🔧 build(ci): skip deploy on pull requests, only build-test

PRs now only run install + build to verify the code compiles.
Deploy to GitHub Pages only happens on push to main.

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

Author: lwinmoepaing

.github/workflows/build.yml

@@ -1,50 +1,36 @@
-# Sample workflow for building and deploying a Next.js site to GitHub Pages
-#
-# To get started with Next.js see: https://nextjs.org/docs/getting-started
-#
-name: Deploying Static Side With Bun And NextJS
+name: Build & Deploy
 
 on:
-  # Runs on pushes targeting the default branch
   push:
     branches: ["main"]
   pull_request:
     branches: ["main"]
-
-  # 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
 
 jobs:
-  # Build job
+  # Build job — runs on both push and PR
   build:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Bun
         uses: oven-sh/setup-bun@v2
-      - name: Setup Pages
-        uses: actions/configure-pages@v5
       - name: Restore cache
         uses: actions/cache@v4
         with:
           path: |
             .next/cache
-          # Generate a new cache whenever packages or source files change.
           key: ${{ runner.os }}-nextjs-${{ hashFiles('**/bun.lockb') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
-          # If source files changed but packages didn't, rebuild from a prior cache.
           restore-keys: |
             ${{ runner.os }}-nextjs-${{ hashFiles('**/bun.lockb') }}-
       - name: Install dependencies
@@ -59,13 +45,19 @@ jobs:
           NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID: ${{ secrets.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID }}
           NEXT_PUBLIC_FIREBASE_APP_ID: ${{ secrets.NEXT_PUBLIC_FIREBASE_APP_ID }}
           NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID: ${{ secrets.NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID }}
+      # Only upload artifact for deployment on push to main
+      - name: Setup Pages
+        if: github.event_name == 'push'
+        uses: actions/configure-pages@v5
       - name: Upload artifact
+        if: github.event_name == 'push'
         uses: actions/upload-pages-artifact@v3
         with:
           path: ./out
 
-  # Deployment job
+  # Deploy job — only runs on push to main, skipped for PRs
   deploy:
+    if: github.event_name == 'push'
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}