simplify the driver interface

app/proc/drivers/sys.go

@@ -11,11 +11,30 @@ import (
 
 type SysDriver struct{}
 
-func NewSysDriver() *SysDriver {
-	return &SysDriver{}
+func NewSysDriver() (*SysDriver, error) {
+	r := SysDriver{}
+	_, err := r.Read()
+	return &r, err
 }
 
-func (r *SysDriver) ReadClockSensors() ([]ClockSensor, error) {
+func (r *SysDriver) Render(console *strings.Builder) error {
+	fmt.Fprint(console, "--- Clock Frequency ---\n")
+	c, err := r.Read()
+	if err != nil {
+		return err
+	}
+
+	clock := c.([]ClockSensor)
+
+	for _, sensor := range clock {
+		// \033[K clears from cursor to end of line (prevents lingering chars)
+		fmt.Fprintf(console, "%-16s | %.2f GHz\033[K\n", sensor.Name, sensor.FrequencyGHz)
+	}
+
+	return nil
+}
+
+func (r *SysDriver) Read() (any, error) {
 	// Glob directly targets scaling_cur_freq for all numerical CPU core paths
 	freqFiles, err := filepath.Glob("/sys/devices/system/cpu/cpu[0-9]*/cpufreq/scaling_cur_freq")
 	if err != nil {