Files
gogobee/internal/plugin/expedition_sim.go
prosolis ad2a8258ba J3 D8-b: sim picker upcasting + discovery picker is dead since D3
simPickSpell now enumerates one candidate per available slot >= native
for every prepared damage spell, scored via spellExpectedDamage with the
existing "+1 die per slot" scaling. Cantrips contribute a single slot-0
candidate. Tie-break: highest slot first, then highest expDmg. Picker
returns "<id> --upcast N" when the winning slot exceeds native so
parseCombatCast upcasts in the engine. Build + plugin tests green.

Then: measured zero impact. d8b_corpus.jsonl (same 10x5x100 matrix as
d7d) lands every class within +/-1.5pp of d7d baseline.

Root cause discovered post-corpus: simPickSpell is dead code in the
current sim path. Commit 68ed8e7 ("Long expeditions D3: compact
autopilot auto-resolves boss rooms") added a !compact gate at
dnd_expedition_cmd.go:810 so compact autopilot inline-resolves boss/
elite rooms via resolveCombatRoom -> runZoneCombat -> SimulateCombat
instead of returning stopBoss/stopElite for autoResolveCombat to handle.
The sim uses compact=true (expedition_sim.go:433), so autoResolveCombat
- the only caller of simPickCombatAction/simPickSpell - never fires.
Verified empirically: a stderr-traced simPickSpell produced zero hits
across full bard/cleric L10 runs.

This rewrites the picker-era retrospective. J2's baseline_j2a_v2_all10
(bard 40%, cleric 39%) was measured before D3 with the picker live.
d7d's L10 baseline (bard 34%, cleric 21%) is post-D3 with the picker
disconnected - that 6-18pp drop is the post-D3 caster regression, not
"long-expedition mechanics didn't help casters" as d7d framed it.
D8-a's "+2.2pp cleric" was also noise (1sigma ~ 1.8pp on n=500).

D8-b code kept in tree (correct, currently inert, turns on as soon as
the wire reconnects). Plan rewritten in section 8: D8-b and D8-c are
deferred behind D8-prereq, which splits compact so the sim opts out of
compact-inline boss/elite combat without affecting prod rendering.

Files:
- internal/plugin/expedition_sim.go: simPickSpell upcast enumeration
- gogobee_long_expedition_plan.md: D8-b implemented-but-inert,
  D8-prereq added as next step
- sim_results/d8b_corpus.jsonl: 5000-row corpus retained for the
  picker-dead baseline
2026-05-27 22:27:04 -07:00

42 KiB