- Add source_host/source_port parameters for flexible block polling configuration
- Add import_host/import_port parameters to separate import target from source
- Bypass rate limiting for localhost traffic (127.0.0.1, ::1) in middleware
- Increase rate limit from 200 to 5000 requests per 60s for RPC throughput
- Add receiver ready event to prevent dropping initial block broadcasts
- Add special handling for 429 rate
- Add retry mechanism with exponential backoff for block broadcast loop
- Implement max 5 retries with 2s base delay for RPC connection failures
- Reset retry count on successful connection
- Add 20s wait period after max retries before resetting counter
- Add retry logic for block import with 3 attempts and 1s base delay
- Handle non-200 HTTP responses as exceptions to trigger retries
- Improve error logging
- Add leader_host parameter to ChainSyncService for follower node configuration
- Route block imports to leader node when running as follower
- Add --leader-host CLI argument for follower node setup
- Update get_token_supply to calculate actual values from database
- Replace hardcoded supply values with real account balances and counts
- Calculate circulating supply from actual account balances
- Use total_accounts from database query
