rename packages, refactor out tailwind compiler,

go/cmd/examples/go-wasm-web/server/main.go

@@ -13,15 +13,13 @@ import (
 	"flag"
 	"log"
 	"net/http"
-	"os"
-	"os/exec"
-	"path/filepath"
 
 	"kjol/httputil"
 	"kjol/vdom"
 	"kjol/wasmdevserver"
 
 	"gowasmweb/app"
+	"gowasmweb/buildsteps"
 )
 
 func main() {
@@ -34,7 +32,8 @@ func main() {
 		Dir:       "./wwwroot",
 		Watch:     *watch,
 		WatchDirs: []string{"app", "wasm", "css", "../../../webui", "../../../vdom", "../../../wasmruntime", "../../../rsc"}, // example + kjol engine + kit
-		Build:     buildWasm,
+		Build:     buildsteps.All,
+		BuildCSS:  buildsteps.Tailwind, // a .css save skips codegen+wasm and hot-swaps the stylesheet
 		Render:    render,
 		Document:  document,
 		Handle:    apiRoutes,
@@ -89,29 +88,3 @@ func document(inner string) string {
 </body>
 </html>`
 }
-
-// buildWasm runs the directive codegen (kjol/cmd/wasmgen), compiles the Tailwind
-// CSS (kjol/cmd/twcss, scanning the Go markup + webui kit), then compiles ./wasm
-// to wwwroot/app.wasm. Returned combined output is shown in the browser overlay
-// on failure.
-func buildWasm() ([]byte, error) {
-	if out, err := exec.Command("go", "run", "kjol/cmd/wasmgen", "./app").CombinedOutput(); err != nil {
-		return out, err
-	}
-	// Compile Tailwind from the kjol module root (so the engine's deps resolve),
-	// scanning the webui kit + this example's Go markup for utility candidates.
-	tw := exec.Command("go", "run", "./cmd/twcss",
-		"-entry", "cmd/examples/go-wasm-web/css/app.css",
-		"-out", "cmd/examples/go-wasm-web/wwwroot/app.css",
-		"-base", ".",
-		"webui/**/*.go",
-		"cmd/examples/go-wasm-web/app/**/*.go",
-		"cmd/examples/go-wasm-web/server/**/*.go")
-	tw.Dir = "../../.." // kjol/go
-	if out, err := tw.CombinedOutput(); err != nil {
-		return out, err
-	}
-	cmd := exec.Command("go", "build", "-o", filepath.Join("wwwroot", "app.wasm"), "./wasm")
-	cmd.Env = append(os.Environ(), "GOOS=js", "GOARCH=wasm")
-	return cmd.CombinedOutput()
-}