Let an early tap be a weak ball, and let the CPU put a sitter away

Step 4 (b), Oliver's pick. v372 measured why the ladder could not climb:
nearly every lost point was the player's own early whiff, the CPU barely
missed, and the auto-run reached everything, so no opponent dial decided
a point.

- The follow-through: a groundstroke swing meets a bounced ball up to
  60 ms after its window at q 0.05. The early whiff edge goes from ~70 ms
  back to ~130 ms, where the volley window had it before step 1.
- A sitter (a player ball under q 0.5) is put away with a chance that is
  the ladder (0.2 at the bottom of the Climb, 0.85 at the Champion, by
  difficulty in classic): clean, at the line, bounded by the rung's width.
- The player is on his heels for 0.5 s after a put-away of his own sitter.
  Without it the auto-run covered the whole court and no put-away won.
- Fixed a step-2 regression this surfaced: the drop's dig-out cap fired on
  every slice drive, so every low contact against the slicer was a sitter.

Measured at level 26: the Climb now slopes from 95% of points at the
Shambler to 28-39% at the Champion. The net rushers are still easier than
their neighbours. The log names put-aways. Three new tests; v373.

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

src/config.js

@@ -153,6 +153,15 @@ export const TUNE = {
                            // screen: a short swipe is a safe half-court ball, and only a committed
                            // one goes hunting the line, which is what makes going OUT a chosen risk.
   perfectMs: 45,           // |offset from window center| for PERFECT
+  swingTail: 0.06,         // s: rally modes, a groundstroke swing still meets a ball arriving this long after
+                           // its window closes — the follow-through, q 0.05 (a weak short ball, not a whiff).
+                           // 0 = the old edge: a tap ~70 ms early whiffed (step 4, see gameplay.trySwing)
+  punishBelow: 0.5,        // a player ball under this q is a SITTER the CPU may put away (gameplay.punishes)
+  punishMin: 0.2,          // ...the chance it does at the bottom of the ladder
+  punishMax: 0.85,         // ...and at the CHAMPION (classic: DIFFS[].punish)
+  punishQ: 0.95,           // the put-away's quality, played to the open court...
+  punishX: 3.5,            // ...at this x, inside the singles line (4.1), bounded by the rung's width dial
+  punishRead: 0.5,         // s the player's auto-run stands flat-footed on a put-away of his own sitter
   qSeamless: 1,            // rally modes: past perfectMs, q falls from 1 to the window edge with no step.
                            // 0 = the old curve, 1 - off/half, which dropped a groundstroke 1 ms past
                            // PERFECT straight to q 0.43 (step 4, 2026-10-14 — see gameplay.trySwing)
@@ -919,9 +928,9 @@ export const MENU = [{ mode: 'zombie' }, { mode: 'train' }, { mode: 'classic' }]
 export const DIFFS = [
   // EASY's first cut (flub 0.30, quality cap 0.62, reaction 0.62) was "way too easy" once HARD
   // taught us which dials bite — it is a mild step below MEDIUM now, not a training dummy
-  { id: 'easy',   name: 'EASY',   flub: 0.15, quality: 0.80, qMin: 0.45, speed: 0.95, reaction: 0.50, reach: 1.55, serve: 0.95, smart: 0,    recover: 0.48 },
-  { id: 'medium', name: 'MEDIUM', flub: 0.06, quality: 0.92, qMin: 0.56, speed: 1.18, reaction: 0.34, reach: 1.70, serve: 1.05, smart: 0.35, recover: 0.66 },
-  { id: 'hard',   name: 'HARD',   flub: 0.02, quality: 1.0,  qMin: 0.66, speed: 1.38, reaction: 0.27, reach: 1.80, serve: 1.15, smart: 0.7,  recover: 0.80 },
+  { id: 'easy',   name: 'EASY',   flub: 0.15, quality: 0.80, qMin: 0.45, speed: 0.95, reaction: 0.50, reach: 1.55, serve: 0.95, smart: 0,    recover: 0.48, punish: 0.2 },
+  { id: 'medium', name: 'MEDIUM', flub: 0.06, quality: 0.92, qMin: 0.56, speed: 1.18, reaction: 0.34, reach: 1.70, serve: 1.05, smart: 0.35, recover: 0.66, punish: 0.5 },
+  { id: 'hard',   name: 'HARD',   flub: 0.02, quality: 1.0,  qMin: 0.66, speed: 1.38, reaction: 0.27, reach: 1.80, serve: 1.15, smart: 0.7,  recover: 0.80, punish: 0.8 },
 ];
 
 // THE TOURNAMENT (Oliver's pick over the endless ladder, 2026-08-13): four rounds up the club's