Add One-Click Sync for All Connected Accounts

Implement Bulk Trade Synchronization with Single-Click All Accounts Sync.

Users need a streamlined way to synchronize trades from all connected accounts simultaneously instead of having to manually click on each individual account to trigger sync. This feature would add a "Sync All Accounts" button or similar bulk action functionality that initiates trade synchronization across all connected prop firm and personal accounts with a single click. The system should provide real-time sync progress indicators showing which accounts are being updated, display completion status for each account, handle any sync errors gracefully with clear error reporting, and significantly reduce the time and effort required to ensure all account data is current and up-to-date across the entire portfolio.