chore: pull the plug on Postgres 🔌

[nelitow]

Summary

api-lite serves the explorer now (#699), so the Postgres GraphQL API, the syncer, the cosmos worker, and every chart, script and workflow that only existed to build, deploy or run them are gone. What is left of @fuel-explorer/graphql is the library both the frontend and api-lite import: schemas, generated SDK types, the domain layer and the value objects. The multi-megabyte block fixtures that were committed for parity checks go too; the fixture script still generates them on demand.

209 files changed, 179,476 lines deleted, 345 added. Nothing the explorer serves today changes.

Changes

Area	Change
graphql package	Deleted the Express and Yoga server, syncer, cosmos worker, pm2 configs, Postgres DAOs, repositories, migrations, workers and their tests; kept schemas, SDK, domain and value objects; runtime dependencies 36 to 9, dev dependencies 31 to 21
graphql config	config.ts reads only FUEL_PROVIDER, FUEL_CHAIN and DEBUG; .env.example trimmed to those, .env.production deleted
Deployment	Deleted the helm chart, cluster and minikube scripts, Tiltfile, deployment/Dockerfile, the docker-publish and helm-publish workflows, and the run and setup backend scripts
Local docker	Dropped the Postgres service, the indexer env file and the DB variables from docker/docker-compose.yml and docker/envs; the bridge profile used by e2e is unchanged
Root scripts	Removed run:backend, setup:backend, dev:graphql and dev:graphql:all
api-lite fixtures	Removed the committed fuel-core block dumps and ignored the directory; pnpm --filter api-lite fixture <height> regenerates them for parity runs
Docs	docs/GETTING_STARTED.md and the graphql README describe the api-lite setup

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated
fuel-explorer-v2-vite	Ready	Preview	Sep 3, 2026 10:21pm UTC

[cursor]

PR Summary

High Risk
Large deletion of production deployment (Helm, GHCR images, syncer/API) and local indexer paths; teams still on the old stack must migrate to api-lite or externalize those workflows.

Overview
Removes the Postgres-backed explorer backend now superseded by packages/api-lite (S3 block recorder + fuel-core, sqlite index). The @fuel-explorer/graphql package remains as a shared library (schemas, SDK, domain); the Express/Yoga server, syncer, workers, Postgres DAOs/migrations, and their tests are deleted per the broader PR.

Deployment and local dev paths for the old stack are dropped: Helm chart and publish workflow, Docker image build/publish workflow, deployment/Dockerfile, Tilt/minikube cluster/ tooling, and root scripts run:backend, setup:backend, dev:graphql*. Docker Compose no longer starts explorer Postgres or indexer GraphQL/syncer services; global.env and indexer.env lose DB/indexer settings. Docs (GETTING_STARTED, graphql README) point developers at api-lite and docker/vps/deploy.md.

Small api-lite hygiene: block parity fixtures (*.bin, *.fuelcore.json) are gitignored and fetched locally; measure-heap-multiplier.ts discovers fixtures from disk/CLI instead of hard-coded heights, with matching comment updates in BlockStore.ts.

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