Task Decomposition: Observability Stack Migration

Decompose observability stack migration into implementation phases.

Current Stack:
{{current_observability}}

Target Stack:
{{target_observability}}

Migration Constraints:
{{migration_requirements}}

Decompose into phases:

Phase 1 - Foundation:
- List dual-write implementation tasks
- Define data format mapping tasks
- Document validation tasks

Phase 2 - Migration:
- List dashboard recreation tasks
- Define alert migration tasks
- Document runbook update tasks

Phase 3 - Cutover:
- List traffic switching tasks
- Define rollback preparation tasks
- Document verification tasks

Phase 4 - Cleanup:
- List legacy decommission tasks
- Define documentation update tasks

Create timeline with dependencies and risk mitigation.