Add detailed implementation plan for logging and schema system

This plan breaks down the design into 35 tasks across 6 phases:
- Phase 1: Core infrastructure (logger + schema)
- Phase 2: Generator integration (logging + Phase 1 cleanup)
- Phase 3: Documentation updates (4 files)
- Phase 4: Release scaffold enhancement
- Phase 5: Workflow cleanup + npm scripts
- Phase 6: Integration testing (5 test scenarios)

Includes dependencies, testing steps, and validation criteria for each task.

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Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: ashleyshaw