docs(openapi): clarify internal files response items

[luyua9]

Summary

Update the OpenAPI schema for GET /internal/files/{directory_type} so each array item documents the suffix that the route already returns, for example example.png [output].

api_server/routes/internal/internal_routes.py formats every visible file as:

f"{entry.name} [{directory_type}]"

The previous schema only said array<string>, which made generated clients miss the directory-type suffix contract.

Validation

• python3 - <<'PY' ... yaml.safe_load(open('openapi.yaml')) ... PY
• git diff --check

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 6b61918 and 5d0fcd7.

📒 Files selected for processing (1)

• openapi.yaml

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📝 Walkthrough

Walkthrough

This PR updates the OpenAPI schema for the GET /internal/files/{directory_type} endpoint's 200 response. The returned filename strings are now constrained by a regex pattern requiring the format name [output|input|temp], enforcing that each filename is suffixed with a bracketed directory type. The schema description is also updated to document this suffix requirement.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: clarifying the OpenAPI schema for internal files response items with the directory-type suffix format.
Description check	✅ Passed	The description is directly related to the changeset, explaining why the schema update was necessary and providing validation steps taken.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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