fix: resolve SKILL.md validation errors

skills/azure-ai-agents-persistent-java/SKILL.md

@@ -4,6 +4,8 @@ description: "|"
   Azure AI Agents Persistent SDK for Java. Low-level SDK for creating and managing AI agents with threads, messages, runs, and tools.
   Triggers: "PersistentAgentsClient", "persistent agents java", "agent threads java", "agent runs java", "streaming agents java".
 package: com.azure:azure-ai-agents-persistent
+risk: unknown
+source: community
 ---
 
 # Azure AI Agents Persistent SDK for Java
@@ -135,3 +137,6 @@ try {
 |----------|-----|
 | Maven Package | https://central.sonatype.com/artifact/com.azure/azure-ai-agents-persistent |
 | GitHub Source | https://github.com/Azure/azure-sdk-for-java/tree/main/sdk/ai/azure-ai-agents-persistent |
+
+## When to Use
+This skill is applicable to execute the workflow or actions described in the overview.