add eslint + update nextjs to remove a library deprecation warning on dev start

* requires running `bun install` again, or `bun update`

web/eslint.config.mjs

@@ -0,0 +1,16 @@
+import { dirname } from "path";
+import { fileURLToPath } from "url";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+});
+
+const eslintConfig = [
+  ...compat.extends("next/core-web-vitals", "next/typescript"),
+];
+
+export default eslintConfig;

web/package.json

@@ -13,15 +13,18 @@
     "@emotion/styled": "^11.14.0",
     "@mui/icons-material": "^6.1.10",
     "@mui/material": "^6.1.10",
-    "next": "15.0.4",
+    "next": "^15.1.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "sass": "^1.82.0"
   },
   "devDependencies": {
+    "typescript": "^5.7.2",
     "@types/node": "^20.17.9",
     "@types/react": "^19.0.1",
     "@types/react-dom": "^19.0.2",
-    "typescript": "^5.7.2"
+    "eslint": "^9.16.0",
+    "eslint-config-next": "15.1.0",
+    "@eslint/eslintrc": "^3.2.0"
   }
 }

web/tsconfig.json

@@ -6,13 +6,13 @@
     "skipLibCheck": true,
     "strict": true,
     "noEmit": true,
+    "noImplicitAny": true,
     "esModuleInterop": true,
     "module": "esnext",
     "moduleResolution": "bundler",
     "resolveJsonModule": true,
     "isolatedModules": true,
     "jsx": "preserve",
-    "noImplicitAny": true,
     "incremental": true,
     "plugins": [
       {