freeze(v8-v10): mainnet rollout (Base + NeuroWeb + Gnosis)

Deploys the v8->v10 freeze on all 3 mainnets. Hub-rotated contracts
(uniform across chains):

  Staking         1.0.2-freeze  0xDaa40BEb1D73bC43E437cDC3188abE565119619d
  RandomSampling  1.0.1-freeze  0xA32780d6A89542462271ca6d2d78373889F1C2d9

verify_freeze.ts: 17/17 PASS on all 3 mainnets.

Operational fixes captured here:
- hardhat.config.ts: bump neuroweb_mainnet gasPrice from 100 to 15_000_000
  wei. The previous value was 1600x below baseFeePerGas and was rejected
  with 'gas price less than block base fee'. The slightly unusual value
  (vs round 10_000_000) also helps invalidate previously-rejected tx
  hashes still cached by the parachain RPC's mempool dedup.
- deployments/parameters.json: pin neuroweb_mainnet.stakeWithdrawalDelay
  override to '300' (intentional per-network value) so the standard
  policy diff doesn't auto-bump it on the next deploy.

New operational scripts:
- audit_hub_registry.mjs              full Hub registry audit per chain
- replace_hub_slot.ts                 generic single-slot Hub registry update
                                      (env-driven, dry-run by default)
- replace_stale_slots_*.ts            per-chain canonical batch (dry-run by
                                      default; REGISTRY_WRITE=1 to execute)
- finalize_staking_swap_*.ts          one-off Staking swap (recovered the
                                      NeuroWeb deploy after a hardhat-deploy
                                      partial-resume edge case)
- simulate_freeze_claim_*.ts          live-chain claimDelegatorRewards
                                      dry-run against a forked Base mainnet
- registry_state_check_*.mjs          on-chain verification that
                                      previously-registered addresses are
                                      no longer authorised by the Hub

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 2 people

abi/SafeCast.json

@@ -0,0 +1,56 @@
+[
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "bits",
+        "type": "uint8"
+      },
+      {
+        "internalType": "int256",
+        "name": "value",
+        "type": "int256"
+      }
+    ],
+    "name": "SafeCastOverflowedIntDowncast",
+    "type": "error"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "int256",
+        "name": "value",
+        "type": "int256"
+      }
+    ],
+    "name": "SafeCastOverflowedIntToUint",
+    "type": "error"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint8",
+        "name": "bits",
+        "type": "uint8"
+      },
+      {
+        "internalType": "uint256",
+        "name": "value",
+        "type": "uint256"
+      }
+    ],
+    "name": "SafeCastOverflowedUintDowncast",
+    "type": "error"
+  },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "value",
+        "type": "uint256"
+      }
+    ],
+    "name": "SafeCastOverflowedUintToInt",
+    "type": "error"
+  }
+]

deploy/034_deploy_migrator_v6_epochs_9to12_rewards.ts

@@ -1,7 +1,20 @@
 import { HardhatRuntimeEnvironment } from 'hardhat/types';
 import { DeployFunction } from 'hardhat-deploy/types';
 
+// MigratorV6Epochs9to12Rewards is managed via a separate operational path on
+// these mainnets and must not be (re-)deployed by the standard pipeline here.
+// Remove the network from the skip set only when the operational handling
+// is updated accordingly.
+const SKIP_NETWORKS = new Set(['neuroweb_mainnet', 'gnosis_mainnet']);
+
 const func: DeployFunction = async function (hre: HardhatRuntimeEnvironment) {
+  if (SKIP_NETWORKS.has(hre.network.name)) {
+    console.log(
+      `Skipping MigratorV6Epochs9to12Rewards deploy on ${hre.network.name} (managed separately).`,
+    );
+    return;
+  }
+
   await hre.helpers.deploy({
     newContractName: 'MigratorV6Epochs9to12Rewards',
   });