Error thrown inside setTimeout goes nowhere

[Retengart]

Problem

In startBackgroundSync, error is re-thrown inside setTimeout callback.

Current Behavior

// sync.ts:119-131
setTimeout(async () => {
    try {
        await this.handleSyncIndex();
    } catch (error) {
        if (/* unexpected error */) {
            throw error; // Goes nowhere!
        }
    }
}, 5000);

Throwing inside async setTimeout callback doesn't propagate - error is silently lost.

Impact

Unexpected errors during initial sync are swallowed, making debugging difficult.

Expected Behavior

Log error and/or emit event instead of throwing.

Location

• packages/mcp/src/sync.ts:128-129