fix(new-design): Changed design name acceptable characters

scripts/add-software.mjs

@@ -85,7 +85,7 @@ async function addDesign() {
   const { name } = await prompts({
     type: 'text',
     name: 'name',
-    message: 'What name would you like the design to have? ([a-z] only)',
+    message: 'What name would you like the design to have? ([a-z0-9_-] only)',
     validate: validateDesignName,
   })
 
@@ -223,8 +223,9 @@ function validateDesignName(name) {
   )
     return `Sorry but ${name} is already taken so you'll need to pick something else`
 
-  if (/^([a-z]+)$/.test(name)) return true
-  else return ' 🙈 Please use only [a-z], no spaces, no capitals, no nothing 🤷'
+  if (/^([a-z0-9][a-z0-9_\-]*)$/.test(name)) return true
+  else
+    return ' 🙈 Please use only lowercase letters, digits, underscores, and hyphens. Names must start with a lowercase letter or digit. 🤷'
 }
 
 function validatePluginName(name) {