Add verbose diagnostics to CLI commands

[GreyforgeLabs]

Summary

• Add debug-level diagnostics to cortex agent list, including active filters and loaded/filtered agent counts.
• Add debug-level diagnostics to cortex github status, including target path, discovered workflow path, computed status flags, and features.
• Add binary regressions proving --verbose visibly changes output for both reported commands.

Fixes PlatformNetwork/bounty-challenge#51952.
Also addresses PlatformNetwork/bounty-challenge#51954.

Validation

• cargo test -p cortex-cli --test verbose_output --no-default-features --features cortex-tui -- --nocapture
• cargo check -p cortex-cli --no-default-features --features cortex-tui
• cargo fmt --package cortex-cli --check
• git diff --check

[greptile-apps]

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