[FEATURE] Global session search across all projects in --resume picker

Feature request

Currently claude --resume only searches sessions in the current project. Sessions in other projects are invisible.

Running claude --resume <session-id> also fails when not in the same project directory.

Proposed solution

1. claude --resume picker should have a "global" scope option (e.g., --all flag or a toggle binding in the picker)
2. Or: claude --resume <session-id> should find the session in any project, not just the current one (auto-detect the project from the session file)

Workaround

I currently use a shell script that scans ~/.claude/projects/*/*.jsonl to find sessions globally.

Environment

• Platform: Windows
• Version: 2.1.126