Add micro chassis layout for ZimaBoard and similar SBCs

- Implement generate_micro_layout() for single board computers
- Shows onboard eMMC storage if present
- Shows 2 rear SATA ports
- Add monitor-02 entry (ZimaBoard 832)

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

driveAtlas.sh

@@ -55,6 +55,36 @@ generate_10bay_layout() {
     printf "└────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘\n"
 }
 
+generate_micro_layout() {
+    local hostname=$1
+    build_drive_map
+
+    # Check for eMMC storage
+    local emmc_device=""
+    if [[ -b /dev/mmcblk0 ]]; then
+        emmc_device="mmcblk0"
+    fi
+
+    printf "┌─────────────────────────────────────────────────────────────┐\n"
+    printf "│  %-57s  │\n" "$hostname - Micro SBC"
+    printf "│                                                             │\n"
+
+    # Show eMMC if present
+    if [[ -n "$emmc_device" ]]; then
+        local emmc_size=$(lsblk -d -n -o SIZE "/dev/$emmc_device" 2>/dev/null | xargs)
+        printf "│    ┌─────────────────────────────────────────────────────┐ │\n"
+        printf "│    │  Onboard eMMC: %-10s (%s)                  │ │\n" "$emmc_device" "$emmc_size"
+        printf "│    └─────────────────────────────────────────────────────┘ │\n"
+        printf "│                                                             │\n"
+    fi
+
+    printf "│    SATA Ports (rear):                                       │\n"
+    printf "│    ┌──────────────┐  ┌──────────────┐                        │\n"
+    printf "│    │ 1: %-9s │  │ 2: %-9s │                        │\n" "${DRIVE_MAP[1]:-EMPTY}" "${DRIVE_MAP[2]:-EMPTY}"
+    printf "│    └──────────────┘  └──────────────┘                        │\n"
+    printf "└─────────────────────────────────────────────────────────────┘\n"
+}
+
 generate_large1_layout() {
     build_drive_map
 
@@ -146,6 +176,14 @@ declare -A SERVER_MAPPINGS=(
     # TODO: Map actual PCI paths after running diagnose-drives.sh
     ["large1"]="
     "
+
+    # monitor-02
+    # ZimaBoard 832 - Single board computer
+    # 2 SATA ports on rear (currently unused)
+    # Boot from onboard eMMC (mmcblk0)
+    # SATA controller would be at a specific PCI address when drives connected
+    ["monitor-02"]="
+    "
 )
 
 declare -A CHASSIS_TYPES=(
@@ -213,7 +251,7 @@ case "$CHASSIS_TYPE" in
         generate_large1_layout
         ;;
     "micro")
-        echo "Micro server layout not yet implemented"
+        generate_micro_layout "$HOSTNAME"
         ;;
     *)
         echo "┌─────────────────────────────────────────────────────────┐"