feat(status): add temperature display via osx-cpu-temp or powermetrics

cmd/status/metrics_battery.go

@@ -177,12 +177,54 @@ func collectThermal() ThermalStatus {
 		}
 	}
 
-	// Try to get CPU temperature using sudo powermetrics (may not work without sudo)
-	// Fallback: use SMC reader or estimate from thermal pressure
+	// 1. Try osx-cpu-temp (most accurate for users without sudo)
+	if commandExists("osx-cpu-temp") {
+		ctxTemp, cancelTemp := context.WithTimeout(context.Background(), 500*time.Millisecond)
+		defer cancelTemp()
+		if out, err := runCmd(ctxTemp, "osx-cpu-temp"); err == nil {
+			valStr := strings.TrimSpace(out)
+			valStr = strings.TrimSuffix(valStr, "°C")
+			valStr = strings.TrimSuffix(valStr, "C")
+			valStr = strings.TrimSpace(valStr)
+			if t, err := strconv.ParseFloat(valStr, 64); err == nil && t > 0 {
+				thermal.CPUTemp = t
+				return thermal
+			}
+		}
+	}
+
+	// 2. Try powermetrics (requires sudo, works on Apple Silicon)
+	if commandExists("powermetrics") {
+		// Only run if we are effectively root to avoid password prompt/failure delays
+		if os.Geteuid() == 0 {
+			ctxPower, cancelPower := context.WithTimeout(context.Background(), 2*time.Second)
+			defer cancelPower()
+			// Use thermal sampler
+			out, err := runCmd(ctxPower, "powermetrics", "-n", "1", "--samplers", "thermal", "-i", "100")
+			if err == nil {
+				lines := strings.Split(out, "\n")
+				for _, line := range lines {
+					if strings.Contains(line, "CPU die temperature") {
+						// Format: "CPU die temperature: 35.43 C"
+						parts := strings.Split(line, ":")
+						if len(parts) == 2 {
+							valStr := strings.TrimSpace(parts[1])
+							valStr = strings.TrimSuffix(valStr, " C")
+							if t, err := strconv.ParseFloat(valStr, 64); err == nil {
+								thermal.CPUTemp = t
+								return thermal
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+
+	// 3. Try thermal level as a proxy (fallback)
 	ctx2, cancel2 := context.WithTimeout(context.Background(), 500*time.Millisecond)
 	defer cancel2()
 
-	// Try thermal level as a proxy
 	out2, err := runCmd(ctx2, "sysctl", "-n", "machdep.xcpm.cpu_thermal_level")
 	if err == nil {
 		level, _ := strconv.Atoi(strings.TrimSpace(out2))

cmd/status/view.go

@@ -542,25 +542,26 @@ func renderBatteryCard(batts []BatteryStatus, thermal ThermalStatus) cardData {
 		if len(healthParts) > 0 {
 			lines = append(lines, subtleStyle.Render(strings.Join(healthParts, " · ")))
 		}
-
-		// Line 4: Temp + Fan combined
-		var thermalParts []string
-		if thermal.CPUTemp > 0 {
-			tempStyle := okStyle
-			if thermal.CPUTemp > 80 {
-				tempStyle = dangerStyle
-			} else if thermal.CPUTemp > 60 {
-				tempStyle = warnStyle
-			}
-			thermalParts = append(thermalParts, tempStyle.Render(fmt.Sprintf("%.0f°C", thermal.CPUTemp)))
-		}
-		if thermal.FanSpeed > 0 {
-			thermalParts = append(thermalParts, fmt.Sprintf("%d RPM", thermal.FanSpeed))
-		}
-		if len(thermalParts) > 0 {
-			lines = append(lines, strings.Join(thermalParts, " · "))
-		}
 	}
+
+	// Line 4: Temp + Fan combined
+	var thermalParts []string
+	if thermal.CPUTemp > 0 {
+		tempStyle := okStyle
+		if thermal.CPUTemp > 80 {
+			tempStyle = dangerStyle
+		} else if thermal.CPUTemp > 60 {
+			tempStyle = warnStyle
+		}
+		thermalParts = append(thermalParts, tempStyle.Render(fmt.Sprintf("%.0f°C", thermal.CPUTemp)))
+	}
+	if thermal.FanSpeed > 0 {
+		thermalParts = append(thermalParts, fmt.Sprintf("%d RPM", thermal.FanSpeed))
+	}
+	if len(thermalParts) > 0 {
+		lines = append(lines, strings.Join(thermalParts, " · "))
+	}
+
 	return cardData{icon: iconBattery, title: "Power", lines: lines}
 }