✨ 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

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+# 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>

.vibe/skills/commit_message/assets/gitmoji-cheatsheet.md

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+# Gitmoji Cheatsheet
+
+## Quick Reference
+
+### Most Common
+- ✨ `:sparkles:` - New feature
+- 🐛 `:bug:` - Bug fix  
+- 📝 `:memo:` - Documentation
+- ♻️ `:recycle:` - Refactoring
+- 🧪 `:test_tube:` - Tests
+- 🔧 `:wrench:` - Configuration
+
+### All Gitmoji
+
+| Emoji | Code | Type | Description |
+|-------|------|------|-------------|
+| ✨ | `:sparkles:` | feat | New feature |
+| 🐛 | `:bug:` | fix | Bug fix |
+| 📝 | `:memo:` | docs | Documentation |
+| 🎨 | `:art:` | style | Code formatting |
+| 🔧 | `:wrench:` | chore | Build/config changes |
+| ♻️ | `:recycle:` | refactor | Code refactoring |
+| 🚀 | `:rocket:` | perf | Performance improvements |
+| 🔒 | `:lock:` | security | Security fixes |
+| 📦 | `:package:` | dependencies | Dependency changes |
+| 🔥 | `:fire:` | remove | Remove code/files |
+| 🐧 | `:penguin:` | linux | Linux-specific changes |
+| 🍎 | `:apple:` | macos | macOS-specific changes |
+| 🪟 | `:window:` | windows | Windows-specific changes |
+| 🤖 | `:robot:` | ci | CI/CD changes |
+| 🧪 | `:test_tube:` | test | Tests |
+| 📈 | `:chart_with_upwards_trend:` | analytics | Analytics/SEO |
+| 🌐 | `:globe_with_meridians:` | i18n | Internationalization |
+| ⚡ | `:zap:` | performance | Performance improvements |
+
+## Usage Tips
+
+1. **Keep it simple**: Use the most specific gitmoji that fits
+2. **Be consistent**: Use the same gitmoji for similar changes
+3. **First line only**: Gitmoji goes in the first line of commit message
+4. **One gitmoji per commit**: Focus on the primary change type