The server's OnStart hook started the HTTP listener with
`go s.listenAndServe()`; the Go style guide asks for a function called
with `go` to be wrapped in an anonymous function, so it is now
`go func() { s.listenAndServe() }()`. No other go statement in the Go
code called a function directly. Nothing the server does changed.
Model: opus-5-5
The Go module moves from backend/ to the root (go.mod, go.sum,
.golangci.yml, cmd/, internal/), the page's source to web/, and nginx's
two files to configs/. backend/ is gone: its LICENSE and .dockerignore
are deleted, and its .gitignore entries, README and scripts are folded
into the root ones. script/build builds the server binary after the
frontend; script/run and script/clean move up from backend/script/;
make test, lint, fmt and fmt-check do what the backend's did. Vite's
root is web/ and it still builds into dist/. go.mod ignores
node_modules/, whose npm packages can ship .go files. script/bootstrap
no longer installs gcc, which only the host Go tests needed.
Model: opus-5-5