Add evaluation analysis scripts

[djukicmilica]

New script: Get-WorkflowSummary.ps1

New script: Get-WorkflowSummary.ps1
(vscode-file://vscode-app/c:/Users/milicadjukic/AppData/Local/Programs/Microsoft%20VS%20Code/e7fb5e96c0/resources/app/out/vs/code/electron-browser/workbench/workbench.html)
PowerShell script that fetches evaluation workflow run summaries from GitHub Actions, downloads JSONL artifacts (including from nested zips), and optionally copies them into a stable output folder for analysis.

New script: bcbench_analyze_artifacts.py

New script: bcbench_analyze_artifacts.py
(vscode-file://vscode-app/c:/Users/milicadjukic/AppData/Local/Programs/Microsoft%20VS%20Code/e7fb5e96c0/resources/app/out/vs/code/electron-browser/workbench/workbench.html)
Python script for offline analysis of downloaded BC-Bench artifacts. Supports ZIP and pre-extracted input modes. Produces summary CSVs, top failures, grouped errors, and extracts generated test code/patches per test ID.

New script: group_errors_from_summary.py

New script: group_errors_from_summary.py
(vscode-file://vscode-app/c:/Users/milicadjukic/AppData/Local/Programs/Microsoft%20VS%20Code/e7fb5e96c0/resources/app/out/vs/code/electron-browser/workbench/workbench.html)
Python script that groups errors from a summary CSV into high-level categories (tests passed pre-patch, failed post-patch, build failures, etc.).

[ventselartur]

You cannot check the change to config.yaml file in. I would suggest to separate changes to the scripts from AlTest.agent.md. The latter should be run at least 5 times to see our score on BC Bench. It should be more than the existing version of AL test agent

[haoranpb]

config.yaml change is ok for now, you'll need it to run things.

But do separate the changes for the scripts

[ventselartur]

We need to run this at least 5 times to see if this is going to perform better than the existing AL test agent. Let's not push that change to master yet.

[haoranpb]

Run 1 completed: https://github.com/microsoft/BC-Bench/actions/runs/24083046010

Run 2 in progress: https://github.com/microsoft/BC-Bench/actions/runs/24148965983

[haoranpb]

Can you please move those scripts into tools/altest folder (you will have to create those folders) instead? And leave a README under tools folder saying those scripts are designed for downloading and analyzing GitHub Action artifacts

the scripts folder is designed for powershell scripts used in environment setup, etc.

And also mention it in

BC-Bench/.github/copilot-instructions.md

Lines 5 to 10 in 143a74e

	- **Dataset**: Benchmark entries following SWE-Bench schema with BC-specific adjustments
	- **Python Package** (`src/bcbench/`): CLI tools, agent implementations, and validation utilities
	- **PowerShell Scripts** (`scripts/`): Environment setup and dataset verification using AL-GO/BCContainerHelper
	- **Agent Evaluations**: Focuses on GitHub Copilot CLI and Claude Code
	- **Experiments**: MCP Servers, custom instructions, custom agents, skills, etc. and their performance on the benchmark
	- **Notebooks** (`notebooks/`): Analysis and visualization of benchmark results