Replace CSS background-image switching with direct navbar image source updates to avoid Safari and WebKit repaint failures.
Select the appropriate logo during initial DOM construction and update it when the system color scheme changes, Safari restores a cached page, or the document returns to the foreground. Preserve CSP compatibility and Gitea subpath support while retaining the existing logo dimensions.
Import upstream Gitea light and dark themes so new defaults and syntax styles remain compatible across upgrades. Replace the custom navbar template with CSS-based logo overrides and remove redundant Chroma and CodeMirror assets.
Add theme color-scheme metadata, correct relative asset paths, apply CSP nonces to analytics scripts, and document installation, compatibility, upgrade, and licensing requirements.
cole-maxwell1