feat: add hooks functionality with automated workflows

- Introduced hooks to enable automated workflows triggered by specific events during GitHub Copilot sessions.
- Added documentation for hooks in AGENTS.md and README.md.
- Created a new directory structure for hooks, including README.md and hooks.json files.
- Implemented two example hooks: Session Auto-Commit and Session Logger.
- Developed scripts for logging session events and auto-committing changes.
- Enhanced validation and parsing for hook metadata.
- Updated build and validation scripts to accommodate new hooks functionality.

hooks/session-logger/README.md

@@ -0,0 +1,64 @@
+---
+name: 'Session Logger'
+description: 'Logs all Copilot coding agent session activity for audit and analysis'
+tags: ['logging', 'audit', 'analytics']
+---
+
+# Session Logger Hook
+
+Comprehensive logging for GitHub Copilot coding agent sessions, tracking session starts, ends, and user prompts for audit trails and usage analytics.
+
+## Overview
+
+This hook provides detailed logging of Copilot coding agent activity:
+- Session start/end times
+- User prompts and questions
+- Session duration
+- Working directory context
+
+## Features
+
+- **Complete Audit Trail**: Track all Copilot interactions
+- **Structured Logging**: JSON format for easy parsing
+- **Searchable History**: Review past sessions and prompts
+- **Analytics Ready**: Export data for usage analysis
+- **Privacy Aware**: Configurable to exclude sensitive data
+
+## Installation
+
+1. Copy this hook folder to your repository's `.github/hooks/` directory:
+   ```bash
+   cp -r hooks/session-logger .github/hooks/
+   ```
+
+2. Create the logs directory:
+   ```bash
+   mkdir -p logs/copilot
+   ```
+
+3. Ensure scripts are executable:
+   ```bash
+   chmod +x .github/hooks/session-logger/*.sh
+   ```
+
+4. Commit the hook configuration to your repository's default branch
+
+## Log Format
+
+Logs are written to `logs/copilot/session.log` in JSON format:
+
+```json
+{
+  "timestamp": "2024-01-15T10:30:00Z",
+  "event": "sessionStart",
+  "sessionId": "abc123",
+  "cwd": "/workspace/project"
+}
+```
+
+## Privacy & Security
+
+- Add `logs/` to `.gitignore` to avoid committing session data
+- Use `LOG_LEVEL=ERROR` to only log errors
+- Set `SKIP_LOGGING=true` environment variable to disable
+- Logs are stored locally only