Couple of chores fixes:

1. active stake cache => epoch_active_stake_cache should populate from scratch on fresh run
2. tx_info => collateral_tx_out.multi_assets_descr cannot be conclusively formatted as JSONB, format them as text array instead

files/grest/rpc/01_cached_tables/active_stake_cache.sql

@@ -91,7 +91,10 @@ BEGIN
         epoch_stake.epoch_no,
         SUM(epoch_stake.amount) AS amount
       FROM public.epoch_stake
-      WHERE epoch_stake.epoch_no >= _last_active_stake_validated_epoch
+      WHERE epoch_stake.epoch_no >= COALESCE(
+          (SELECT last_value::integer
+            FROM grest.control_table
+            WHERE key = 'last_active_stake_validated_epoch'), 0)
         AND epoch_stake.epoch_no <= _epoch_no
       GROUP BY epoch_stake.epoch_no
       ON CONFLICT (epoch_no) DO UPDATE

files/grest/rpc/transactions/tx_info.sql

@@ -276,7 +276,7 @@ BEGIN
               )
             END
           ) AS reference_script,
-          REPLACE(tx_out.multi_assets_descr,'fromList ','')::jsonb AS asset_descr
+          REPLACE(tx_out.multi_assets_descr,'fromList ','')::text AS asset_descr
         FROM
           collateral_tx_out AS tx_out
           INNER JOIN tx ON tx_out.tx_id = tx.id