fix: finalize API configuration and backend lockfile

backend/package-lock.json

@@ -109,7 +109,6 @@
       "integrity": "sha512-RgHBCvtjbOK2gXSNBNIkNoEc9qoVEtau3hj8gEqKQuL3HZAibKarWFEI3Lfm6EYKkLalOh8eSrj9b+ch9H/VBA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.29.7",
         "@babel/generator": "^7.29.7",
@@ -605,13 +604,39 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@emnapi/wasi-threads": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.2.tgz",
-      "integrity": "sha512-c95qOXkHdydNKhscBTebqEC1CVAZpyqOfVfBzQ1qgzyl3gfeldUjIggDbIZgDKsHLgnsM+igH7TJ/eAasaVuMA==",
+    "node_modules/@emnapi/core": {
+      "version": "1.11.3",
+      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.11.3.tgz",
+      "integrity": "sha512-zLpS5asjEb7lq8jYLq37N6XKaE41DIexlY1rF/z4/tIl3wo13Sqm28fRyfIsKZD+NZ8mM5RoKkpW/rBcuoSZSg==",
       "dev": true,
       "license": "MIT",
       "optional": true,
+      "peer": true,
+      "dependencies": {
+        "@emnapi/wasi-threads": "1.2.3",
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@emnapi/runtime": {
+      "version": "1.11.3",
+      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.11.3.tgz",
+      "integrity": "sha512-Xz4Tpyki7XyrpbUK1jR1AhdAdaXyhhY4lZ3neLodmhpuWfy2PAQN5B46sAiU4liOXGLkHypn/qU+jvfWSCYYLA==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@emnapi/wasi-threads": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.3.tgz",
+      "integrity": "sha512-ELEBe8PsLvvJ6QMr0zLt8ffvOHW/dc1m3CEzNMg7aJUv3bMaoDtw2TXyDAwkYBuroxxuHEwhRTLJSe5sya547g==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
       "dependencies": {
         "tslib": "^2.4.0"
       }
@@ -1963,7 +1988,6 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.20.0.tgz",
       "integrity": "sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.3",
         "fast-uri": "^3.0.1",
@@ -2282,7 +2306,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.10.38",
         "caniuse-lite": "^1.0.30001799",
@@ -3149,7 +3172,6 @@
       "resolved": "https://registry.npmjs.org/express/-/express-5.2.1.tgz",
       "integrity": "sha512-hIS4idWWai69NezIdRt2xFVofaF4j+6INOpJlVOLDO8zXGpUVEVzIYk12UUi2JzjEzWL3IOAxcTubgz9Po0yXw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "accepts": "^2.0.0",
         "body-parser": "^2.2.1",
@@ -5902,7 +5924,6 @@
       "integrity": "sha512-++ZJ0ijLrDJF6hNB4t4uxg2br3fC4H9Yc9tcbjr2fcNFP3rh/SBNrAgjhsqBU4Ght8JPrVofG/ZkXfnSfnYsFg==",
       "hasInstallScript": true,
       "license": "Apache-2.0",
-      "peer": true,
       "dependencies": {
         "@prisma/config": "6.19.3",
         "@prisma/engines": "6.19.3"

frontend/src/services/auth.js

@@ -1,5 +1,5 @@
 const API_URL = import.meta.env.VITE_API_URL || ''
-const BASE = `${API_URL}/api/auth
+const BASE = `${API_URL}/api/auth`
 
 function apiError(message, status) {
   const err = new Error(message)