Resume Session picker silently drops conversations

Description

The Resume Session picker (claude -r / Ctrl+A to show all) silently drops certain conversations from the list. The conversation file exists on disk, is valid, is indexed in history.jsonl, and can be resumed directly by ID — but it does not appear in the picker UI, even when searching.

Steps to Reproduce

1. Have a long conversation session (~23MB, 1786 lines of valid JSONL)
2. End the session, start a new one
3. Open the resume picker (claude -r or claude --resume)
4. Press Ctrl+A to show all conversations
5. Search for keywords from the missing conversation

Expected Behavior

All valid conversation files should appear in the resume picker.

Actual Behavior

The conversation is missing from the picker entirely. Searching for keywords that exist in the first message does not find it. The picker shows 25 of 136 total sessions, and this one is excluded despite being the 3rd most recent.

Investigation

• The .jsonl file is valid (1786 lines, 0 bad JSON lines)
• The session has 60 entries in ~/.claude/history.jsonl
• File structure (entry types, keys, metadata) is identical to conversations that DO appear
• Same Claude Code version (2.1.41), same permissionMode, same gitBranch
• The session-env directory exists (empty, same as all other sessions)
• An older, larger conversation (31MB) from the same project directory DOES appear
• The only minor difference: the missing conversation's first user message entry includes an imagePasteIds key that working ones don't have

Workaround

Direct resume by session ID works fine:

claude --resume <session-id>

Environment

• Claude Code version: 2.1.41
• Platform: macOS (Darwin 24.6.0)
• Shell: zsh
• Total sessions in history: 136
• Picker shows: 25 sessions (with Ctrl+A)

🤖 Generated with Claude Code