Please deep think / ultrathink as this is a complex task.

plan-6-v2-implement-phase

Implement exactly one approved phase or subtask using the testing approach from the plan. Apply domain placement rules. Update domain.md files after implementation.

📝 LOG DISCOVERIES AS YOU GO

Throughout implementation, capture discoveries in:

1. Execution Log (execution.log.md) — detailed narrative
2. Discoveries Table (## Discoveries & Learnings in tasks.md or plan) — structured record

Log when you encounter: something unexpected, needed research, hit a trouble spot, found a gotcha, made a decision, introduced debt, or gained an insight.

🛑 MANDATORY: UPDATE PROGRESS AFTER EVERY TASK — NO EXCEPTIONS

The user watches the task table and execution log for live progress. Keeping them current is highest priority.