You are STAGE 4 of 6 in a chain of fresh sessions making the "Core Loop" music video in ~/code_anim/projects/hermes_coreloop/ (use your code-animation skill). Your memory is short: read ONLY what this stage lists.

Read: HANDOFF.md, API_QUICK.md, MUSIC_VIDEO_GUIDE.md, and in STORYBOARD.md only the verse 2 section.

This stage: the shots for 38.2 to 50.32 s, in src/scenes/part3.js. Timed lines:
  38.20 <lyric line 9>
  40.60 <lyric line 10>
  44.02 <lyric line 11>
  47.24 <lyric line 12>
Verse 2 returns to the desk (after the break's turn) with AEGIS now confident. Act each line (the props the lines name). The mug is SET while it sits still and an ACTOR only while it is lifted.

Work one shot at a time with `~/code_anim/lint.sh hermes_coreloop 40` after each edit. Then render `~/code_anim/render.sh hermes_coreloop --sheet=39,41.5,43,45.5,48,49.8 --cols=3 --w=640 --out=out/check/s4.jpg`, vision_analyze, fix, look again (at least 2 rounds). `~/code_anim/check_still.sh hermes_coreloop 41:43` and look at the heat map. Strip across the seam into verse 2: `--strip=37.9:38.5 --cols=8 --w=240 --out=out/check/s4_seam.jpg`, look.

APPEND to HANDOFF.md: your shot list and anything left wrong. End your reply with the words STAGE 4 DONE.
