add borrow_toggle_from_wtg

[aclerc]

Add borrow_toggle_from_wtg and associated logic to properly support analyses where each turbine has its own unique toggle pattern (in this case the references are always toggle off).

[Copilot]

Pull request overview

Adds a toggle.borrow_toggle_from_wtg configuration option and integrates it into the toggle-based pre/post split so that when a non-test turbine is analyzed in the “test role” (e.g., reference round-robin), it can borrow a real test turbine’s toggle pattern and avoid an empty post period.

Changes:

• Added Toggle.borrow_toggle_from_wtg (default None) plus WindUpConfig validation ensuring it references a turbine in cfg.test_wtgs.
• Updated PrePostSplitter.split() to optionally use the borrowed turbine’s toggle series when test_wtg_name is not a configured test turbine.
• Added unit tests covering the new config validation and the splitter’s borrowing behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
wind_up/models.py	Adds the new config field and a validator to restrict it to test_wtgs.
wind_up/interface.py	Implements borrowing logic in toggle-based splitting via add_toggle_signals.
tests/test_models.py	Adds validation tests for borrow_toggle_from_wtg (default/accept/reject).
tests/test_interface.py	Adds behavioral tests ensuring borrowed vs. own toggle patterns are applied correctly.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.