refactor: convert abstract contracts to libraries

.agents/context/architecture.md

@@ -7,7 +7,7 @@
 -   Protocol logic: `contracts/facets/*Facet.sol`
 -   External API declarations: `contracts/interfaces/`
 -   `contracts/IexecInterfaceToken.sol` aggregates them into the single interface downstream tools compile against
--   Shared helpers: `contracts/abstract/` (`FacetBase`, `IexecPocoCommon`, `SignatureVerifier`, …)
+-   Shared helpers: `contracts/abstract/` for inherited bases (`FacetBase`) and `contracts/libs/` for stateless helper libraries (`CommonLib`, `EscrowLib`, `PocoStorageLib`, …)
 -   Storage lives in one struct accessed through `contracts/libs/PocoStorageLib.sol`, shared by every facet: **never reorder or remove an existing variable, only append**. `npm run check-storage-layout` is the CI gate.
 -   Adding or removing a facet means editing two hand-maintained lists: `utils/proxy-tools.ts#getAllLocalFacetFunctions` (selector-to-name map used by upgrades) and the facet groups in `scripts/tools/sol-to-uml.mjs`.
 

.solcover.js

@@ -7,7 +7,7 @@ module.exports = {
     solcOptimizerDetails: {
         yul: true,
         yulDetails: {
-            optimizerSteps: '',
+            optimizerSteps: 'u',
         },
     },
     mocha: {

abis/contracts/facets/IexecEscrowTokenFacet.json

@@ -45,75 +45,6 @@
     "name": "Approval",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      }
-    ],
-    "name": "Lock",
-    "type": "event"
-  },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      },
-      {
-        "indexed": false,
-        "internalType": "bytes32",
-        "name": "ref",
-        "type": "bytes32"
-      }
-    ],
-    "name": "Reward",
-    "type": "event"
-  },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      },
-      {
-        "indexed": false,
-        "internalType": "bytes32",
-        "name": "ref",
-        "type": "bytes32"
-      }
-    ],
-    "name": "Seize",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [
@@ -139,25 +70,6 @@
     "name": "Transfer",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      }
-    ],
-    "name": "Unlock",
-    "type": "event"
-  },
   {
     "stateMutability": "payable",
     "type": "fallback"

abis/contracts/facets/IexecPoco1Facet.json

@@ -10,31 +10,6 @@
     "name": "IncompatibleDatasetOrder",
     "type": "error"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "spender",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "value",
-        "type": "uint256"
-      }
-    ],
-    "name": "Approval",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [
@@ -116,31 +91,6 @@
     "name": "OrdersMatched",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      },
-      {
-        "indexed": false,
-        "internalType": "bytes32",
-        "name": "ref",
-        "type": "bytes32"
-      }
-    ],
-    "name": "Reward",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [
@@ -160,31 +110,6 @@
     "name": "SchedulerNotice",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      },
-      {
-        "indexed": false,
-        "internalType": "bytes32",
-        "name": "ref",
-        "type": "bytes32"
-      }
-    ],
-    "name": "Seize",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [
@@ -210,25 +135,6 @@
     "name": "Transfer",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": false,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "amount",
-        "type": "uint256"
-      }
-    ],
-    "name": "Unlock",
-    "type": "event"
-  },
   {
     "inputs": [
       {

abis/contracts/facets/IexecPoco2Facet.json

@@ -23,31 +23,6 @@
     "name": "AccurateContribution",
     "type": "event"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "spender",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "value",
-        "type": "uint256"
-      }
-    ],
-    "name": "Approval",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [

abis/contracts/facets/IexecPocoBoostFacet.json

@@ -15,31 +15,6 @@
     "name": "SafeCastOverflowedUintDowncast",
     "type": "error"
   },
-  {
-    "anonymous": false,
-    "inputs": [
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "owner",
-        "type": "address"
-      },
-      {
-        "indexed": true,
-        "internalType": "address",
-        "name": "spender",
-        "type": "address"
-      },
-      {
-        "indexed": false,
-        "internalType": "uint256",
-        "name": "value",
-        "type": "uint256"
-      }
-    ],
-    "name": "Approval",
-    "type": "event"
-  },
   {
     "anonymous": false,
     "inputs": [