[tasodoufu]

Problem

New users may clone the template repository itself and miss the required placeholder updates before their first publish.

Change

Adds a short README “First evening” section covering:

• using Use this template or a fork to create a package repository;
• the requested npm ci && npm test && npm run build verification;
• the package/repository placeholders, Changesets config, and LICENSE attribution to update.

User impact

Template users get a concise first-use checklist without changing runtime behavior.

Verification

• npm run lint
• npm run typecheck
• npm run test:ci
• npm run build
• git diff --check

The issue was rechecked immediately before push: it is OPEN, unassigned, has no comments indicating active work, and no open PR overlaps README.md.

Closes #17

[fabianzimber]

@tasodoufu Thank you alot for the contribution. Looks good and clean 👍