[ENHANCEMENT] RAG experiment legends in Trackio show redundant naming (Pipeline 1_1 instead of 1)

[kamran-rapidfireAI]

Description

When running RAG experiments with Trackio tracking enabled, the experiment legends in the Trackio dashboard display confusing/redundant names like Pipeline 1_1, Pipeline 2_2, Pipeline 3_3, Pipeline 4_4 instead of simple identifiers like 1, 2, 3, 4.

Current Behavior

Legends display as:

• Pipeline 1_1
• Pipeline 2_2
• Pipeline 3_3
• Pipeline 4_4

Expected Behavior

Legends should display as:

• 1
• 2
• 3
• 4

Steps to Reproduce

1. Run the RAG FiQA tutorial notebook with Trackio enabled: rf-colab-tutorial-rag-fiqa-trackio.ipynb
2. Run the experiment.
3. View the Trackio dashboard.
4. Observe the legend labels in the metric charts.

Environment

• Commit: 3ff8daf9744cec55fc67318ba83f97b03ec67222 on main
• Reproducibility: Affects all RAG experiments tracked with Trackio

Additional Context

This is a UX improvement to make the dashboard legends cleaner and easier to read when comparing multiple pipeline configurations.

Screenshot