fix(lik-ui): strip YAML frontmatter before Markdown render

The closing "---" of a SKILL.md's frontmatter was read by marked as a
setext heading underline, rendering the name/description block as a giant
heading. Strip the leading frontmatter (already shown above the block)
before parsing.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: yoomlam

lik-ui/src/lik_ui/templates/connections.html

@@ -131,11 +131,15 @@ <h1>Connections</h1>
               box.appendChild(link);
               var md = document.createElement("div");
               md.className = "skill-instructions";
+              // Drop the leading YAML frontmatter (name/description, already shown above): its
+              // closing "---" would otherwise read as a setext heading underline and render the
+              // whole block as a giant heading.
+              var body = res.d.instructions.replace(/^---\r?\n[\s\S]*?\r?\n---\r?\n?/, "");
               if (window.marked && window.DOMPurify) {
-                md.innerHTML = window.DOMPurify.sanitize(window.marked.parse(res.d.instructions));
+                md.innerHTML = window.DOMPurify.sanitize(window.marked.parse(body));
               } else {
                 var pre = document.createElement("pre");
-                pre.textContent = res.d.instructions;
+                pre.textContent = body;
                 md.appendChild(pre);
               }
               box.appendChild(md);