feat: auto-close sessions when owner exits

[Beforerr]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 46.61654% with 71 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
go/owner.go	23.07%	27 Missing and 3 partials ⚠️
go/main.go	37.03%	17 Missing ⚠️
go/proc_linux.go	50.00%	11 Missing and 1 partial ⚠️
go/daemon.go	20.00%	8 Missing ⚠️
go/manager.go	87.87%	3 Missing and 1 partial ⚠️

Files with missing lines	Coverage Δ
go/session.go	76.45% <ø> (ø)
go/manager.go	82.75% <87.87%> (+0.49%)	⬆️
go/daemon.go	77.33% <20.00%> (-2.76%)	⬇️
go/proc_linux.go	50.00% <50.00%> (ø)
go/main.go	59.41% <37.03%> (-2.04%)	⬇️
go/owner.go	23.07% <23.07%> (ø)

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