Fix schema.org validation: volumeNumber→PublicationVolume, add llms.txt to sitemap

- Restructure ScholarlyArticle JSON-LD: move volumeNumber from article
  to nested PublicationVolume inside isPartOf (schema.org compliance)
- Add llms.txt URL entry to sitemap.xml

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

Author: canslab1

index.html

@@ -130,9 +130,18 @@
             { "@type": "Person", "name": "Holin Lin" }
         ],
         "datePublished": "2005",
-        "isPartOf": { "@type": "Periodical", "name": "SIMULATION" },
-        "volumeNumber": "81",
-        "issueNumber": "10",
+        "isPartOf": {
+            "@type": "PublicationIssue",
+            "issueNumber": "10",
+            "isPartOf": {
+                "@type": "PublicationVolume",
+                "volumeNumber": "81",
+                "isPartOf": {
+                    "@type": "Periodical",
+                    "name": "SIMULATION"
+                }
+            }
+        },
         "pageStart": "671",
         "pageEnd": "699",
         "url": "https://doi.org/10.1177/0037549705061519",

sitemap.xml

@@ -23,4 +23,10 @@
       <image:title>CASMIM research paper figure — CASMIM by Prof. Chung-Yuan Huang (黃崇源教授)</image:title>
     </image:image>
   </url>
+  <url>
+    <loc>https://canslab1.github.io/CASMIM/llms.txt</loc>
+    <lastmod>2026-04-07</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.5</priority>
+  </url>
 </urlset>