superseed-sepolia: consensus-layer sync + debug_geth L1 + drop genesis blob fields

op-reth/op-geth sepolia now run op-node consensus-layer sync (empty DB is never
P2P-backfilled) with --disable-discovery, derive L1 via debug_geth against an
operator-set full-history Sepolia RPC (SUPERSEED_SEPOLIA_L1_EXECUTION_RPC, falling
back to ETHEREUM_SEPOLIA_EXECUTION_RPC), and serve a genesis.json with the invalid
top-level excessBlobGas/blobGasUsed nulls removed (eip1559DenominatorCanyon=250
retained). Regenerated from the vibe-node generator.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

op/reth/superseed-sepolia-op-reth-pruned-trace.yml

@@ -46,9 +46,6 @@ services:
       nofile: 1048576    # Max open files (for RPC/WS connections)
       memlock: -1        # Disable memory locking limits (for in-memory DBs like MDBX)
     user: root
-    ports:
-      - 12399:12399
-      - 12399:12399/udp
     expose:
       - 8545
       - 9001
@@ -58,13 +55,12 @@ services:
       - --chain=/config/genesis.json
       - --config=/config/reth/reth.toml
       - --datadir=/root/.local/share/reth
+      - --disable-discovery
       - --engine.cross-block-cache-size=${SUPERSEED_SEPOLIA_RETH_STATE_CACHE:-4096}
       - --full
       - --max-inbound-peers=50
       - --max-outbound-peers=50
       - --metrics=0.0.0.0:9001
-      - --nat=extip:${IP}
-      - --port=12399
       - --rollup.historicalrpc=${SUPERSEED_SEPOLIA_CLASSIC_ARCHIVE_RPC:-https://sepolia.superseed.xyz}
       - --rollup.sequencer-http=https://sepolia.superseed.xyz
       - --rpc-cache.max-blocks=10000
@@ -118,8 +114,8 @@ services:
     environment:
       - OP_NODE_L1_BEACON=${ETHEREUM_SEPOLIA_BEACON_REST}
       - OP_NODE_L1_BEACON_ARCHIVER=${ETHEREUM_SEPOLIA_BEACON_ARCHIVER}
-      - OP_NODE_L1_ETH_RPC=${ETHEREUM_SEPOLIA_EXECUTION_RPC}
-      - OP_NODE_L1_RPC_KIND=${ETHEREUM_SEPOLIA_EXECUTION_KIND:-standard}
+      - OP_NODE_L1_ETH_RPC=${SUPERSEED_SEPOLIA_L1_EXECUTION_RPC:-${ETHEREUM_SEPOLIA_EXECUTION_RPC}}
+      - OP_NODE_L1_RPC_KIND=${SUPERSEED_SEPOLIA_L1_RPC_KIND:-debug_geth}
       - OP_NODE_L1_TRUST_RPC=${ETHEREUM_SEPOLIA_EXECUTION_TRUST:-false}
       - OP_NODE_L2_ENGINE_AUTH=/jwtsecret
       - OP_NODE_L2_ENGINE_KIND=reth
@@ -144,7 +140,7 @@ services:
       - OP_NODE_RPC_ADDR=0.0.0.0
       - OP_NODE_RPC_PORT=8545
       - OP_NODE_SNAPSHOT_LOG=/tmp/op-node-snapshot-log
-      - OP_NODE_SYNCMODE=execution-layer
+      - OP_NODE_SYNCMODE=consensus-layer
       - OP_NODE_VERIFIER_L1_CONFS=0
     entrypoint: [op-node]
     restart: unless-stopped