Decisive measurement for the j160 firing floor, on the recorded closed-loop
corpus (8149 recordings / 35163 rounds / 34.46M ticks, state only):
* 61.2% of rounds end with self energy crossing 0. Energy at death: median
0.83, p90 8.90, max 24.83 -- the bot dies BROKE, so the floor's premise is
real. Time at energy<=0 is a median of 1 tick: the round ends on the
crossing tick, there is no recoverable disabled window.
* Reserve that would have absorbed the killing blow: median 0.40, p75 2.00,
p90 6.90.
* Cannot climb back out: at energy<=5 the next tick brings a landed hit 0.232%
of the time and death 0.663% (2.9x). At <=20 recovery is 2x more likely,
which is why a floor at 20 is the wrong value.
* Cost: floor 5 blocks 9.58% of ticks, median run 53, mean run 118, banking
~9.9 energy against a p75 overshoot of 2.0.
* Measured caveat: the recorded ledger closes exactly (residual -0.00 over
35065 rounds), so these captures do NOT charge firepower cost; the cost
column is derived from the game rules, and the landed-hit power (mode 1.0,
mean 1.42) is what sets the bracket.
Honest read: worth an A/B, materially different in magnitude from the geometry
arm (smaller damage cost, stronger and directly measured safety claim), so NOT
the clean 'protects against nothing' negative.
docs/ram_floor_exhaustion_ab.md: replaces the draft with the measurement plus a
re-sized A/B proposal (4 arms, 42 runs/opponent/arm, 630 runs/arm for MDE 0.10
wins/run, ~2.7 h at the measured 23 battles/min). NOT RUN -- no battle, server
or GUI was started. Both knobs remain default 0.0.
SirStone
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