fix: resolve SKILL.md validation errors

skills/linux-shell-scripting/SKILL.md

@@ -1,9 +1,11 @@
 ---
 name: linux-shell-scripting
-description: "This skill should be used when the user asks to \"create bash scripts\", \"automate Linux tasks\", \"monitor system resources\", \"backup files\", \"manage users\", or \"write production shell scripts\". It pr..."
+description: "This skill should be used when the user asks to \"create bash scripts\", \"automate Linux tasks\", \"monitor system resources\", \"backup files\", \"manage users\", or \"write production she..."
 metadata:
   author: zebbern
   version: "1.1"
+risk: unknown
+source: community
 ---
 
 # Linux Production Shell Scripts
@@ -502,3 +504,6 @@ Minute(0-59) Hour(0-23) Day(1-31) Month(1-12) Weekday(0-7, 0/7=Sun)
 - Quote variables to handle spaces properly
 - Many scripts require root/sudo privileges
 - Use `bash -x script.sh` for debugging
+
+## When to Use
+This skill is applicable to execute the workflow or actions described in the overview.