[frahlg]

Problem

On master 575152e (beta v0.157.3-beta.1) the local rig short set failed s18-16 (s18-car-first-battery-charge-16A) on one criterion, "own commands stay inside the rated fuse":

• max_i_own_commands 16.011 A against the judge's fixed bound of 16.01 A (16 A fuse, safety margin 0 since fix(config): fuse safety_margin_a defaults to 0 #1914).
• The 60 s heat at that reading was 14.95 A, and it stayed under 15.56 A for the whole own-command window.
• Every other criterion passed, and the fuse held.

At margin 0 Core holds the phases at the 16 A line, so readings jitter a few mA either side of it. A fixed bound 0.01 A over the fuse fails on that jitter. That bound also breaks the owner rule (27 Oct 2026): the working limit is the fuse rating, readings between In and 1.2 x In are judged by the I²t heat model (tau 60 s), and anything over 1.2 x In fails at once.

Change

judgeS18 (go/test/site/ev_battery_priority_test.go) now judges own-command readings with the shared warm() / heatOver() helpers that the random and R5a judges already use. A reading fails only when it is over the fuse while its phase's 60 s heat is also over the fuse, or when it is over 1.2 x the fuse. The fuse comes from the run's meta, not a literal. The 10 s skip after the house's 0.1 A step stays: that stretch belongs to the house, not to Core. The new metric own_commands_over_fuse_heat_samples counts the failing readings, and max_i_own_commands stays as a metric.

Tests

• New TestS18OwnCommandsJudgedByHeat:
  • 16.011 A for 5 s at the line passes.
  • 16.5 A for 30 s at the line heats past the fuse and fails.
  • 16.5 A for 5 s from a cool fuse passes.
  • One reading at 19.1 A passes.
  • One reading at 19.3 A (over 1.2 x 16 A) fails.
• TestS18OwnCommandsSkipTheHouseStep still passes, now with the fuse in meta. Its phases sit at the fuse from the start, so the heat is at the fuse and 16.1 A outside the house step still fails.
• Re-judged a copy of the failed run with FTW_SITE_JUDGE=<copy> go test -run '^TestJudge$' ./test/site/. The result is s18-16: pass, with max_i_own_commands 16.011 and own_commands_over_fuse_heat_samples 0.
• go test -race ./test/site/ (unit only), go vet ./test/site/ and gofmt -l are clean.

Test-only change, so it carries no-changeset.

🤖 Generated with Claude Code

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-28T11:08:08.899275Z	25c0770	PR opened

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