refactor: remove electron-related code

src/lib/tag.ts

@@ -0,0 +1,15 @@
+export function tagNameEquals(tagName: string) {
+  return (tag: string[]) => tag[0] === tagName
+}
+
+export function isReplyETag([tagName, , , marker]: string[]) {
+  return tagName === 'e' && marker === 'reply'
+}
+
+export function isRootETag([tagName, , , marker]: string[]) {
+  return tagName === 'e' && marker === 'root'
+}
+
+export function isMentionETag([tagName, , , marker]: string[]) {
+  return tagName === 'e' && marker === 'mention'
+}