go get -u across the backend: goja 2026-07-01, golang.org/x/* latest,
brotli 1.2.2, klauspost/compress 1.19. Toolchain stays on go1.25.9;
CI and docs now pin 1.25.9 explicitly.
The repo has no `dev` branch (only `main` and l10n-related branches),
and recent history shows PRs merge straight into `main` — update the
fork/PR instructions to match. Also swap the Riverpod example for the
hand-written `Notifier` pattern actually used across lib/providers/,
since the codebase doesn't use riverpod_annotation code generation.
zarzet