ci: chainspec sync check

[x3c41a]

Summary

• Add CI workflow that boots polkadot-omni-node for each chainspec in chainspecs/ and waits until it imports a few blocks
• polkadot-omni-node version (and SHA256) is pinned in the workflow itself
• Matrix runs Polkadot, Westend, Paseo Next, and Paseo Next v2 in parallel, each against a public relay-chain RPC

Triggers

• Pushes/PRs that touch chainspecs/ or the workflow itself
• workflow_dispatch

Follow-up to

• Add Bulletin chainspecs for Polkadot, Westend, and Paseo #523

[bkontur]

Let's use the same download mechanism:

polkadot-bulletin-chain/.github/workflows/integration-test.yml

Lines 129 to 146 in 273b188

	- name: Restore binary cache
	uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
	with:
	path: |
	${{ env.POLKADOT_BINARIES_DIR }}/polkadot-node
	${{ env.POLKADOT_BINARIES_DIR }}/chain-spec-builder
	${{ env.POLKADOT_BINARIES_DIR }}/zombienet
	key: polkadot-binaries-${{ runner.os }}-${{ env.POLKADOT_NODE_VERSION }}-${{ env.CHAIN_SPEC_BUILDER_VERSION }}-${{ env.ZOMBIENET_VERSION }}
	fail-on-cache-miss: true
	- name: Resolve binary directories + add to PATH
	run: |
	POLKADOT_DIR="$(just binaries-polkadot)"
	CSB_DIR="$(just binaries-chain-spec-builder)"
	ZN_DIR="$(just binaries-zombienet)"
	echo "$POLKADOT_DIR" >> "$GITHUB_PATH"
	echo "$CSB_DIR" >> "$GITHUB_PATH"
	echo "$ZN_DIR" >> "$GITHUB_PATH"

@karolk91 not sure if just ${{ env.POLKADOT_BINARIES_DIR }}/polkadot-omni-node works

Suggested change

	- name: Cache polkadot-omni-node
	uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
	id: omni-node-cache
	with:
	path: ${{ env.OMNI_NODE_BIN_DIR }}
	key: omni-node-${{ env.OMNI_NODE_VERSION }}
	- name: Download polkadot-omni-node
	if: steps.omni-node-cache.outputs.cache-hit != 'true'
	run: |
	mkdir -p "$OMNI_NODE_BIN_DIR"
	cd "$OMNI_NODE_BIN_DIR"
	curl -fL -o polkadot-omni-node \
	"https://github.com/paritytech/polkadot-sdk/releases/download/${OMNI_NODE_VERSION}/polkadot-omni-node"
	echo "${OMNI_NODE_SHA256} polkadot-omni-node" | sha256sum -c -
	chmod +x polkadot-omni-node

[x3c41a]

done

[bkontur]

@x3c41a @karolk91 I think we need to run "setup" before matrix job, because all took 16min:
https://github.com/paritytech/polkadot-bulletin-chain/actions/runs/25871727728/job/76028482209?pr=537#step:6:32
https://github.com/paritytech/polkadot-bulletin-chain/actions/runs/25871727728/job/76028482294?pr=537#step:6:32

Cache not found for input keys: polkadot-node-Linux-d6a4f5977b39bf5e5152e2f2bb6719ea92b992ea

[karolk91]

Yes, I was also looking at this. Here is some attempt to make it easier to handle these binaries+caches: #540. If we merge that then this job would need to do something like:

1. Outside of matrix job - to be run only by single runner, so if we need to recompile for some reason, then it will be only done on a single runner

      - name: Set up Polkadot binaries
        uses: ./.github/actions/use-polkadot-binaries
        with:
          groups: polkadot-node
          mode: prepare

2. Then inside a matrix job:

      - name: Set up Polkadot binaries
        uses: ./.github/actions/use-polkadot-binaries
        with:
          groups: polkadot-node
          mode: consume