fix(ci): point rainix-sol-artifacts at RPC_URL_ETHEREUM_FORK (fixes main red, #283)

[thedavidmeister]

Fixes the rainix-sol-artifacts failure red on main — diagnosed in #283.

Root cause

test.yml fed ETH_RPC_URL from CI_DEPLOY_SEPOLIA_RPC_URL, a legacy org secret that was removed when the org's RPC secrets were consolidated to the canonical RPC_URL_*_FORK scheme. With the secret empty, forge script --rpc-url "" treats the empty URL as a local path and "connection refused"s against the job cwd (test/fixture/) — the misleading error in #283. test.yml is byte-identical since the last green run; only the secret's value flipped to empty.

Fix

The rainix-sol-artifacts task only simulates script/Deploy.sol (forge script … --rpc-url "$ETH_RPC_URL", no --broadcast in CI), so it just needs a working eth fork RPC — not sepolia specifically. Repoint ETH_RPC_URL to the surviving RPC_URL_ETHEREUM_FORK.

One line in test.yml. yamlfmt clean. This is the canonical fork-RPC secret the rest of the org's CI already reads, so no new secret is needed.

Closes #283.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated CI configuration to use the designated Ethereum fork RPC endpoint for automated test runs.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: a4f63c1d-4723-4a1b-9c30-6ad32654cbca

📥 Commits

Reviewing files that changed from the base of the PR and between 8583c77 and 9fda95e.

📒 Files selected for processing (1)

• .github/workflows/test.yml

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📝 Walkthrough

Walkthrough

The CI test workflow changes ETH_RPC_URL to use the Ethereum fork RPC secret and variable fallback instead of the Sepolia deployment RPC configuration.

Changes

Ethereum fork RPC configuration

Layer / File(s)	Summary
Update CI RPC source .github/workflows/test.yml	ETH_RPC_URL now resolves from RPC_URL_ETHEREUM_FORK secret or variable values.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• rainlanguage/rainix#274: Both changes configure CI Ethereum RPC URLs from Ethereum fork RPC settings.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the CI fix and references the affected workflow and issue.
Linked Issues check	✅ Passed	The workflow now uses the canonical RPC_URL_ETHEREUM_FORK secret, satisfying #283's need for a valid ETH_RPC_URL.
Out of Scope Changes check	✅ Passed	The change is narrowly scoped to swapping the RPC secret in .github/workflows/test.yml.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-artifacts-rpc-secret

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