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

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+---
+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

hooks/session-logger/hooks.json

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+{
+  "version": 1,
+  "hooks": {
+    "sessionStart": [
+      {
+        "type": "command",
+        "bash": ".github/hooks/session-logger/log-session-start.sh",
+        "cwd": ".",
+        "timeoutSec": 5
+      }
+    ],
+    "sessionEnd": [
+      {
+        "type": "command",
+        "bash": ".github/hooks/session-logger/log-session-end.sh",
+        "cwd": ".",
+        "timeoutSec": 5
+      }
+    ],
+    "userPromptSubmitted": [
+      {
+        "type": "command",
+        "bash": ".github/hooks/session-logger/log-prompt.sh",
+        "cwd": ".",
+        "env": {
+          "LOG_LEVEL": "INFO"
+        },
+        "timeoutSec": 5
+      }
+    ]
+  }
+}

hooks/session-logger/log-prompt.sh

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+#!/bin/bash
+
+# Log user prompt submission
+
+set -euo pipefail
+
+# Skip if logging disabled
+if [[ "${SKIP_LOGGING:-}" == "true" ]]; then
+  exit 0
+fi
+
+# Read input from Copilot (contains prompt info)
+INPUT=$(cat)
+
+# Create logs directory if it doesn't exist
+mkdir -p logs/copilot
+
+# Extract timestamp
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Log prompt (you can parse INPUT for more details)
+echo "{\"timestamp\":\"$TIMESTAMP\",\"event\":\"userPromptSubmitted\",\"level\":\"${LOG_LEVEL:-INFO}\"}" >> logs/copilot/prompts.log
+
+exit 0

hooks/session-logger/log-session-end.sh

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+#!/bin/bash
+
+# Log session end event
+
+set -euo pipefail
+
+# Skip if logging disabled
+if [[ "${SKIP_LOGGING:-}" == "true" ]]; then
+  exit 0
+fi
+
+# Read input from Copilot
+INPUT=$(cat)
+
+# Create logs directory if it doesn't exist
+mkdir -p logs/copilot
+
+# Extract timestamp
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Log session end
+echo "{\"timestamp\":\"$TIMESTAMP\",\"event\":\"sessionEnd\"}" >> logs/copilot/session.log
+
+echo "📝 Session end logged"
+exit 0

hooks/session-logger/log-session-start.sh

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+#!/bin/bash
+
+# Log session start event
+
+set -euo pipefail
+
+# Skip if logging disabled
+if [[ "${SKIP_LOGGING:-}" == "true" ]]; then
+  exit 0
+fi
+
+# Read input from Copilot
+INPUT=$(cat)
+
+# Create logs directory if it doesn't exist
+mkdir -p logs/copilot
+
+# Extract timestamp and session info
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+CWD=$(pwd)
+
+# Log session start
+echo "{\"timestamp\":\"$TIMESTAMP\",\"event\":\"sessionStart\",\"cwd\":\"$CWD\"}" >> logs/copilot/session.log
+
+echo "📝 Session logged"
+exit 0