Give every opponent a style, and split the soft ball into drop and lob

Step 2 of the rally rework: eight styles as dials on the opponent rows —
pusher, retriever, slicer, big hitter, baseliner, touch, net rusher,
all-court — read where the CPU chooses its shot (moonball, drop, lob,
spin), plans its approach and serves (serve and volley sprints in). The
walk-on names the style in one line so the player can plan against it.
A player lobbed at the net now backpedals and blocks, like the CPU.

Oliver on v363: the down-flick "always felt like a lob". The length is read
at contact and a thumb has usually travelled on; on the continuum even
50 px floated the ball. Below dropMax (90 px) it is now the drop, above it
the lob. Also un-flakes the machine-squeak test (seed 31337). v364.

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

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