- Replace Google Fonts with system font stacks across all themes
- Add Referrer-Policy, X-Content-Type-Options, X-Frame-Options, CSP headers
- Add rel="noreferrer noopener" on all outbound links
- Add no-referrer and dns-prefetch-control meta tags to all themes
- Clean tracking params on outbound links from trusted/remote sources
- Remove Google domains from CSP whitelists
Save the custom kodama template to themes/kodama.html so it's
version-controlled as a file rather than only living in the database.
Stop tracking index.db since it's runtime data, not source code.