Add configuration files and update project documentation

- Introduced .editorconfig for consistent coding styles across the project.
- Added .golangci.yml for Go linting configuration.
- Updated AGENTS.md to clarify project structure and components.
- Enhanced CONTRIBUTING.md with Makefile usage for common tasks.
- Updated Dockerfiles to use Go 1.24 and improved build instructions.
- Refined README.md and deployment documentation for clarity.
- Added testing documentation in testing.md for backend and frontend tests.
- Introduced Makefile for streamlined development commands and tasks.

frontend-nuxt/nuxt.config.ts

@@ -1,4 +1,5 @@
 // https://nuxt.com/docs/api/configuration/nuxt-config
+import tailwindcss from '@tailwindcss/vite'
 import { viteUriGuard } from './vite/vite-uri-guard'
 
 export default defineNuxtConfig({
@@ -27,20 +28,18 @@ export default defineNuxtConfig({
     },
   },
 
-  modules: ['@nuxtjs/tailwindcss'],
-  tailwindcss: {
-    cssPath: '~/assets/css/app.css',
-  },
+  modules: ['@nuxt/eslint'],
   css: ['~/assets/css/app.css', 'leaflet/dist/leaflet.css', '~/assets/css/leaflet-overrides.css'],
 
   vite: {
-    plugins: [viteUriGuard()],
+    plugins: [tailwindcss(), viteUriGuard() as never],
     optimizeDeps: {
       include: ['leaflet'],
     },
   },
 
   // Dev: proxy /map API, SSE and grids to Go backend (e.g. docker compose -f docker-compose.dev.yml)
+  // @ts-expect-error nitro types lag behind Nuxt compat v4
   nitro: {
     devProxy: {
       '/map/api': { target: 'http://backend:3080/map/api', changeOrigin: true },