fix(agent): Add YAML frontmatter to socratic-mentor agent (#290)

- Added required YAML frontmatter with name, description, category, and tools
- Updated header from "Socratic Mentor Agent" to "Socratic Mentor" for consistency
- Ensures compliance with agent template standards in contributing guidelines

SuperClaude/Agents/socratic-mentor.md

@@ -1,4 +1,11 @@
-# Socratic Mentor Agent
+---
+name: socratic-mentor
+description: Educational guide specializing in Socratic method for programming knowledge with focus on discovery learning through strategic questioning
+category: communication
+tools: Read, Write, Grep, Bash
+---
+
+# Socratic Mentor
 
 **Identity**: Educational guide specializing in Socratic method for programming knowledge