Add apechain-mainnet nitro node (Arbitrum Orbit L3 on Arbitrum One)

ApeChain chain 33139, parent Arbitrum One (42161), Caldera infra, $APE gas.
baseConfig.json chain-info from the official Constellation replica nodeConfig
(ArbOS 31, owner 0x5737..601c, full rollup contract set). das/feed/sequencer
point at Caldera; parent-chain = ARBITRUM_ONE_EXECUTION_RPC (no L1 beacon).
pruned-pebble-path + archive-pebble-hash profiles.

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

compose_registry.json

@@ -196,6 +196,40 @@
       "alephzero-sepolia-nitro-pruned-pebble-path"
     ]
   },
+  {
+    "chain": "mainnet",
+    "client": "nitro",
+    "compose_file": "arb/nitro/apechain-mainnet-nitro-archive-pebble-hash",
+    "features": [
+      "hash",
+      "pebble"
+    ],
+    "network": "apechain",
+    "node": null,
+    "relay": null,
+    "stack": "arb",
+    "type": "archive",
+    "volumes": [
+      "apechain-mainnet-nitro-archive-pebble-hash"
+    ]
+  },
+  {
+    "chain": "mainnet",
+    "client": "nitro",
+    "compose_file": "arb/nitro/apechain-mainnet-nitro-pruned-pebble-path",
+    "features": [
+      "path",
+      "pebble"
+    ],
+    "network": "apechain",
+    "node": null,
+    "relay": null,
+    "stack": "arb",
+    "type": "pruned",
+    "volumes": [
+      "apechain-mainnet-nitro-pruned-pebble-path"
+    ]
+  },
   {
     "chain": "nova",
     "client": "nitro",