Feature/add year view

[chanoktrue]

Before you submit

This plugin is maintained by one person in their spare time with a specific design vision and strict code standards. Please read this before opening a PR.

PRs without a linked issue are closed without review. New features and non-trivial changes must be discussed in an issue first — no exceptions.

AI-generated bulk PRs are closed immediately. If your PR rewrites large chunks of existing code, adds generic boilerplate, or ignores the project style, it will be closed with no further explanation.

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What this PR does

Linked issue

Fixes #

Checklist

• I discussed this change in an issue and got a thumbs-up before writing code.
• npm run build passes with zero errors.
• npx eslint src/ passes with zero warnings — includes no inline styles, sentence-case UI text, no unnecessary non-null assertions.
• New UI follows the Quiet Architect design system (no emojis, no hard corners, no 1px dividers, no pure black text, depth via tonal stacking).
• New modals are created through ModalFactory, never instantiated directly.
• No element.style.* assignments — CSS classes only.
• No dynamic await import() — static imports only.
• Dates use YYYY-MM-DD format; UTC operations only (T00:00:00Z, setUTCDate()).
• This PR is focused on one logical change. Unrelated cleanup is in a separate PR.

[mrhyde]

@chanoktrue Thanks for the PR! We're on vacation until July 27, so review will be delayed a bit - we'll take a proper look as soon as we're back. Appreciate your patience 🙏