core: no timeouts on subprocess and network calls (runCommand, npm view, npx)

[Dione-b]

Summary

No subprocess or network call in @caatinga/core has a timeout:

• runCommand passes no timeout to execa (packages/core/src/shell/run-command.ts:31-37)
• checkStellarSdkVersion shells out to npm view @stellar/stellar-sdk version (packages/core/src/stellar-sdk/check-stellar-sdk-version.ts:29-34) — a network call
• generateBindings runs npx --yes ... which downloads a package from the registry on every generate (packages/core/src/contracts/generate-bindings.ts:70-89)

Why it matters

A stalled registry, wedged network, or hung stellar process hangs the CLI forever with no error, no hint, and no user recourse.

Suggested fix

• Add a configurable timeout (e.g. 60s) to RunCommandOptions and wire it into the npm view / npx calls
• On timeout, throw a CaatingaError with a hint (e.g. "the command exceeded 60s; check network/registry availability")
• Test: a sleeping command times out and surfaces the dedicated error

Priority: High | Release impact: Patch | Breaking: No

[dolaoluwa574-source]

@dolaoluwa574-source has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Allow me fix this quickly

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[meindinojames-del]

@meindinojames-del has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I will love to work on this issue

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[Galmanus]

@Galmanus has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

PR #183. Subprocess and network calls had no timeout, so a hung call could block a command forever. The fix adds a configurable timeout and a dedicated error when it fires. Covered by a test; full core suite passes.

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