AIRA-41: Incident State Machine

[learn-design-develop]

👤 User Story

As the incident manager, I need a state machine for managing incident lifecycle through defined states.

🎯 Rationale

Manages lifecycle transitions: new → processing → analyzed → closed.

✅ Acceptance Criteria

• Create aira/core/state_machine.py with transition logic
• Implement transitions and guards
• Store state history in database
• Timeout handling for stuck incidents
• Correlation-ID propagation

📋 Metadata

• Status: MVP

• Category: Core Workflow

• Week: Week 4

• Complexity: Low

• Critical Path: No

• Dependencies: AIRA-16, AIRA-12

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Original Ticket: #41
Phase 1 MVP Tracking Issue