[TASK] Release 0.5.0

[benjaminkott]

Description

Bumps package.json and the lockfile to 0.5.0, so the tag v0.5.0 and the version agree and the release workflow publishes.

What the release carries, as npm run notes -- v0.5.0 says it:

• Check one site on its own when no side B is named — a config without compare.b is a smoke test: every page captured once and judged on its answer, exceptions and failed requests
• Show a smoke run in the report as one side
• Show the widest viewport first, however the config lists it
• Give the picture on a tile a four-by-three frame

Type of change

• Bugfix
• Task
• Feature
• Documentation

Related issues

How to validate

1. npm run notes -- v0.5.0 and read .out/notes.md
2. After the merge: git tag v0.5.0 && git push origin v0.5.0, then watch the release workflow

AI assistance

• Agent and version: Claude Code
• Model and effort/reasoning level: Claude Opus 5, default effort
• Share written by the agent: the bump command and this description; the four feature commits this releases were written by the agent as well, reviewed by the maintainer
• Reviewed and understood before pushing: yes

Checklist

• Targets main
• Commits are signed off (git commit -s) — appreciated, not
  required
• Commit subjects follow [BUGFIX|TASK|FEATURE] Subject
• npm run typecheck passes
• npm test passes
• A bugfix comes with a test that fails without it — appreciated,
  not required
• The JSON schema still matches the parser if the config format
  changed
• README updated if the change is user facing