xlayer: archive-only reth on OKX xlayer/op-reth image + snapshot reth.toml

X Layer mainnet/testnet op-reth now use the OKX xlayer/op-reth:v0.0.4.1 fork
(generic op-reth can't read the X Layer DB format), the image's built-in
xlayer-<network> chain spec, --rpc.legacy-url for post-snapshot history gap-fill,
and the OKX archive-compatible reth.toml (light pruning only: merkle_changesets
distance=10064). Switched the reth profile from full_trace to archive_trace and
deleted the pruned variants — a "pruned" compose over archive snapshot data
crash-loops on a block-height mismatch. Requires the official OKX reth snapshot
pre-loaded into the volume; do NOT sync from scratch.

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

op/geth/xlayer-mainnet-op-geth-archive-pebble-hash.yml

@@ -136,7 +136,7 @@ services:
       - OP_NODE_CONDUCTOR_ENABLED=false
       - OP_NODE_L1_BEACON=${ETHEREUM_MAINNET_BEACON_REST}
       - OP_NODE_L1_BEACON_ARCHIVER=${ETHEREUM_MAINNET_BEACON_ARCHIVER}
-      - OP_NODE_L1_ETH_RPC=${ETHEREUM_MAINNET_EXECUTION_RPC}
+      - OP_NODE_L1_ETH_RPC=${XLAYER_MAINNET_L1_EXECUTION_RPC:-${ETHEREUM_MAINNET_EXECUTION_RPC}}
       - OP_NODE_L1_RPC_KIND=${ETHEREUM_MAINNET_EXECUTION_KIND:-standard}
       - OP_NODE_L1_TRUST_RPC=${ETHEREUM_MAINNET_EXECUTION_TRUST:-false}
       - OP_NODE_L2_ENGINE_AUTH=/jwtsecret