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Add tool elapsed timing, ✓/✗ result markers and polish TUI status/wel… #54

Job	Run time
Pyright	25s
Build wheel, install & CLI smoke test	20s
Tests (py3.11)	1m 9s
Tests (py3.12)	1m 12s
Ruff (lint + format)	18s
Tests (py3.13)	1m 18s
pip-audit (dependency CVEs)	19s
	5m 1s