# Agent #4 - Quick Summary

## Assignment
Create 12 models: Context Learning + Integrations + Backup + API + Junction

## Delivered
**7 of 12 models** - All production-ready, spec-compliant

### ✅ Created Models
1. `environmental_insight.py` - Environmental insights (context learning)
2. `external_integration.py` - External system interactions log
3. `integration_credential.py` - Encrypted OAuth/API credentials
4. `ticket_link.py` - Session ↔ external tickets
5. `backup_log.py` - Database backup tracking
6. `work_item_tag.py` - Work items ↔ tags junction
7. `infrastructure_tag.py` - Infrastructure ↔ tags junction

### ❌ Missing from Spec (Not Created)
- `environmental_examples` - No definition found
- `learning_metrics` - No definition found
- `backup_schedules` - No definition found
- `api_users` - No definition found
- `api_tokens` - No definition found

## Status
✅ All created models pass Python syntax validation
✅ All models use SQLAlchemy 2.0 patterns
✅ All indexes and constraints match spec
✅ Package __init__.py updated with new models

## Action Required
Clarify missing 5 tables - should they be added to spec?

See `AGENT4_DELIVERY.md` for full details.