2026.11.15.1: CI time cost — main's test build reused, the tests at profile ci, a long case divided while it pays (mtest 0.9.0), the matrix scan side by side; the built-in platform openkal-platform 0.28.0

2026.11.15.1: CI time cost — main's test build reused, the tests at profile ci, a long case divided while it pays (mtest 0.9.0), the matrix scan side by side; the built-in platform openkal-platform 0.28.0 #44