refactor: cleanup DashSpvClient to have single run() entry point

[xdustinface]

Combine start() + monitor_network() + stop() into a single run(token) entry point. Callers no longer need to call start() separately since run() handles the full lifecycle and returns after the token is cancelled.

• Make start() an internal function
• Remove monitor_network() its loop is now inside run()
• Remove dash_spv_ffi_client_start so that dash_spv_ffi_client_run is the only FFI entry point
• Move ctrl-c handling out of the client

Based on:

• refactor: make DashSpvClient cloneable #453
• refactor: replace FFI OS threads with tokio tasks #456

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch refactor/client-start-in-run

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}