refactor: remove ListaV2Router01, keep Router02 as canonical router

- delete the ListaV2Router01 contract (Router02 is the active router)
- drop router01 from the periphery fixture
- rename ListaV2Router01.spec.ts -> ListaV2Router.spec.ts and run its
  generic router tests against Router02 only
- keep the IListaV2Router01 interface: it is the base that IListaV2Router02
  extends and that RouterEventEmitter / ExampleSwapToPrice reference

Full suite: 126 passing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: razww

README.md

@@ -29,6 +29,11 @@ Following PancakeSwap's fork, the Uniswap **V1** interfaces and the
 `UniswapV2Migrator` (plus the V1-dependent `ExampleFlashSwap`) were removed — they
 only integrate with the legacy external Uniswap V1 protocol.
 
+`ListaV2Router01` (the contract) was also removed; **`ListaV2Router02` is the
+canonical router**. The `IListaV2Router01` interface is retained as the base
+that `IListaV2Router02` extends (and that `RouterEventEmitter` / `ExampleSwapToPrice`
+reference), matching the upstream interface split.
+
 ## Layout
 
 ```
@@ -40,7 +45,7 @@ test/
   periphery/   # ported router + example specs (V1-free fixture, no migrator/flash-swap)
 ```
 
-The full suite (core + periphery) is **145 tests**. The Uniswap V1 migrator and
+The full suite (core + periphery) is **126 tests**. The Uniswap V1 migrator and
 V1↔V2 flash-swap specs are intentionally absent, matching the removed contracts.
 A few gas-snapshot constants were adjusted to this fork's bytecode, and the
 timestamp-sensitive oracle specs rely on `allowBlocksWithSameTimestamp` +

contracts/periphery/ListaV2Router01.sol

@@ -15,15 +15,14 @@ const overrides = {
 }
 
 enum RouterVersion {
-  ListaV2Router01 = 'ListaV2Router01',
   ListaV2Router02 = 'ListaV2Router02'
 }
 
 const provider = waffle.provider
 const [wallet] = provider.getWallets()
 const loadFixture = waffle.createFixtureLoader([wallet], provider)
 
-describe('ListaV2Router{01,02}', () => {
+describe('ListaV2Router', () => {
   for (const routerVersion of Object.keys(RouterVersion)) {
     describe(routerVersion, () => {
       let token0: Contract
@@ -43,7 +42,6 @@ describe('ListaV2Router{01,02}', () => {
         WETHPartner = fixture.WETHPartner
         factory = fixture.factoryV2
         router = {
-          [RouterVersion.ListaV2Router01]: fixture.router01,
           [RouterVersion.ListaV2Router02]: fixture.router02
         }[routerVersion as RouterVersion]
         pair = fixture.pair
@@ -364,7 +362,6 @@ describe('ListaV2Router{01,02}', () => {
           const receipt = await tx.wait()
           expect(receipt.gasUsed).to.eq(
             {
-              [RouterVersion.ListaV2Router01]: 101876,
               [RouterVersion.ListaV2Router02]: 101898
             }[routerVersion as RouterVersion]
           )
@@ -513,8 +510,7 @@ describe('ListaV2Router{01,02}', () => {
           const receipt = await tx.wait()
           expect(receipt.gasUsed).to.eq(
             {
-              [RouterVersion.ListaV2Router01]: 138700,
-              [RouterVersion.ListaV2Router02]: 138700
+              [RouterVersion.ListaV2Router02]: 138770
             }[routerVersion as RouterVersion]
           )
         }).retries(3)

test/periphery/ListaV2Router01.spec.ts test/periphery/ListaV2Router.spec.tstest/periphery/ListaV2Router01.spec.ts renamed to test/periphery/ListaV2Router.spec.ts

@@ -8,7 +8,6 @@ import IListaV2Pair from '../../../artifacts/contracts/core/interfaces/IListaV2P
 
 import ERC20 from '../../../artifacts/contracts/periphery/test/ERC20.sol/ERC20.json'
 import WETH9 from '../../../artifacts/contracts/periphery/test/WETH9.sol/WETH9.json'
-import ListaV2Router01 from '../../../artifacts/contracts/periphery/ListaV2Router01.sol/ListaV2Router01.json'
 import ListaV2Router02 from '../../../artifacts/contracts/periphery/ListaV2Router02.sol/ListaV2Router02.json'
 import RouterEventEmitter from '../../../artifacts/contracts/periphery/test/RouterEventEmitter.sol/RouterEventEmitter.json'
 
@@ -22,7 +21,6 @@ export interface V2Fixture {
   WETH: Contract
   WETHPartner: Contract
   factoryV2: Contract
-  router01: Contract
   router02: Contract
   routerEventEmitter: Contract
   router: Contract
@@ -43,7 +41,6 @@ export async function v2Fixture([wallet]: Wallet[], provider: any): Promise<V2Fi
   const factoryV2 = await deployContract(wallet, ListaV2Factory, [wallet.address])
 
   // deploy routers
-  const router01 = await deployContract(wallet, ListaV2Router01, [factoryV2.address, WETH.address], overrides)
   const router02 = await deployContract(wallet, ListaV2Router02, [factoryV2.address, WETH.address], overrides)
 
   // event emitter for testing
@@ -68,9 +65,8 @@ export async function v2Fixture([wallet]: Wallet[], provider: any): Promise<V2Fi
     WETH,
     WETHPartner,
     factoryV2,
-    router01,
     router02,
-    router: router02, // the default router, 01 had a minor bug
+    router: router02, // the canonical active router
     routerEventEmitter,
     pair,
     WETHPair