E0155: Tracked state used in a .go file

A .vuka.html struct's unexported fields that aren't a ui.State or a dependency are tracked server state. The compiler lowers what reads and writes them — p.rows = v, len(p.rows), p.n++, a composite literal setting one, &Rows{rows: all} — wherever it compiles the code: in the shape's header and in every .vuka file of the package. A .go file is plain Go, compiled as written, so there the field is not its declared type and the code reading or writing it would not compile. The error names the field, the shape file declaring it and the function using it.

Keep the method with the shape: in a .vuka file beside it (the compiler lowers it there exactly as in the header), or in the header itself. A .go file can still hold everything else — services, models, helpers the methods call with plain values.

Wrong

// rows.go
package app

func (r *Rows) load(all []string) {
	r.rows = all
}

Right

// rows.vuka
package app

func (r *Rows) load(all []string) {
	r.rows = all
}