v0.0.21

## What's Changed
* fix(editor): apply classes to all selected elements by @MelmacAlpha in https://github.com/CoreBunch/Instatic/pull/511
* fix(settings): make the Esc keycap close the modal it advertises by @mostafasadeghidev in https://github.com/CoreBunch/Instatic/pull/499
* feat(plugins): @own-created contentAccess marker for plugin-created tables by @mostafasadeghidev in https://github.com/CoreBunch/Instatic/pull/335
* fix(site-import): resolve cache-busted asset URLs by @spcxai2025 in https://github.com/CoreBunch/Instatic/pull/539
* fix(dashboard): onboarding step 03 follows the Home page being published by @DavidBabinec in https://github.com/CoreBunch/Instatic/pull/624
* fix(data): author reassignment rides the row-access boundary by @DavidBabinec in https://github.com/CoreBunch/Instatic/pull/625
* fix(ai): read tools and the MCP relay decide row access with the HTTP rules by @DavidBabinec in https://github.com/CoreBunch/Instatic/pull/626
* fix(mcp): derive OAuth discovery from the configured public origin, never the Host header by @DavidBabinec in https://github.com/CoreBunch/Instatic/pull/627
* chore(release): prepare 0.0.21 by @DavidBabinec in https://github.com/CoreBunch/Instatic/pull/628

## New Contributors
* @MelmacAlpha made their first contribution in https://github.com/CoreBunch/Instatic/pull/511
* @spcxai2025 made their first contribution in https://github.com/CoreBunch/Instatic/pull/539

**Full Changelog**: https://github.com/CoreBunch/Instatic/compare/v0.0.20...v0.0.21