Rename top-level azsdk-evals folder to evals

[helen229]

Summary

Renames the top-level azsdk-evals directory introduced by #16367 to the simpler evals name, following review discussion that evals are a first-class repository-wide test category.

• Renames the suite root from azsdk-evals/ to evals/.
• Flattens the inner layout from evals/evals/... to evals/tools/ and evals/workflows/{mock,live}/.
• Updates Vally configuration, workflow/live pipeline globs, relative fixture and skill paths, tests, documentation, and source references.
• Updates the relative-link allowlist and fixture invariant test for the new root.

Validation

• npm test in eng/common/scripts/eval: 42/42 passed.
• CI matrix discovery against the flattened root found the expected 7 shards.
• Git-fixture discovery found the expected azure-rest-api-specs fixture at the canonical cache location.
• No tracked references to the former Vally project, evals/evals, or workflow-scenarios paths remain.
• git diff --check passed.

Follow-up to #16367.

[azure-pipelines]

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[Copilot]

Pull request overview

This pull request renames the repository-root Vally evaluation suite directory from azsdk-evals/ to evals/, treating evals as a first-class, repo-wide test category. It updates documentation and engineering-system wiring so CI and link-checking continue to discover and run the suite from the new location.

Changes:

• Renamed the top-level eval suite directory to evals/ and updated references in documentation.
• Updated CI/live pipeline path triggers and vallyRoot to point at evals.
• Updated relative-link allowlist and the fixture invariant test to use the new root.

Reviewed changes

Copilot reviewed 5 out of 31 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
evals/README.md	Updates suite documentation to reflect the new evals/ root.
evals/fixtures/README.md	Adds/updates fixture usage documentation under the renamed root.
evals/fixtures/Microsoft.Widget/Widget/tspconfig.yaml	Fixture file moved under evals/fixtures as part of the rename.
evals/fixtures/Microsoft.Widget/Widget/main.tsp	Fixture file moved under evals/fixtures as part of the rename.
evals/fixtures/Microsoft.Widget/Widget/employee.tsp	Fixture file moved under evals/fixtures as part of the rename.
evals/fixtures/analyze-pipeline/QueueClientOptionsTests/code/QueueClientOptionsTests.cs	Pipeline-analysis fixture moved under evals/fixtures as part of the rename.
evals/fixtures/analyze-pipeline/QueueClientOptionsTests/code/QueueClientOptions.cs	Pipeline-analysis fixture moved under evals/fixtures as part of the rename.
evals/evals/workflow-scenarios/mock/typespec-generation-step02.eval.yaml	Mock workflow scenario eval moved/updated under the new root.
evals/evals/workflow-scenarios/mock/rename-client-property.eval.yaml	Mock workflow scenario eval moved/updated under the new root.
evals/evals/workflow-scenarios/mock/release-planner-workflows.eval.yaml	Mock release-planner scenario suite moved/updated under the new root.
evals/evals/workflow-scenarios/mock/multi-turn-release-workflows.eval.yaml	Mock multi-turn scenario suite moved/updated under the new root.
evals/evals/workflow-scenarios/mock/fix-pipeline.eval.yaml	Mock pipeline-fix scenario moved/updated under the new root.
evals/evals/workflow-scenarios/mock/check-public-repo-then-validate.eval.yaml	Mock TypeSpec workflow scenario moved/updated under the new root.
evals/evals/workflow-scenarios/mock/analyze-failed-pipeline.eval.yaml	Mock pipeline-analysis scenario moved/updated under the new root.
evals/evals/workflow-scenarios/live/release-planner.eval.yaml	Live release-planner scenario moved/updated under the new root.
evals/evals/tools/prompt-to-tool-verify.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-typespec.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-releaseplan.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-pipeline.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-package.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-github.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-engsys.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-config.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/prompt-to-tool-apiview.eval.yaml	Tool-trigger eval spec moved/updated under the new root.
evals/evals/tools/add-arm-resource.eval.yaml	Scenario eval spec moved/updated under the new root.
evals/.vally.yaml	Vally configuration located under the renamed suite root.
evals/.gitignore	Ignores eval outputs under the renamed root.
eng/common/scripts/eval/test/init-eval-git-fixtures.test.ts	Updates invariant test discovery to use evals as the root.
eng/common/scripts/allow-relative-links.txt	Updates allowlist entry from azsdk-evals/** to evals/**.
eng/common/pipelines/workflow-eval.yml	Updates PR/trigger path filters and vallyRoot to evals.
eng/common/pipelines/live-eval.yml	Updates vallyRoot to evals for live eval execution.

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[azure-sdk-automation]

The following pipelines have been queued for testing:
java - template
java - template - tests
js - template
net - template
net - template - tests
python - template
python - template - tests
You can sign off on the approval gate to test the release stage of each pipeline.
See eng/common workflow