Hide al-folio demo content from search and listings, update profile photo

profhannahchang · claude · profhannahchang · commit be8b23888202 · 2026-02-23T04:34:06.000+08:00
- Add search_exclude frontmatter flag to 46 demo files (posts, projects,
  news, teachings, book) to hide them from search and listing pages
- Filter search_exclude items in search index, blog, projects, news,
  courses, latest posts, related posts, and bookshelf templates
- Replace profile photo with new corporate headshot
- Remove padding-top on profile image that caused white bar

Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/_books/the_godfather.md b/_books/the_godfather.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: book-review
 title: The Godfather
 author: Mario Puzo
diff --git a/_includes/courses.liquid b/_includes/courses.liquid
@@ -7,6 +7,7 @@
       <div class="course-list">
         {% assign year_courses = year_group.items | sort: 'term' %}
         {% for course in year_courses %}
+          {% unless course.search_exclude %}
           <div class="course-item">
             <h3 class="course-title">
               <a href="{{ course.url | relative_url }}">{{ course.title }}</a>
@@ -28,6 +29,7 @@
               </div>
             {% endif %}
           </div>
+          {% endunless %}
         {% endfor %}
       </div>
     {% endfor %}
diff --git a/_includes/latest_posts.liquid b/_includes/latest_posts.liquid
@@ -15,6 +15,7 @@
           {% assign latest_posts_limit = latest_posts_size %}
         {% endif %}
         {% for item in latest_posts limit: latest_posts_limit %}
+          {% unless item.search_exclude %}
           <tr>
             <th scope="row" style="width: 20%">{{ item.date | date: '%b %d, %Y' }}</th>
             <td>
@@ -39,6 +40,7 @@
               {% endif %}
             </td>
           </tr>
+          {% endunless %}
         {% endfor %}
       </table>
     </div>
diff --git a/_includes/news.liquid b/_includes/news.liquid
@@ -15,6 +15,7 @@
           {% assign news_limit = news_size %}
         {% endif %}
         {% for item in news limit: news_limit %}
+          {% unless item.search_exclude %}
           <tr>
             <th scope="row" style="width: 20%">{{ item.date | date: '%b %d, %Y' }}</th>
             <td>
@@ -25,6 +26,7 @@
               {% endif %}
             </td>
           </tr>
+          {% endunless %}
         {% endfor %}
       </table>
     </div>
diff --git a/_includes/related_posts.liquid b/_includes/related_posts.liquid
@@ -1,5 +1,6 @@
 {% assign have_related_posts = false %}
 {% for post in site.related_posts | limit: site.related_blog_posts.max_related %}
+  {% if post.search_exclude %}{% continue %}{% endif %}
   {% unless have_related_posts %}
     {% assign have_related_posts = true %}
     {% if page.layout == 'post' %}
diff --git a/_layouts/book-shelf.liquid b/_layouts/book-shelf.liquid
@@ -7,6 +7,7 @@ layout: page
   {% assign collection = site[page.collection] %}
   {% if collection and collection.size > 0 %}
     {% for item in collection reversed %}
+      {% if item.search_exclude %}{% continue %}{% endif %}
       {% assign current_year = item.started | date: '%Y' %}
       {% if current_year != year %}
         {% unless forloop.first %}
diff --git a/_news/announcement_1.md b/_news/announcement_1.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 date: 2015-10-22 15:59:00-0400
 inline: true
diff --git a/_news/announcement_2.md b/_news/announcement_2.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: A long announcement with details
 date: 2015-11-07 16:11:00-0400
diff --git a/_news/announcement_3.md b/_news/announcement_3.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 date: 2016-01-15 07:59:00-0400
 inline: true
diff --git a/_pages/about.md b/_pages/about.md
@@ -7,7 +7,7 @@ subtitle: >
 
 profile:
   align: right
-  image: prof_pic.jpg
+  image: prof_pic.png
   image_circular: false # crops the image to make it circular
   more_info: >
 
diff --git a/_pages/blog.md b/_pages/blog.md
@@ -56,7 +56,7 @@ pagination:
   </div>
   {% endif %}
 
-{% assign featured_posts = site.posts | where: "featured", "true" %}
+{% assign featured_posts = site.posts | where: "featured", "true" | where_exp: "item", "item.search_exclude != true" %}
 {% if featured_posts.size > 0 %}
 <br>
 
@@ -110,6 +110,7 @@ pagination:
     {% endif %}
 
     {% for post in postlist %}
+    {% if post.search_exclude %}{% continue %}{% endif %}
 
     {% if post.external_source == blank %}
       {% assign read_time = post.content | number_of_words | divided_by: 180 | plus: 1 %}
diff --git a/_pages/projects.md b/_pages/projects.md
@@ -17,7 +17,7 @@ horizontal: false
   <a id="{{ category }}" href=".#{{ category }}">
     <h2 class="category">{{ category }}</h2>
   </a>
-  {% assign categorized_projects = site.projects | where: "category", category %}
+  {% assign categorized_projects = site.projects | where: "category", category | where_exp: "item", "item.search_exclude != true" %}
   {% assign sorted_projects = categorized_projects | sort: "importance" %}
   <!-- Generate cards for each project -->
   {% if page.horizontal %}
@@ -41,7 +41,7 @@ horizontal: false
 
 <!-- Display projects without categories -->
 
-{% assign sorted_projects = site.projects | sort: "importance" %}
+{% assign sorted_projects = site.projects | where_exp: "item", "item.search_exclude != true" | sort: "importance" %}
 
   <!-- Generate cards for each project -->
 
diff --git a/_posts/2015-03-15-formatting-and-links.md b/_posts/2015-03-15-formatting-and-links.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with formatting and links
 date: 2015-03-15 16:40:16
diff --git a/_posts/2015-05-15-images.md b/_posts/2015-05-15-images.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with images
 date: 2015-05-15 21:01:00
diff --git a/_posts/2015-07-15-code.md b/_posts/2015-07-15-code.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with code
 date: 2015-07-15 15:09:00
diff --git a/_posts/2015-10-20-disqus-comments.md b/_posts/2015-10-20-disqus-comments.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with disqus comments
 date: 2015-10-20 11:59:00-0400
diff --git a/_posts/2015-10-20-math.md b/_posts/2015-10-20-math.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with math
 date: 2015-10-20 11:12:00-0400
diff --git a/_posts/2018-12-22-distill.md b/_posts/2018-12-22-distill.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: distill
 title: a distill-style blog post
 description: an example of a distill-style blog post and main elements
diff --git a/_posts/2020-09-28-twitter.md b/_posts/2020-09-28-twitter.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with twitter
 date: 2020-09-28 11:12:00-0400
diff --git a/_posts/2021-07-04-diagrams.md b/_posts/2021-07-04-diagrams.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with diagrams
 date: 2021-07-04 17:39:00
diff --git a/_posts/2022-02-01-redirect.md b/_posts/2022-02-01-redirect.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with redirect
 date: 2022-02-01 17:39:00
diff --git a/_posts/2022-12-10-giscus-comments.md b/_posts/2022-12-10-giscus-comments.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with giscus comments
 date: 2022-12-10 11:59:00-0400
diff --git a/_posts/2023-03-20-table-of-contents.md b/_posts/2023-03-20-table-of-contents.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with table of contents
 date: 2023-03-20 11:59:00-0400
diff --git a/_posts/2023-03-21-tables.md b/_posts/2023-03-21-tables.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: displaying beautiful tables with Bootstrap Tables
 date: 2023-03-20 14:37:00-0400
diff --git a/_posts/2023-04-24-videos.md b/_posts/2023-04-24-videos.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with videos
 date: 2023-04-24 21:01:00
diff --git a/_posts/2023-04-25-audios.md b/_posts/2023-04-25-audios.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with audios
 date: 2023-04-25 10:25:00
diff --git a/_posts/2023-04-25-sidebar-table-of-contents.md b/_posts/2023-04-25-sidebar-table-of-contents.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with table of contents on a sidebar
 date: 2023-04-25 10:14:00-0400
diff --git a/_posts/2023-05-12-custom-blockquotes.md b/_posts/2023-05-12-custom-blockquotes.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with custom blockquotes
 date: 2023-05-12 15:53:00-0400
diff --git a/_posts/2023-07-04-jupyter-notebook.md b/_posts/2023-07-04-jupyter-notebook.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with jupyter notebook
 date: 2023-07-04 08:57:00-0400
diff --git a/_posts/2023-07-12-post-bibliography.md b/_posts/2023-07-12-post-bibliography.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with bibliography
 date: 2023-07-12 09:56:00-0400
diff --git a/_posts/2023-12-12-tikzjax.md b/_posts/2023-12-12-tikzjax.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with TikZJax
 date: 2023-12-12 22:25:00
diff --git a/_posts/2024-01-26-chartjs.md b/_posts/2024-01-26-chartjs.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with chart.js
 date: 2024-01-26 01:04:00
diff --git a/_posts/2024-01-26-echarts.md b/_posts/2024-01-26-echarts.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with echarts
 date: 2024-01-26 16:03:00
diff --git a/_posts/2024-01-26-geojson-map.md b/_posts/2024-01-26-geojson-map.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with geojson
 date: 2024-01-26 17:57:00
diff --git a/_posts/2024-01-27-advanced-images.md b/_posts/2024-01-27-advanced-images.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with advanced image components
 date: 2024-01-27 11:46:00
diff --git a/_posts/2024-01-27-code-diff.md b/_posts/2024-01-27-code-diff.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with code diff
 date: 2024-01-27 19:22:00
diff --git a/_posts/2024-01-27-vega-lite.md b/_posts/2024-01-27-vega-lite.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with vega lite
 date: 2024-01-27 00:20:00
diff --git a/_posts/2024-04-15-pseudocode.md b/_posts/2024-04-15-pseudocode.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with pseudo code
 date: 2024-04-15 00:01:00
diff --git a/_posts/2024-04-28-post-citation.md b/_posts/2024-04-28-post-citation.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post that can be cited
 date: 2024-04-28 15:06:00
diff --git a/_posts/2024-04-29-typograms.md b/_posts/2024-04-29-typograms.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with typograms
 date: 2024-04-29 23:36:10
diff --git a/_posts/2024-05-01-tabs.md b/_posts/2024-05-01-tabs.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with tabs
 date: 2024-05-01 00:32:13
diff --git a/_posts/2024-12-04-photo-gallery.md b/_posts/2024-12-04-photo-gallery.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with image galleries
 date: 2024-12-04 01:59:00
diff --git a/_posts/2025-03-26-plotly.md b/_posts/2025-03-26-plotly.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: post
 title: a post with plotly.js
 date: 2025-03-26 14:24:00
diff --git a/_projects/1_project.md b/_projects/1_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 1
 description: with background image
diff --git a/_projects/2_project.md b/_projects/2_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 2
 description: a project with a background image and giscus comments
diff --git a/_projects/3_project.md b/_projects/3_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 3 with very long name
 description: a project that redirects to another website
diff --git a/_projects/4_project.md b/_projects/4_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 4
 description: another without an image
diff --git a/_projects/5_project.md b/_projects/5_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 5
 description: a project with a background image
diff --git a/_projects/6_project.md b/_projects/6_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 6
 description: a project with no image
diff --git a/_projects/7_project.md b/_projects/7_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 7
 description: with background image
diff --git a/_projects/8_project.md b/_projects/8_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 8
 description: an other project with a background image and giscus comments
diff --git a/_projects/9_project.md b/_projects/9_project.md
@@ -1,4 +1,5 @@
 ---
+search_exclude: true
 layout: page
 title: project 9
 description: another project with an image 🎉
diff --git a/_sass/_layout.scss b/_sass/_layout.scss
@@ -37,7 +37,6 @@ body.sticky-bottom-footer {
 .profile {
   img {
     width: 100%;
-    padding-top: 8px;
   }
 }
 
diff --git a/_scripts/search.liquid.js b/_scripts/search.liquid.js
diff --git a/_teachings/data-science-fundamentals.md b/_teachings/data-science-fundamentals.md
diff --git a/_teachings/introduction-to-machine-learning.md b/_teachings/introduction-to-machine-learning.md
diff --git a/assets/img/prof_pic.jpg b/assets/img/prof_pic.jpg
diff --git a/assets/img/prof_pic.png b/assets/img/prof_pic.png
