fix(AE-999): remove duplicate root span and change evaluation span_type to 'eval'

[AAgnihotry]

Summary

Fixes two issues reported in AE-999:

1. Removed duplicate root span: The extra root span with span_type="eval" wrapping agent execution has been removed
2. Changed span_type: The Evaluation span now uses span_type="eval" instead of "evaluation" for consistency

Changes Made

1. Removed Duplicate Root Span (Commit a7592a7)

• Removed the intermediate root span that was accidentally re-introduced
• Removed execution_id and span_attributes parameters from UiPathExecutionRuntime
• This span was previously removed in commit 27f913e but got re-added

File: src/uipath/_cli/_evals/_runtime.py:817-821, 838-839

2. Changed Evaluation Span Type (Commit dcb3fe1)

• Changed span_type from "evaluation" to "eval"
• Updated all Python tests to expect the new span type
• This maintains consistency with the temporal backend and avoids confusion with the removed root span

Files:

• src/uipath/_cli/_evals/_runtime.py:509
• tests/cli/eval/test_eval_runtime_spans.py
• tests/cli/eval/test_eval_tracing_integration.py
• testcases/eval-spans-testcase/src/assert.py

New Span Hierarchy

Evaluation Set Run (span_type="eval_set_run")
├── Evaluation (span_type="eval") ← Changed from "evaluation"
│   ├── Agent execution spans (no extra wrapping)
│   └── Evaluator (span_type="evaluator")
│       └── evalOutput (span_type="evalOutput")

Testing

• ✅ All 1919 tests pass
• ✅ Linting passed
• ✅ Formatting passed
• ✅ Type checking passed
• ✅ Build successful

Frontend Changes Required

⚠️ Note: The Agents repo (StudioWeb) frontend needs corresponding updates to filter by the new span type:

File: frontend-sw/src/components/coded-evaluator/EvalRunTraceDialog/EvalRunTraceDialog.tsx

• Line 138: Change span.SpanType === "evaluation" to span.SpanType === "eval"

File: frontend-sw/src/components/coded-evaluator/EvalRunTraceDialog/EvalRunTraceDialog.test.tsx

• Line 65: Change filter condition
• Lines 148+: Update all test mocks from "evaluation" to "eval"

Related Issues

Fixes: https://uipath.atlassian.net/browse/AE-999

🤖 Generated with Claude Code

Development Package

• Use uipath pack --nolock to get the latest dev build from this PR (requires version range).
• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath==2.8.7.dev1012894671",

  # Any version from PR
  "uipath>=2.8.7.dev1012890000,<2.8.7.dev1012900000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath = { index = "testpypi" }

[tool.uv]
override-dependencies = [
    "uipath>=2.8.7.dev1012890000,<2.8.7.dev1012900000",
]