fix: Suppress non-PMG error from Critical UI Error (#311)

* fix: Suppress non-PMG error from Critical UI Error

* fix: Code review fixes

---------

Co-authored-by: Sahil Bansal <bansalsahil315@gmail.com>

internal/proc/signal_other.go

@@ -0,0 +1,10 @@
+//go:build windows
+
+package proc
+
+// SignalInfo on non-unix platforms cannot decode signal termination from the
+// process status, so it always reports not-signaled and the raw exit code is
+// used verbatim by callers.
+func SignalInfo(_ any) (signum int, signaled bool) {
+	return 0, false
+}