[BUG] Opening a new session without --resume does not clear session history (and /clear doesn't actually clear)

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ X] Other: <!-- specify -->
• Claude CLI version: 1.0.96 (Claude Code)
• Operating System: Ubuntu 22.04
• Terminal: VS Code Terminal

Bug Description

<!-- A clear and concise description of the bug -->

Steps to Reproduce

1. Start a session and exit.
2. Start new session without --resume → fresh session (correct)
3. Close session and VS Code
4. Reopen VS Code, start new session without --resume → still fresh, no history (correct)
5. Close that session, then start another session WITH --resume → unexpectedly restores the

original history from step 1

ALSO same thing happens after typing /clear and closing/restarting -- history is still present.

Expected Behavior

Based on what claude has told me, I expected the history to be permanently unavailable

Actual Behavior

as described in step 5 above.

Additional Context

I'm not saying this is behavior is a terrible thing, except when one has confidential information in the session history and would like to see it completely gone after a /clear. IN any event the behavior and the documentation are out of sync.