Stop the auto-run shaking while it chases a ball

Oliver: "wenn der Autoplay den Ball versucht zu bekommen, zittert der
Player schnell hin und her". Measured: the run's target flipped by
metres every other frame. intercept samples the flight every 10 ms
against a 16.7 ms frame, so any candidate on a margin (a low bounce
peaking on the 0.45 m floor, a point on the back boundary, a dying drop)
passed one frame and failed the next. Frames with no candidate sent him
home and back. 9-62 reversals inside 200 ms per five minutes.

The chase now latches its plan: the flight is fixed at the strike, so
the first point stays the answer while his legs still make it in time,
net of any time he stood (split-step, heels). Reach is judged from where
the chase began, and the target eases with a start/stop hysteresis.
After: no reversals at any rung, timing unchanged. He wastes no steps,
so he is a little stronger, mostly at the bottom of the ladder. New
test; v375.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/state.js

@@ -206,7 +206,7 @@ export const other = s => s === 'P' ? 'O' : 'P';
 export const deuceSide = () => (score.pts[0] + score.pts[1]) % 2 === 0; // even points → deuce (right) side
 
 export function setupPoint() {
-  G.phase = 'pretoss'; ball.active = false; ball.bounces = 0; ball.scored = false; ball.rx = null; ball.heels = 0; ball.approach = null; ball.retreat = null; ball.smash = false;
+  G.phase = 'pretoss'; ball.active = false; ball.bounces = 0; ball.scored = false; ball.rx = null; ball.heels = 0; P.chase = P.goal = P.goalKey = null; P.running = false; ball.approach = null; ball.retreat = null; ball.smash = false;
   G.swingSnaps = null; G.rallyNear = null; G.swung = false;
   if (G.mode === 'splatter' && !G.match) { // always your serve, from wherever you're standing
                                            // (the MATCH falls through to the tennis branch below: