ssb: Mentions have become too slow. Using refs instead of fts seems better and faster, again?

apps/ssb.json

@@ -1,5 +1,5 @@
 {
 	"type": "tildefriends-app",
 	"emoji": "🦀",
-	"previous": "&QPdP4BaztX9l3BBQNVbFAu8t5iN5NTqzhIOr+8bNhb0=.sha256"
+	"previous": "&rjvfnAZ6XCB3JYO+Qtukpb5iYrbJ9niOLXCbbnQDmyY=.sha256"
 }

apps/ssb/tf-tab-news-feed.js

@@ -118,10 +118,11 @@ class TfTabNewsFeedElement extends LitElement {
 			result = await tfrpc.rpc.query(
 				`
 					WITH mentions AS (SELECT messages.rowid, messages.id, messages.previous, messages.author, messages.sequence, messages.timestamp, messages.hash, json(messages.content) AS content, messages.signature
-						FROM messages_fts(?1)
-						JOIN messages ON messages.rowid = messages_fts.rowid
+						FROM messages_refs
+						JOIN messages ON messages.id = messages_refs.message
 						JOIN json_each(?2) AS following ON messages.author = following.value
 						WHERE
+							messages_refs.ref = ?1 AND
 							messages.author != ?1 AND
 							(?3 IS NULL OR messages.timestamp >= ?3) AND messages.timestamp < ?4
 						ORDER BY timestamp DESC limit ?5)
@@ -133,7 +134,7 @@ class TfTabNewsFeedElement extends LitElement {
 					SELECT TRUE AS is_primary, * FROM mentions
 				`,
 				[
-					'"' + this.whoami.replace('"', '""') + '"',
+					this.whoami,
 					JSON.stringify(this.following),
 					start_time,
 					end_time,