Prepend built-in prompts to user prompt in unified creation step with system tags and validation#10469

Merged

pelikhan merged 12 commits into

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copilot/add-tests-for-substitutions-again

Jan 17, 2026

Commits on Jan 17, 2026

Initial plan
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Prepend built-in prompts to user prompt in single step

Copilot
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pelikhan
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Add comprehensive tests for unified prompt creation and fix existing tests

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Fix all test expectations for new unified prompt creation step

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Wrap built-in prompts in system XML tags

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pelikhan
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Add comprehensive test suite for unified prompt creation (20 tests)

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Add validation step to check placeholders are properly substituted

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pelikhan
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Add test to validate prompt validation step in generated workflows

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Fix: Include built-in prompt expressions in placeholder substitution

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Sort substitutions alphabetically for stable output

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Fix: Handle undefined/null values in placeholder substitution

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pelikhan
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Add comprehensive fuzz tests for template substitution and value states

Copilot
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pelikhan
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