feat: add favorites panel to meal generator, remove redundant Another one button

- Add clickable favorites counter with expandable panel
- Render saved recipes list with remove button
- Remove duplicate 'Another one' button (Generate already covers it)
- Sync favorite button state when removing from panel

eslint.config.mjs

@@ -0,0 +1,22 @@
+import js from "@eslint/js";
+import tseslint from "typescript-eslint";
+import astro from "eslint-plugin-astro";
+import globals from "globals";
+
+export default [
+  { ignores: ["dist/**", ".astro/**", "node_modules/**", "src/env.d.ts"] },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  ...astro.configs.recommended,
+  {
+    files: ["public/sw.js"],
+    languageOptions: {
+      globals: {
+        ...globals.serviceworker,
+      },
+    },
+    rules: {
+      "@typescript-eslint/no-unused-vars": "off",
+    },
+  },
+];