fix: config.ts reads infrastructure.weth but no tooling generates it (#611)

Add infrastructure.weth to deployments-local.json output in both
bootstrap-common.sh (write_deployments_json) and bootstrap-light.sh,
so non-Base local forks get the correct WETH address from the
deployment file instead of silently falling back to the Base hardcode.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/bootstrap-common.sh

@@ -254,6 +254,9 @@ write_deployments_json() {
     "Stake": "$STAKE",
     "LiquidityManager": "$LIQUIDITY_MANAGER",
     "OptimizerProxy": "$OPTIMIZER_PROXY"
+  },
+  "infrastructure": {
+    "weth": "$WETH"
   }
 }
 EODEPLOYMENTS