Renames workflow name from "Test" → "CI" and adds an all-required
sentinel job that aggregates the 3.11/3.12/3.13 matrix results into
a single CI / all-required (pull_request) context.
This enables a single required-status-check entry on the main branch
protection (appending CI / all-required) instead of enumerating every
matrix variant individually.
Implements: molecule-ai/molecule-sdk-python#11
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>