Align CLI help category labels

[GreyforgeLabs]

Summary

• Rename peer help sections to Configuration Commands and Utility Commands so the labels use a consistent shared suffix.
• Keep the categorized quick-help block and clap category constants in sync.

Fixes PlatformNetwork/bounty-challenge#53134

Validation

• cargo fmt --package cortex-cli --check
• git diff --check
• cargo check -p cortex-cli --no-default-features --features cortex-tui
• cargo run -p cortex-cli --no-default-features --features cortex-tui --bin Cortex -- --help

[greptile-apps]

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