Introduce a shared token symbol resolver for spot and futures lookups while keeping alpha lookup independent, restoring prefix/remap handling and preserving spot-only fallback behavior.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Replace unreliable WebSocket connections with on-demand REST API calls
for spot and futures prices. Add cached trading pair list (refreshed
hourly) for symbol validation, and /refresh command for manual updates.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add sync.RWMutex to protect future and spot price maps accessed by
WebSocket handlers (writers) and Telegram bot handlers (readers).
Also adds Alpha token support with caching.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
thuanle
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