feat: add file storage service and update configurations

refactor: migrate to tsup for builds and update tsconfigs
fix: update error handling and validation in payment service
chore: update package scripts and dependencies
docs: update README and env examples

packages/services/package.json

@@ -1,20 +1,39 @@
 {
   "name": "@repo/services",
   "version": "0.0.0",
-  "main": "./src/index.ts",
+  "type": "module",
+  "private": true,
+  "files": ["dist"],
+  "main": "./dist/index.js",
+  "module": "./dist/index.js",
   "types": "./src/index.ts",
   "exports": {
-    ".": "./src/index.ts"
+    ".": {
+      "import": {
+        "types": "./src/index.ts",
+        "default": "./dist/index.js"
+      },
+      "require": {
+        "types": "./src/index.ts",
+        "default": "./dist/index.cjs"
+      }
+    }
+  },
+  "scripts": {
+    "build": "tsup",
+    "dev": "tsup --watch",
+    "check-types": "tsc --noEmit",
+    "clean": "rm -rf dist"
   },
   "dependencies": {
     "@repo/db": "*",
     "@repo/exceptions": "*",
-    "@repo/utils": "*",
     "neverthrow": "^8.2.0",
-    "zod": "^4.0.2"
+    "zod": "^3.25.76"
   },
   "devDependencies": {
     "@repo/typescript-config": "*",
-    "typescript": "^5.0.0"
+    "typescript": "^5.8.3",
+    "tsup": "^8.3.5"
   }
 }