A few updates, cleanup updated weather module.

modules/roll/roll.sh

@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 [ -f functions.sh ] && source functions.sh
 
 roll_dice() {
@@ -30,8 +31,32 @@ roll_dice() {
 }
 
 rollString="${3##* }"
-if ! [[ "$rollString" =~ ^[1-9][0-9]*[dD][1-9][0-9]*$ ]]; then
-    msg "$2" "${1}: Usage is roll #d# where # is greater than 0."
-    else
-    msg "$2" "$(roll_dice ${rollString})"
+
+# Validate roll string is provided
+if [[ -z "$rollString" ]]; then
+    msg "$2" "${1}: Usage is roll #d# (e.g., 2d6, 1d20)"
+    exit 0
 fi
+
+# Validate roll string format
+if ! [[ "$rollString" =~ ^[1-9][0-9]*[dD][1-9][0-9]*$ ]]; then
+    msg "$2" "${1}: Invalid format. Usage: roll #d# where # is greater than 0 (e.g., 2d6, 1d20)"
+    exit 0
+fi
+
+# Extract count and sides for validation
+count=${rollString%[dD]*}
+sides=${rollString#*[dD]}
+
+# Validate reasonable limits to prevent abuse
+if [[ $count -gt 1000 ]]; then
+    msg "$2" "${1}: Maximum 1000 dice per roll."
+    exit 0
+fi
+
+if [[ $sides -gt 1000 ]]; then
+    msg "$2" "${1}: Maximum 1000 sides per die."
+    exit 0
+fi
+
+msg "$2" "$(roll_dice ${rollString})"