Add digital catalog with shareable flipbook and ktg.montzar.ir deploy files.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/env.ts

@@ -0,0 +1,30 @@
+import path from "node:path";
+
+export type Env = {
+  port: number;
+  apiPort: number;
+  publicBaseUrl: string;
+  storageDir: string;
+  databasePath: string;
+  isProduction: boolean;
+};
+
+export function loadEnv(overrides: Partial<NodeJS.ProcessEnv> = {}): Env {
+  const read = (key: string, fallback: string) =>
+    overrides[key] ?? process.env[key] ?? fallback;
+
+  const isProduction =
+    (overrides.NODE_ENV ?? process.env.NODE_ENV) === "production";
+
+  return {
+    port: Number(read("PORT", "3000")),
+    apiPort: Number(read("API_PORT", "3010")),
+    publicBaseUrl: read("PUBLIC_BASE_URL", "http://localhost:3000").replace(
+      /\/$/,
+      "",
+    ),
+    storageDir: path.resolve(read("STORAGE_DIR", "./storage")),
+    databasePath: path.resolve(read("DATABASE_PATH", "./data/catalogs.sqlite")),
+    isProduction,
+  };
+}