🔧 chore: add nested path validation to skill-creator

- Added path validation to prevent .vibe/.vibe nested directory creation
- Enhanced BEST_PRACTICES.md with path handling patterns
- Added troubleshooting section to ADVANCED_FEATURES.md
- Shows actual creation path for transparency

Fixes: Issue with skills being created in incorrect nested paths
Refs: #skill-creation, #path-validation

.vibe/skills/skill-creator/scripts/create_skill.sh

@@ -19,6 +19,17 @@ SKILL_NAME_HYPHENATED=$(echo "$SKILL_NAME" | tr '_' '-')
 # Create skill directory
 mkdir -p "$SKILL_DIR"
 
+# Validate path - ensure we're not creating nested .vibe directories
+if [[ "$SKILL_DIR" == *".vibe/.vibe"* ]]; then
+    echo "❌ Error: Detected nested .vibe path: $SKILL_DIR"
+    echo "This usually happens when running the script from within .vibe/skills/"
+    echo "Please run from project root or use absolute paths"
+    exit 1
+fi
+
+# Show the actual path being created
+echo "✓ Creating skill in: $(pwd)/$SKILL_DIR"
+
 # Create SKILL.md with basic template
 cat > "$SKILL_DIR/SKILL.md" <<EOL
 ---