Display tags in test run execution view and exports

[Copilot]

Tags assigned to test cases were not visible when executing test runs, despite being stored correctly in the database.

Changes

Frontend

• Added Tags column to test case selector table, displaying tags as chips
• Added tags section to test case detail modal
• Added tags translation key to all language files (en, ja, pt-BR)

Backend

• Modified /runs/download/:runId to include Tags association when fetching run cases
• Added tags to CSV export as comma-separated values
• JSON export automatically includes tags via nested model structure

Tests

• Updated download route tests to mock Tags model and verify tag inclusion in CSV exports

Example

Test cases with tags now display in the run execution view:

case 'tags':
  return (
    <div className={`flex gap-1 flex-wrap ${isIncluded ? '' : notIncludedCaseClass}`}>
      {testCase.Tags && testCase.Tags.length > 0 ? (
        testCase.Tags.map((tag) => (
          <Chip key={tag.id} size="sm" variant="flat">
            {tag.name}
          </Chip>
        ))
      ) : (
        <span>-</span>
      )}
    </div>
  );

CSV exports now include a tags column with comma-separated tag names.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Added tags cannot be seem in test run</issue_title>
<issue_description>Add labels to the test cases, and then add these test cases to the test run.
However, when executing the test run, we were unable to find these added labels.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Added tags cannot be seem in test run #351

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