`claude_vs_ai_full_game_transcript` failed: "no AI slot built a unit by turn 10".
Root cause was two test-fixture values diverging from the real engine, both in the
`build_3_player_state_like_harness` construction:
1. `add_player_militarist_inline` never set `PlayerState.race_id`. The real engine
sets it from presentation metadata (api-gdext set_player_presentation ->
p.race_id); the tactical production picker filters race-gated units
(`dwarf_warrior` has race_required="dwarf") by it, so an empty race_id rejected
every unit. Set race_id="dwarf" (Game 1 is all-dwarf).
2. `build_unit_catalog` set `unit_type: "military"` for dwarf_warrior/pikeman, but
`pick_best_unit_of_type` filters on the combat archetype unit_type ∈
{melee,ranged,siege} — the real units JSON uses "melee" (72 melee / 41 ranged /
20 siege across public/resources/units). "military" matched no preferred type.
With either wrong, `pick_best_unit_for_clan` returned None and fell back to the
phantom id "warrior", which the queue classifier (units_catalog keyed by
"dwarf_warrior") then treated as a *building* (Queueable::Item) — so try_spawn_unit
skipped it, no unit ever spawned, no UnitCreated event fired, and the AI bled units
(4->3->2->1) with no replacement. After the fix the AI queues
`Unit { dwarf_warrior }`, spawns via step's try_spawn_unit (units 4->6 by turn 3),
and emits UnitCreated on the wire. Full mc-player-api suite green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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