Observability guides ready for review

Rough drafts (ready for detailed feedback):
- Framework (5-phase model)
- Instrumentation (INSTRUMENT phase)
- Testing strategies (TEST phase)
- Extraction patterns (EXTRACT phase)

Skeleton drafts (structure/scope review):
- Monitoring (MONITOR phase)
- Optimization workflows (OPTIMIZE phase)
- Production readiness (checklist)

VAPI validation markers highlight areas needing guidance.