- Skip SetupToolServer for paused sessions during restore
- Pause() and Resume() now persist state to disk
- Resume() sets up tool server from scratch for sessions restored paused
- IsConnected() returns false when paused
- Add SetPaused(), SetToolServer() methods
- ProcessKeeper.SetContext() for resume after pause
- Session index sorts active-first, paused-last
- CreateAgent accepts name= parameter
- Remove duplicate SetCwd method
ProcessKeeper maintains a running ollie-remote process and respawns
it on failure. Multiple agents Dial() the same keeper to get
independent connections. If the process dies, the next Dial()
triggers a respawn (up to 3 attempts with backoff).
All session creation and restore paths now use ProcessKeeper.
Kill/Shutdown close the keeper (which closes the current process).
This fixes 'connection closed' errors persisting indefinitely
after ollie-remote crashes — the next tool call respawns it.