feat(db) - replace dotenv with custom environment variable loader in prisma.config.ts; remove old configuration file

packages/db/prisma.config.ts

@@ -0,0 +1,38 @@
+import path from "path";
+import fs from "fs";
+import { defineConfig } from "prisma/config";
+
+function loadEnvFile(): string | undefined {
+  const candidates = [
+    path.resolve(__dirname, "prisma", ".env"),
+    path.resolve(process.cwd(), "prisma", ".env"),
+    path.resolve(__dirname, ".env"),
+    path.resolve(process.cwd(), ".env"),
+  ];
+
+  for (const p of candidates) {
+    try {
+      if (!fs.existsSync(p)) continue;
+      const content = fs.readFileSync(p, "utf-8");
+      for (const line of content.split("\n")) {
+        const trimmed = line.trim();
+        if (!trimmed || trimmed.startsWith("#")) continue;
+        const eqIdx = trimmed.indexOf("=");
+        if (eqIdx < 0) continue;
+        const key = trimmed.slice(0, eqIdx).trim();
+        const val = trimmed.slice(eqIdx + 1).trim();
+        if (key === "DATABASE_URL") return val;
+      }
+    } catch {}
+  }
+  return process.env.DATABASE_URL;
+}
+
+const url = loadEnvFile();
+
+export default defineConfig({
+  schema: "prisma/schema.prisma",
+  datasource: {
+    url: url!,
+  },
+});