fix(issue): Enhanced issue/event display + multi-region support

[betegon]

Summary

Improve the display of issue and event details to match Sentry UI quality, and fix multi-region API routing.

Changes

Multi-region fix: Use org-scoped API endpoint for latest event to work across regions.

Enhanced issue display:

• Priority and substatus (Ongoing/Escalating)
• Unhandled indicator
• Assignee info
• Release range with versions

Enhanced event display:

• Full stack traces with code context
• Breadcrumbs timeline
• HTTP request details
• Browser/OS/device info
• User geo location
• Replay links

Implementation

• PR fix(issue): use org-scoped endpoint for latest event + enhanced display #40 implements this feature

Acceptance Criteria

• Issue details show priority, substatus, assignee, releases
• Event details show full stack traces with context
• Breadcrumbs displayed in timeline format
• Works correctly for multi-region organizations

Closes when PR #40 is merged.

[betegon]

done in #40