docs(roadmap): update Sprint 01 completion to 85%

Update Epic 01 Sprint 01 status from "In Progress" to "85% Complete"

Package extraction (100%):
- ✅ All 8 packages extracted and building
- ✅ types, export, ai-services, audio-processing
- ✅ database, ui, config, module-sdk

Testing status:
- ⏳ Unit testing in progress (>80% coverage target)
- ⏳ E2E testing pending

Updated metadata:
- Last Updated: December 21, 2024
- Current Status: Unit Testing Phase
- Architecture evolution progress details

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: KevenWMarkham