Add shadow block builder stack for testing in production #20
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Introduces a shadow block building stack that runs in parallel with the production sequencer for testing purposes. The builder syncs from production but does not submit blocks to L1, making it safe for testing TIPS bundle integration.
Changes:
- Add builder-cl and builder services to docker-compose.yml
- builder-cl: op-node in sequencer mode syncing from production via P2P
- builder: op-rbuilder instance that queries TIPS datastore and builds
blocks with eligible bundles (blocks are not submitted to L1)
- Add build-rbuilder command to justfile for building op-rbuilder Docker
image with TIPS datastore integration
- Consolidate op-node environment configuration into .env.example and use
env_file in docker-compose.yml to share common config between
simulator-cl and builder-cl
- Update justfile commands to support multiple compose profiles
- Rename start-playground to start-builder
- Update stop-all/start-all to accept comma-separated profiles
- Document simulator and shadow block builder stack in README.md with
prerequisites and quick start instructions
Replace BundleWithLatestSimulation struct with a simple tuple (BundleWithMetadata, Simulation) for select_bundles_with_latest_simulation return values. This eliminates awkward naming in consuming code by allowing direct destructuring instead of verbose field access patterns like `result.bundle_with_metadata.bundle.block_number`.
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Introduces a shadow block building stack that runs in parallel with the production sequencer for testing purposes. The builder syncs from production but does not submit blocks to L1, making it safe for testing TIPS bundle integration.
Changes: