ci: Fix deploy script for POSIX sh, use explicit bash

.gitea/workflows/lint.yml

@@ -74,12 +74,11 @@ jobs:
           idf.py build
 
       - name: Deploy via OTA
+        shell: bash
         run: |
           # Sensor IPs (update if DHCP changes)
-          declare -A SENSORS
-          SENSORS["muddy-storm"]="192.168.129.29"
-          SENSORS["amber-maple"]="192.168.129.30"
-          SENSORS["hollow-acorn"]="192.168.129.31"
+          SENSOR_NAMES="muddy-storm amber-maple hollow-acorn"
+          SENSOR_IPS="192.168.129.29 192.168.129.30 192.168.129.31"
           PORT=8070
 
           # Get host IP - try multiple methods
@@ -96,8 +95,10 @@ jobs:
           sleep 2
 
           # Deploy to each sensor
-          for sensor in "${!SENSORS[@]}"; do
-            SENSOR_IP="${SENSORS[$sensor]}"
+          set -- $SENSOR_IPS
+          for sensor in $SENSOR_NAMES; do
+            SENSOR_IP="$1"
+            shift
             echo "=== Deploying to $sensor ($SENSOR_IP) ==="
 
             # Send OTA command via UDP