chore: prune completed unified-eval-schema docs

[CybotTM]

Summary

Delete 2 dated docs whose implementation shipped:

• docs/superpowers/plans/2026-04-16-unified-eval-schema.md
• docs/superpowers/specs/2026-04-16-unified-eval-schema-design.md

skills/github-release/evals/evals.json contains both expectations (37) and assertions (37) per the unified schema, and validate-evals.sh accepts the new format. Git history preserves the docs.

Test plan

• Verified evals.json contains both expectations and assertions fields
• No remaining references to the deleted files outside their own contents

[gemini-code-assist]

Code Review

This pull request deletes the unified eval schema design specification and implementation plan. The reviewer recommends retaining these documents or moving the included conversion script to a shared directory, as the migration is still ongoing across other repositories and the information remains a critical reference.

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docs/superpowers/specs/2026-04-16-unified-eval-schema-design.md (1)

This design specification defines the Unified Schema and validation rules intended for adoption across approximately 37 repositories. The Migration Path (lines 135-154) indicates that for most repositories, this is a Gradual process. Deleting this document while the migration is still ongoing for other repositories removes a critical reference for maintainers.\n\nIt is recommended to retain this specification until the migration is complete or until its contents are fully integrated into a permanent, non-dated documentation location (e.g., the skill-repo SKILL.md as suggested on line 141).

docs/superpowers/plans/2026-04-16-unified-eval-schema.md (341-404)

This implementation plan contains a reusable Python conversion script (lines 341-404) designed to migrate legacy evals to the unified format. As the migration is still Gradual for other repositories (as noted in the associated design spec), this script remains highly relevant. Deleting it now may lead to duplicated effort across the organization.\n\nConsider moving the script to a shared utility directory (e.g., skills/skill-repo/scripts/convert-evals.py) before removing this plan.

[Copilot]

Pull request overview

Removes two dated “unified eval schema” planning/specification documents from docs/superpowers/ now that the unified schema work has shipped and the repository no longer references those docs.

Changes:

• Delete the unified eval schema design spec doc (docs/superpowers/specs/2026-04-16-unified-eval-schema-design.md).
• Delete the unified eval schema implementation plan doc (docs/superpowers/plans/2026-04-16-unified-eval-schema.md).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
docs/superpowers/specs/2026-04-16-unified-eval-schema-design.md	Removes an approved design/spec document that is now historical.
docs/superpowers/plans/2026-04-16-unified-eval-schema.md	Removes an implementation plan document whose steps are now completed.

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