project_resources hardcoded happiness_pool: 0 (a stub from before the happiness phase
existed). Now that process_happiness_phase computes player.happiness each turn, surface it
in the PlayerView so the headless view exposes it end-to-end (compute → projection → view).
mc-player-api 135/0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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