From d3317bf3c919c8378c6469f1ebdebd4cec1d0683 Mon Sep 17 00:00:00 2001
From: Vinta Chen <vinta.chen@gmail.com>
Date: Sun, 22 Mar 2026 02:12:51 +0800
Subject: [PATCH] feat(website): add Built-in category tag for stdlib entries

Stdlib entries now show a "Built-in" tag alongside their regular
category tag. The tag is clickable and filters to all 17 stdlib
entries. Added to data-cats attribute so existing filter logic works.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 website/static/style.css     | 6 ++++++
 website/templates/index.html | 7 ++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/website/static/style.css b/website/static/style.css
index da7652f4..ce2f6071 100644
--- a/website/static/style.css
+++ b/website/static/style.css
@@ -347,6 +347,12 @@ th[data-sort].sort-asc::after {
   white-space: nowrap;
 }
 
+.tag-source {
+  background: var(--bg-input);
+  color: var(--text-muted);
+  font-weight: 600;
+}
+
 /* === Arrow Column === */
 .col-arrow {
   width: 2.5rem;
diff --git a/website/templates/index.html b/website/templates/index.html
index dc5fd55a..92942ef1 100644
--- a/website/templates/index.html
+++ b/website/templates/index.html
@@ -84,7 +84,7 @@
       <tr
         class="row"
         role="button"
-        data-cats="{{ entry.categories | join('||') }}"
+        data-cats="{{ entry.categories | join('||') }}{% if entry.source_type == 'Built-in' %}||Built-in{% endif %}"
         data-groups="{{ entry.groups | join('||') }}"
         tabindex="0"
         aria-expanded="false"
@@ -122,6 +122,11 @@
             {{ cat }}
           </button>
           {% endfor %}
+          {% if entry.source_type == 'Built-in' %}
+          <button class="tag tag-source" data-type="cat" data-value="Built-in">
+            Built-in
+          </button>
+          {% endif %}
           <button class="tag tag-group" data-type="group" data-value="{{ entry.groups[0] }}">
             {{ entry.groups[0] }}
           </button>