Image paste fails in some Codex CLI sessions (Ctrl+V and Right-click Paste both fail)

What version of Codex is running?

• codex-cli 0.121.0
• @openai/codex@0.121.0

Platform

• OS: Windows NT 10.0.26200.0
• Shell: PowerShell 5.1
• Terminal: JetBrains-JediTerm (IDE integrated terminal)

Problem summary

Image paste works in some newly started Codex sessions, but fails in other sessions on the same machine/account.

Steps to reproduce

1. Start Codex interactive session A.
2. Copy an image to clipboard.
3. Try paste with Ctrl+V and also Right-click -> Paste.
4. No image is attached.
5. Start another Codex session B on same machine.
6. Repeat paste, image attaches normally.

Expected behavior

Image paste should be consistently available across sessions with same environment.

Actual behavior

Session-level inconsistency: some sessions accept image paste; others do not.
Both keyboard paste and context-menu paste fail in bad sessions, so this is not just a shortcut mapping issue.

Extra notes

• codex --help shows image input is supported (-i, --image <FILE>...).
• This looks like session/channel capability regression or initialization mismatch.