Add Turso/Vercel deployment configuration

- Updated database connection to support Turso auth token
- Added vercel.json with bun build configuration
- Updated environment schema for production deployment
- Added new features and components for production readiness

src/env.js

@@ -12,6 +12,10 @@ export const env = createEnv({
         ? z.string()
         : z.string().optional(),
     DATABASE_URL: z.string().url(),
+    DATABASE_AUTH_TOKEN:
+      process.env.NODE_ENV === "production"
+        ? z.string()
+        : z.string().optional(),
     NODE_ENV: z
       .enum(["development", "test", "production"])
       .default("development"),
@@ -33,6 +37,7 @@ export const env = createEnv({
   runtimeEnv: {
     AUTH_SECRET: process.env.AUTH_SECRET,
     DATABASE_URL: process.env.DATABASE_URL,
+    DATABASE_AUTH_TOKEN: process.env.DATABASE_AUTH_TOKEN,
     NODE_ENV: process.env.NODE_ENV,
   },
   /**