upgrade dependencies and docker builds to npm latest

.env.example

@@ -1,5 +1,6 @@
 # Optional API override. Leave empty to use same-origin internal API routes.
 NEXT_PUBLIC_API_URL=
+NPM_VERSION=latest
 
 # Local docker host port (used by docker-compose.override.yml)
 APP_PORT=3000

Dockerfile

@@ -1,6 +1,8 @@
 FROM node:20-alpine AS base
 
 WORKDIR /app
+ARG NPM_VERSION=latest
+RUN npm install -g "npm@${NPM_VERSION}"
 
 FROM base AS deps
 COPY package.json package-lock.json ./

README.md

@@ -36,6 +36,7 @@ docker compose up --build -d
 For local Docker, host port mapping comes from `docker-compose.override.yml` (default `http://localhost:3000`, configurable via `APP_PORT`).
 For Coolify/remote Docker Compose, only container port `3000` is exposed internally (no fixed host port bind), avoiding host port collisions.
 Runtime data persists in the `app_data` volume (`/app/data` in container).
+Docker builds install the npm version from `NPM_VERSION` (default `latest`).
 
 ## Environment
 

app/globals.css

@@ -1,6 +1,4 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
+@import "tailwindcss";
 
 :root {
   --font-display: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

docker-compose.yml

@@ -4,6 +4,7 @@ services:
       context: .
       dockerfile: Dockerfile
       args:
+        NPM_VERSION: ${NPM_VERSION:-latest}
         NEXT_PUBLIC_API_URL: ${NEXT_PUBLIC_API_URL:-}
     restart: unless-stopped
     env_file:

package.json

@@ -9,10 +9,11 @@
     "lint": "next lint"
   },
   "dependencies": {
+    "@tailwindcss/postcss": "^4.2.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.1.0",
-    "lucide-react": "^0.574.0",
-    "next": "16.1.6",
+    "lucide-react": "^0.575.0",
+    "next": "^16.1.6",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
     "recharts": "^3.7.0"
@@ -23,7 +24,7 @@
     "@types/react-dom": "^19.2.3",
     "autoprefixer": "^10.4.24",
     "postcss": "^8.5.6",
-    "tailwindcss": "^3.4.17",
+    "tailwindcss": "^4.2.1",
     "typescript": "^5.9.3"
   }
 }

postcss.config.js

@@ -1,6 +1,5 @@
 module.exports = {
   plugins: {
-    tailwindcss: {},
-    autoprefixer: {},
+    "@tailwindcss/postcss": {},
   },
 }