fix: add default resolve conditions to prevent server-side Svelte resolution

The `vite-plugin-solid` config hook sets `resolve.conditions` to
`['solid', 'development']`, replacing Vite's defaults which include
`browser` and `module`. Without `browser`, Svelte's package exports
resolve to `index-server.js` instead of `index-client.js`, causing
`mount(...)` to throw "not available on the server" in the browser.

Add `['module', 'browser', 'development']` to the base Vite config so
framework plugins append to these defaults rather than replacing them.

https://claude.ai/code/session_01DyKgnqFPLT1z1z4ewaEtMT

Author: claude

packages/iles/src/client/app/components/Island.vue

@@ -138,7 +138,7 @@ hydrate(framework, component, '${this.id}', ${serialize(props)}, ${serialize(slo
 
     const ileRoot = h('ile-root', ileAttrs, prerenderIsland())
 
-    if (this.strategy === Hydrate.None)
+    if (isSSR && this.strategy === Hydrate.None)
       return ileRoot
 
     return [

packages/iles/src/node/config.ts

@@ -288,6 +288,7 @@ function viteConfigDefaults (root: string, userConfig: UserConfig): ViteOptions
     root,
     resolve: {
       alias: resolveAliases(root, userConfig),
+      conditions: ['module', 'browser', 'development'],
       dedupe: ['vue', 'vue-router', '@unhead/vue', '@vue/devtools-api'],
     },
     server: {