Add full multi-step decision workflow for SINGLE_UNCAPPED and DOUBLE_UNCAPPED
outcomes, replacing the previous stub that fell through to basic single/double
advancement. The decision tree follows the same interactive pattern as X-Check
resolution with 5 phases: lead runner advance, defensive throw, trail runner
advance, throw target selection, and safe/out speed check.
- game_models.py: PendingUncappedHit model, 5 new decision phases
- game_engine.py: initiate_uncapped_hit(), 5 submit methods, 3 result builders
- handlers.py: 5 new WebSocket event handlers
- ai_opponent.py: 5 AI decision stubs (conservative defaults)
- play_resolver.py: Updated TODO comments for fallback paths
- 80 new backend tests (2481 total): workflow (49), handlers (23), truth tables (8)
- Fix GameplayPanel.spec.ts: add missing Pinia setup, fix component references
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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