docs: align Infinity hook code examples with CLBaseHook pattern (2026-04-20) — high-risk

docs/pages/contracts/infinity/guides/develop-a-hook.mdx

@@ -56,7 +56,7 @@ contract CLCounterHook is CLBaseHook {
 
   // 2. For each callback required, overwrite the method
   function _beforeAddLiquidity(address, PoolKey calldata key, ICLPoolManager.ModifyLiquidityParams calldata, bytes calldata)
-    external override poolManagerOnly returns (bytes4) {
+    internal override returns (bytes4) {
       // implement hook logic and then return selector
       return this.beforeAddLiquidity.selector;
   }
@@ -119,10 +119,10 @@ contract VeCakeSwapDiscountHook is CLBaseHook { // [!code focus]
                 afterSwap: false,
                 beforeDonate: false,
                 afterDonate: false,
-                beforeSwapReturnsDelta: false,
-                afterSwapReturnsDelta: false,
-                afterAddLiquidityReturnsDelta: false,
-                afterRemoveLiquidityReturnsDelta: false
+                beforeSwapReturnDelta: false,
+                afterSwapReturnDelta: false,
+                afterAddLiquidityReturnDelta: false,
+                afterRemoveLiquidityReturnDelta: false
             })
         );
     }
@@ -151,8 +151,8 @@ function setLpFee(PoolKey calldata key, uint24 lpFee) external {
 Note the return value need to include `LPFeeLibrary.OVERRIDE_FEE_FLAG` so pool manager knows the intention is to override swap fee.
 
 ```solidity
-function beforeSwap(address, PoolKey calldata key, ICLPoolManager.SwapParams calldata, bytes calldata)
-    external view override poolManagerOnly returns (bytes4, BeforeSwapDelta, uint24)
+function _beforeSwap(address, PoolKey calldata key, ICLPoolManager.SwapParams calldata, bytes calldata)
+    internal view override returns (bytes4, BeforeSwapDelta, uint24)
 {
     uint24 lpFee = poolIdToLpFee[key.toId()];
 

docs/pages/contracts/infinity/guides/hook-examples/overwriting-amm-curve.mdx

@@ -29,7 +29,7 @@ For example if the user swap `exactIn 100 token0 for token1` with `-100 amountSp
 
 Take note of 
 
-1. The hook permission which includes `beforeSwapReturnsDelta` as the hook modify the delta in beforeSwap.
+1. The hook permission which includes `beforeSwapReturnDelta` as the hook modify the delta in beforeSwap.
 2. How the hook take/settle the currency and the BeforeSwapDelta returned.
 
 <details>

docs/pages/contracts/infinity/guides/hook-examples/taking-fee-via-hook.mdx

@@ -21,14 +21,14 @@ In the `afterRemoveLiquidity()` callback, we calculate the fee based on the amou
 
 ```solidity
 /// @param delta The caller's balance delta after removing liquidity; the sum of principal delta, fees accrued, and hook delta
-function afterRemoveLiquidity
+function _afterRemoveLiquidity
     (address sender,
     PoolKey calldata key,
     ICLPoolManager.ModifyLiquidityParams calldata params,
     BalanceDelta delta,
     BalanceDelta feesAccrued,
     bytes calldata hookData
-) external override poolManagerOnly returns (bytes4, BalanceDelta) {
+) internal override returns (bytes4, BalanceDelta) {
 
     // calculate how much fee
     uint128 amt0Fee = uint128(delta.amount0()) / 10;
@@ -39,7 +39,7 @@ function afterRemoveLiquidity
 
 Take note of 
 
-1. The hook permission which includes `afterRemoveLiquidityReturnsDelta` as the hook modify the delta in afterRemoveLiquidity().
+1. The hook permission which includes `afterRemoveLiquidityReturnDelta` as the hook modify the delta in afterRemoveLiquidity().
 
 <details>
     <summary> View complete source code here </summary>

docs/pages/contracts/infinity/overview/custom-layer-hook.mdx

@@ -33,10 +33,10 @@ function getHooksRegistrationBitmap() external pure override returns (uint16) {
       afterDonate: false,
 
       // Hook return delta (documented below)
-      beforeSwapReturnsDelta: false,
-      afterSwapReturnsDelta: false,
-      afterAddLiquidityReturnsDelta: false,
-      afterRemoveLiquidityReturnsDelta: false
+      beforeSwapReturnDelta: false,
+      afterSwapReturnDelta: false,
+      afterAddLiquidityReturnDelta: false,
+      afterRemoveLiquidityReturnDelta: false
     })
   );
 }
@@ -72,10 +72,10 @@ function getHooksRegistrationBitmap() external pure override returns (uint16) {
     Permissions({
 
       // The 4 permissions around modifying return delta
-      beforeSwapReturnsDelta: false, // during beforeSwap 
-      afterSwapReturnsDelta: false, // during afterSwap 
-      afterAddLiquidityReturnsDelta: false, // during afterAddLiquidity 
-      afterRemoveLiquidityReturnsDelta: false // during afterRemoveLiquidity
+      beforeSwapReturnDelta: false, // during beforeSwap 
+      afterSwapReturnDelta: false, // during afterSwap 
+      afterAddLiquidityReturnDelta: false, // during afterAddLiquidity 
+      afterRemoveLiquidityReturnDelta: false // during afterRemoveLiquidity
     })
   );
 }