sessionslisted

# Tandem Sessions Inspect the session registry at `~/.tandem/sessions/`. ## Steps 1. **List all session directories** under `~/.tandem/sessions/`. For each, read `state.json` and display: - Session ID - Project (basename of project path) - Branch - Status (active/ended) - Current task - Last heartbeat (and how long ago) - PID (and whether it's still alive: `kill -0 $pid`) 2. **Group by project** to show topology: which sessions share a project. 3. **Identify orphans**: sessions where the PID is dead or heartbeat is older than 5 minutes with a dead process. Offer to clean them up (delete the session directory) if found. ## Output format ``` Active Sessions: jonnyn-cv (2 sessions) abc123 main "building session topology" heartbeat: 30s ago pid: 12345 ✓ def456 main "fixing CSS layout" heartbeat: 2m ago pid: 12346 ✓ claude-tandem (1 session) ghi789 main "adding frontmatter schema" heartbeat: 1m ago pid: 12347 ✓ Orphaned Sessions: jkl012 jonnyn-cv pid: 99999 ✗ (dead) last heartbeat: 15m ago → Clean up? (delete ~/.tandem/sessions/jkl012/) ``` ## Arguments - No arguments: show all sessions - `clean`: force-clean all orphaned sessions without prompting - `<session-id>`: show detailed state.json for a specific session ## Implementation Use bash to read `~/.tandem/sessions/*/state.json` files. Check PIDs with `kill -0`. Calculate heartbeat age from the ISO timestamp. No external dependencies beyond jq.