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/miner/schedule_test.go

@@ -0,0 +1,31 @@
+package miner
+
+import (
+	"testing"
+	"time"
+
+	"crypto-miner-agent/config"
+	"crypto-miner-agent/stats"
+)
+
+func parseTestTime(hour, minute int) time.Time {
+	return time.Date(2026, 5, 26, hour, minute, 0, 0, time.UTC)
+}
+
+func TestScheduleGuardAlways(t *testing.T) {
+	guard := NewScheduleGuard(config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{MiningMode: "always"}}, stats.NewReporter())
+	if !guard.Allowed() {
+		t.Fatal("always mode should allow mining")
+	}
+}
+
+func TestScheduleGuardScheduledUsesConfigWindow(t *testing.T) {
+	cfg := config.RuntimeConfig{BuiltinConfig: config.BuiltinConfig{
+		MiningMode:    "scheduled",
+		ScheduleStart: "21:00",
+		ScheduleEnd:   "06:00",
+	}}
+	if !cfg.InScheduleWindow(parseTestTime(23, 0)) {
+		t.Fatal("expected overnight schedule to allow mining at 23:00")
+	}
+}