Add next/prev links to bottom of blog posts

index.tsx

@@ -6,7 +6,7 @@ import { Home } from "./src/frontend/pages/home";
 import { NotFound } from "./src/frontend/pages/not-found";
 import demo from "./temp/appshell.html";
 import { Post } from "./src/frontend/pages/post";
-import { getPostWithTags } from "./src/db/index";
+import { getPostWithTags, getAdjacentPosts } from "./src/db/index";
 
 async function blogPosts(hmr: boolean) {
   const glob = new Bun.Glob("**/*.md");
@@ -29,12 +29,17 @@ async function blogPosts(hmr: boolean) {
             headers: { "Content-Type": "text/html" },
           });
 
+        // Get adjacent posts for navigation
+        const { previousPost, nextPost } = getAdjacentPosts(post.path);
+
         const data = {
           title: post.title,
           summary: post.summary,
           date: new Date(post.date),
           readingTime: post.reading_time,
           tags: post.tags || [],
+          previousPost,
+          nextPost,
         };
 
         // AppShell is already loaded, just send the <main> content
@@ -53,7 +58,10 @@ async function blogPosts(hmr: boolean) {
         return new Response(
           renderToString(
             <AppShell>
-              <Post meta={data} children={post.content} />
+              <Post 
+                meta={data} 
+                children={post.content} 
+              />
             </AppShell>,
           ),
           {

src/db/posts.ts

@@ -163,3 +163,49 @@ export function formatDate(dateString: string): string {
     day: 'numeric'
   });
 }
+
+// Get adjacent posts (previous and next) chronologically for a given post
+export function getAdjacentPosts(currentPostPath: string) {
+  const allPostsQuery = db.query(`
+    SELECT path, title, date
+    FROM posts
+    WHERE path NOT LIKE '%.md'
+    ORDER BY date ASC
+  `);
+
+  const allPosts = allPostsQuery.all() as any[];
+  
+  // Find the current post index
+  const currentIndex = allPosts.findIndex(post => post.path === currentPostPath);
+  
+  // If not found, return empty navigation
+  if (currentIndex === -1) {
+    return { previousPost: null, nextPost: null };
+  }
+
+  // Get previous post (newer date)
+  let previousPost = null;
+  if (currentIndex < allPosts.length - 1) {
+    const prevPost = allPosts[currentIndex + 1];
+    // Clean up the path to match the URL structure
+    const cleanPath = prevPost.path.replace(/^.*\/content\//, '/').replace(/\.md$/, '');
+    previousPost = {
+      title: prevPost.title,
+      path: cleanPath
+    };
+  }
+
+  // Get next post (older date)
+  let nextPost = null;
+  if (currentIndex > 0) {
+    const post = allPosts[currentIndex - 1];
+    // Clean up the path to match the URL structure
+    const cleanPath = post.path.replace(/^.*\/content\//, '/').replace(/\.md$/, '');
+    nextPost = {
+      title: post.title,
+      path: cleanPath
+    };
+  }
+
+  return { previousPost, nextPost };
+}

src/frontend/pages/post.tsx

@@ -1,5 +1,10 @@
 import React from 'react';
 
+interface NavigationPost {
+  title: string;
+  path: string;
+}
+
 interface PostProps {
   // HTML string for the blog post body
   children: string;
@@ -7,10 +12,14 @@ interface PostProps {
     title: string;
     date: Date;
     readingTime: string;
+    previousPost?: NavigationPost | null;
+    nextPost?: NavigationPost | null;
   };
 }
 
 export function Post({ children, meta }: PostProps) {
+    const { previousPost, nextPost } = meta;
+    
     return (
         <main>
           <article className="blog-post">
@@ -39,6 +48,22 @@ export function Post({ children, meta }: PostProps) {
               </div>
             </header>
             <div className="post-content" dangerouslySetInnerHTML={{ __html: children }} />
+            <footer className="post-navigation">
+              <div className="post-nav-links">
+                {previousPost && (
+                  <a href={previousPost.path} className="post-nav-link prev-nav">
+                    <span className="nav-direction">← Previous</span>
+                    <span className="nav-title">{previousPost.title}</span>
+                  </a>
+                )}
+                {nextPost && (
+                  <a href={nextPost.path} className="post-nav-link next-nav">
+                    <span className="nav-direction">Next →</span>
+                    <span className="nav-title">{nextPost.title}</span>
+                  </a>
+                )}
+              </div>
+            </footer>
           </article>
         </main>
     )

src/frontend/styles.css

@@ -914,6 +914,64 @@ h1 {
     margin: 0;
 }
 
+.post-navigation {
+    margin-top: 48px;
+    padding-top: 24px;
+    border-top: 1px solid var(--border-color);
+}
+
+.post-nav-links {
+    display: flex;
+    justify-content: space-between;
+    gap: 16px;
+}
+
+.post-nav-link {
+    display: flex;
+    flex-direction: column;
+    padding: 12px 16px;
+    border-radius: 6px;
+    background-color: var(--sheet-background);
+    border: 1px solid var(--border-color);
+    text-decoration: none;
+    color: var(--text-primary);
+    transition: all 0.2s ease;
+    flex: 1;
+    max-width: 48%;
+}
+
+.post-nav-link:hover {
+    background-color: var(--accent-color);
+    color: var(--accent-text-color);
+    transform: translateY(-2px);
+}
+
+.prev-nav {
+    align-items: flex-start;
+}
+
+.next-nav {
+    align-items: flex-end;
+    text-align: right;
+}
+
+.nav-direction {
+    font-size: 0.875rem;
+    font-weight: 600;
+    margin-bottom: 4px;
+    color: var(--accent-color);
+}
+
+.post-nav-link:hover .nav-direction {
+    color: var(--accent-text-color);
+}
+
+.nav-title {
+    font-size: 1rem;
+    font-weight: 500;
+    line-height: 1.4;
+}
+
 /* Responsive adjustments */
 @media (max-width: 1200px) {
     aside {
@@ -1025,16 +1083,24 @@ h1 {
     }
 
     .post-content h3 {
-        font-size: 20px;
+        font-size: 22px;
+    }
+
+    .post-nav-link {
+        padding: 10px 12px;
+        font-size: 0.9rem;
+    }
+
+    .nav-title {
+        font-size: 0.9rem;
     }
 
     .tag-pills {
-        gap: 6px;
+        display: flex;
     }
 
     .tag-pill {
-        font-size: 12px;
-        padding: 4px 10px;
+        padding: 6px 12px;
     }
 }