diff --git a/.gitignore b/.gitignore
index 112c913e1..151252970 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,7 @@ infrastructure/ci/reports/
 
 # Claude Code local config (settings, launch configs)
 .claude/
+
+# Python bytecode
+__pycache__/
+*.py[cod]
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 000000000..209e3ef4b
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+20
diff --git a/Backend/package.json b/Backend/package.json
index aec3bdb9d..3e570dd1a 100644
--- a/Backend/package.json
+++ b/Backend/package.json
@@ -5,6 +5,9 @@
   "author": "",
   "private": true,
   "license": "UNLICENSED",
+  "engines": {
+    "node": ">=20"
+  },
   "scripts": {
     "build": "nest build",
     "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
diff --git a/Frontend/package.json b/Frontend/package.json
index 92a60a7b8..80d889972 100644
--- a/Frontend/package.json
+++ b/Frontend/package.json
@@ -34,5 +34,8 @@
     "eslint-config-next": "15.4.6",
     "tailwindcss": "^4",
     "typescript": "^5"
+  },
+  "engines": {
+    "node": ">=20"
   }
 }
diff --git a/analytics/package.json b/analytics/package.json
index a3e511e14..593489ae9 100644
--- a/analytics/package.json
+++ b/analytics/package.json
@@ -31,5 +31,8 @@
     "tailwindcss": "^4",
     "typescript": "^5",
     "vitest": "^2.0.0"
+  },
+  "engines": {
+    "node": ">=20"
   }
 }
diff --git a/infrastructure/k8s/Chart.yaml b/infrastructure/k8s/Chart.yaml
deleted file mode 100644
index e69de29bb..000000000
diff --git a/infrastructure/scripts/__pycache__/notify-changes.cpython-313.pyc b/infrastructure/scripts/__pycache__/notify-changes.cpython-313.pyc
deleted file mode 100644
index e2a8c87bd..000000000
Binary files a/infrastructure/scripts/__pycache__/notify-changes.cpython-313.pyc and /dev/null differ
diff --git a/infrastructure/scripts/__pycache__/parse-tf-plan.cpython-313.pyc b/infrastructure/scripts/__pycache__/parse-tf-plan.cpython-313.pyc
deleted file mode 100644
index 8ae1580c0..000000000
Binary files a/infrastructure/scripts/__pycache__/parse-tf-plan.cpython-313.pyc and /dev/null differ
diff --git a/package.json b/package.json
index f4245c78f..cbb908d13 100644
--- a/package.json
+++ b/package.json
@@ -5,5 +5,13 @@
   },
   "devDependencies": {
     "husky": "^9.0.0"
+  },
+  "dependencies": {
+    "chart.js": "^4.5.1",
+    "chartjs-plugin-annotation": "^3.1.0",
+    "react-chartjs-2": "^5.3.1"
+  },
+  "engines": {
+    "node": ">=20"
   }
 }