chore(web-player): add prettier and eslint

Flat ESLint config with typescript-eslint and eslint-plugin-svelte,
Prettier with the svelte and tailwindcss plugins. Adds the format and
lint scripts.

Three rules are off on purpose: no-navigation-without-resolve (the app
is served at the root, there is no base path), prefer-svelte-reactivity
(the Set and URLSearchParams uses are local computations, not reactive
state) and no-unused-expressions in .svelte only, where reading a rune
on its own line is how an $effect registers a dependency.

web-player/.prettierignore

@@ -0,0 +1,11 @@
+.DS_Store
+node_modules
+build
+.svelte-kit
+package
+.env
+.env.*
+!.env.example
+package-lock.json
+src/lib/api/schema.d.ts
+static

web-player/.prettierrc

@@ -0,0 +1,14 @@
+{
+	"useTabs": true,
+	"singleQuote": true,
+	"trailingComma": "none",
+	"printWidth": 100,
+	"plugins": ["prettier-plugin-svelte", "prettier-plugin-tailwindcss"],
+	"tailwindStylesheet": "./src/routes/layout.css",
+	"overrides": [
+		{
+			"files": "*.svelte",
+			"options": { "parser": "svelte" }
+		}
+	]
+}

web-player/eslint.config.js

@@ -0,0 +1,41 @@
+import js from '@eslint/js';
+import svelte from 'eslint-plugin-svelte';
+import prettier from 'eslint-config-prettier';
+import globals from 'globals';
+import ts from 'typescript-eslint';
+
+export default ts.config(
+	js.configs.recommended,
+	...ts.configs.recommended,
+	...svelte.configs.recommended,
+	prettier,
+	...svelte.configs.prettier,
+	{
+		languageOptions: {
+			globals: { ...globals.browser, ...globals.node }
+		},
+		rules: {
+			'@typescript-eslint/no-unused-vars': [
+				'error',
+				{ argsIgnorePattern: '^_', varsIgnorePattern: '^_' }
+			],
+			'svelte/no-navigation-without-resolve': 'off',
+			'svelte/prefer-svelte-reactivity': 'off'
+		}
+	},
+	{
+		files: ['**/*.svelte', '**/*.svelte.ts'],
+		languageOptions: {
+			parserOptions: {
+				extraFileExtensions: ['.svelte'],
+				parser: ts.parser
+			}
+		},
+		rules: {
+			'@typescript-eslint/no-unused-expressions': 'off'
+		}
+	},
+	{
+		ignores: ['build/', '.svelte-kit/', 'static/', 'src/lib/api/schema.d.ts']
+	}
+);

web-player/package.json

@@ -0,0 +1,45 @@
+{
+	"name": "web-player",
+	"private": true,
+	"version": "0.0.1",
+	"type": "module",
+	"scripts": {
+		"dev": "vite dev",
+		"build": "vite build",
+		"preview": "vite preview",
+		"prepare": "svelte-kit sync || echo ''",
+		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+		"gen:api": "npx -y openapi-typescript@7 http://localhost:5111/openapi/v1.json -o src/lib/api/schema.d.ts",
+		"format": "prettier --write .",
+		"lint": "prettier --check . && eslint ."
+	},
+	"devDependencies": {
+		"@eslint/js": "^10.0.1",
+		"@sveltejs/kit": "^2.63.0",
+		"@sveltejs/vite-plugin-svelte": "^7.1.2",
+		"@tailwindcss/vite": "^4.3.0",
+		"@types/node": "^22.20.1",
+		"eslint": "^10.7.0",
+		"eslint-config-prettier": "^10.1.8",
+		"eslint-plugin-svelte": "^3.21.0",
+		"globals": "^17.7.0",
+		"prettier": "^3.9.5",
+		"prettier-plugin-svelte": "^4.1.1",
+		"prettier-plugin-tailwindcss": "^0.8.1",
+		"svelte": "^5.56.1",
+		"svelte-check": "^4.6.0",
+		"tailwindcss": "^4.3.0",
+		"typescript": "^6.0.3",
+		"typescript-eslint": "^8.64.0",
+		"vite": "^8.0.16"
+	},
+	"dependencies": {
+		"@fontsource-variable/inter": "^5.2.8",
+		"@lucide/svelte": "^1.23.0",
+		"@sveltejs/adapter-node": "^5.5.7",
+		"jose": "^6.2.3",
+		"openapi-fetch": "^0.17.0",
+		"openid-client": "^6.8.4"
+	}
+}