07701a901d
Add comprehensive test suite (270+ tests across 14 files) - Bayesian network primitives (25 tests) - fingerprint sampler (55 tests) - Profile dataclass + pin system (43 tests) - configure_proxy decision table (24 tests) - Windows + platform-agnostic prefs (27 tests) - CLI / download gap coverage (17 tests) - Multi-module integration (12 tests) - E2e launcher lifecycle (9 tests) - launcher / headless / async_api (32 tests) - Linux-specific prefs / headless (16 tests) - Linux tar.gz download (4 tests) - Linux integration pipeline (3 tests) - Linux launcher e2e (4 tests) - pytest markers + shared conftest Resolves conflicts in pyproject.toml, test_prefs.py, test_proxy.py by keeping the upstream additions and merging with the previous wheel-build fix. 323 tests pass on Windows; 14 e2e tests deselected by default (require patched Firefox binary).