COB-exact: timeline 1:1 from armcarry.cob (perpetual spin (Create), disassembled with _cob_dis.py). StateChg staged-deploy family: 1 open stages, then the compiled close order — not a reversed activate. Fire/hit/death/smoke scripts are engine-driven or firing-only and not part of this loop.
Animation

PNG frames

Frame 0 / 740.00 s
COB timeline (ARMCARRY.COB)
- 0.00–6.00 s — perpetual spin — radar y-turn 0°/s: started in Create, the engine never stops it. Rendered as one full turn per loop (1·360°) with the loop end solved to an exact 360° multiple (rate rounding < 0.18°). Wake/SmokeUnit pieces are engine-side and stay out of the loop.
Every stage duration equals its COB sleep exactly; values are raw COB units (turns: BAM 65536 = 360°, moves: elmo × 163840). Renderer conversions follow the proven family conventions (_cob_anim.py).