Add GitHub Actions workflow for GitHub Pages deployment

- Add deploy.yml workflow to build and deploy on push to main
- Update baseURL for GitHub Pages
- Add deployment instructions to README

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

Author: Abhigyan Prakash

.github/workflows/deploy.yml

@@ -0,0 +1,50 @@
+name: Deploy Hugo site to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v3
+        with:
+          hugo-version: 'latest'
+          extended: true
+
+      - name: Build
+        run: hugo --minify
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./public
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

README.md

@@ -140,6 +140,19 @@ hugo
 hugo --minify
 ```
 
+## Deployment
+
+The site automatically deploys to GitHub Pages when you push to `main`.
+
+### Setup (one-time)
+
+1. Go to your GitHub repo **Settings** → **Pages**
+2. Under **Build and deployment**, set Source to **GitHub Actions**
+
+### Manual deployment
+
+Push to `main` branch or manually trigger the workflow from the **Actions** tab.
+
 ## Resources
 
 - [Hugo Documentation](https://gohugo.io/documentation/)

hugo.toml

@@ -1,4 +1,4 @@
-baseURL = 'https://example.org/'
+baseURL = 'https://abgnpr.github.io/learning/'
 languageCode = 'en-us'
 title = 'Learning'
 theme = 'hugo-PaperMod'