perf(candles): avoid sorting history on updates

[AntonBelousovWEB]

Summary

• replace full candle-history filtering and sorting with binary-search insertion
• replace candles with matching timestamps and insert new candles in chronological order
• preserve immutable updates and cover append, replacement, and unordered batches

Benchmark

Single-candle update, local Node 24 benchmark (average per update):

Candles	Before	After
1,000	0.088 ms	0.001 ms
10,000	0.599 ms	0.003 ms
50,000	3.391 ms	0.077 ms

Testing

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

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