[Feature Request] Add /sessions and /resume commands with session deletion

Bug Description Like the OPENCODE CLI, could be implemented the option /sessions or /resume with parameter to delete the session using crtl+d (d+d - 2x). The /resume for openclaude is not good yet and create a lot of other splitted sessions.

Environment Info

• Platform: win32
• Terminal: cursor
• Version: 99.0.0