Keep sim_proxy profile data up to date

src/d2m/actions/register-pk-user.js

@@ -146,7 +146,7 @@ async function syncUser(messageID, author, roomID, shouldActuallySync) {
 	try {
 		// API lookup
 		var pkMessage = await fetchMessage(messageID)
-		db.prepare("INSERT OR IGNORE INTO sim_proxy (user_id, proxy_owner_id, displayname) VALUES (?, ?, ?)").run(pkMessage.member.uuid, pkMessage.sender, author.username)
+		db.prepare("REPLACE INTO sim_proxy (user_id, proxy_owner_id, displayname) VALUES (?, ?, ?)").run(pkMessage.member.uuid, pkMessage.sender, author.username)
 	} catch (e) {
 		// Fall back to offline cache
 		const senderMxid = from("sim_proxy").join("sim", "user_id").join("sim_member", "mxid").where({displayname: author.username, room_id: roomID}).pluck("mxid").get()

src/d2m/converters/message-to-event.js

@@ -33,9 +33,10 @@ function getDiscordParseCallbacks(message, guild, useHTML) {
 		user: node => {
 			const mxid = select("sim", "mxid", {user_id: node.id}).pluck().get()
 			const interaction = message.interaction_metadata || message.interaction
-			const username = message.mentions.find(ment => ment.id === node.id)?.username
-				|| message.referenced_message?.mentions.find(ment => ment.id === node.id)?.username
+			const username = message.mentions?.find(ment => ment.id === node.id)?.username
+				|| message.referenced_message?.mentions?.find(ment => ment.id === node.id)?.username
 				|| (interaction?.user.id === node.id ? interaction.user.username : null)
+				|| (message.author.id === node.id ? message.author.username : null)
 				|| node.id
 			if (mxid && useHTML) {
 				return `<a href="https://matrix.to/#/${mxid}">@${username}</a>`