Enable automatic browsing upvotes

tests/growth-repository.test.ts

@@ -10,7 +10,9 @@ import type { RedditPost } from '../src/reddit/api.js';
 const ACCOUNT = '@t2_grower:reddit.com';
 const OTHER_ACCOUNT = '@t2_other:reddit.com';
 /** Migrations that make up account growth, replayed together in the upgrade test. */
-const GROWTH_MIGRATION_COUNT = 3;
+// Browsing migrations depend on the growth tables, so a pre-growth fixture
+// must rewind past both the growth sequence and the later browsing additions.
+const GROWTH_MIGRATION_COUNT = 5;
 
 function thread(id: string, overrides: Partial<RedditPost> = {}): RedditPost {
   return {