fix: add custom error handler and fix hydration errors (#88)

Nitro + Vite 8 dev mode doesn't properly serialize HTTPError across the
module runner boundary, causing Parse Error on all 404 API responses.
Custom error handler catches errors inside the runner and returns proper
JSON responses.

Also fixes nested <p> hydration error when MDX content contains raw HTML
<p> tags, and skips prefetching for URLs with file extensions.

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

Author: rsbh

packages/chronicle/src/components/mdx/paragraph.tsx

@@ -1,7 +1,7 @@
 import { Children, isValidElement, type ComponentProps } from 'react'
 import styles from './paragraph.module.css'
 
-const BLOCK_ELEMENTS = new Set(['summary', 'details', 'div', 'table', 'ul', 'ol'])
+const BLOCK_ELEMENTS = new Set(['summary', 'details', 'div', 'table', 'ul', 'ol', 'p'])
 
 function hasBlockChild(children: React.ReactNode): boolean {
   return Children.toArray(children).some(

packages/chronicle/src/lib/preload.ts

@@ -28,8 +28,13 @@ function isApisRoute(pathname: string): boolean {
   return pathname === '/apis' || pathname.startsWith('/apis/');
 }
 
+function hasFileExtension(pathname: string): boolean {
+  const lastSegment = pathname.split('/').pop() ?? '';
+  return lastSegment.includes('.');
+}
+
 export function prefetchPageData(pathname: string) {
-  if (isApisRoute(pathname)) return;
+  if (isApisRoute(pathname) || hasFileExtension(pathname)) return;
   queryClient.prefetchQuery({
     queryKey: pageDataQueryKey(pathname),
     queryFn: () => fetchPageDataByPathname(pathname),

packages/chronicle/src/server/error.ts

@@ -0,0 +1,11 @@
+import { defineErrorHandler, HTTPError } from 'nitro';
+
+export default defineErrorHandler((error, _event) => {
+  const status = HTTPError.isError(error) ? error.status : 500;
+  const message = error.message || 'Internal Server Error';
+
+  return new Response(JSON.stringify({ error: true, status, message }), {
+    status,
+    headers: { 'Content-Type': 'application/json' },
+  });
+});

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

@@ -145,6 +145,7 @@ export async function createViteConfig(
     },
     nitro: {
       logLevel: 2,
+      errorHandler: path.resolve(packageRoot, 'src/server/error.ts'),
       publicAssets: [{ dir: path.resolve(projectRoot, 'public') }],
       output: {
         dir: resolveOutputDir(projectRoot, preset),