fix(tpl): resolve broken assets on GitHub Pages subdirectory deployments

Add `actions/configure-pages` step to all template build workflows and
pass the detected base_url to `hugo --baseURL`, so sites deployed to
subdirectory paths (e.g. user.github.io/repo-name/) generate correct
asset URLs. Also fix leading-slash relURL calls in slides layout that
would ignore the baseURL path component.

modules/slides/layouts/slides/single.html

@@ -100,7 +100,7 @@
   <div class="container mx-auto px-4 sm:px-6 max-w-5xl py-12" x-data="{ copied: false, showCitation: false, copyText: {{ $copy_link_label | jsonify }}, citationCopied: false, citationCopyText: {{ $copy_citation_label | jsonify }}, citationValue: {{ $citation_copy | jsonify }} }">
     
     {{/* Back to library link */}}
-    <a href="{{ "/slides/" | relURL }}" class="inline-flex items-center gap-2 text-sm text-zinc-600 dark:text-zinc-400 hover:text-primary-600 dark:hover:text-primary-400 mb-6 transition-colors">
+    <a href="{{ "slides/" | relURL }}" class="inline-flex items-center gap-2 text-sm text-zinc-600 dark:text-zinc-400 hover:text-primary-600 dark:hover:text-primary-400 mb-6 transition-colors">
       <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 19l-7-7m0 0l7-7m-7 7h18"/>
       </svg>
@@ -195,7 +195,7 @@
           <h2 class="text-lg font-semibold text-zinc-900 dark:text-zinc-100 mb-2">{{ $topics_label }}</h2>
           <div class="flex flex-wrap gap-2">
             {{ range $topics }}
-            <a href="{{ "/slides/" | relURL }}" class="px-3 py-1 rounded-full text-sm font-medium bg-zinc-100 dark:bg-zinc-800 text-zinc-700 dark:text-zinc-300 hover:bg-primary-100 dark:hover:bg-primary-900/40 hover:text-primary-700 dark:hover:text-primary-300 transition-colors">
+            <a href="{{ "slides/" | relURL }}" class="px-3 py-1 rounded-full text-sm font-medium bg-zinc-100 dark:bg-zinc-800 text-zinc-700 dark:text-zinc-300 hover:bg-primary-100 dark:hover:bg-primary-900/40 hover:text-primary-700 dark:hover:text-primary-300 transition-colors">
               {{ . }}
             </a>
             {{ end }}

templates/academic-cv/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/data-science-blog/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/dev-portfolio/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/documentation/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/link-in-bio/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/markdown-slides/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/resume/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |

templates/startup-landing-page/.github/workflows/build.yml

@@ -112,13 +112,17 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-hugo-resources-
 
+    - name: Setup Pages
+      id: pages
+      uses: actions/configure-pages@v5
+
     - name: Build with Hugo
       env:
         HUGO_ENVIRONMENT: production
         HUGO_BLOX_LICENSE: ${{ secrets.HUGO_BLOX_LICENSE }}
       run: |
         echo "Hugo Cache Dir: $(hugo config | grep cachedir)"
-        hugo --minify
+        hugo --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
 
     - name: Generate Pagefind search index (if applicable)
       run: |