.github/copilot-instructions.md

@@ -1,59 +0,0 @@
-# Copilot Instructions for n-daisuke897-blog
-
-## Project Overview
-This is a personal blog named "Naputo" built with Astro and Preact. The blog is designed to publish articles and content with a modern static site generation approach.
-
-**Repository**: https://git.n-daisuke897.com/nakada0907/n-daisuke897-blog
-
-## Tech Stack
-- **Framework**: Astro 5.x
-- **UI Library**: Preact 10.x for interactive components
-- **Language**: TypeScript
-- **Build Tool**: Astro CLI
-- **RSS**: @astrojs/rss for RSS feed generation
-- **Linting**: ESLint with TypeScript and Astro plugins
-
-## Project Structure
-- `src/`: Source code
-  - `pages/`: Astro pages (routing based on file structure)
-  - `layouts/`: Layout components
-  - `components/`: Reusable components
-  - `blog/`: Blog content
-  - `styles/`: Global styles
-  - `scripts/`: Utility scripts
-  - `content.config.ts`: Content collection configuration
-- `public/`: Static assets (images, fonts, etc.)
-- `dist/`: Build output directory
-- `buildspec.yml`: AWS CodeBuild configuration
-
-## Development Guidelines
-
-### Commands
-- `npm install`: Install dependencies
-- `npm run dev`: Start local development server at `localhost:4321`
-- `npm run build`: Build production site to `./dist/`
-- `npm run preview`: Preview production build locally
-- `npm run astro`: Run Astro CLI commands
-
-### Coding Standards
-- Use TypeScript for all new code
-- Follow the ESLint configuration provided
-- Use Preact components for interactive UI elements
-- Keep components modular and reusable
-- Use Astro's component syntax for static content
-
-### File Naming
-- Use kebab-case for file names
-- Use PascalCase for component names
-- Use `.astro` extension for Astro components
-- Use `.tsx` extension for Preact components
-
-### Best Practices
-- Prefer static generation over client-side rendering when possible
-- Use Astro's content collections for blog posts
-- Optimize images and assets before adding to `public/`
-- Keep bundle size minimal - Astro ships zero JS by default
-- Use Preact only when client interactivity is needed
-
-## Deployment
-This project uses AWS CodeBuild for deployment (see `buildspec.yml`).

amplify-stack.yaml

@@ -0,0 +1,61 @@
+AWSTemplateFormatVersion: '2010-09-09'
+Description: 'CloudFormation template for deploying Astro site to AWS Amplify'
+
+Parameters:
+  GitHubAccessToken:
+    Type: String
+    NoEcho: true
+    Description: GitHub Access token for repository access
+
+Resources:
+  AmplifyApp:
+    Type: AWS::Amplify::App
+    UpdateReplacePolicy: Delete
+    DeletionPolicy: Delete
+    Properties:
+      Name: blog_daisuke_nakahara
+      Repository: https://github.com/Daisuke897/blog_daisuke_nakahara
+      AccessToken: !Ref GitHubAccessToken
+      Platform: WEB
+      BuildSpec: |
+        version: 1
+        frontend:
+          phases:
+            preBuild:
+              commands:
+                - npm ci --cache .npm --prefer-offline
+            build:
+              commands:
+                - npm run build
+          artifacts:
+            baseDirectory: dist
+            files:
+              - '**/*'
+          cache:
+            paths:
+              - .npm/**/*
+      CustomRules:
+        - Source: '</^[^.]+$|\.(?!(css|gif|ico|jpg|js|png|txt|svg|woff|woff2|ttf|map|json)$)([^.]+$)/'
+          Target: '/index.html'
+          Status: '404-200'
+      EnableBranchAutoDeletion: false
+      CustomHeaders: ''
+
+  AmplifyBranch:
+    Type: AWS::Amplify::Branch
+    UpdateReplacePolicy: Delete
+    DeletionPolicy: Delete
+    Properties:
+      AppId: !GetAtt AmplifyApp.AppId
+      EnableAutoBuild: true
+      EnablePullRequestPreview: false
+      EnablePerformanceMode: false
+      Stage: PRODUCTION
+      BranchName: main
+      Framework: Astro
+
+Outputs:
+
+  AppId:
+    Description: 'Amplify App ID'
+    Value: !GetAtt AmplifyApp.AppId

src/blog/post-5.md

@@ -1,64 +0,0 @@
----
-title: 'Fixing GitHub Copilot CLI System Vault Error with systemd'
-pubDate: 2026-01-02
-author: 'Nakahara Daisuke'
-tags: ["GitHub", "AI"]
----
-
-When installing GitHub Copilot CLI, you may encounter the error message: `The system vault (keychain, keyring, password manager, etc.) is not available. You may need to install one.` The solution was documented in [this issue](https://github.com/github/copilot-cli/issues/49).
-
-This article explains how to resolve this issue using `systemd`.
-
-### Install via Apt
-
-```bash
-$ sudo apt update
-```
-```bash
-$ sudo apt install -y \
-  gnome-keyring \
-  libsecret-1-0 \
-  libsecret-tools \
-  seahorse
-```
-
-### Verify systemd is running
-```bash
-$ systemctl is-system-running
-```
-
-### Check if the user service is enabled
-```bash
-$ systemctl --user status gnome-keyring-daemon
-○ gnome-keyring-daemon.service - GNOME Keyring daemon
-     Loaded: loaded (/usr/lib/systemd/user/gnome-keyring-daemon.service; enabled; preset: enabled)
-     Active: inactive (dead)
-TriggeredBy: ○ gnome-keyring-daemon.socket
-```
-```bash
-$ systemctl --user enable gnome-keyring-daemon
-```
-```bash
-$ systemctl --user start gnome-keyring-daemon
-```
-```bash
-$ systemctl --user status gnome-keyring-daemon
-● gnome-keyring-daemon.service - GNOME Keyring daemon
-     Loaded: loaded (/usr/lib/systemd/user/gnome-keyring-daemon.service; enabled; preset: enabled)
-     Active: active (running) since Fri 2026-01-02 08:36:46 JST; 3s ago
- Invocation: d830e5563e974edc9265650d11dfa086
-TriggeredBy: ● gnome-keyring-daemon.socket
-   Main PID: 5222 (gnome-keyring-d)
-      Tasks: 5 (limit: 9422)
-     Memory: 3.4M (peak: 3.9M)
-        CPU: 37ms
-     CGroup: /user.slice/user-1000.slice/user@1000.service/app.slice/gnome-keyring-daemon.service
-             └─5222 /usr/bin/gnome-keyring-daemon --foreground --components=pkcs11,secrets --control-directory=/run/user/1000/keyring
-
-Jan 02 08:36:46 hostname systemd[649]: Started gnome-keyring-daemon.service - GNOME Keyring daemon.
-Jan 02 08:36:46 hostname gnome-keyring-daemon[5222]: GNOME_KEYRING_CONTROL=/run/user/1000/keyring
-Jan 02 08:36:46 hostname gnome-keyring-daemon[5222]: another secret service is running
-Jan 02 08:36:46 hostname gnome-keyring-d[5222]: another secret service is running
-```
-
-> **Note**: This article was translated from Japanese to English and reviewed with the assistance of AI (GitHub Copilot).

src/components/Footer.astro

@@ -16,5 +16,5 @@
 </style>
 
 <footer>
-    <p class="legal-information">&copy; 2026 Nakahara Daisuke — Built with <a href="https://astro.build" target="_blank" rel="noopener">Astro</a></p>
+    <p class="legal-information">&copy; 2025 Nakahara Daisuke</p>
 </footer>

src/components/Navigation.astro

@@ -7,7 +7,7 @@
     <a href="/about/">About</a>
     <a href="/blog/">Articles</a>
     <a href="/tags/">Tags</a>
-    <a href="https://git.n-daisuke897.com/nakada0907/" target="_blank">
+    <a href="https://git.n-daisuke897.com/" target="_blank">
         <img src="/icon/simple-icons--forgejo.svg" alt="Forgejo Icon">
     </a>
 </div>

src/layouts/MarkdownPostLayout.astro

@@ -49,27 +49,18 @@ const optionsForDate = {
 
   .markdown-content {
     font-family: sans-serif;
-    font-size: 1.1rem;
-    line-height: 1.8;
+    font-size: 1.2rem;
+    line-height: 2.5;
   }
 
   .markdown-content h1 {
-    font-size: 1.6rem;
-    margin-top: 2rem;
-    margin-bottom: 1rem;
-    line-height: 1.3;
+    font-size: 1.9rem;
   }
   .markdown-content h2 {
-    font-size: 1.4rem;
-    margin-top: 1.8rem;
-    margin-bottom: 0.8rem;
-    line-height: 1.3;
+    font-size: 1.75rem;
   }
   .markdown-content h3 {
-    font-size: 1.2rem;
-    margin-top: 1.5rem;
-    margin-bottom: 0.6rem;
-    line-height: 1.3;
+    font-size: 1.5rem;
   }
 
 </style>

src/pages/index.astro

@@ -4,7 +4,6 @@ import BlogPost from "../components/BlogPost.astro";
 import { getCollection } from "astro:content";
 const pageTitle = "Naputo";
 const allPosts = await getCollection("blog");
-const sortedPosts = allPosts.sort((a, b) => b.data.pubDate.valueOf() - a.data.pubDate.valueOf());
 ---
 
 <style>
@@ -42,7 +41,7 @@ const sortedPosts = allPosts.sort((a, b) => b.data.pubDate.valueOf() - a.data.pu
 	<h3 class="header-new-posts">New Posts</h3>
 	<div class="new-articles">
 		{
-			sortedPosts.slice(0, 5).map((post: any) => (
+			allPosts.slice(0, 6).map((post: any) => (
 				<BlogPost
 					url={`/posts/${post.id}/`}
 					title={post.data.title}