Continue Blender Web parity task handoff

tools/web/generated/M16-GAP-00180.py

@@ -0,0 +1,41 @@
+#!/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-00180.py -- OUTPUT")
+
+    bpy.ops.wm.read_factory_settings(use_empty=True)
+    scene = bpy.context.scene
+    sequence_editor = scene.sequence_editor_create()
+    source = pathlib.Path(__file__).resolve().parents[3] / "tests/files/web/media/sequencer-frame.png"
+    strip = sequence_editor.strips.new_image(
+        name="WebGapAnimKeyframeClearVSEStrip",
+        filepath=str(source),
+        channel=1,
+        frame_start=1,
+    )
+    strip.directory = "//../media/"
+    strip.frame_final_duration = 6
+    strip.select = True
+    sequence_editor.active_strip = strip
+    for frame, value in ((1, 0.25), (3, 0.5), (5, 0.75)):
+        scene.frame_set(frame)
+        strip.blend_alpha = value
+        strip.keyframe_insert(data_path="blend_alpha", frame=frame)
+    scene.animation_data.action.name = "WebGapAnimKeyframeClearVSEAction"
+    scene.frame_start = 1
+    scene.frame_end = 6
+    scene.frame_set(3)
+    bpy.ops.wm.save_as_mainfile(
+        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
+    )
+
+
+if __name__ == "__main__":
+    main()