[FEAT] Add native session delete to permanently remove sessions

[MohammadShabib]

Is your feature request related to a problem? Please describe.

The session list in claude --resume and the dev tools UI grows over time with no way to permanently clean it up. While the dev tools UI has a "hide" feature, it only suppresses sessions within that tool — hidden sessions still appear when running claude --resume from the terminal. There's no way to truly remove a session across all surfaces.

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Describe the solution you'd like

A native delete command — such as /delete — that permanently removes the session files from disk, eliminating the session from both claude --resume and the dev tools UI entirely.

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Describe alternatives you've considered

The existing "hide" feature in the dev tools UI was the closest alternative, but it falls short for two reasons:

1. It does not delete the underlying files — data remains on disk
2. It is scoped to the dev tools UI only — hidden sessions still show up in claude --resume

Manually locating and deleting session files from the filesystem works, but is cumbersome and error-prone without knowing the exact file paths.

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Additional context

The community tool https://github.com/ataleckij/claude-chats-delete demonstrates that this is achievable and that there is clear user demand for it. Integrating something similar natively would make session management complete — users could create, rename, and delete sessions all from within the same toolchain.

[netopsengineer]

Would love this feature, having a bunch of empty sessions from opening the wrong project or context switching creates a mess.