Bookmarks⁽⁵⁾

Reference

Astro Docs
docs.astro.build
Unusually good framework documentation — the upgrade guides in particular are honest about what breaks.
Svelte 5 Runes
svelte.dev/docs/svelte/what-are-runes
The clearest explanation of why signals beat dependency arrays.
Can I Use
caniuse.com
The difference between "this shipped" and "this shipped everywhere".

Performance

Web.dev — Core Web Vitals
web.dev/vitals
The numbers worth optimising for, and the ones that are mostly noise.

Tools

Drizzle ORM
orm.drizzle.team
SQL you can read, with types that follow the schema.