endstep2

tokenizerRendu/code/.agents/skills/hardhat-toolbox-mocha-ethers/SKILL.md

@@ -0,0 +1,119 @@
+---
+name: hardhat-toolbox-mocha-ethers
+description: Use alongside the `hardhat` skill when the project depends on `@nomicfoundation/hardhat-toolbox-mocha-ethers`. Covers the ethers helpers exposed on `network.create()`, contract interaction (`ethers.deployContract`, calling functions, `connect`), TypeChain-typed contract instances, and the chai matchers from `@nomicfoundation/hardhat-ethers-chai-matchers` (`.to.emit`, `.to.be.revertedWith*`, `.to.changeEtherBalance(s)`).
+metadata:
+  package: "@nomicfoundation/hardhat-toolbox-mocha-ethers"
+---
+
+# Hardhat toolbox: ethers + Mocha
+
+This skill builds on the core **`hardhat`** skill. Load that first for test organization, the `network.create()` shape, `networkHelpers`, fixtures, and the typechecking workflow. Everything below hangs off the connection returned by `network.create()`.
+
+This stack runs tests under **Mocha** (global `describe` / `it`) and asserts with **chai**. Mocha doesn't await `describe` callbacks, so the connection is set up at the top of the file with top-level `await`:
+
+```ts
+import { expect } from "chai";
+import { network } from "hardhat";
+
+const { ethers, networkHelpers } = await network.create();
+
+describe("Counter", function () {
+  // ...
+});
+```
+
+One connection per file is the norm. State isolation between tests comes from `loadFixture` (see the `hardhat` skill), not from creating a fresh connection per `describe`.
+
+## `ethers`: signers and contract interaction
+
+Contract types are generated by **TypeChain** from the compiled ABI. Run `hardhat build` before typechecking so the types reflect the latest contracts.
+
+```ts
+// Provider (read-only chain data)
+const blockNumber = await ethers.provider.getBlockNumber();
+const balance = await ethers.provider.getBalance("0xabc...");
+
+// Signers (for sending transactions)
+const [owner, alice, bob] = await ethers.getSigners(); // default funded accounts
+
+// Utilities
+const oneEth = ethers.parseEther("1.0");
+
+// Deploy a contract, returns a fully typed instance.
+// Pass constructor args as the second argument, and (optionally) a signer
+// other than the default as the third.
+const counter = await ethers.deployContract("Counter");
+const counterWithArgs = await ethers.deployContract("Counter", [42n]);
+const counterFromAlice = await ethers.deployContract("Counter", [], alice);
+
+// Read state and call functions. Args and return types are type-checked
+// against the ABI at compile time; passing wrong types or wrong argument
+// counts is a TypeScript error.
+const value = await counter.x();
+await counter.inc();
+await counter.incBy(3n);
+
+// Send from a different signer
+await counter.connect(alice).inc();
+
+// Send ETH along with a payable call
+await counter.deposit({ value: oneEth });
+
+// Attach to an already-deployed contract
+const existing = await ethers.getContractAt("Counter", "0xabc...");
+```
+
+Inside a `loadFixture` setup function (see the `hardhat` skill for the surrounding pattern), `ethers.deployContract` is the canonical deploy step:
+
+```ts
+async function deployCounterFixture() {
+  const counter = await ethers.deployContract("Counter");
+  return { counter };
+}
+
+const { counter } = await networkHelpers.loadFixture(deployCounterFixture);
+```
+
+To send a transaction from an arbitrary address (not one of the default-funded accounts), fund it for gas and pull an impersonating signer with `ethers.getImpersonatedSigner` — it handles the impersonation internally, no separate `networkHelpers.impersonateAccount` call needed:
+
+```ts
+const addr = "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
+await networkHelpers.setBalance(addr, ethers.parseEther("1.0"));
+const signer = await ethers.getImpersonatedSigner(addr);
+await counter.connect(signer).inc();
+```
+
+## Chai matchers: Ethereum-specific assertions
+
+The `hardhat-ethers-chai-matchers` plugin extends chai's `expect` with matchers for transactions, events, and balance changes. Pass the **transaction promise** (the result of a write call, unawaited) into `expect`:
+
+```ts
+import { expect } from "chai";
+
+// Reverts
+await expect(counter.connect(banned).inc()).to.revert(ethers);
+await expect(counter.connect(banned).inc()).to.be.revertedWith(
+  "only the owner can increment the counter",
+);
+await expect(counter.connect(banned).inc()).to.be.revertedWithCustomError(
+  counter,
+  "Unauthorized",
+);
+await expect(counter.connect(banned).inc())
+  .to.be.revertedWithCustomError(counter, "Unauthorized")
+  .withArgs(banned.address);
+
+// Events
+await expect(counter.inc()).to.emit(counter, "Increment");
+await expect(counter.inc()).to.emit(counter, "Increment").withArgs(1n);
+
+// ETH balance changes (positive = received, negative = spent, before gas)
+await expect(game.claim()).to.changeEtherBalance(ethers, winner, PRIZE);
+await expect(game.claim()).to.changeEtherBalances(
+  ethers,
+  [winner, loser],
+  [PRIZE, -STAKE],
+);
+```
+
+For plain assertions (equality, arrays, types), use `expect` from chai directly without the Ethereum matchers.

tokenizerRendu/code/.agents/skills/hardhat/SKILL.md

@@ -0,0 +1,152 @@
+---
+name: hardhat
+description: Use when working with Hardhat 3 projects — writing or modifying Solidity tests, TypeScript tests, or any code touching hardhat.config.ts, the `hardhat` import, or `network.create()`. Covers test-layer choice, forge-std cheatcodes, the network connection API, `networkHelpers`, and the compile-then-typecheck workflow. For toolbox-specific guidance (clients, contract calls, assertions), also load the matching `hardhat-toolbox-*` skill.
+metadata:
+  package: "hardhat"
+---
+
+# Hardhat 3
+
+This skill covers Hardhat 3 itself. The toolbox layer (clients, contract interaction, ecosystem-specific assertions) lives in companion skills — load whichever matches the project:
+
+- `@nomicfoundation/hardhat-toolbox-viem` → also load the **`hardhat-toolbox-viem`** skill.
+- `@nomicfoundation/hardhat-toolbox-mocha-ethers` → also load the **`hardhat-toolbox-mocha-ethers`** skill.
+
+## Test organization
+
+Hardhat 3 supports two distinct test layers:
+
+**Solidity tests** (`.t.sol` files in `contracts/`, or any `.sol` file in `test/`) are the default choice for unit tests on individual contracts. They run directly in the EVM, compile-check against the real ABI, and have access to cheatcodes for EVM state manipulation. Any public function whose name starts with `test` is executed as a test case.
+
+**TypeScript tests** (`.ts` files in `test/`) are the right choice when a test requires off-chain orchestration: multi-contract interactions, fixture reuse across a large suite, assertions about gas or ETH balances from the outside, or integration scenarios driven by external state.
+
+Reach for TypeScript only when Solidity isn't enough. Solidity tests cover all contract logic; TypeScript tests cover the end-to-end flow as a user or script would experience it.
+
+```bash
+hardhat test            # run all tests (Solidity + TypeScript)
+hardhat test solidity   # Solidity tests only
+```
+
+TypeScript tests are run either with `hardhat test nodejs` or with `hardhat test mocha`, depending on the toolbox or plugins being used: the viem-based toolbox uses `nodejs` while the ethers+mocha toolbox uses `mocha`.
+
+Pass `--coverage` to collect Solidity coverage while running tests. It works on the main `hardhat test` task as well as the `solidity` and TypeScript subtasks (`nodejs` / `mocha`), so you can scope coverage to a single test layer when needed.
+
+## Solidity tests
+
+Any contract that contains at least one `test*` function is treated as a test contract. Use `forge-std` (if present in `package.json`) for assertions and cheatcodes:
+
+```solidity
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.28;
+
+import { Test } from "forge-std/Test.sol";
+import { Counter } from "./Counter.sol";
+
+contract CounterTest is Test {
+  Counter counter;
+
+  function setUp() public {
+    counter = new Counter();
+  }
+
+  function test_InitialValueIsZero() public view {
+    assertEq(counter.x(), 0);
+  }
+
+  function test_IncByIncreasesByAmount() public {
+    counter.incBy(3);
+    assertEq(counter.x(), 3);
+  }
+
+  // Fuzz test: Hardhat runs this with many random inputs automatically
+  function testFuzz_Inc(uint8 x) public {
+    for (uint8 i = 0; i < x; i++) {
+      counter.inc();
+    }
+    require(counter.x() == x, "Value after calling inc x times should be x");
+  }
+}
+```
+
+The `vm` object (from `forge-std/Test.sol`) exposes cheatcodes for EVM state manipulation. Commonly used ones:
+
+| Cheatcode | Effect |
+| --- | --- |
+| `vm.prank(addr)` | Sets `msg.sender` for the next call only |
+| `vm.startPrank(addr)` / `vm.stopPrank()` | Sets `msg.sender` for a range of calls |
+| `vm.deal(addr, amount)` | Sets an account's ETH balance |
+| `vm.warp(timestamp)` | Sets `block.timestamp` |
+| `vm.roll(blockNum)` | Sets `block.number` |
+| `vm.expectRevert(...)` | Asserts the next call reverts |
+| `vm.expectEmit(...)` | Asserts the next call emits a specific event |
+
+## TypeScript tests and the network connection
+
+The central object in a TypeScript test is the **network connection**, created by `network.create()`. Toolbox plugins extend it with helper objects (e.g. `viem` or `ethers`, plus `networkHelpers`):
+
+```ts
+import { network } from "hardhat";
+
+const { networkHelpers } = await network.create();
+// Toolbox plugins also expose viem / ethers on this object;
+// see the matching hardhat-toolbox-* skill.
+```
+
+Hardhat 3 only works with ESM, so top-level `await` is available. Each call to `network.create()` produces an **isolated blockchain state**. A top-level network connection can be used when the same connection and its associated state can be shared across all tests in the file. For more isolation, you can create a new connection for each test suite or even each test case.
+
+### `networkHelpers`: EVM state manipulation
+
+`networkHelpers` wraps all of Hardhat's development-only helpers behind a typed, ergonomic API. Prefer it over raw JSON-RPC calls:
+
+```ts
+// Time
+await networkHelpers.time.increase(60); // mine a block 60 s ahead
+await networkHelpers.time.increaseTo(target); // mine to a specific timestamp
+const now = await networkHelpers.time.latest(); // latest block timestamp
+await networkHelpers.time.setNextBlockTimestamp(ts); // set without mining
+
+// Blocks
+await networkHelpers.mine(); // mine one block
+await networkHelpers.mine(5); // mine several blocks
+
+// Accounts
+await networkHelpers.impersonateAccount(addr);
+await networkHelpers.setBalance(addr, 10n ** 18n);
+
+// Block parameters
+await networkHelpers.setPrevRandao(value); // set block.prevrandao for the next block
+await networkHelpers.setNextBlockBaseFeePerGas(baseFee);
+
+// Fixtures
+//
+// loadFixture runs the setup once and snapshots the state. Subsequent calls
+// restore the snapshot instead of re-deploying, much faster for large suites.
+// The deploy step inside the fixture is toolbox-specific (e.g.
+// viem.deployContract, an ethers ContractFactory) — see the matching
+// hardhat-toolbox-* skill.
+async function deployCounter() {
+  // ... toolbox-specific deploy ...
+  return { counter };
+}
+
+const { counter } = await networkHelpers.loadFixture(deployCounter);
+// loadFixture requires a named function for caching to work (not an
+// arrow/anonymous function)
+
+// Snapshots (manual)
+const snap = await networkHelpers.takeSnapshot();
+// ... do things ...
+await snap.restore();
+```
+
+For plain TypeScript assertions (equality, arrays, types), use `node:assert/strict`. For ecosystem-specific assertions (reverts, events, balance changes), see the matching `hardhat-toolbox-*` skill.
+
+## Typechecking
+
+Generated contract types are derived from the compiled ABI (viem in the viem toolbox, TypeChain in the ethers toolbox), so recompile first, then typecheck. The example below uses npm; swap `npx` for whichever package manager runner this project uses:
+
+```bash
+npx hardhat build && npx tsc --noEmit
+```
+
+The compiler will catch wrong argument types, missing arguments, and invalid options (e.g. `value` on a non-payable function) before you even start the test runner. Make this a habit: it surfaces many mistakes faster than running the full test suite.

tokenizerRendu/code/.claude

@@ -0,0 +1 @@
+.agents

tokenizerRendu/code/.env.example

@@ -0,0 +1,2 @@
+BSC_TESTNET_RPC=https://data-seed-prebsc-1-s1.binance.org:8545/
+PRIVATE_KEY=

tokenizerRendu/code/.gitignore

@@ -0,0 +1,31 @@
+# Node modules
+/node_modules
+
+# Compilation output
+/dist
+
+# pnpm deploy output
+/bundle
+
+# Hardhat Build Artifacts
+/artifacts
+
+# Hardhat compilation (v2) support directory
+/cache
+
+# Typechain output
+/types
+
+# Environment files
+.env
+.env.*
+!.env.example
+
+# Hardhat coverage reports
+/coverage
+
+# Gas snapshot files
+/.gas-snapshot
+
+# Snapshot cheatcodes output
+/snapshots

tokenizerRendu/code/.npmignore

@@ -0,0 +1,22 @@
+# Node modules
+/node_modules
+
+# Compilation output
+/dist
+
+# pnpm deploy output
+/bundle
+
+# Hardhat Build Artifacts
+/artifacts
+
+# Hardhat compilation (v2) support directory
+/cache
+
+# Typechain output
+/types
+
+# Environment files
+.env
+.env.*
+!.env.example

tokenizerRendu/code/AGENTS.md

@@ -0,0 +1,20 @@
+# Hardhat + ethers project
+
+## Project layout
+
+```
+contracts/        Solidity source files (*.sol) and unit tests (*.t.sol)
+test/             TypeScript integration tests and Solidity unit tests (*.sol)
+ignition/         Hardhat Ignition deployment modules
+scripts/          Standalone scripts run with `hardhat run`
+hardhat.config.ts
+```
+
+## Working in this project
+
+When writing or modifying tests, configuring `hardhat.config.ts`, or interacting with the network from TypeScript, invoke the **`hardhat`** skill. It covers Solidity and TypeScript testing, how to choose between them, `forge-std` cheatcodes, the `network.create()` API, `networkHelpers`, and the compile-then-typecheck workflow. The skill itself points to the matching `hardhat-toolbox-*` skill for toolbox-specific guidance (signers, contract interaction, assertions).
+
+## Docs
+
+- Hardhat 3 — https://hardhat.org/llms.txt
+- ethers.js — https://docs.ethers.org/v6/

tokenizerRendu/code/CLAUDE.md

@@ -0,0 +1 @@
+AGENTS.md

tokenizerRendu/code/README.md

@@ -1,14 +1,75 @@
-# Code — smart contract(s)
+# Code — FGC42Forge (Hardhat 3)
 
-Place ici les sources du token (ex. `contracts/`, `hardhat.config.js`, tests).
+Sources du token **FGC42Forge** (symbole **FG42**), standard **BEP-20**, déploiement prévu sur **BNB Smart Chain Testnet** (chainId **97**).
 
-**Exigences sujet :** code commenté, noms de variables et fonctions explicites, standard **BEP-20** (ou équivalent documenté).
+Stack : **Solidity**, **Hardhat 3**, **OpenZeppelin**, tests **Mocha + ethers** et tests Solidity (`.t.sol`).
 
-## Commandes (à compléter)
+> Le contrat `FGC42Forge.sol` sera ajouté à l’étape 3. Le dossier contient encore l’exemple **Counter** généré par `npx hardhat --init`.
 
-```bash
-# Exemple Hardhat — adapter
+## Prérequis
+
+- Node.js ≥ 18 (Hardhat 3 recommande v22+)
+- Compte testnet avec **tBNB** (ex. MetaMask, réseau BSC Testnet)
+
+## Installation
+
+```shell
+cd code
 npm install
-npx hardhat compile
+```
+
+## Variables d’environnement
+
+Copier le modèle et remplir les valeurs **localement** (ne jamais committer `.env`) :
+
+```shell
+cp .env.example .env
+```
+
+| Variable | Description |
+|----------|-------------|
+| `BSC_TESTNET_RPC` | URL RPC du testnet BSC (défaut dans `.env.example`) |
+| `PRIVATE_KEY` | Clé privée du compte de **test** uniquement (préfixe `0x`) |
+
+Hardhat lit ces variables via `hardhat.config.ts` et `dotenv`.
+
+## Commandes utiles
+
+Compiler les contrats :
+
+```shell
+npx hardhat build
+```
+
+Lancer tous les tests (exemple Counter, en attendant FGC42Forge) :
+
+```shell
 npx hardhat test
 ```
+
+Tests séparés :
+
+```shell
+npx hardhat test solidity
+npx hardhat test mocha
+```
+
+## Réseau `bscTestnet`
+
+Le réseau **`bscTestnet`** est déclaré dans `hardhat.config.ts`. Pour un déploiement (plus tard, avec Ignition ou un script) :
+
+```shell
+npx hardhat ignition deploy --network bscTestnet ignition/modules/<module>.ts
+```
+
+Remplacer le module par celui du token une fois le contrat prêt.
+
+## Structure
+
+```
+contracts/     Contrats Solidity (+ tests .t.sol)
+test/          Tests TypeScript (Mocha)
+ignition/      Modules de déploiement Hardhat Ignition
+scripts/       Scripts `hardhat run`
+hardhat.config.ts
+```

tokenizerRendu/code/contracts/Counter.sol

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.34;
+
+contract Counter {
+  uint public x;
+
+  event Increment(uint by);
+
+  function inc() public {
+    x++;
+    emit Increment(1);
+  }
+
+  function incBy(uint by) public {
+    require(by > 0, "incBy: increment should be positive");
+    x += by;
+    emit Increment(by);
+  }
+}

tokenizerRendu/code/contracts/Counter.t.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.34;
+
+import {Counter} from "./Counter.sol";
+import {Test} from "forge-std/Test.sol";
+
+// Solidity tests are compatible with foundry, so they
+// use the same syntax and offer the same functionality.
+
+contract CounterTest is Test {
+  Counter counter;
+
+  function setUp() public {
+    counter = new Counter();
+  }
+
+  function test_InitialValue() public view {
+    require(counter.x() == 0, "Initial value should be 0");
+  }
+
+  function testFuzz_Inc(uint8 x) public {
+    for (uint8 i = 0; i < x; i++) {
+      counter.inc();
+    }
+    require(counter.x() == x, "Value after calling inc x times should be x");
+  }
+
+  function test_IncByZero() public {
+    vm.expectRevert();
+    counter.incBy(0);
+  }
+}

tokenizerRendu/code/hardhat.config.ts

@@ -0,0 +1,39 @@
+import hardhatToolboxMochaEthersPlugin from "@nomicfoundation/hardhat-toolbox-mocha-ethers";
+import { configVariable, defineConfig } from "hardhat/config";
+import "dotenv/config";
+
+export default defineConfig({
+  plugins: [hardhatToolboxMochaEthersPlugin],
+  solidity: {
+    profiles: {
+      default: {
+        version: "0.8.34",
+      },
+      production: {
+        version: "0.8.34",
+        settings: {
+          optimizer: {
+            enabled: true,
+            runs: 200,
+          },
+        },
+      },
+    },
+  },
+  networks: {
+    hardhatMainnet: {
+      type: "edr-simulated",
+      chainType: "l1",
+    },
+    hardhatOp: {
+      type: "edr-simulated",
+      chainType: "op",
+    },
+    bscTestnet: {
+      type: "http",
+      chainType: "l1",
+      url: configVariable("BSC_TESTNET_RPC"),
+      accounts: [configVariable("PRIVATE_KEY")],
+    },
+  },
+});

tokenizerRendu/code/ignition/modules/Counter.ts

@@ -0,0 +1,9 @@
+import { buildModule } from "@nomicfoundation/hardhat-ignition/modules";
+
+export default buildModule("CounterModule", (m) => {
+  const counter = m.contract("Counter");
+
+  m.call(counter, "incBy", [5n]);
+
+  return { counter };
+});

tokenizerRendu/code/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "code",
+  "version": "1.0.0",
+  "description": "Place ici les sources du token (ex. `contracts/`, `hardhat.config.js`, tests).",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@nomicfoundation/hardhat-ethers": "^4.2.1",
+    "@nomicfoundation/hardhat-ignition": "^3.1.9",
+    "@nomicfoundation/hardhat-toolbox": "^7.0.0",
+    "@nomicfoundation/hardhat-toolbox-mocha-ethers": "^4.0.0",
+    "@types/chai": "^5.2.3",
+    "@types/chai-as-promised": "^8.0.2",
+    "@types/mocha": "^10.0.10",
+    "@types/node": "^22.20.5",
+    "chai": "^6.3.0",
+    "ethers": "^6.17.0",
+    "forge-std": "github:foundry-rs/forge-std#v1.16.2",
+    "hardhat": "^3.20.0",
+    "mocha": "^12.0.3",
+    "typescript": "~6.0.3"
+  },
+  "type": "module",
+  "dependencies": {
+    "@openzeppelin/contracts": "^5.6.1",
+    "dotenv": "^18.0.8"
+  }
+}

tokenizerRendu/code/scripts/send-op-tx.ts

@@ -0,0 +1,22 @@
+import { network } from "hardhat";
+
+const { ethers } = await network.create({
+  network: "hardhatOp",
+  chainType: "op",
+});
+
+console.log("Sending transaction using the OP chain type");
+
+const [sender] = await ethers.getSigners();
+
+console.log("Sending 1 wei from", sender.address, "to itself");
+
+console.log("Sending L2 transaction");
+const tx = await sender.sendTransaction({
+  to: sender.address,
+  value: 1n,
+});
+
+await tx.wait();
+
+console.log("Transaction sent successfully");

tokenizerRendu/code/test/Counter.ts

@@ -0,0 +1,36 @@
+import { expect } from "chai";
+import { network } from "hardhat";
+
+const { ethers } = await network.create();
+
+describe("Counter", function () {
+  it("Should emit the Increment event when calling the inc() function", async function () {
+    const counter = await ethers.deployContract("Counter");
+
+    await expect(counter.inc()).to.emit(counter, "Increment").withArgs(1n);
+  });
+
+  it("The sum of the Increment events should match the current value", async function () {
+    const counter = await ethers.deployContract("Counter");
+    const deploymentBlockNumber = await ethers.provider.getBlockNumber();
+
+    // run a series of increments
+    for (let i = 1; i <= 10; i++) {
+      await counter.incBy(i);
+    }
+
+    const events = await counter.queryFilter(
+      counter.filters.Increment(),
+      deploymentBlockNumber,
+      "latest",
+    );
+
+    // check that the aggregated events match the current value
+    let total = 0n;
+    for (const event of events) {
+      total += event.args.by;
+    }
+
+    expect(await counter.x()).to.equal(total);
+  });
+});

tokenizerRendu/code/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "lib": ["es2023"],
+    "module": "node20",
+    "target": "es2023",
+    "skipLibCheck": true,
+    "outDir": "dist",
+    "types": ["node", "mocha"],
+    "verbatimModuleSyntax": true
+  }
+}