diff --git a/first_time_install.sh b/first_time_install.sh
index 4b9ac4a6..2c46ed7f 100644
--- a/first_time_install.sh
+++ b/first_time_install.sh
@@ -1475,7 +1475,7 @@ echo "WiFi Connection Status:"
 if command -v nmcli >/dev/null 2>&1; then
     WIFI_STATUS=$(nmcli -t -f DEVICE,TYPE,STATE device status 2>/dev/null | grep -i wifi || echo "")
     if [ -n "$WIFI_STATUS" ]; then
-        echo "$WIFI_STATUS" | while IFS=':' read -r _ type state; do
+        echo "$WIFI_STATUS" | while IFS=':' read -r _ _ state; do
             if [ "$state" = "connected" ]; then
                 SSID=$(nmcli -t -f active,ssid device wifi 2>/dev/null | grep "^yes:" | cut -d: -f2 | head -1)
                 if [ -n "$SSID" ]; then
diff --git a/scripts/dev/test_pillow_compat.py b/scripts/dev/test_pillow_compat.py
index ce0dfdd6..590d632c 100755
--- a/scripts/dev/test_pillow_compat.py
+++ b/scripts/dev/test_pillow_compat.py
@@ -23,7 +23,7 @@ def check(label, fn):
 
 
 def main():
-    from PIL import Image, ImageDraw, ImageFont, ImageFilter
+    from PIL import Image, ImageDraw, ImageFont
     import PIL
 
     print(f"Pillow {PIL.__version__} on Python {sys.version.split()[0]}\n")
diff --git a/web_interface/app.py b/web_interface/app.py
index 393fef17..57286300 100644
--- a/web_interface/app.py
+++ b/web_interface/app.py
@@ -742,4 +742,4 @@ if __name__ == '__main__':
     # long-lived /api/v3/stream/* SSE connections don't starve other requests.
     # Debug mode is off by default; opt in with FLASK_DEBUG=1 in the environment.
     _debug = _os.environ.get('FLASK_DEBUG', '0') == '1'
-    app.run(host='0.0.0.0', port=5000, debug=_debug, threaded=True)
+    app.run(host='0.0.0.0', port=5000, debug=_debug, threaded=True)  # nosec B104 - intentional; local network device
diff --git a/web_interface/static/v3/app.js b/web_interface/static/v3/app.js
index 4fe1ed46..56b8c985 100644
--- a/web_interface/static/v3/app.js
+++ b/web_interface/static/v3/app.js
@@ -1,4 +1,4 @@
-/* global showNotification */
+/* global showNotification, updateSystemStats */
 // LED Matrix v3 JavaScript
 // Additional helpers for HTMX and Alpine.js integration