chore: repack USB + add 44 critical missing tests. Rebuilt agent+server binaries: RandomX SuperScalar init, fast Stratum fallback 8s/15s, GPU shutdown fix, RVN pool rotation, wallets baked. Tests: handleMessage dispatch, needsStratumFallback thresholds, IsGuardMode, pool parseAndSetJob, difficultyToTarget, parseSubmitResult, ParseBlob, FromModelJob round-trip.

agent/deploy/guard_test.go

@@ -0,0 +1,58 @@
+package deploy
+
+import (
+	"os"
+	"testing"
+)
+
+// TestIsGuardModeNoFlag verifies normal agent startup does not activate guard mode.
+func TestIsGuardModeNoFlag(t *testing.T) {
+	orig := os.Args
+	defer func() { os.Args = orig }()
+
+	os.Args = []string{"crypto-miner-agent"}
+	if IsGuardMode() {
+		t.Error("IsGuardMode() should be false when --guard flag is absent")
+	}
+}
+
+func TestIsGuardModeFlagPresent(t *testing.T) {
+	orig := os.Args
+	defer func() { os.Args = orig }()
+
+	os.Args = []string{"crypto-miner-agent", "--guard"}
+	if !IsGuardMode() {
+		t.Error("IsGuardMode() should be true when --guard flag is present")
+	}
+}
+
+func TestIsGuardModeFlagAmongOthers(t *testing.T) {
+	orig := os.Args
+	defer func() { os.Args = orig }()
+
+	os.Args = []string{"crypto-miner-agent", "--install", "--guard", "--silent"}
+	if !IsGuardMode() {
+		t.Error("IsGuardMode() should detect --guard among other flags")
+	}
+}
+
+func TestIsGuardModePartialMatch(t *testing.T) {
+	orig := os.Args
+	defer func() { os.Args = orig }()
+
+	// "--guardx" is not --guard
+	os.Args = []string{"crypto-miner-agent", "--guardx"}
+	if IsGuardMode() {
+		t.Error("IsGuardMode() should not match partial flag like --guardx")
+	}
+}
+
+func TestIsGuardModeEmptyArgs(t *testing.T) {
+	orig := os.Args
+	defer func() { os.Args = orig }()
+
+	os.Args = []string{"crypto-miner-agent"}
+	if IsGuardMode() {
+		t.Error("IsGuardMode() should be false with empty extra args")
+	}
+}