Record the clean-install time baseline before the dependency changes #236

Problem

The target is faster installs too. The "before" number exists only on today's main: once #233 (no more HTA git clone), #195 and the gRPC removal merge, it can't be measured again.

Task

Before #233 merges, time a clean install of today's main: Python 3.10(?or whatever minimum agreed?) and 3.13, three runs each, python -m venv then pip install . without a pip cache. Record wall time, the number of packages downloaded, and any failures. Use the environment the #227 job will use, and write down the exact commands so experiment can be repeated in the futuree.

Acceptance criteria

• The baseline numbers and the exact method are posted on the Goal 1 parent before Update HTA dependency to the traceinsight package #233 merges. Evidence: CI run link and a comment.