Fix plugin remove verbose output

[OnlyYu1996]

Summary

• pass the global --verbose flag into plugin command dispatch
• make cortex plugin remove --verbose print removal context before and after deletion
• fix a stale test import so the cortex-cli lib test harness can compile

Fixes PlatformNetwork/bounty-challenge#53152.

Validation

• cargo +stable fmt --package cortex-cli --check
• cargo +stable check -p cortex-cli --lib
• cargo +stable test -p cortex-cli --lib test_plugin_remove_verbose_lines_include_extra_context -- --nocapture
• smoke: default plugin remove prints only success; --verbose plugin remove prints plugin path, confirmation mode, post-removal existence, and plugins directory

[greptile-apps]

Your free trial has ended. If you'd like to continue receiving code reviews, you can add a payment method here.