The CPU share learned the p90 of the host-wide peak minus before, which carries every neighbour's spike: 30 days of history give test-nostack a p90 of 73.8 against a median of 9.7, and rows that no other job overlaps learn the same p90, so concurrency is not the cause. signature() also kept the --repo value of a script as its operand, so every worktree's scan learned apart and fell back to the kind (130 of 301 test-nostack rows). The CPU share now learns the median while RAM keeps the p90, and an operand holding a path separator leaves the signature. New optional config keys exclusive_kinds and light_kinds: a job of an exclusive kind runs only beside light kinds, and an exclusive entry that only running jobs of other kinds keep out holds back every later non-light entry, so no lower-ranked job overtakes a waiting gate.
🎯 Fix: 91 %
💥 Break: 4 %
💸 Cost: 100 %
⏱️ Time: 100 %
🛡️ Security: 100 %
🏆 Score: 87
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
