Provide a single-command local substrate-contracts-node Spin-up

[nanaf6203-bit]

Problem Statement

Setup is a multi-step puzzle (install substrate-node, install cargo-contract, migrate DB); no single command.

Why it matters

First-time developer productivity.

Technical Context

Add scripts/local-node.sh installing & running substrate-contracts-node with pinned version.

Expected Outcome

./scripts/local-node.sh brings the node up in < 60 s.

Acceptance Criteria

1. Script verifies Rust/Node deps.
2. README updated.
3. Smoke test passes.
4. Cross-OS tests.

Implementation Notes

Bash + curl + check.

Files or modules likely to be affected

scripts/local-node.sh.

Dependencies

None.

Difficulty level

MEDIUM.

Estimated effort

M (~2 days).

[emickwrld]

@emickwrld has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Good morning! I would like to work on this issue.

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[To0yeni]

@To0yeni has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this as I am an experienced software developer and I deliver on time.

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[Superray23]

@Superray23 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

can i work on this ???

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Congratulations, @Superray23! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

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This issue has been completed by @Superray23 as part of the Stellar Wave Program's 7th Wave 🥳

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