feat: deployment scripts, E2E tests, and documentation

- DeployBase: shared deployment logic with OptimizerV3 UUPS proxy
- DeployBaseMainnet: Base mainnet configuration (feeDest, WETH, factory)
- DeployLocal: local Anvil deployment with OptimizerV3
- UpgradeOptimizer: UUPS upgrade script for existing proxy
- DEPLOYMENT_RUNBOOK: step-by-step mainnet deployment guide
- E2E tests: recenter position verification, optimizer integration
- Landing page: updated docs for OptimizerV3 and protocol changes
- Remove dead DeployScript2.sol

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

onchain/script/UpgradeOptimizer.sol

@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+pragma solidity ^0.8.19;
+
+import "../src/OptimizerV3.sol";
+import { UUPSUpgradeable } from "@openzeppelin/proxy/utils/UUPSUpgradeable.sol";
+import "forge-std/Script.sol";
+
+/**
+ * @title UpgradeOptimizer
+ * @notice Upgrades an existing Optimizer UUPS proxy to OptimizerV3 implementation.
+ * @dev Usage:
+ *   OPTIMIZER_PROXY=0x... forge script script/UpgradeOptimizer.sol \
+ *     --rpc-url <RPC_URL> --broadcast
+ *
+ *   The caller must be the proxy admin (the address that called initialize()).
+ */
+contract UpgradeOptimizer is Script {
+    function run() public {
+        address proxyAddress = vm.envAddress("OPTIMIZER_PROXY");
+        require(proxyAddress != address(0), "OPTIMIZER_PROXY env var required");
+
+        string memory seedPhrase = vm.readFile(".secret");
+        uint256 privateKey = vm.deriveKey(seedPhrase, 0);
+        vm.startBroadcast(privateKey);
+        address sender = vm.addr(privateKey);
+
+        console.log("\n=== Optimizer UUPS Upgrade ===");
+        console.log("Proxy address:", proxyAddress);
+        console.log("Admin (sender):", sender);
+
+        // Deploy new OptimizerV3 implementation
+        OptimizerV3 newImpl = new OptimizerV3();
+        console.log("New OptimizerV3 implementation:", address(newImpl));
+
+        // Upgrade proxy to new implementation (no reinitialize needed — storage layout compatible)
+        UUPSUpgradeable(proxyAddress).upgradeTo(address(newImpl));
+        console.log("Proxy upgraded to OptimizerV3");
+
+        // Verify upgrade by calling getLiquidityParams through the proxy
+        OptimizerV3 upgraded = OptimizerV3(proxyAddress);
+        (uint256 ci, uint256 as_, uint24 aw, uint256 dd) = upgraded.getLiquidityParams();
+        console.log("\n=== Post-Upgrade Verification ===");
+        console.log("capitalInefficiency:", ci);
+        console.log("anchorShare:", as_);
+        console.log("anchorWidth:", uint256(aw));
+        console.log("discoveryDepth:", dd);
+
+        vm.stopBroadcast();
+    }
+}