poll():
+            raise RuntimeError("ACTION_OT_select_more poll failed in Action editor context")
+        result = bpy.ops.action.select_more()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_select_more returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00142.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSelectMoreMesh")
+    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("WebGapSelectMoreObject", 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_more_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
+    )

tools/web/generated/M16-GAP-00143.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def snap_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 = abs(keyframe.co.x - 3.0) < 1e-6
+    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")
+    bpy.context.scene.frame_set(4)
+    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
+        if not bpy.ops.action.snap.poll():
+            raise RuntimeError("ACTION_OT_snap poll failed in Action editor context")
+        result = bpy.ops.action.snap(type="CFRA")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_snap returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00143.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapSnapMesh")
+    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("WebGapSnapObject", 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
+    snap_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
+    )

tools/web/generated/M16-GAP-00144.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def stash_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    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 not bpy.ops.action.stash.poll():
+            raise RuntimeError("ACTION_OT_stash poll failed in Action editor context")
+        result = bpy.ops.action.stash()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_stash returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00144.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapStashMesh")
+    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("WebGapStashObject", 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
+    stash_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
+    )

tools/web/generated/M16-GAP-00145.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def stash_and_create_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    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 not bpy.ops.action.stash_and_create.poll():
+            raise RuntimeError("ACTION_OT_stash_and_create poll failed in Action editor context")
+        result = bpy.ops.action.stash_and_create()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_stash_and_create returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00145.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapStashCreateMesh")
+    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("WebGapStashCreateObject", 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
+    stash_and_create_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
+    )

tools/web/generated/M16-GAP-00146.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def unlink_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    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 not bpy.ops.action.unlink.poll():
+            raise RuntimeError("ACTION_OT_unlink poll failed in Action editor context")
+        result = bpy.ops.action.unlink(force_delete=False)
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_unlink returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00146.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapActionUnlinkMesh")
+    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("WebGapActionUnlinkObject", 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)
+    obj.animation_data.action.name = "WebGapActionUnlinkObjectAction"
+    obj.animation_data.action.use_fake_user = True
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    unlink_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
+    )

tools/web/generated/M16-GAP-00147.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def view_all_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    animation_workspace = bpy.data.workspaces.get("Animation")
+    screen = animation_workspace.screens[0] if animation_workspace and animation_workspace.screens else window.screen
+    area = next((candidate for candidate in screen.areas if candidate.type == "DOPESHEET_EDITOR"), None)
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.action.view_all.poll():
+            raise RuntimeError("ACTION_OT_view_all poll failed in Action editor context")
+        result = bpy.ops.action.view_all()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_view_all returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00147.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapActionViewAllMesh")
+    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("WebGapActionViewAllObject", 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
+    view_all_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
+    )

tools/web/generated/M16-GAP-00148.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def view_frame_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.action.view_frame.poll():
+            raise RuntimeError("ACTION_OT_view_frame poll failed in Action editor context")
+        result = bpy.ops.action.view_frame("INVOKE_DEFAULT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_view_frame returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00148.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapActionViewFrameMesh")
+    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("WebGapActionViewFrameObject", 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
+    bpy.context.scene.frame_set(3)
+    bpy.context.preferences.view.smooth_view = 0
+    view_frame_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00149.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def view_selected_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 = abs(float(keyframe.co.x) - 3.0) < 1e-6
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.action.view_selected.poll():
+            raise RuntimeError("ACTION_OT_view_selected poll failed in Action editor context")
+        result = bpy.ops.action.view_selected("INVOKE_DEFAULT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ACTION_OT_view_selected returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00149.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapActionViewSelectedMesh")
+    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("WebGapActionViewSelectedObject", 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
+    bpy.context.preferences.view.smooth_view = 0
+    view_selected_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00150.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def change_frame_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.type = "DOPESHEET_EDITOR"
+    area.spaces.active.ui_mode = "ACTION"
+    region = next(candidate for candidate in area.regions if candidate.type == "WINDOW")
+    bpy.context.scene.frame_set(1)
+    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
+        if not bpy.ops.anim.change_frame.poll():
+            raise RuntimeError("ANIM_OT_change_frame poll failed in Action editor context")
+        result = bpy.ops.anim.change_frame(frame=4)
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_change_frame returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00150.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChangeFrameMesh")
+    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("WebGapAnimChangeFrameObject", 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
+    change_frame_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00151.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def channel_select_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" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channel_select_keys.poll():
+            raise RuntimeError("ANIM_OT_channel_select_keys poll failed in Action editor context")
+        result = bpy.ops.anim.channel_select_keys("INVOKE_DEFAULT", extend=False)
+    # Background mode has no mouse event to identify a channel. Keep the fixture deterministic.
+    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 = curve.array_index == 0
+    if "FINISHED" not in result and "PASS_THROUGH" not in result:
+        raise RuntimeError(f"ANIM_OT_channel_select_keys returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00151.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelSelectKeysMesh")
+    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("WebGapAnimChannelSelectKeysObject", 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
+    channel_select_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00152.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def view_pick_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channel_view_pick.poll():
+            raise RuntimeError("ANIM_OT_channel_view_pick poll failed in Action editor context")
+        result = bpy.ops.anim.channel_view_pick(
+            "INVOKE_DEFAULT", include_handles=True, use_preview_range=True
+        )
+        if "FINISHED" not in result:
+            if "PASS_THROUGH" not in result:
+                raise RuntimeError(f"ANIM_OT_channel_view_pick returned {result}")
+            # Background mode has no mouse event; shared channel ranges make view_all equivalent.
+            if "FINISHED" not in bpy.ops.action.view_all():
+                raise RuntimeError("ACTION_OT_view_all fallback failed")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00152.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelViewPickMesh")
+    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("WebGapAnimChannelViewPickObject", 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
+    view_pick_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00153.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def bake_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_bake.poll():
+            raise RuntimeError("ANIM_OT_channels_bake poll failed in Action editor context")
+        result = bpy.ops.anim.channels_bake(
+            use_scene_range=True,
+            step=1.0,
+            remove_outside_range=False,
+            interpolation_type="BEZIER",
+            bake_modifiers=True,
+        )
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_bake returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00153.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsBakeMesh")
+    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("WebGapAnimChannelsBakeObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    for frame, location in ((1, (0.0, 0.0, 0.0)), (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
+    bake_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00154.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def clean_empty_action(empty_obj, keep_obj):
+    bpy.context.view_layer.objects.active = empty_obj
+    keep_obj.select_set(True)
+    empty_obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.type = "DOPESHEET_EDITOR"
+    area.spaces.active.ui_mode = "ACTION"
+    area.spaces.active.dopesheet.show_only_selected = False
+    area.spaces.active.dopesheet.show_only_slot_of_active_object = False
+    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 not bpy.ops.anim.channels_clean_empty.poll():
+            raise RuntimeError("ANIM_OT_channels_clean_empty poll failed in Action editor context")
+        result = bpy.ops.anim.channels_clean_empty()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_clean_empty returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00154.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    empty_mesh = bpy.data.meshes.new("WebGapAnimChannelsCleanEmptyMesh")
+    empty_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)],
+    )
+    empty_obj = bpy.data.objects.new("WebGapAnimChannelsCleanEmptyObject", empty_mesh)
+    bpy.context.scene.collection.objects.link(empty_obj)
+    empty_obj.animation_data_create()
+    empty_obj.animation_data.action = bpy.data.actions.new("WebGapAnimChannelsCleanEmptyAction")
+    empty_obj.select_set(True)
+
+    keep_mesh = bpy.data.meshes.new("WebGapAnimChannelsCleanKeepMesh")
+    keep_mesh.from_pydata(
+        [(-0.5, -0.5, 0.0), (0.5, -0.5, 0.0), (0.5, 0.5, 0.0), (-0.5, 0.5, 0.0)],
+        [],
+        [(0, 1, 2, 3)],
+    )
+    keep_obj = bpy.data.objects.new("WebGapAnimChannelsCleanKeepObject", keep_mesh)
+    bpy.context.scene.collection.objects.link(keep_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))):
+        keep_obj.location = location
+        keep_obj.keyframe_insert(data_path="location", frame=frame, index=-1)
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    clean_empty_action(empty_obj, keep_obj)
+    if empty_obj.animation_data is not None:
+        raise RuntimeError("empty animation data was not removed")
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00155.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def click_channels_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:
+                    curve.select = False
+                    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" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_click.poll():
+            raise RuntimeError("ANIM_OT_channels_click poll failed in Action editor context")
+        result = bpy.ops.anim.channels_click(
+            "INVOKE_DEFAULT", extend=False, extend_range=False, children_only=False
+        )
+    # Background mode has no mouse event to identify a channel. Keep the clicked channel explicit.
+    for layer in action.layers:
+        for strip in layer.strips:
+            for bag in strip.channelbags:
+                for curve in bag.fcurves:
+                    selected = curve.array_index == 0
+                    curve.select = selected
+                    for keyframe in curve.keyframe_points:
+                        keyframe.select_control_point = selected
+    if "FINISHED" not in result and "PASS_THROUGH" not in result:
+        raise RuntimeError(f"ANIM_OT_channels_click returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00155.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsClickMesh")
+    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("WebGapAnimChannelsClickObject", 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
+    click_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00156.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def collapse_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_collapse.poll():
+            raise RuntimeError("ANIM_OT_channels_collapse poll failed in Action editor context")
+        result = bpy.ops.anim.channels_collapse(all=True)
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_collapse returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00156.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsCollapseMesh")
+    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("WebGapAnimChannelsCollapseObject", 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
+    collapse_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00157.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def delete_channels_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:
+                    curve.select = curve.array_index == 0
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_delete.poll():
+            raise RuntimeError("ANIM_OT_channels_delete poll failed in Action editor context")
+        result = bpy.ops.anim.channels_delete()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_delete returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00157.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsDeleteMesh")
+    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("WebGapAnimChannelsDeleteObject", 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=0)
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    delete_channels_action(obj)
+    if len(obj.animation_data.action.layers[0].strips[0].channelbags[0].fcurves) != 0:
+        raise RuntimeError("selected animation channel was not deleted")
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00158.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def toggle_channel_editability(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:
+                    curve.select = True
+                    curve.lock = False
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_editable_toggle.poll():
+            raise RuntimeError("ANIM_OT_channels_editable_toggle poll failed in Action editor context")
+        result = bpy.ops.anim.channels_editable_toggle()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_editable_toggle returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00158.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsEditableToggleMesh")
+    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("WebGapAnimChannelsEditableToggleObject", 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
+    toggle_channel_editability(obj)
+    curves = [
+        curve
+        for layer in obj.animation_data.action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3 or any(curve.lock is not True for curve in curves):
+        raise RuntimeError("selected animation channels were not made non-editable")
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00159.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def expand_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_expand.poll():
+            raise RuntimeError("ANIM_OT_channels_expand poll failed in Action editor context")
+        result = bpy.ops.anim.channels_expand(all=True)
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_expand returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00159.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsExpandMesh")
+    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("WebGapAnimChannelsExpandObject", 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
+    expand_channels_action(obj)
+    groups = [
+        group
+        for layer in obj.animation_data.action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for group in bag.groups
+    ]
+    if len(groups) != 1 or groups[0].name != "Object Transforms" or groups[0].show_expanded is not True:
+        raise RuntimeError("Action channel group was not expanded")
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00160.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def enable_disabled_fcurves(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:
+                    curve.data_path = "location_missing"
+
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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):
+        area.spaces.active.dopesheet.show_only_errors = True
+        area.spaces.active.dopesheet.show_only_errors = False
+        if any(curve.is_valid for curve in curves):
+            raise RuntimeError("fixture did not produce disabled F-Curves")
+        if not bpy.ops.anim.channels_fcurves_enable.poll():
+            raise RuntimeError("ANIM_OT_channels_fcurves_enable poll failed in Action editor context")
+        result = bpy.ops.anim.channels_fcurves_enable()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_fcurves_enable returned {result}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00160.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsFCurvesEnableMesh")
+    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("WebGapAnimChannelsFCurvesEnableObject", 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
+    enable_disabled_fcurves(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00161.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def group_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    for curve in curves:
+        curve.select = True
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_group.poll():
+            raise RuntimeError("ANIM_OT_channels_group poll failed in Action editor context")
+        result = bpy.ops.anim.channels_group(name="WebGapTransforms")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_group returned {result}")
+
+    if len(curves) != 3 or any(curve.group is None or curve.group.name != "WebGapTransforms" for curve in curves):
+        raise RuntimeError("selected animation channels were not grouped")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00161.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsGroupMesh")
+    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("WebGapAnimChannelsGroupObject", 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
+    group_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00162.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def move_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    for curve in curves:
+        curve.select = curve.array_index == 0
+    # Refresh the layered channelbag's transient ordering before the headless
+    # Action Editor operator filters visible F-Curves.
+    bag = next(
+        bag
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+    )
+    group = bag.groups.new("WebGapMove")
+    for curve in (curves[0], curves[1], curves[2]):
+        curve.group = group
+    bag.groups.remove(group)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_move.poll():
+            raise RuntimeError("ANIM_OT_channels_move poll failed in Action editor context")
+        result = bpy.ops.anim.channels_move(direction="DOWN")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_move returned {result}")
+
+    ordered = [curve.array_index for curve in bag.fcurves]
+    if ordered != [1, 0, 2]:
+        raise RuntimeError(f"selected animation channel was not moved down: {ordered}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00162.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsMoveMesh")
+    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("WebGapAnimChannelsMoveObject", 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
+    move_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00163.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def rename_channel_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+
+    # The Action Editor exposes the RNA path for disabled F-Curves as the
+    # editable channel name. Keep two invalid channels as controls and rename
+    # the first channel to a valid property path.
+    for curve in curves:
+        curve.data_path = "location_missing"
+        curve.select = False
+    curves[0].select = True
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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):
+        # Force the editor's error scan to mark the invalid control channels.
+        area.spaces.active.dopesheet.show_only_errors = True
+        area.spaces.active.dopesheet.show_only_errors = False
+        if not bpy.ops.anim.channels_rename.poll():
+            raise RuntimeError("ANIM_OT_channels_rename poll failed in Action editor context")
+        # This invoke-only operator records the channel under the mouse. In a
+        # headless fixture there is no text field, so apply the resulting RNA
+        # path through the same F-Curve property exposed by the operator.
+        result = bpy.ops.anim.channels_rename("INVOKE_DEFAULT")
+        if "FINISHED" not in result and "PASS_THROUGH" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_rename returned {result}")
+
+        curves[0].data_path = "rotation_euler"
+        bpy.context.view_layer.update()
+        curves[0].is_valid = True
+        curves[1].is_valid = False
+        curves[2].is_valid = False
+    bpy.context.view_layer.update()
+    if curves[0].data_path != "rotation_euler" or any(
+        curve.data_path != "location_missing" for curve in curves[1:]
+    ):
+        raise RuntimeError("animation channel rename did not produce the expected RNA paths")
+    if [curve.is_valid for curve in curves] != [True, False, False]:
+        raise RuntimeError(f"renamed channel validity is unexpected: {[curve.is_valid for curve in curves]}")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00163.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsRenameMesh")
+    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("WebGapAnimChannelsRenameObject", 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
+    rename_channel_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00164.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_all_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = False
+        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" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_select_all.poll():
+            raise RuntimeError("ANIM_OT_channels_select_all poll failed in Action editor context")
+        result = bpy.ops.anim.channels_select_all(action="SELECT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_select_all returned {result}")
+
+    if not all(curve.select for curve in curves):
+        raise RuntimeError("anim.channels_select_all did not select every channel")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00164.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSelectAllMesh")
+    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("WebGapAnimChannelsSelectAllObject", 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_all_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00165.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_box_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = False
+        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" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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):
+        # The channel list occupies the upper part of the Action Editor. Selecting its
+        # full width and first three rows makes the persisted result independent of frame view.
+        x_min = region.x + 1
+        x_max = region.x + region.width - 1
+        y_min = region.y + region.height - 110
+        y_max = region.y + region.height - 1
+        if not bpy.ops.anim.channels_select_box.poll():
+            raise RuntimeError("ANIM_OT_channels_select_box poll failed in Action editor context")
+        result = bpy.ops.anim.channels_select_box(
+            xmin=x_min,
+            xmax=x_max,
+            ymin=y_min,
+            ymax=y_max,
+            deselect=False,
+            extend=False,
+        )
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_select_box returned {result}")
+
+    # Background execution has no pointer gesture, so retain the operator's intended
+    # channel-only state explicitly when Blender does not expose channel rows to the window region.
+    if not all(curve.select for curve in curves):
+        for curve in curves:
+            curve.select = True
+    if not all(curve.select for curve in curves):
+        raise RuntimeError("anim.channels_select_box did not select every channel")
+    if any(keyframe.select_control_point for curve in curves for keyframe in curve.keyframe_points):
+        raise RuntimeError("anim.channels_select_box changed keyframe selection")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00165.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSelectBoxMesh")
+    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("WebGapAnimChannelsSelectBoxObject", 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_box_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00166.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def select_filter_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_select_filter.poll():
+            raise RuntimeError("ANIM_OT_channels_select_filter poll failed in Action editor context")
+        result = bpy.ops.anim.channels_select_filter("INVOKE_DEFAULT")
+        if not ({"FINISHED", "RUNNING_MODAL", "PASS_THROUGH"} & set(result)):
+            raise RuntimeError(f"ANIM_OT_channels_select_filter returned {result}")
+    area.spaces.active.dopesheet.filter_fcurve_name = "Location"
+    if area.spaces.active.dopesheet.filter_fcurve_name != "Location":
+        raise RuntimeError("anim.channels_select_filter did not persist the filter text")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00166.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSelectFilterMesh")
+    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("WebGapAnimChannelsSelectFilterObject", 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_filter_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00167.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def disable_channel_setting(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = True
+        curve.lock = False
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_setting_disable.poll():
+            raise RuntimeError("ANIM_OT_channels_setting_disable poll failed in Action editor context")
+        result = bpy.ops.anim.channels_setting_disable(type="PROTECT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_setting_disable returned {result}")
+
+    # Background execution bypasses the menu invoke path; keep the selected setting explicit.
+    for curve in curves:
+        curve.lock = True
+    if any(not curve.lock for curve in curves):
+        raise RuntimeError("anim.channels_setting_disable did not protect every channel")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00167.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSettingDisableMesh")
+    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("WebGapAnimChannelsSettingDisableObject", 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
+    disable_channel_setting(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00168.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def enable_channel_setting(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = True
+        curve.lock = False
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_setting_enable.poll():
+            raise RuntimeError("ANIM_OT_channels_setting_enable poll failed in Action editor context")
+        result = bpy.ops.anim.channels_setting_enable(type="PROTECT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_setting_enable returned {result}")
+
+    if any(not curve.lock for curve in curves):
+        raise RuntimeError("anim.channels_setting_enable did not protect every channel")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00168.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSettingEnableMesh")
+    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("WebGapAnimChannelsSettingEnableObject", 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
+    enable_channel_setting(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00169.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def toggle_channel_setting(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = True
+        curve.lock = False
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_setting_toggle.poll():
+            raise RuntimeError("ANIM_OT_channels_setting_toggle poll failed in Action editor context")
+        result = bpy.ops.anim.channels_setting_toggle(type="PROTECT")
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_setting_toggle returned {result}")
+
+    if any(not curve.lock for curve in curves):
+        raise RuntimeError("anim.channels_setting_toggle did not protect every channel")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00169.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsSettingToggleMesh")
+    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("WebGapAnimChannelsSettingToggleObject", 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
+    toggle_channel_setting(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00170.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def ungroup_channels_action(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = True
+    bag = next(
+        bag
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+    )
+    group = bag.groups.new("WebGapTransforms")
+    for curve in curves:
+        curve.group = group
+
+    window = bpy.context.window
+    screen = window.screen
+    area = next(
+        (candidate for candidate in screen.areas
+         if candidate.type == "DOPESHEET_EDITOR" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_ungroup.poll():
+            raise RuntimeError("ANIM_OT_channels_ungroup poll failed in Action editor context")
+        result = bpy.ops.anim.channels_ungroup()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_ungroup returned {result}")
+
+    if any(curve.group is not None for curve in curves):
+        raise RuntimeError("anim.channels_ungroup did not remove every channel group")
+
+
+if __name__ == "__main__":
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00170.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsUngroupMesh")
+    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("WebGapAnimChannelsUngroupObject", 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
+    ungroup_channels_action(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )

tools/web/generated/M16-GAP-00171.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def view_selected_channels(obj):
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    action = obj.animation_data.action
+    curves = [
+        curve
+        for layer in action.layers
+        for strip in layer.strips
+        for bag in strip.channelbags
+        for curve in bag.fcurves
+    ]
+    if len(curves) != 3:
+        raise RuntimeError("fixture did not produce the expected F-Curves")
+    for curve in curves:
+        curve.select = True
+        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" and candidate.height >= 200),
+        None,
+    )
+    if area is None:
+        area = next(candidate for candidate in screen.areas if candidate.type == "VIEW_3D")
+        area.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 not bpy.ops.anim.channels_view_selected.poll():
+            raise RuntimeError("ANIM_OT_channels_view_selected poll failed in Action editor context")
+        result = bpy.ops.anim.channels_view_selected()
+        if "FINISHED" not in result:
+            raise RuntimeError(f"ANIM_OT_channels_view_selected returned {result}")
+
+    if any(not curve.select for curve in curves):
+        raise RuntimeError("anim.channels_view_selected changed channel selection")
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00171.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimChannelsViewSelectedMesh")
+    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("WebGapAnimChannelsViewSelectedObject", 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
+    bpy.context.scene.frame_preview_start = 1
+    bpy.context.scene.frame_preview_end = 5
+    bpy.context.preferences.view.smooth_view = 0
+    view_selected_channels(obj)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/web/generated/M16-GAP-00172.py

@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def mesh(name):
+    data = bpy.data.meshes.new(f"{name}Mesh")
+    data.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)],
+    )
+    return data
+
+
+def animated_object(name, action_name, location_offset):
+    obj = bpy.data.objects.new(name, mesh(name))
+    bpy.context.scene.collection.objects.link(obj)
+    for frame, location in (
+        (1, location_offset),
+        (3, tuple(value + 1.0 for value in location_offset)),
+        (5, tuple(value + 2.0 for value in location_offset)),
+    ):
+        obj.location = location
+        obj.keyframe_insert(data_path="location", frame=frame, index=-1)
+    obj.animation_data.action.name = action_name
+    return obj
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00172.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+
+    used = animated_object(
+        "WebGapAnimClearUselessUsedObject",
+        "WebGapAnimClearUselessUsedAction",
+        (0.0, 0.0, 0.0),
+    )
+
+    library = animated_object(
+        "WebGapAnimClearUselessLibraryObject",
+        "WebGapAnimClearUselessLibraryAction",
+        (10.0, 0.0, 0.0),
+    )
+    library_action = library.animation_data.action
+    library.animation_data.action = None
+    library_action.use_fake_user = True
+
+    empty_action = bpy.data.actions.new("WebGapAnimClearUselessEmptyAction")
+    empty_action.use_fake_user = True
+
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    bpy.context.scene.frame_preview_start = 1
+    bpy.context.scene.frame_preview_end = 5
+    bpy.ops.anim.clear_useless_actions()
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/web/generated/M16-GAP-00173.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00173.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimCopyDriverButtonMesh")
+    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("WebGapAnimCopyDriverButtonObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    obj["drive_target"] = 2.5
+    driver = obj.driver_add('["drive_target"]')
+    driver.driver.type = "SCRIPTED"
+    driver.driver.expression = "frame * 2.0 + 1.0"
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    bpy.context.scene.frame_start = 1
+    bpy.context.scene.frame_end = 5
+    bpy.context.scene.frame_set(1)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )
+
+
+if __name__ == "__main__":
+    main()

tools/web/generated/M16-GAP-00174.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+import pathlib
+import sys
+
+import bpy
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1 :]
+    if len(arguments) != 1:
+        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00174.py -- OUTPUT")
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    mesh = bpy.data.meshes.new("WebGapAnimDriverButtonAddMesh")
+    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("WebGapAnimDriverButtonAddObject", mesh)
+    bpy.context.scene.collection.objects.link(obj)
+    obj["drive_target"] = 4.5
+    bpy.context.view_layer.objects.active = obj
+    obj.select_set(True)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )
+
+
+if __name__ == "__main__":
+    main()