feat: $ skills mention

src/lib/components/chat/Messages/Markdown.svelte

@@ -46,7 +46,7 @@
 	marked.use(footnoteExtension(options));
 	marked.use(disableSingleTilde);
 	marked.use({
-		extensions: [mentionExtension({ triggerChar: '@' }), mentionExtension({ triggerChar: '#' })]
+		extensions: [mentionExtension({ triggerChar: '@' }), mentionExtension({ triggerChar: '#' }), mentionExtension({ triggerChar: '$' })]
 	});
 
 	$: (async () => {

src/lib/components/chat/Messages/Markdown/MarkdownInlineTokens/MentionToken.svelte

@@ -25,8 +25,23 @@
 
 	const init = () => {
 		const _id = token?.id;
-		// split by : and take first part as idType and second part as id
+		triggerChar = token?.triggerChar ?? '@';
 
+		if (triggerChar === '$') {
+			// Skill mention: id format is "skillId|label"
+			const pipeIdx = _id?.indexOf('|') ?? -1;
+			if (pipeIdx > 0) {
+				id = _id.substring(0, pipeIdx);
+				label = _id.substring(pipeIdx + 1);
+			} else {
+				id = _id;
+				label = _id;
+			}
+			idType = null;
+			return;
+		}
+
+		// split by : and take first part as idType and second part as id
 		const parts = _id?.split(':');
 		if (parts) {
 			idType = parts[0];
@@ -37,7 +52,6 @@
 		}
 
 		label = token?.label ?? id;
-		triggerChar = token?.triggerChar ?? '@';
 
 		if (triggerChar === '#') {
 			if (idType === 'C') {