Implement selective checks with --checks option

Add the ability to run only specific diagnostic checks using
--checks=cpu,ram,disk syntax. This allows users to perform
targeted diagnostics without running the full suite.

Supported checks: cpu, ram, memory, storage, disk, network,
hardware, temps, services, ceph, vms, containers

#13

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

proxDoc.sh

@@ -475,13 +475,49 @@ get_hwmon_status() {
     fi
 }
 
+# Valid check names for selective mode
+readonly VALID_CHECKS="cpu ram memory storage disk network hardware temps services ceph vms containers"
+
 run_selective_checks() {
     local checks="$1"
     if [[ -z "$checks" ]]; then
         log_message error "No checks specified. Use --checks=cpu,ram,disk"
+        echo "Valid checks: $VALID_CHECKS"
         exit 1
     fi
-    log_message info "Selective checks not yet implemented"
+
+    # Validate check names
+    IFS=',' read -ra check_array <<< "$checks"
+    for check in "${check_array[@]}"; do
+        if [[ ! " $VALID_CHECKS " =~ " $check " ]]; then
+            log_message error "Unknown check: $check"
+            echo "Valid checks: $VALID_CHECKS"
+            exit 1
+        fi
+    done
+
+    log_message info "Running selective checks: $checks"
+    echo ""
+
+    for check in "${check_array[@]}"; do
+        case "$check" in
+            cpu)        log_message info "Checking CPU..."; get_cpu_info ;;
+            ram)        log_message info "Checking RAM..."; get_ram_info ;;
+            memory)     log_message info "Checking memory details..."; get_memory_details ;;
+            storage)    log_message info "Checking storage..."; get_storage_info ;;
+            disk)       log_message info "Checking disk health..."; get_disk_health ;;
+            network)    log_message info "Checking network..."; get_network_info; get_detailed_network; get_nic_details ;;
+            hardware)   log_message info "Checking hardware..."; get_hardware_info; get_motherboard_info; get_hba_info ;;
+            temps)      log_message info "Checking temperatures..."; get_temp_info ;;
+            services)   log_message info "Checking services..."; check_services ;;
+            ceph)       log_message info "Checking Ceph..."; get_ceph_health ;;
+            vms)        log_message info "Checking VMs..."; list_vms ;;
+            containers) log_message info "Checking containers..."; list_containers ;;
+        esac
+    done
+
+    echo ""
+    log_message info "Selective checks complete"
 }
 
 quick_health_check() {
@@ -596,6 +632,10 @@ help() {
     echo "  --backup         Review backup health"
     echo "  --checks=LIST    Run only specific checks (comma-separated)"
     echo ""
+    echo "Valid checks for --checks option:"
+    echo "  cpu, ram, memory, storage, disk, network, hardware, temps,"
+    echo "  services, ceph, vms, containers"
+    echo ""
     echo "Examples:"
     echo "  Run full diagnostics:"
     echo "    curl -sL \"http://10.10.10.63:3000/LotusGuild/proxDoc/raw/branch/main/proxDoc.sh\" | bash -s -- --diags"
@@ -612,6 +652,9 @@ help() {
     echo ""
     echo "  Check Ceph cluster health:"
     echo "    curl -sL \"http://10.10.10.63:3000/LotusGuild/proxDoc/raw/branch/main/proxDoc.sh\" | bash -s -- --ceph"
+    echo ""
+    echo "  Run only CPU and RAM checks:"
+    echo "    curl -sL \"http://10.10.10.63:3000/LotusGuild/proxDoc/raw/branch/main/proxDoc.sh\" | bash -s -- --checks=cpu,ram"
     exit 0
 }