Interactive repro: fire one missile salvo, then only lasers. Cause: ProjectileWeapon::
CheckForJam gates the heat-scaled jam roll on `heatLoad > 0` (true whenever firing), and
the roll uses currentTemperature -- which the reconstructed heat model pins at a constant
~77 (thermalMass is huge, so temp doesn't rise/fall with fire yet). So the roll fired
spuriously on ~every shot, and since JammedState clears only on ResetToInitialState, a
weapon that jammed stayed jammed for the whole mission. (The auto-fire harness hid this --
it kills the target before jams accumulate.)
Fix: gate the roll on the weapon being in a degraded HEAT STATE (heatAlarm level >=
DegradationHeat) instead of raw heatLoad -- the authentic "jam risk scales with heat" rule.
In bring-up the alarm stays 0 (temp << degradation threshold), so weapons fire reliably;
real jams return once the heat model drives true temps. FOLLOW-UP noted in-code: make
JammedState recoverable (unjam delay) so even a genuine overheat jam clears.
Verified: 31 projectile impacts sustained over 18s, 0 crashes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
