new SessionManager(
   store?, 
   autoPrune?, 
   pruneIntervalMs?): SessionManager;

checkGrant(context): SessionCheckResult;

const result = manager.checkGrant({
  server: 'postgres',
  tool: 'query',
  args: { sql: 'SELECT * FROM users' },
  timestamp: new Date(),
});

if (result.granted) {
  console.log(`Authorized by session grant ${result.grant.id}`);
}

close(): void;

createGrant(input): SessionGrant;

const grant = manager.createGrant({
  context: { server: 'postgres', tool: 'query', args: {}, timestamp: new Date() },
  scope: 'tool',
  duration: '5min',
  grantedBy: 'terminal',
});

formatGrant(grant): string;

getActiveGrants(): SessionGrant[];

getStats(): SessionStats;

pruneExpired(): number;

revokeAll(): void;

revokeByServer(server): number;

revokeGrant(id): boolean;