[Bug] `--resume` creates new session_id instead of preserving original session identifier

Bug Description
claude --resume and choosing an existing session creates a new session_id, it should be the same as the one that session was using... that really bugs all our hooks that are based on resuming an existing session using its session_id

Environment Info

• Platform: linux
• Terminal: konsole
• Version: 2.0.31
• Feedback ID: fe78d84b-69f6-4fda-94b6-cae376e0a992

Errors

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Reproduce:

• start a new session: claude --session-id bc956f9d-b20f-4a99-8cff-d606c38ff906
• say hello
• /exit
• claude --resume
• choose your session
• /status and observe it is not the same session_id