Svelte 4.2 to 5.56, Vite 5 to 8, vite-plugin-svelte 3 to 7. The old tree
wouldn't resolve incrementally, because a stale vite-plugin-svelte-inspector
pinned the v3 peer, so this is a clean reinstall.
Clears all 7 npm audit advisories, including a high-severity Rollup path
traversal.
Reactivity moves to runes: $state, $derived, $effect. Event directives
become properties, and main.js uses mount().
Also drops inputElement, a bind:this target nothing ever read.
Aculix Technologies