Part of #430.

Development happens on main. A release/v1 branch is only created on demand if a v1 patch needs to be shipped from the pre-pivot code.

Tasks

• Tag the last working web-app commit on main (e.g. v-last-webapp) before any destructive changes so a release/v1 branch can be cut from it later if needed
• Publish @scope42/data v2.0.0 and @scope42/lint v1.0.0 from main
• Publish Obsidian plugin (BRAT first, community registry as follow-up)
• Announcement + README badges
• (On demand only) Cut release/v1 from the v-last-webapp tag if a v1 patch needs to ship