chore: set up Makefile, linting, and dockerized dev shell

client/package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "vite",
     "build": "vite build",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "lint": "eslint . --ext .js, .vue --fix"
   },
   "dependencies": {
     "@solana/web3.js": "^1.98.4",
@@ -21,8 +22,10 @@
   "devDependencies": {
     "@vitejs/plugin-vue": "^6.0.1",
     "autoprefixer": "^10.4.17",
+    "eslint": "^8.56.0",
+    "eslint-plugin-vue": "^9.21.1",
     "postcss": "^8.4.33",
     "tailwindcss": "^3.4.17",
     "vite": "^7.2.4"
   }
-}
+}