refactor(db): replace DATABASE_URL with individual POSTGRES_* env vars

Eliminates duplicate configuration by building the connection URL
from POSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB, POSTGRES_HOST,
and POSTGRES_PORT instead of requiring a separate DATABASE_URL.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 2 insertions, 5 deletions

diff --git a/drizzle.config.ts b/drizzle.config.ts
index 6fe73ec..0520eb6 100644
--- a/drizzle.config.ts
+++ b/drizzle.config.ts
@@ -1,15 +1,12 @@
 import { defineConfig } from "drizzle-kit";
 
-const databaseUrl = process.env.DATABASE_URL;
-if (!databaseUrl) {
-	throw new Error("DATABASE_URL environment variable is not set");
-}
+const { POSTGRES_USER, POSTGRES_PASSWORD, POSTGRES_DB, POSTGRES_HOST, POSTGRES_PORT } = process.env;
 
 export default defineConfig({
 	out: "./drizzle",
 	schema: "./src/server/db/schema.ts",
 	dialect: "postgresql",
 	dbCredentials: {
-		url: databaseUrl,
+		url: `postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}`,
 	},
 });