feat: automate builder-playground P2P configuration

The playground-env target extracts the builder-playground host IP and
op-node peer ID from logs, eliminating manual configuration. Running
'just sync-env' now automatically generates the correct P2P static peer
configuration for connecting to builder-playground.

Author: niran

.env.example

@@ -31,10 +31,9 @@ TIPS_UI_S3_SECRET_ACCESS_KEY=minioadmin
 OP_NODE_NETWORK=
 OP_NODE_ROLLUP_CONFIG=/data/rollup.json
 OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
-OP_NODE_SYNCMODE=consensus-layer
 OP_NODE_L1_ETH_RPC=http://host.docker.internal:8545
 OP_NODE_L1_BEACON=http://host.docker.internal:3500
-OP_NODE_L1_RPC_KIND=debug_geth
+OP_NODE_L1_RPC_KIND=basic
 OP_NODE_L1_TRUST_RPC=false
 OP_NODE_L2_ENGINE_KIND=reth
 OP_NODE_L2_ENGINE_AUTH=/data/jwtsecret
@@ -43,7 +42,7 @@ OP_NODE_P2P_LISTEN_TCP_PORT=9222
 OP_NODE_P2P_LISTEN_UDP_PORT=9222
 OP_NODE_P2P_INTERNAL_IP=true
 OP_NODE_P2P_ADVERTISE_IP=host.docker.internal
-OP_NODE_P2P_NO_DISCOVERY=true
+OP_NODE_P2P_NO_DISCOVERY=false
 OP_NODE_RPC_ADDR=0.0.0.0
 OP_NODE_RPC_PORT=8545
 OP_NODE_LOG_LEVEL=debug

.gitignore

@@ -19,6 +19,7 @@ Thumbs.db
 # Environment variables
 .env
 .env.docker
+.env.playground
 /ui/.env
 
 # Claude

justfile

@@ -25,14 +25,25 @@ sync: deps-reset
     ###    REFORMAT   ###
     just fix
 
-sync-env:
+playground-env:
+    #!/bin/bash
+    HOST_IP=$(docker run --rm alpine nslookup host.docker.internal | awk '/Address: / && $2 !~ /:/ {print $2; exit}')
+    PEER_ID=$(grep 'started p2p host' ~/.playground/devnet/logs/op-node.log | sed -n 's/.*peerID=\([^ ]*\).*/\1/p' | head -1)
+    echo "BUILDER_PLAYGROUND_HOST_IP=$HOST_IP" > .env.playground
+    echo "BUILDER_PLAYGROUND_PEER_ID=$PEER_ID" >> .env.playground
+    echo "OP_NODE_P2P_STATIC=/ip4/$HOST_IP/tcp/9003/p2p/$PEER_ID" >> .env.playground
+    cat .env.playground
+
+sync-env: playground-env
     cp .env.example .env
     cp .env.example ./ui/.env
     cp .env.example .env.docker
     # Change kafka ports
     sed -i '' 's/localhost:9092/host.docker.internal:9094/g' ./.env.docker
     # Change other dependencies
     sed -i '' 's/localhost/host.docker.internal/g' ./.env.docker
+    # Append playground-specific P2P config
+    cat .env.playground >> .env.docker
 
 stop-all:
     export COMPOSE_FILE=docker-compose.yml:docker-compose.tips.yml && docker compose down && docker compose rm && rm -rf data/