Streamline Pages workflows and add PR build guard (#129)

* Initial plan

* chore: improve deployment workflows

---------

Co-authored-by: openai-code-agent[bot] <242516109+Codex@users.noreply.github.com>

Author: Codex

.github/workflows/deploy.yml

@@ -3,12 +3,12 @@ name: Deploy David KRK Site
 on:
   push:
     branches: [gh-pages]
+  pull_request:
+    branches: [gh-pages]
   workflow_dispatch:
 
 permissions:
   contents: read
-  pages: write
-  id-token: write
 
 concurrency:
   group: "pages"
@@ -17,6 +17,8 @@ concurrency:
 jobs:
   build:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -34,14 +36,25 @@ jobs:
         run: npm run build
 
       - name: Setup Pages
+        if: github.event_name == 'push'
         uses: actions/configure-pages@v4
 
+      - name: Remove node_modules before upload
+        if: github.event_name == 'push'
+        run: rm -rf node_modules
+
       - name: Upload artifact
+        if: github.event_name == 'push'
         uses: actions/upload-pages-artifact@v3
         with:
           path: '.'
 
   deploy:
+    if: github.event_name == 'push'
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
@@ -50,4 +63,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v4

.github/workflows/jekyll.yml

@@ -1,2 +1,32 @@
-# Workflow désactivé temporairement pour éviter les conflits avec deploy.yml
-# Le workflow deploy.yml gère maintenant tous les déploiements sur gh-pages
+name: Site Build Check (no deploy)
+
+on:
+  pull_request:
+    branches: [gh-pages]
+  schedule:
+    - cron: '0 5 * * 1'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: gh-pages
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci --prefer-offline --no-audit
+
+      - name: Build site assets
+        run: npm run build