katana-testnet: use custom genesis/rollup config

Same fix as mainnet - katana-testnet is not in the superchain registry.
Chain ID 737373, L1 is Sepolia.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

op/geth/katana-testnet-op-geth-pruned-pebble-path.yml

@@ -50,10 +50,9 @@ services:
       - 6060
       - 8551
     environment:
-      - GETH_OP_NETWORK=katana-testnet
       - GETH_OVERRIDE_ISTHMUS=1749807000
       - GETH_ROLLUP_DISABLETXPOOLGOSSIP=true
-    entrypoint: /bin/sh -c 'exec geth "$@"' --
+    entrypoint: /bin/sh -c '[ ! -d /data/geth ] && geth --db.engine=pebble --gcmode=full --datadir /data init --state.scheme=path /config/genesis.json; exec geth "$@"' --
     command:
       - --datadir=/data
       - --db.engine=pebble
@@ -62,6 +61,7 @@ services:
       - --metrics
       - --metrics.addr=0.0.0.0
       - --metrics.port=6060
+      - --networkid=737373
       - --nodiscover
       - --rpc.gascap=600000000
       - --rpc.txfeecap=0
@@ -86,6 +86,7 @@ services:
       - chains
     volumes:
       - ${KATANA_TESTNET_OP_GETH_PRUNED_PEBBLE_PATH_DATA:-katana-testnet-op-geth-pruned-pebble-path}:/data
+      - ./op/katana/testnet:/config
       - .jwtsecret:/jwtsecret:ro
       - /slowdisk:/slowdisk
     logging: *logging-defaults
@@ -120,7 +121,7 @@ services:
       - OP_NODE_METRICS_ADDR=0.0.0.0
       - OP_NODE_METRICS_ENABLED=true
       - OP_NODE_METRICS_PORT=7300
-      - OP_NODE_NETWORK=katana-testnet
+      - OP_NODE_ROLLUP_CONFIG=/config/rollup.json
       - OP_NODE_OVERRIDE_ISTHMUS=1749807000
       - OP_NODE_OVERRIDE_PECTRABLOBSCHEDULE=1742486400
       - OP_NODE_P2P_ADVERTISE_IP=${IP}
@@ -141,6 +142,7 @@ services:
     networks:
       - chains
     volumes:
+      - ./op/katana/testnet:/config
       - .jwtsecret:/jwtsecret:ro
     logging: *logging-defaults
     labels: