ssb: Revise private scanning slightly.

apps/ssb.json

@@ -1,5 +1,5 @@
 {
 	"type": "tildefriends-app",
 	"emoji": "🦀",
-	"previous": "&i6mkfmh4sW8PpILznWL8VxDzI3MX6V5OJWDs47Qxias=.sha256"
+	"previous": "&j9NkLFuUOfxQhgR6Z3fA4kCWRY1Dcv+7AIAaoaffiBU=.sha256"
 }

apps/ssb/tf-app.js

@@ -305,12 +305,16 @@ class TfElement extends LitElement {
 		const k_chunk_size = 512;
 		if (cache.range.length) {
 			for (let i = cache.range[1]; i < latest; i += k_chunk_size) {
-				ranges.push([i, Math.min(i + k_chunk_size, latest), true]);
+				ranges.push([
+					i,
+					Math.min(i + k_chunk_size, latest),
+					true,
+				]);
 			}
 			for (let i = cache.range[0]; i >= 0; i -= k_chunk_size) {
 				ranges.push([
 					Math.max(i - k_chunk_size, 0),
-					Math.min(cache.range[0], i + k_chunk_size),
+					i,
 					false,
 				]);
 			}
@@ -328,7 +332,7 @@ class TfElement extends LitElement {
 							messages.rowid > ?1 AND
 							messages.rowid <= ?2 AND
 							json(messages.content) LIKE '"%'
-						ORDER BY sequence DESC
+						ORDER BY messages.rowid DESC
 					`,
 				[range[0], range[1]]
 			);

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

@@ -209,7 +209,7 @@ class TfTabNewsFeedElement extends LitElement {
 					WHERE
 						(?2 IS NULL OR (messages.timestamp >= ?2)) AND messages.timestamp < ?3 AND
 						json(messages.content) LIKE '"%'
-					ORDER BY messages.sequence DESC LIMIT 20
+					ORDER BY messages.rowid DESC LIMIT 20
 				`,
 				[JSON.stringify(this.private_messages), start_time, end_time]
 			);