feat: add peer transport preference modes

[caozhengming]

Fixes #7830

Summary

• add TorTcp and TcpTor peer transport modes, with TcpTor as the default
• restrict peer protocol availability per mode and apply transport preference order before dialing addresses
• add unit coverage for mode protocol order and dial address ordering
• add a Cucumber feature covering all four peer transport modes

Validation

• git diff --check
• cargo fmt/test not run locally because this Windows environment does not have cargo/rustfmt installed

[github-actions]

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[gemini-code-assist]

Code Review

This pull request introduces new transport types, TorTcp and TcpTor, and updates the default transport configuration to TcpTor. It implements logic to prioritize and sort dial addresses based on the selected transport's protocol preferences. Additionally, it refines protocol support for existing transport types, such as restricting the Tor transport to the Onion protocol, and includes comprehensive unit and integration tests to verify these changes. I have no feedback to provide.

[SWvheerden]

this above needs updating as well

[SWvheerden]

this part is still not correct

[SWvheerden]

fill in the default here

[SWvheerden]

this is simply unit tests parading as cucumber tests, cucumber tests will test connectivity and the dailed addresses between actual running nodes

[caozhengming]

Thanks for the review. I pushed dd9a84f addressing the requested changes:

• updated the TCP initialization path so the explicit TCP mode is logged and kept TCP-only even if legacy tor_socks_address config is present; mixed TCP/Tor modes continue through the hidden-service variants
• filled the config default wording for tcp.tor_socks_address as none in the base node and wallet presets
• removed the cucumber feature/steps that were only unit-style assertions, leaving the protocol/preference behavior covered by unit tests instead of presenting them as integration connectivity coverage

The commit is SSH-signed and the signed-commit check is green. I could not run the Rust test suite locally in this environment because cargo is not installed.

[SWvheerden]

there is that missing part in initi thats not correct

[caozhengming]

Thanks, I found the remaining initialization issue and pushed 8b38730. The explicit Tcp transport branch no longer configures the legacy tor_socks_address proxy path, so Tcp stays TCP-only. The mixed TcpTor/TorTcp modes continue through the Tor hidden-service transport branch where the protocol availability/order is set from the selected TransportType.\n\nVerification: git diff --check. I still cannot run the Rust tests locally because cargo is not installed in this environment.