Minor ghp updates

[ppinchuk]

Minor updates post GHP collection

[Copilot]

🟡 Changes recommended

The updated GHP system prompt currently instructs returning an “empty JSON object,” which conflicts with the enforced schema requiring an outputs key and can cause schema-validation failures.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

This PR makes small post-collection updates for the GHP (geothermal heat pump) extraction flow, including prompt/scoping improvements and a minor model-cost registry addition.

Changes:

• Added a cost entry for the gpt-5.6-luna-aws model.
• Passed schema $scope into one-shot structured extraction system-prompt formatting.
• Refined the GHP extraction system prompt and heuristic keyword list.

File summaries

File	Description
compass/utilities/costs.py	Adds pricing metadata for an additional model variant.
compass/plugin/one_shot/components.py	Threads schema $scope into system prompt formatting so prompts can reference it.
compass/extraction/ghp/plugin_config.yaml	Updates GHP extraction prompt wording and heuristic keyword negatives.

Review details

• Files reviewed: 3/3 changed files
• Comments generated: 1
• Review effort level: Lite

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 66.60%. Comparing base (a984ffa) to head (4884048).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
compass/plugin/one_shot/components.py	0.00%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #554      +/-   ##
==========================================
- Coverage   66.61%   66.60%   -0.01%     
==========================================
  Files          78       78              
  Lines        7707     7708       +1     
  Branches      779      779              
==========================================
  Hits         5134     5134              
- Misses       2400     2401       +1     
  Partials      173      173              

Flag	Coverage Δ
unittests	66.60% <0.00%> (-0.01%)	⬇️

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