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soroban-abacus-flashcards/apps/web
Thomas Hallock c5fba5b7dd feat(complement-race): implement position broadcasting for ghost trains
Clients now broadcast their train position to server every 200ms,
allowing other clients to render ghost trains at correct locations.

Added UPDATE_POSITION move type and server-side validation to sync
client-calculated positions (from momentum physics) to server state.

This fixes the issue where ghost trains were rendering but invisible
because they all had position=0 from server.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-22 12:08:19 -05:00
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