fix: correct user and patch info in instance info command

[jacebenson]

Closes #30

Problem

jsn instance info was showing:

• Wrong user (survey.user instead of the logged-in user)
• Empty patch and build date

Root cause

• User was fetched by querying sys_user with no filter, returning the first record in the table
• Patch and build date weren't being parsed from mid.version

Fix

• Use GetCurrentUser() to get the actual authenticated user
• Parse patch from mid.version string (e.g., __patch1-... → patch 1)
• Extract build date from version string
• Query additional properties: glide.builddate, glide.patch, glide.sys.default.tz

Before

User: survey.user
Patch: (empty)
Build Date: (empty)

After

User: admin
Patch: 1
Build Date: 03-31-2026