refactor: migrate from Neon serverless to node-postgres driver for Drizzle ORM

package.json

@@ -11,7 +11,6 @@
   "dependencies": {
     "@ai-sdk/openai": "^1.1.13",
     "@hookform/resolvers": "^4.1.0",
-    "@neondatabase/serverless": "^0.10.4",
     "@radix-ui/react-accordion": "^1.2.3",
     "@radix-ui/react-avatar": "^1.1.3",
     "@radix-ui/react-collapsible": "^1.1.3",

pnpm-lock.yaml

@@ -14,9 +14,6 @@ importers:
       '@hookform/resolvers':
         specifier: ^4.1.0
         version: 4.1.0(react-hook-form@7.54.2(react@19.0.0))
-      '@neondatabase/serverless':
-        specifier: ^0.10.4
-        version: 0.10.4
       '@radix-ui/react-accordion':
         specifier: ^1.2.3
         version: 1.2.3(@types/react-dom@19.0.3(@types/react@19.0.9))(@types/react@19.0.9)(react-dom@19.0.0(react@19.0.0))(react@19.0.0)
@@ -4299,6 +4296,7 @@ snapshots:
   '@neondatabase/serverless@0.10.4':
     dependencies:
       '@types/pg': 8.11.6
+    optional: true
 
   '@next/env@15.1.7': {}
 
@@ -4969,6 +4967,7 @@ snapshots:
       '@types/node': 20.17.19
       pg-protocol: 1.7.1
       pg-types: 4.0.2
+    optional: true
 
   '@types/react-dom@19.0.3(@types/react@19.0.9)':
     dependencies:

src/db/index.ts

@@ -1,5 +1,11 @@
-import { drizzle } from 'drizzle-orm/neon-http';
+import { drizzle } from 'drizzle-orm/node-postgres';
 
+/**
+ * https://orm.drizzle.team/docs/connect-overview
+ * 
+ * Drizzle ORM runs SQL queries on your database via database drivers.
+ * Under the hood Drizzle will create a node-postgres driver instance.
+ */
 const db = drizzle(process.env.DATABASE_URL!);
 
 export default db;

src/lib/auth.ts

@@ -6,6 +6,9 @@ import { user, session, account, verification } from "@/db/schema";
 export const auth = betterAuth({
   database: drizzleAdapter(db, {
     provider: "pg", // or "mysql", "sqlite"
+    // The schema object that defines the tables and fields
+    // [BetterAuthError]: [# Drizzle Adapter]: The model "verification" was not found in the schema object. 
+    // Please pass the schema directly to the adapter options.
     schema: {
       user: user,
       session: session,