Sim: short-rest between rooms; H5 alone doesn't close caster gap

autoResolveCombat now calls maybeShortRest after a won fight (HP < 60%
or any slots used, charges > 0), mirroring what a competent prod player
does between rooms. Re-baseline at n=100 across the full 10×3×5 matrix
written to baseline_h5sim_all10.jsonl.

Headline (vs baseline_j2a_v2_all10.jsonl, full delta in h5sim_findings.md):
mage L12 manor +8pp, cleric L12 manor +7pp, but bard L12 manor stays at
1pp and bard/cleric L12 underdark still 0. J2c (defaultKnownSpells
damage option at L3+ for bard, L4+ for cleric) is still the lever for
the trailers. Four borderline -9pp regressions on n=100 cells; flagged
for an n=300 re-run before declaring a sim defect.

sim_results/h5sim_findings.md

@@ -0,0 +1,39 @@
+# H5-sim re-baseline — does prod short-rest close the caster gap?
+
+**Corpus:** `baseline_h5sim_all10.jsonl` (15k rows, n=100). Summary table: `h5sim_all10_summary.txt`. **Baseline for comparison:** `baseline_j2a_v2_all10.jsonl` (J2b).
+
+## TL;DR
+
+**No.** Wiring short-rest into the sim between rooms gives mage L12 manor a real lift (+8pp clear rate) but does not move the bard/cleric trailers in the cells that matter:
+
+| class  | lvl | zone             | J2b %clr | H5sim %clr |  Δ |
+| ------ | --- | ---------------- | -------: | ---------: | -: |
+| bard   | 12  | manor_blackspire |        2 |          1 | −1 |
+| cleric | 12  | manor_blackspire |        9 |         16 | +7 |
+| bard   | 12  | underdark        |        0 |          0 |  0 |
+| cleric | 12  | underdark        |        0 |          0 |  0 |
+| mage   | 12  | manor_blackspire |       49 |         57 | +8 |
+
+J2c (defaultKnownSpells widening — bard damage option at L3+, cleric at L4+) is still the lever. The hypothesis that H5 alone would close it is falsified.
+
+## Notable regressions (n=100, ~±10pp 95% CI — borderline)
+
+| class    | lvl | zone             | J2b %clr | H5sim %clr |  Δ |
+| -------- | --- | ---------------- | -------: | ---------: | -: |
+| warlock  | 12  | manor_blackspire |       34 |         25 | −9 |
+| sorcerer | 12  | manor_blackspire |       47 |         38 | −9 |
+| cleric   |  3  | goblin_warrens   |       15 |          6 | −9 |
+| ranger   |  3  | goblin_warrens   |       64 |         54 | −10 |
+
+n=100 standard error on a 50/50 cell is ~5pp, so these are ~2σ. Could be real (the picker prefers high-tier slots and short-rest refreshes low-tier first, so a mid-zone short rest may flush the high-tier-slot budget by encouraging more L2/L3 spends), or noise. Re-run at n=300 to disambiguate before declaring this a sim defect.
+
+## Cells that lifted
+
+Mage L12 manor +8, cleric L12 manor +7, fighter L3 goblin +10, druid L7 forest +8, sorcerer L7 forest +4, mage L7 goblin +3. Pattern: classes that already had viable damage rosters benefited; classes whose damage rosters are thin (bard/cleric) did not.
+
+## Verdict
+
+- Ship H5+sim short-rest as-is — the prod fix (full-HP gate loosened) is correct independently and the sim now reflects what a competent player does.
+- J2c (defaultKnownSpells widening) is still required to lift bard/cleric trailers.
+- T5 dragons_lair untouched (0% across all 10 classes) — J3 territory.
+- Re-baseline at n=300 on the four borderline regressions before tuning the picker.