Bump vws-python-mock to 2026.2.21

[adamtheturtle]

Summary

• Bumps vws-python-mock from 2026.2.18.2 to 2026.2.21
• Updates VuforiaDatabase → CloudDatabase throughout tests and docs
• Updates add_database(database=...) → add_cloud_database(cloud_database=...) throughout tests and docs

Test plan

• uv run --all-extras pytest — 178 passed
• All pre-commit hooks passed (mypy, pyright, ruff, etc.)

🤖 Generated with Claude Code

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Note

Low Risk
Primarily dependency bump and mechanical test/docs refactor; main risk is CI breakage if the new mock API behaves differently, but production code paths are untouched.

Overview
Bumps vws-python-mock from 2026.2.18.2 to 2026.2.21.

Updates documentation and the full test suite to use CloudDatabase instead of VuforiaDatabase, and switches mock setup calls from add_database(database=...) to add_cloud_database(cloud_database=...) (including fixture type hints and docstrings) to match the new mock API.

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