feat(core): expand runtime/tools surfaces

[gismo212]

Summary

• Expand core runtime/tool/CLI/provider surfaces.
• Update CI and add new helper tools (git_tools, disk).

Test plan

• From rust/: cargo fmt
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace

[gismo212]

CI is currently blocked with �ction_required (fork PR workflow approval).

Maintainers: could you please Approve and run the Rust CI workflow for this PR?

Thanks!

[gismo212]

Update: rebased pr/core-runtime-cli onto latest main and resolved merge conflicts.

PR should now be mergeable; remaining status is gated on CI approval (action_required) and checks.

[code-yeongyu]

This PR has merge conflicts. Please rebase onto main and resolve conflicts.

[code-yeongyu]

Please rebase onto main and force-push — this PR has merge conflicts with the current main. Thanks!

[1716775457damn]

The runtime/tools surface expansion looks solid. Adding git_tools and disk as new helpers is a good coverage addition. CI gates (fmt + clippy -D warnings + test) are correctly enforced. One question: are git_tools and disk fully implemented in this PR or just stubbed out? If stubbed, worth noting in the description so reviewers know what's coming next.