feat: migrate portfolio site from Jekyll to Astro

- Astro 5.x with Tailwind CSS v4 and TypeScript
- Dark-mode-first design with emerald accents
- Content collections for blog posts (43) and notes (79)
- Homepage with excerpts and tag cloud sidebar
- Blog archive with clickable tag filters and search
- Individual post pages with TOC and tag cloud sidebar
- Command palette (Cmd+K) using cmdk library
- Static pages: About, Contact, Reading List, Writing, Videos
- Notes masonry grid for tweet archive
- Case studies collection (seeded with 2 examples)
- SEO: sitemap, robots.txt, RSS feed, Open Graph
- URL redirects for legacy Jekyll URLs
- GitHub Actions deployment workflow

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: rockoder

.github/workflows/deploy.yml

@@ -0,0 +1,70 @@
+# Astro deployment workflow for GitHub Pages
+name: Deploy Astro site to Pages
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: ["master"]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+env:
+  BUILD_PATH: "."
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: npm
+          cache-dependency-path: ${{ env.BUILD_PATH }}/package-lock.json
+
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v5
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: ${{ env.BUILD_PATH }}
+
+      - name: Build with Astro
+        run: |
+          npm run build
+        working-directory: ${{ env.BUILD_PATH }}
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ${{ env.BUILD_PATH }}/dist
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    needs: build
+    runs-on: ubuntu-latest
+    name: Deploy
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -1,9 +1,34 @@
-_site
-.sass-cache
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+.astro/
+
+# Jekyll (legacy)
+_site/
+.sass-cache/
+.jekyll-cache/
 .jekyll-metadata
 
+# Environment variables
+.env
+.env.*
+!.env.example
+
 # IDE
+.vscode/
 .idea/
+*.swp
+*.swo
 
-# macOS
+# OS files
 .DS_Store
+Thumbs.db
+
+# Python virtual environment
+.venv/
+
+# Logs
+*.log
+npm-debug.log*

astro.config.mjs

@@ -0,0 +1,30 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+import tailwindcss from '@tailwindcss/vite';
+import react from '@astrojs/react';
+import sitemap from '@astrojs/sitemap';
+
+// Legacy URL redirects (generated by migration script)
+import { legacyRedirects } from './src/data/redirects.ts';
+
+// https://astro.build/config
+export default defineConfig({
+  site: 'https://www.rockoder.com',
+  output: 'static',
+  integrations: [
+    react(),
+    sitemap(),
+  ],
+  vite: {
+    plugins: [tailwindcss()],
+  },
+  markdown: {
+    shikiConfig: {
+      theme: 'github-dark',
+      wrap: true,
+    },
+  },
+  redirects: {
+    ...legacyRedirects,
+  },
+});