gaiad: v27.4.0 + statesync-skip-if-data + wasm-snapshot seed (port cursor host fix)

Live chain is v27.4.0 (abci_info); v25.3.2 halts at the v26/v27 upgrade heights (ghcr
lags but v27.4.0 IS pullable). Statesync omits CosmWasm + IBC 08-wasm files -> gaia panics
'wasmlckeeper failed initialize pinned codes / Error opening Wasm file'. init.sh now: skip
statesync if data/application.db exists (idempotent restart, preserves a restored snapshot);
on fresh statesync, seed wasm from polkachu cosmos_wasmonly.tar.lz4. Porting cursor's host
fix into the repo (host /root/rpc edits get reverted by run-rpc-update re-clone).

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

compose_registry.json

@@ -264,6 +264,23 @@
       "arbitrum-nova-nitro-archive-pebble-path"
     ]
   },
+  {
+    "chain": "nova",
+    "client": "nitro",
+    "compose_file": "arb/nitro/arbitrum-nova-nitro-minimal-pebble-hash",
+    "features": [
+      "hash",
+      "pebble"
+    ],
+    "network": "arbitrum",
+    "node": null,
+    "relay": null,
+    "stack": "arb",
+    "type": "minimal",
+    "volumes": [
+      "arbitrum-nova-nitro-minimal-pebble-hash"
+    ]
+  },
   {
     "chain": "nova",
     "client": "nitro",
@@ -351,6 +368,23 @@
       "arbitrum-one-nitro-archive-pebble-path"
     ]
   },
+  {
+    "chain": "one",
+    "client": "nitro",
+    "compose_file": "arb/nitro/arbitrum-one-nitro-minimal-pebble-hash",
+    "features": [
+      "hash",
+      "pebble"
+    ],
+    "network": "arbitrum",
+    "node": null,
+    "relay": null,
+    "stack": "arb",
+    "type": "minimal",
+    "volumes": [
+      "arbitrum-one-nitro-minimal-pebble-hash"
+    ]
+  },
   {
     "chain": "one",
     "client": "nitro",
@@ -403,6 +437,23 @@
       "arbitrum-sepolia-nitro-archive-pebble-hash"
     ]
   },
+  {
+    "chain": "sepolia",
+    "client": "nitro",
+    "compose_file": "arb/nitro/arbitrum-sepolia-nitro-minimal-pebble-hash",
+    "features": [
+      "hash",
+      "pebble"
+    ],
+    "network": "arbitrum",
+    "node": null,
+    "relay": null,
+    "stack": "arb",
+    "type": "minimal",
+    "volumes": [
+      "arbitrum-sepolia-nitro-minimal-pebble-hash"
+    ]
+  },
   {
     "chain": "sepolia",
     "client": "nitro",

cosmos/gaiad/cosmos-mainnet-gaiad-pruned.yml

@@ -35,7 +35,7 @@ services:
       dockerfile: cometbft.Dockerfile
       args:
         CL_IMAGE: ${COSMOS_GAIAD_IMAGE:-ghcr.io/cosmos/gaia}
-        CL_VERSION: ${COSMOS_MAINNET_GAIAD_VERSION:-v25.3.2}
+        CL_VERSION: ${COSMOS_MAINNET_GAIAD_VERSION:-v27.4.0}
     sysctls:
       # TCP Performance
       net.ipv4.tcp_slow_start_after_idle: 0       # Disable slow start after idle
@@ -67,6 +67,7 @@ services:
       - P2P_PORT=12554
       - PERSISTENT_PEERS=a7f14a48cd97c0eae7833849ccdf4e9418622c56@65.108.128.201:14956,37dfe1ec33e9f88f378a61a32462d57d2baa5e74@65.108.99.140:26656,f86d297a28da1a2b186583daf0e229c2b1449414@144.76.217.227:26656,66ca3161c5532da890815e40826ddbbbe2cb7f6c@176.9.101.44:26656
       - STATESYNC_RPC=https://cosmos-rpc.polkachu.com:443
+      - WASM_SNAPSHOT_URL=https://snapshots.polkachu.com/wasm/cosmos/cosmos_wasmonly.tar.lz4
     restart: unless-stopped
     stop_grace_period: 5m
     networks:

cosmos/scripts/init.sh

@@ -37,7 +37,29 @@ ct_patch_p2p             "$CONFIG_DIR/config.toml" "$IP" "${P2P_PORT:-26656}"
 ct_merge_seeds           "$CONFIG_DIR/config.toml" "$SEEDS"
 ct_set_persistent_peers  "$CONFIG_DIR/config.toml" "$PERSISTENT_PEERS"
 ct_set_moniker           "$CONFIG_DIR/config.toml" "$MONIKER"
-ct_configure_statesync   "$CONFIG_DIR/config.toml" "$STATESYNC_RPC"
+
+# Statesync ONLY on a fresh node. If application state already exists (a restored snapshot
+# or prior sync), do NOT re-arm statesync — it would try to re-restore and, because statesync
+# omits the CosmWasm + IBC 08-wasm blobs, the node panics at startup
+# ("wasmlckeeper failed initialize pinned codes / Error opening Wasm file").
+if [ -e "$HOME_DIR/data/application.db" ]; then
+  ct_log "statesync: existing data dir, skipping"
+else
+  ct_configure_statesync "$CONFIG_DIR/config.toml" "$STATESYNC_RPC"
+  # statesync restores IAVL state but NOT the wasm files gaia needs at startup. Seed them
+  # from the wasm-only snapshot (best-effort; the fully robust alternative for wasm chains is
+  # a full snapshot restore). Extracts wasm/ (CosmWasm) + the IBC 08-light-client wasm.
+  if [ -n "$WASM_SNAPSHOT_URL" ] && { [ ! -d "$HOME_DIR/wasm" ] || [ -z "$(ls -A "$HOME_DIR/wasm" 2>/dev/null)" ]; }; then
+    ct_log "fetching wasm snapshot $WASM_SNAPSHOT_URL"
+    ct_apk lz4 tar
+    if curl -sL "$WASM_SNAPSHOT_URL" | lz4 -dc | tar -xf - -C "$HOME_DIR"; then
+      ct_log "wasm snapshot extracted into $HOME_DIR"
+    else
+      ct_log "WARN wasm snapshot fetch/extract failed"
+    fi
+  fi
+fi
+
 ct_seed_priv_validator_state "$HOME_DIR"
 
 exec gaiad start --home "$HOME_DIR" --minimum-gas-prices "$MIN_GAS" "$@"