Vouch request: jkugsiya, .env.local precedence fix (#2999) #5008

Why do you want to contribute?

I'd like to fix #2999. trigger.dev dev loads .env before .env.local without override, so the first value wins. I'll enable override so later files win as the docs describe, add a test, and check the second place that loads the same files.

Prior contributions or relevant experience

I build TypeScript backends on Node and Bun. Open PRs on better-auth:

• fix(session): do not restore a revoked session from a stale cache better-auth/better-auth#11601
• feat(passkey): add getUserHandle for a stable WebAuthn user handle better-auth/better-auth#11599