feat: loop simulation with tail overlap

[seoJing]

Summary

• loop simulation playback by loop_period_ticks instead of waiting through an empty post-run gap
• preload projected tail chunks up to max_projected_tick
• render previous-cycle tail and current-cycle start with cycle-scoped ids so returning personas do not all disappear at the same time

Verification

• git diff --check origin/main...HEAD
• security scan on added lines: no hits
• pnpm lint → 0 errors, 6 existing warnings
• pnpm build
• ocr review --audience agent --from origin/main --to HEAD → 0 comments

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Project	Deployment	Actions	Updated (UTC)
frontend	Ready	Preview, Comment	Jun 7, 2026 10:44am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: e1edbe9b-c457-4842-9a61-4e83381971c8

📥 Commits

Reviewing files that changed from the base of the PR and between 56a9f03 and 6e5e67a.

📒 Files selected for processing (6)

• src/entities/spot/sim-stream-types.ts
• src/features/map/client/MapClient.tsx
• src/features/map/model/types.ts
• src/features/simulation/model/sim-clock.ts
• src/features/simulation/model/sim-domain-adapter.ts
• src/features/simulation/model/use-sim-run.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/sim-loop-tail-overlap

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[seoJing]

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Full review finished.