hledger-flow: coinbase: rules: catch Advanced Trade 0-value txs

- Removes 0-values from first double entry while retaining metadata
- Catches less-than-a-penny commissions in those same transactions

container/src/hledger-flow/accounts/coinbase/coinbase-shared.rules

@@ -656,7 +656,6 @@ if %type ^advanced_trade_fill$
 
 if %type ^advanced_trade_fill$
 & %advanced_trade_fill_order_side (^buy$|^sell$)
-& %advanced_trade_fill_real_value_amount [1-9]
   account1 assets:coinbase:%subaccount:%advanced_trade_fill_pair_lhs
   account2 assets:coinbase:%subaccount:%advanced_trade_fill_pair_rhs
   amount3 -%advanced_trade_fill_commission %advanced_trade_fill_pair_rhs
@@ -664,6 +663,13 @@ if %type ^advanced_trade_fill$
   amount4 %advanced_trade_fill_commission %advanced_trade_fill_pair_rhs
   account4 expenses:coinbase:%subaccount:fees:trading:%advanced_trade_fill_pair_rhs
 
+# NOTE: see WARNING in preprocess about $0.00 Advanced Trade txs
+if %type ^advanced_trade_fill$
+& %advanced_trade_fill_order_side (^buy$|^sell$)
+& %advanced_trade_fill_real_value_amount ^[^1-9]*$
+  account1
+  account2
+
 #
 # BUY
 #