feat: T1016 dns_config probe + server-side drift detection + Crucible DNS DRIFT badge

agent/client/resource_pressure_test.go

@@ -0,0 +1,55 @@
+package client
+
+import "testing"
+
+func TestResourcePressureDiskPressure(t *testing.T) {
+	if (&ResourcePressure{}).DiskPressure() {
+		t.Fatal("nil pct should not pressure")
+	}
+	low := 5
+	if !(&ResourcePressure{DiskFreePct: &low}).DiskPressure() {
+		t.Fatal("5% should be disk pressure")
+	}
+	ok := 15
+	if (&ResourcePressure{DiskFreePct: &ok}).DiskPressure() {
+		t.Fatal("15% should not pressure")
+	}
+}
+
+func TestResourcePressureThermalPressure(t *testing.T) {
+	if (&ResourcePressure{}).ThermalPressure() {
+		t.Fatal("empty should not pressure")
+	}
+	cpuHot := 90
+	if !(&ResourcePressure{CPUTempC: &cpuHot}).ThermalPressure() {
+		t.Fatal("cpu > 85 should pressure")
+	}
+	cpuOK := 80
+	gpuHot := 85
+	if !(&ResourcePressure{CPUTempC: &cpuOK, GPUTempC: &gpuHot}).ThermalPressure() {
+		t.Fatal("gpu > 82 should pressure")
+	}
+}
+
+func TestResourcePressureThrottled(t *testing.T) {
+	if (&ResourcePressure{}).Throttled() {
+		t.Fatal("nil throttle false")
+	}
+	yes := true
+	if !(&ResourcePressure{CPUThrottle: &yes}).Throttled() {
+		t.Fatal("throttle true")
+	}
+	no := false
+	if (&ResourcePressure{CPUThrottle: &no}).Throttled() {
+		t.Fatal("throttle false")
+	}
+}
+
+func TestResourcePressureJSONOmitempty(t *testing.T) {
+	freq := 3000
+	r := ResourcePressure{CPUFreqMHz: &freq}
+	// smoke: struct tags compile; fields accessible
+	if r.CPUFreqMHz == nil || *r.CPUFreqMHz != 3000 {
+		t.Fatal("field set")
+	}
+}