Tests

Tighten Bubble boundary with typed accessors #290

Job	Run time
Secret scan (gitleaks)	6s
Typecheck (mypy)	18s
Lock file freshness	11s
Unit tests (windows-latest / Python 3.12)	1m 47s
Unit tests (ubuntu-latest / Python 3.12)	26s
Unit tests (ubuntu-latest / Python 3.11)	21s
Unit tests (windows-latest / Python 3.11)	2m 31s
Unit tests (macos-latest / Python 3.10)	45s
Unit tests (windows-latest / Python 3.13)	1m 11s
Unit tests (windows-latest / Python 3.10)	1m 20s
Unit tests (macos-latest / Python 3.11)	26s
Unit tests (macos-latest / Python 3.13)	15s
Unit tests (ubuntu-latest / Python 3.10)	21s
Unit tests (ubuntu-latest / Python 3.13)	27s
Unit tests (macos-latest / Python 3.12)	31s
Performance benchmarks (gated)	31s
	11m 27s

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