diff --git a/.gitignore b/.gitignore
index acf06c3c..3727b10b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,9 @@ Cargo.lock
 # Orphan root lockfile causes Next/webpack SyntaxError when present without package.json
 /package-lock.json
 
+# testing
+coverage/
+
 # ──────────────────────────────────────────────────────────────────────────────
 # Next.js
 # ──────────────────────────────────────────────────────────────────────────────
diff --git a/backend/package-lock.json b/backend/package-lock.json
index ae688c0d..097425fe 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -4754,17 +4754,6 @@
         "@types/node": "*"
       }
     },
-    "node_modules/@types/ioredis-mock": {
-      "version": "8.2.7",
-      "resolved": "https://registry.npmjs.org/@types/ioredis-mock/-/ioredis-mock-8.2.7.tgz",
-      "integrity": "sha512-YsGiaOIYBKeVvu/7GYziAD8qX3LJem5LK00d5PKykzsQJMLysAqXA61AkNuYWCekYl64tbMTqVOMF4SYoCPbQg==",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "peerDependencies": {
-        "ioredis": ">=5"
-      }
-    },
     "node_modules/@types/istanbul-lib-coverage": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
@@ -4911,16 +4900,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/react": {
-      "version": "19.2.17",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.17.tgz",
-      "integrity": "sha512-MXfmqaVPEVgkBT/aY0aGCkRWWtByiYQXo3xdQ8r5RzuFrPiRn8Gar2tQdXSUQ2GKV3bkXckek89V8wQBY2Q/Aw==",
-      "license": "MIT",
-      "peer": true,
-      "dependencies": {
-        "csstype": "^3.2.2"
-      }
-    },
     "node_modules/@types/sanitize-html": {
       "version": "2.16.1",
       "resolved": "https://registry.npmjs.org/@types/sanitize-html/-/sanitize-html-2.16.1.tgz",
@@ -6763,13 +6742,6 @@
         "node": ">= 8"
       }
     },
-    "node_modules/csstype": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
-      "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
-      "license": "MIT",
-      "peer": true
-    },
     "node_modules/dataloader": {
       "version": "2.2.3",
       "resolved": "https://registry.npmjs.org/dataloader/-/dataloader-2.2.3.tgz",
@@ -10310,13 +10282,6 @@
         }
       }
     },
-    "node_modules/openapi-types": {
-      "version": "12.1.3",
-      "resolved": "https://registry.npmjs.org/openapi-types/-/openapi-types-12.1.3.tgz",
-      "integrity": "sha512-N4YtSYJqghVu4iek2ZUvcN/0aqH1kRDuNqzcycDxhOUpg7GdvLa2F3DgS6yBNhInhv2r/6I0Flkn7CqL8+nIcw==",
-      "license": "MIT",
-      "peer": true
-    },
     "node_modules/p-limit": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-3.1.0.tgz",
@@ -11063,29 +11028,6 @@
         "destr": "^2.0.5"
       }
     },
-    "node_modules/react": {
-      "version": "19.2.7",
-      "resolved": "https://registry.npmjs.org/react/-/react-19.2.7.tgz",
-      "integrity": "sha512-HNe9WslTbXmFK8o8cmwgAeJFSBvt1bPdHCVKtaaV+WlAN36mpT4hcRpwbf3fY56ar2oIXzsBpOAiIRHAdY0OlQ==",
-      "license": "MIT",
-      "peer": true,
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
-    "node_modules/react-dom": {
-      "version": "19.2.7",
-      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.7.tgz",
-      "integrity": "sha512-t0BRVXvbiE/o20Hfw669rLbMCDWtYZLvmJigy2f0MxsXF+71pxhR3xOkspmsO8h3ZlNzyibAmtCa3l4lYKk6gQ==",
-      "license": "MIT",
-      "peer": true,
-      "dependencies": {
-        "scheduler": "^0.27.0"
-      },
-      "peerDependencies": {
-        "react": "^19.2.7"
-      }
-    },
     "node_modules/react-is-18": {
       "name": "react-is",
       "version": "18.3.1",
@@ -11336,13 +11278,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/scheduler": {
-      "version": "0.27.0",
-      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.27.0.tgz",
-      "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
-      "license": "MIT",
-      "peer": true
-    },
     "node_modules/scrypt-js": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/scrypt-js/-/scrypt-js-3.0.1.tgz",
@@ -12533,7 +12468,7 @@
       "version": "5.9.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
-      "devOptional": true,
+      "dev": true,
       "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
diff --git a/frontend/next.config.ts b/frontend/next.config.ts
index ce0ef99b..54f2b42b 100644
--- a/frontend/next.config.ts
+++ b/frontend/next.config.ts
@@ -11,6 +11,9 @@ const nextConfig: NextConfig = {
   // Ensure recharts/monaco editor packages resolve from frontend node_modules only
   transpilePackages: ['recharts'],
 
+  // Ensure recharts/monaco editor packages resolve from frontend node_modules only
+  transpilePackages: ['recharts'],
+
   // Content Security Policy with nonce-based script loading
   async headers() {
     const cspConfig = getCSPConfig();