Add rp1_adc to CPU chip detection in sensors parser

The host-agent's isCPUChip function was missing rp1_adc (Raspberry Pi RP1 ADC),
which is already detected in the monitoring package. This sync ensures consistent
CPU temperature chip detection across both code paths.

internal/sensors/parser.go

@@ -95,7 +95,7 @@ func isCPUChip(chipLower string) bool {
 		"it87", "nct6687", "nct6775", "nct6776", "nct6779",
 		"nct6791", "nct6792", "nct6793", "nct6795", "nct6796",
 		"nct6797", "nct6798", "w83627", "f71882",
-		"cpu_thermal", "rpitemp",
+		"cpu_thermal", "rp1_adc", "rpitemp",
 	}
 
 	for _, chip := range cpuChips {

internal/sensors/parser_test.go

@@ -344,6 +344,7 @@ func TestIsCPUChip(t *testing.T) {
 		{"nct6775-isa-0290", true},
 		{"cpu_thermal-virtual-0", true},
 		{"acpitz-acpi-0", true},
+		{"rp1_adc-isa-0000", true}, // Raspberry Pi RP1 ADC
 		{"nvme-pci-0100", false},
 		{"amdgpu-pci-0300", false},
 		{"unknown-chip", false},