chore: fix build dependencies and frontend config

- Bump Docker SDK, downgrade otel deps for Go 1.24 compatibility
- Fix duplicate i18n import in InstanceCard
- Fix SvelteKit prerender/strict config for SPA build
- Update Dockerfile with GOTOOLCHAIN=auto
- Generate package-lock.json and go.sum

WIP: still resolving Go 1.24 vs otel transitive dep versions

web/src/routes/+layout.ts

@@ -1,3 +1,4 @@
 // Disable SSR for static adapter — all rendering happens client-side.
+// Prerender only the SPA shell; dynamic routes use the fallback index.html.
 export const ssr = false;
-export const prerender = true;
+export const prerender = false;