Archive Permit

How to get
Given during Lighthalzen investigation quest line (lhz_boss progression).

NPC
• Lestin / Researcher#2
• lhz_in01 285,169

Stage
At lhz_boss == 27, Lestin advances your step and gives:
• Archive Permit (7349)

He explains it allows short entry windows to the Secret Archive (about 3 minutes each attempt).