bugfix: ensure functions are loaded before internal cli calls

src/main.sh

@@ -2,21 +2,24 @@
 
 set -eu
 
-if [ ! "${SCRIPT_LOADED:-}" ]; then
+# Always load functions
 # Helper functions
 . "sh/helper.sh"
-  # Read theme
-  . "sh/theme.sh"
-  # Read configuration
-  . "sh/config.sh"
-  # Load awk scripts
-  . "sh/awkscripts.sh"
 # iCalendar routines
 . "sh/icalendar.sh"
 # Attachment handling
 . "sh/attachment.sh"
 # Categories handling
 . "sh/categories.sh"
+
+# Load environment variables only when not yet loaded
+if [ ! "${SCRIPT_LOADED:-}" ]; then
+  # Read configuration
+  . "sh/config.sh"
+  # Read theme
+  . "sh/theme.sh"
+  # Load awk scripts
+  . "sh/awkscripts.sh"
   # Mark as loaded
   export SCRIPT_LOADED=1
 fi