feat(db): switch timestamps to timestamptz

[koxudaxi]

TL;DR

Update all timestamp columns in the database to use timezone information.

What changed?

This PR modifies all timestamp columns across database tables to use timestamp with time zone data type instead of the default timestamp without timezone. It also ensures that timestamp columns have a default value of now() where appropriate.

The changes affect the following tables:

• api_keys
• environments
• sessions
• users
• organizations
• organization_memberships
• organization_membership_audit
• projects
• project_memberships
• project_membership_audit
• traces
• spans

How to test?

1. Run database migrations to apply these changes
2. Verify that existing timestamps are correctly converted
3. Create new records and confirm that timestamps are stored with timezone information
4. Check that timezone-aware queries work correctly with the updated schema

Why make this change?

Using timezone-aware timestamps ensures consistent time handling across different environments and regions. This prevents issues with time calculations and comparisons that can occur when timestamps lack timezone information, especially in a distributed system where users or services may be in different timezones.

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	v2-docs	d426fdc	Dec 26 2025, 08:13 AM

[koxudaxi]

• feat(db): switch timestamps to timestamptz #1773 👈 (View in Graphite)
• v2

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