feat(db): add video pages and up follower snapshot schema

reaction_board/migrations.py

@@ -186,6 +186,27 @@ MIGRATIONS: tuple[Migration, ...] = (
             "ALTER TABLE candidate ADD COLUMN review INTEGER",
         ),
     ),
+    Migration(
+        version=4,
+        name="video pages and up follower snapshot",
+        statements=(
+            "ALTER TABLE video ADD COLUMN pages INTEGER",
+            "ALTER TABLE video ADD COLUMN up_follower INTEGER",
+            "ALTER TABLE video ADD COLUMN up_follower_at INTEGER",
+            "ALTER TABLE video ADD COLUMN up_follower_backfilled INTEGER NOT NULL DEFAULT 0",
+            """
+            CREATE TABLE up_profile (
+              mid               INTEGER PRIMARY KEY,
+              name              TEXT,
+              follower_first    INTEGER,
+              following_first   INTEGER,
+              first_captured_at INTEGER,
+              follower_latest   INTEGER,
+              last_refreshed    INTEGER
+            )
+            """,
+        ),
+    ),
 )