Superseded by the post-download chain (Auto-Scan Video After Downloads → Auto-Update
Video Database After Scan), which keeps the library fresh without a separate scheduled
scan. Two small changes: drop it from SYSTEM_AUTOMATIONS (no longer seeded), and a
one-time flag-guarded cleanup (_fix_video_scan_default, v3) that DELETES the existing
system row — so it actually stops running, not just hidden. The video_scan_library
action/handler/block stay, so a custom scan automation can still be built later.
Engine seed test updated. 66 automation tests pass.