v0.3.0-alpha.1

What's Changed

• Worker: honour or refuse shared-memory order; memory-map big TIFF inputs by @guijacquemet in #125
• Worker exit code 3 is called an import failure only when the worker said so on stderr by @guijacquemet in #124
• CI: smoke_migration accepts template 0.1.17 and can test a top-level Tools import by @guijacquemet in #126
• Release sandbox: a dispatch-only workflow that tests a released app on fresh Linux, macOS and Windows runners by @guijacquemet in #127
• Bump Tools to 0.3.0a1, add feature id shm_order_v1 (for pre-release v0.3.0-alpha.1) by @guijacquemet in #128
• Audit fixes before v0.3.0-alpha.1: told TIFF fallback, ledger, docs, test hygiene, CI hardening by @guijacquemet in #129
• Annotate every function in tests and scripts; mypy checks tests, scripts and fixtures; annotation check in lint by @guijacquemet in #130
• CI: smoke_migration accepts template 0.1.18 and an optional LC_TOOLS_SPEC input by @guijacquemet in #131
• Per-host discovery: an app's hosts: line is binding (app_hosts_v1) by @guijacquemet in #133
• Docs: human test protocol rewritten for the alpha test set, one install page (docs only) by @guijacquemet in #132
• Docs: make the host-PR sentences true now that all three hosts honour the rule (docs only) by @guijacquemet in #134
• Release sandbox: a CHECK that never printed is red; final verdict step with expected_fail by @guijacquemet in #135
• docs: decided release numbers, Napari flake status, host release note by @guijacquemet in #136

Full Changelog: v0.2.0-rc.2...v0.3.0-alpha.1