feat(theme): add evergarden (@koibtw)

[koibtw]

Description

adds the evergarden theme
https://evergarden.moe
https://github.com/everviolet/nvim

standard	colorful	flipped

Checks

• Adding quotes?
  • Make sure to include translations for the quotes in the description (or another comment) so we can verify their content.
• Adding a language?
  • Make sure to follow the languages documentation
  • Add language to packages/schemas/src/languages.ts
  • Add language to exactly one group in frontend/src/ts/constants/languages.ts
  • Add language json file to frontend/static/languages
• Adding a theme?
  • Make sure to follow the themes documentation
  • Add theme to packages/schemas/src/themes.ts
  • Add theme to frontend/src/ts/constants/themes.ts
  • (optional) Add theme css file to frontend/static/themes
  • Add some screenshots of the theme, especially with different test settings (colorful, flip colors) to your pull request
• Adding a layout?
  • Make sure to follow the layouts documentation
  • Add layout to packages/schemas/src/layouts.ts
  • Add layout json file to frontend/static/layouts
• Adding a font?
  • Make sure to follow the fonts documentation
  • Add font file to frontend/static/webfonts
  • Add font to packages/schemas/src/fonts.ts
  • Add font to frontend/src/ts/constants/fonts.ts
• Check if any open issues are related to this PR; if so, be sure to tag them below.
• Make sure the PR title follows the Conventional Commits standard. (https://www.conventionalcommits.org for more info)
• Make sure to include your GitHub username prefixed with @ inside parentheses at the end of the PR title.

[Copilot]

Pull request overview

Adds the new evergarden theme to the shared theme-name schema and the frontend theme palette registry.

Changes:

• Register evergarden in ThemeNameSchema (schemas package).
• Add evergarden color definitions to the frontend themes map.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/schemas/src/themes.ts	Adds evergarden to the allowed theme-name enum.
frontend/src/ts/constants/themes.ts	Adds the evergarden theme color palette entry.

[github-actions]

Continuous integration check(s) failed. Please review the failing check's logs and make the necessary changes.

[Leonabcd123]

Looks very similar to everblush and peach blossom.

[koibtw]

well, they're all green but they're very different shades and contrasts. that's like calling catppuccin and dracula similar.