✨ feat: add commit_message and bdd_testing skills

- Create commit_message skill with Gitmoji validation and templates
- Update bdd_testing skill to match validated BDD implementation
- Add comprehensive documentation and validation scripts
- Ensure all skills follow AGENTS.md conventions

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

.vibe/skills/commit_message/assets/commit-template.txt

@@ -0,0 +1,25 @@
+# Commit Message Template
+
+# Type: Choose one gitmoji from the reference
+# ✨ :sparkles: feat - New feature
+# 🐛 :bug: fix - Bug fix
+# 📝 :memo: docs - Documentation
+# ♻️ :recycle: refactor - Code refactoring
+# 🧪 :test_tube: test - Tests
+# 🔧 :wrench: chore - Configuration
+
+# Format: <gitmoji> <type>: <description>
+# Example: ✨ feat: implement BDD testing framework
+
+# First line (50 chars max):
+
+# Body (optional - explain what and why, not how):
+# - Change 1
+# - Change 2
+# - Change 3
+
+# Footer (optional - references, breaking changes):
+# Resolves: #<issue>
+# Breaking: <description>
+# Generated by Mistral Vibe.
+# Co-Authored-By: Mistral Vibe <vibe@mistral.ai>