Keep the racket in one hand through the wind-up

Oliver, off the file browser: "the racket changes the hand in 3 and 4". It did —
the generator drew frames 1-2 right-handed and 3-4 left-handed. Both mirrored into
line with the rest of the serve (a back-view figure mirrors for free), and the
batch prompt now names the side, since the generator will not hold a prop in one
hand across a sheet unless told to.

The convention the rest of the art already uses: racket on the LEFT-HAND SIDE OF
THE IMAGE, free arm on the RIGHT — the side the game drops the bounced ball and
tosses the served one. p_smash keeps the racket on the right: that is the frame
where it has come over the top to meet the ball it is hitting.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

HANDOFF.md

@@ -419,6 +419,14 @@ player has three problems. All four fixed, all four measured first.
   `drawChar` off `pullFrac(G.aim.mag)`, the same 0..1 that sets the shot's power. Drag further, coil
   further; release fires `p_smash`. Verified per stage with drawImage instrumentation:
   mag 10/50/90/130 -> pull1/pull2/pull3/pull4.
+- **The racket must stay in ONE hand across a whole sheet, and the generator will not do it unasked.**
+  Oliver, straight off the file browser: *"the racket changes the hand in 3 and 4"*. It did — frames
+  1-2 came back right-handed and 3-4 left-handed. Both mirrored into line (a back-view figure mirrors
+  for free) and the batch prompt now names the side explicitly. The convention the rest of the art
+  uses: **racket on the LEFT-HAND SIDE OF THE IMAGE, free arm on the RIGHT** — which is also the side
+  the game drops the bounced ball (`BOUNCE_IDLE.dx` > 0) and tosses the served one (`P.x + 0.35`).
+  `p_smash` is the deliberate exception: the racket comes over to the right to meet the ball it is
+  actually hitting.
 - **The bounce pair is now ONE drawing.** `p_bounce2` is `p_bounce` with the free arm sheared up 12
   px (0.10 m) — everything else is pixel-identical, so the swap cannot flicker. The swap follows the
   BALL now (`|sin| > 0.5`) instead of its rising phase, and `BOUNCE_IDLE` was re-measured off the

assets/_regen_batches.json

@@ -425,6 +425,6 @@
   ],
   "anchor": 0,
   "check": "same",
-  "subject": "The reference shows the SAME tennis player three times \u2014 white shirt, blue shorts, white headband, seen FROM BEHIND: standing, tossing, and smashing. Draw FIVE frames of that same player, same size, same style, same BRIGHT WHITE shirt and BRIGHT BLUE shorts \u2014 do not wash the colours out. Every figure is seen strictly FROM BEHIND, the back of his head towards you, NO face, NO eyes, NO nose. Frame 1 is him simply STANDING upright and relaxed, arms down, racket in his right hand \u2014 a plain standing frame. Frames 2 to 5 are four stages of ONE continuous serve wind-up and each must be clearly further into it than the one before. Through all four his LEFT arm stays thrown up high above him where he has just released the ball, and NO BALL is drawn anywhere \u2014 the game draws the ball. Frame 2: standing tall, the racket held UP ABOVE HIS HEAD in his right hand, body straight. Frame 3: the racket has dropped behind his head, his back beginning to arch backwards, knees slightly bent. Frame 4: the racket is down behind his back, his back clearly arched backwards, chest pushed up and out, knees bent. Frame 5: fully coiled \u2014 the racket hangs low behind his back near his waist, his back arched hard backwards, both knees deeply bent, weight back on his heels, ready to explode upwards. Output exactly five figures in one row, evenly spaced and far apart."
+  "subject": "The reference shows the SAME tennis player three times \u2014 white shirt, blue shorts, white headband, seen FROM BEHIND: standing, tossing, and smashing. Draw FIVE frames of that same player, same size, same style, same BRIGHT WHITE shirt and BRIGHT BLUE shorts \u2014 do not wash the colours out. Every figure is seen strictly FROM BEHIND, the back of his head towards you, NO face, NO eyes, NO nose. Frame 1 is him simply STANDING upright and relaxed, arms down, racket in his right hand \u2014 a plain standing frame. Frames 2 to 5 are four stages of ONE continuous serve wind-up and each must be clearly further into it than the one before. Through all four the racket stays in ONE hand \u2014 the hand on the LEFT-HAND SIDE OF THE IMAGE, the same hand that holds it in the reference \u2014 and his other arm, on the RIGHT-HAND SIDE OF THE IMAGE, stays thrown up high above him where he has just released the ball. The racket must never change hands between frames. NO BALL is drawn anywhere \u2014 the game draws the ball. Frame 2: standing tall, the racket held UP ABOVE HIS HEAD in his right hand, body straight. Frame 3: the racket has dropped behind his head, his back beginning to arch backwards, knees slightly bent. Frame 4: the racket is down behind his back, his back clearly arched backwards, chest pushed up and out, knees bent. Frame 5: fully coiled \u2014 the racket hangs low behind his back near his waist, his back arched hard backwards, both knees deeply bent, weight back on his heels, ready to explode upwards. Output exactly five figures in one row, evenly spaced and far apart."
  }
 }