chore: initialize taskplane tasks

taskplane-tasks/CONTEXT.md

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+# General — Context
+
+**Last Updated:** 2026-04-08
+**Status:** Active
+**Next Task ID:** TP-002
+
+---
+
+## Current State
+
+This is the default task area for nixos-config. Tasks that don't belong
+to a specific domain area are created here.
+
+Taskplane is configured and ready for task execution. Use `/task` for single
+tasks or `/orch all` for parallel batch execution.
+
+---
+
+## Key Files
+
+| Category | Path |
+|----------|------|
+| Tasks | `taskplane-tasks/` |
+| Config | `.pi/task-runner.yaml` |
+| Config | `.pi/task-orchestrator.yaml` |
+
+---
+
+## Technical Debt / Future Work
+
+_Items discovered during task execution are logged here by agents._