docs: add AI Pipeline technical specification
Create comprehensive spec for Sprint 2 Feature 2:
Content:
- System prompt with Metodo Sacchi integration (Safety First, Little Often, Double Check)
- OpenAI GPT-4o-mini configuration (cost: ~/bin/bash.0002/call)
- Complete n8n Code Node JavaScript implementation
- JSON output schema with severity mapping
- Error handling with circuit breaker pattern
- Security guidelines (data sanitization, rate limiting)
- 10 acceptance criteria defined
- 5 test scenarios with expected input/output
- 5 real-world examples (OOM, disk full, connection refused, etc.)
- Implementation checklist for developers
Key Features:
- Safe command generation (destructive commands blacklisted)
- Incremental actions (Little Often principle)
- Confirmation required for uncertain situations (Double Check)
- Fallback when OpenAI unavailable
- Response time < 5s target
- Cost-optimized with GPT-4o-mini
Next: @python-developer implements OpenAI integration in n8n workflow
Refs: workflows/logwhisperer_ingest.json (already created)
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