feat(system-builder): conditions count down by the round (4e2a2)

[over2take]

Each new round of a combat, the initiative tracker counts its tokens' conditions down: every one with rounds left loses one, and those reaching none come off (tokens/conditions.js tickRound, tickCombat). A new round is when the turn order wraps, when the sides wrap in side mode, or in Shadowrun when every pass is spent rather than at the end of each pass. The combat's tokens come from the tracker's ids: npc: for NPC tokens, player: for every token of that player's, each counted once. Every screen redraws the map when any changed.

A new socket request, requestTokenConditions, answers a token's conditions as the viewer may see them, under every system: the GM, the token's owner and a player given a friendly NPC get the rounds left and each condition's modifiers; anyone else gets which conditions, as the token list shows.

Summary

Test plan

• Tested locally
• Tests pass

Pre-merge checklist

Code quality:

• Code follows project style
• No breaking changes (or clearly documented)
• No console errors or warnings

Version & Release:

• Version bumped? If releasing to users, update:
  • frontend/package.json version
  • docker-compose.yml APP_VERSION
  • CHANGELOG.md with release notes
• GitHub Actions will auto-tag Docker images with the new version

Before merging to main:

• All tests passing
• PR reviewed and approved
• Branch is up to date with main
• No merge conflicts

Related issues