From 061f266b18eced41f1cb6339c0d58ed85265c749 Mon Sep 17 00:00:00 2001
From: lorentz <lorentz@wulfconsulting.com>
Date: Thu, 7 May 2026 07:36:35 -0400
Subject: [PATCH] feat(07.1-01): expose user timezone on Better Auth session
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- Adds `timezone` to additionalFields on the auth `user` config
- Default value reads process.env.DEFAULT_TIMEZONE (falls back to "UTC")
- session.user.timezone now available on every authenticated request
- Inferred User type automatically picks up the new field — no type changes needed
---
 lib/auth.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/auth.ts b/lib/auth.ts
index 12c17e5..f8eea01 100644
--- a/lib/auth.ts
+++ b/lib/auth.ts
@@ -92,6 +92,10 @@ export const auth = betterAuth({
         type: "boolean",
         defaultValue: false,
       },
+      timezone: {
+        type: "string",
+        defaultValue: process.env.DEFAULT_TIMEZONE || "UTC",
+      },
     },
   },
 });