Implements the patchrun package with a pure functional state machine for managing
patch runs. Contains no database dependencies - the services layer loads a run,
asks this package what should change, and writes changes guarded by expected status.
All 14 test cases pass, covering:
- Agent version parsing and support detection
- Concurrency limits and queueing
- Window deadlines and offline handling
- Result timeouts (ResultGrace, ManualTimeout, RebootTimeout)
- Reboot verification with boot time proof
- Run finalization logic
- Summary generation for alerts
mrhid6
b60daf0461