fix(websocket): bound missing message gap tracking

[AntonBelousovWEB]

Summary

• cap missing WebSocket message tracking at 1,000 IDs
• trigger resync immediately when the cap would be exceeded
• clear pending timers and invoke the timeout handler only once
• add regression coverage for sequential messages, late arrivals, cleanup, and oversized gaps

Testing

• pnpm vitest run src/bonsai/websocket/lib/__test__/missingMessageDetector.test.ts
• pnpm eslint src/bonsai/websocket/lib/missingMessageDetector.ts src/bonsai/websocket/lib/__test__/missingMessageDetector.test.ts
• pnpm tsc --noEmit

[vercel]

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