chore: update eslint.config.js and postcss.config.js

eslint.config.js

@@ -0,0 +1,44 @@
+import js from '@eslint/js';
+import ts from 'typescript-eslint';
+import svelte from 'eslint-plugin-svelte';
+import prettier from 'eslint-config-prettier';
+import globals from 'globals';
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  js.configs.recommended,
+  ...ts.configs.recommended,
+  ...svelte.configs['flat/recommended'],
+  prettier,
+  ...svelte.configs['flat/prettier'],
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.node
+      }
+    }
+  },
+  {
+    files: ['**/*.svelte'],
+    languageOptions: {
+      parserOptions: {
+        parser: ts.parser,
+        svelteFeatures: {
+          experimentalGenerics: true
+        }
+      }
+    }
+  },
+  {
+    ignores: ['build/', '.svelte-kit/', 'dist/', 'test-results/', '*.md', '.vercel/', '.github/', 'node_modules/']
+  },
+  {
+    rules: {
+      // Note: you must disable the base rule as it can report incorrect errors
+      'no-unused-vars': 'off',
+      '@typescript-eslint/no-unused-vars': 'off',
+      'svelte/no-at-html-tags': 'off'
+    }
+  }
+];

postcss.config.js

@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {}
+  }
+};