fix: add preserveSymlinks to prevent symlink resolution outside Vite root

Node resolves symlinks to real paths, which may be outside the Vite root.
preserveSymlinks keeps the .content/ symlink path as-is.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rsbh

packages/chronicle/src/server/vite-config.ts

@@ -44,6 +44,7 @@ export async function createViteConfig(
         '@content': path.resolve(packageRoot, '.content'),
       },
       conditions: ['module-sync', 'import', 'node'],
+      preserveSymlinks: true,
       dedupe: [
         'react',
         'react-dom',