Add MOVIES_DIR to conf; remove hardcoded 'movies' subdir

All scripts now use $MOVIES_DIR instead of $BASE_DIR/movies.
Defaults to BASE_DIR/movies but can point to a separate drive.

https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ

daily_sunrise_video.sh

@@ -11,7 +11,7 @@ output_date=$(date +%Y-%m)
 image_dir="$BASE_DIR/$CAM_NAME/$current_date"
 
 # Set output directory
-output_dir="$BASE_DIR/movies/$CAM_NAME/$output_date/sunrise-only"
+output_dir="$MOVIES_DIR/$CAM_NAME/$output_date/sunrise-only"
 
 # Make sure the output directory exists
 mkdir -p "$output_dir"